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.workbuddy/memory/2026-08-14.md

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+# 2026-08-14
+
+## 独立 Bug 修复：`OtherUtil.jsonParseList` 泛型擦除导致 ClassCastException
+
+### 现象
+- `POST /oapi/user/AddUser`（同步用户接口，非 `api/` 包，未被 UserContext 重构涉及）返回 `code:6 / 内部服务错误`。
+- 服务器真实异常：`java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to com.yunhai.platform.utils.model.BoaUser`
+  位置 `SyncUserService.syncAddOrUpdate(SyncUserService.java:54)`（增强 for 循环 `for (BoaUser user : userList)`）。
+- 连带次级错误（非致命、异步）：审计日志 `sys_operation_log.request_params` 列存中文报 `Incorrect string value`（列字符集疑似 latin1/非 utf8mb4），被 `SysOperationLogServiceImpl` 捕获打印「异步落库失败」。
+
+### 根因
+- `SyncUserController.AddUser` 用 `OtherUtil.jsonParseList(jsonString, BoaUser.class)` 解析成 `List<BoaUser>`。
+- 原 `jsonParseList` 实现：`objectMapper.readValue(json, new TypeReference<List<T>>() {})`。**Java 泛型擦除**使运行时 `List<T>` 退化为原始 `List`，Jackson 把元素反序列化为 `LinkedHashMap`；遍历时强转 `BoaUser` 即 `ClassCastException`。
+- 同文件 `jsonParseArrayTree` 用 `objectMapper.getTypeFactory().constructCollectionType(List.class, elementClass)` 才正确——原 `jsonParseList` 注释写「TypeReference 保留泛型信息」是错的。
+
+### 修复
+- `utils/OtherUtil.java` 的 `jsonParseList`：改用 `constructCollectionType(List.class, targetClass)` 构建 `JavaType` 再 `readValue`。
+- 影响面：顺带修好 `UpdateUser`、`DeleteUser`（同用 `jsonParseList`，之前同样会 ClassCast）。
+
+### 待跟进（非本次阻塞）
+- 审计日志表 `sys_operation_log.request_params` 列字符集问题：存中文报 `Incorrect string value`。需改 DDL 为 `utf8mb4`（或确认连接字符集）。属 DB schema，不影响主业务返回，已口头提示用户。
+
+### 环境注意（延续）
+- 本机 `mvn compile` 仍受 Lombok 命令行限制；改动在 IDE 验证。
+
+## 深层根因 & 二次修复：`AddUser` 反序列化失败（JSON 与框架 BoaUser 结构不匹配）
+
+### 现象（修复 ClassCast 后仍未解决）
+- `jsonParseList` 改 `constructCollectionType` 后，`AddUser` 仍 "反序列化失败"（500）。
+- 原因浮出：调用方下发的 JSON 是**自定义格式**，并非 yunhai 框架 `BoaUser`：
+  - `groups:[{"groupId":12,"no":null,"schoolId":3}]`、`roleList:[{"roleId":5,"schId":3}]`
+  - 原服务却按 `BoaUser` 调 `user.getSchool().getId()`、`group.getId()`、`group.getSort()`、`user.getRoleIds()`
+- 用 `BoaUser.class` 反序列化时，Jackson（默认 `FAIL_ON_UNKNOWN_PROPERTIES=true`）对未知字段 `groups`/`roleList` 抛 `UnrecognizedPropertyException` → 仍 500。
+
+### 修复（按用户指示：加 DTO 补字段）
+- 新增 3 个 DTO（`model/tool` 包，与 `DeleteUser` 同风格、`@Data` + `@JsonIgnoreProperties(ignoreUnknown=true)`）：
+  - `SyncUserDTO`：id, account, name, idcard, phone, email, gender(Integer), birthday, status(Integer), profilePicture, `List<SyncGroupDTO> groups`, `List<SyncRoleDTO> roleList`
+  - `SyncGroupDTO`：groupId, no(Integer), schoolId
+  - `SyncRoleDTO`：roleId, schId
+- `SyncUserController`：`jsonParseList(jsonString, SyncUserDTO.class)`；`ISyncUserService.syncAddOrUpdate(List<SyncUserDTO>)`。
+- 重写 `SyncUserService`：去掉 `BoaUser`/`BoaGroup` 依赖，按真实字段映射：
+  - 角色判定改用 `user.getRoleList().stream().map(SyncRoleDTO::getRoleId)` 比 `UserRole` 值；
+  - `group.getId()`→`group.getGroupId()`；`user.getSchool().getId()`→`group.getSchoolId()`；`group.getSort()`→`group.getNo()`；`stuClassNo` = `String.valueOf(group.getNo())`。
+- `SchStudent.schId` 继承自 `BaseEntity`（存在）；实体字段类型与 DTO 对齐（gender/status 为 Integer，idcard/account/name/phone 为 String）。
+
+### 结论
+- 该接口此前（含重构前）从未真正可用：先因 `LinkedHashMap` 强转炸，后为 `BoaUser` 字段不匹配炸。现在用匹配 JSON 的 DTO 彻底解耦。
+- 注意 JSON 中 `roleId=5`（BUREAU_LEADER_USER），在当前样本数据下既不命中 isStudent 也不命中 isTeacher，故不会落库；这是调用方业务数据问题，非代码缺陷。
+
+## 优化 `SyncUserService`
+- 重写 `service/impl/sync/SyncUserService.java`，优化点：
+  1. 角色判定改为每个用户只遍历一次 `roleList`（`collectRoleIds` 提取去重 Set），`isStudent`/`isTeacher` 改判集合包含，去除重复流式遍历。
+  2. `deleteUser` 中 `studentDeletes`/`teacherDeletes` 同一过滤条件算了两次 → 合并为单次 `validDeletes`；删除死代码 `groupsBySchool`。
+  3. 修复教师分组删除 `toMap` 2 段键在「同教师同 groupId 跨多学校」时被静默丢键的 bug → 改用 `Collectors.groupingBy` 收集 `List<SchTeacherGroup>`，删除全部匹配分组。
+  4. 缓存清除去重：delete 时按 (schId,classId)/(schId) 去重后调用 `clearClassStudentCaches`/`clearTeacherCaches`（新增的批量方法）。
+  5. 补齐 add/update 后的缓存失效：此前只在 delete 清缓存，add/update 后班级学生缓存/学校教师缓存会陈旧 → 现同步保存后收集受影响键并 `clearClassStudentCaches`/`clearTeacherCaches`。
+- 行为保持：事务注解、角色归类（学生优先于教师）、字段映射不变。
+
+## 优化 `SchClassUpgradeService`（学年升级）
+- `upgradeSingleSystem` 原本每个年级各调一次 `queryService.getSchClassCacheFilter` 反序列化全校班级列表、再逐年级 `saveAll`；改为**基于 SET 的批量 `@Modifying` 更新**：
+  - 新增 `SchClassRepository.batchUpgradeGrade(schId, 非最高年级列表, now)`：`grade_id = grade_id + 1` 单语句原子完成（仅基础教育）。
+  - 新增 `SchClassRepository.batchGraduate(schId, maxGrade, now)`：最高年级 `graduate = true`。
+  - 用 `?1 ?2 ?3` 位置参数避免受现有 lettuce `@Param` 误用影响；`clearAutomatically = true` 与 `SchStudentRepository` 风格一致。
+- `upgradeAllClasses` 优化/修复：
+  - `schType` 提升到学制循环外只查一次（原在学制内重复查）。
+  - `getCurrentYearTerm()` 加 null 守卫，避免 NPE。
+  - 原 `schType.equals(...)` 在 `getSchType` 返回 null 时 NPE → 改为常量 `.equals(schType)` 判等，null 安全。
+  - 升级日志保存包 try/catch，避免日志写入失败掩盖升级结果。
+  - 升级后除 `clearClassCache` 外补 `clearGradeateClassCache`，消除毕业后毕业缓存脏数据（原漏清）。
+- 行为保持：仅基础教育非最高年级升级、最高年级毕业；失败不阻断其他学制；失败记录可重试（existsBy...Status=true 不命中）。
+
+## 全局修正 Repository 的 `@Param` 错误注解
+- 发现 7 个 Repository 的 `@Query` 命名参数绑定误用了 `io.lettuce.core.dynamic.annotation.Param`（Lettuce Redis 注解），而非 Spring Data 的 `org.springframework.data.repository.query.Param`；后者不被 Spring Data 识别，运行时触发「Parameter binding not found」，属潜在崩溃隐患。
+- 统一替换为 `org.springframework.data.repository.query.Param`：SchClassRepository、SchClassHistoryRepository、SchDicCourseRepository、SchTeacherRepository、SchDicMajorsRepository、SchStudentRepository、SchTeacherGroupRepository。
+- 顺带在 SchClassRepository 补 `import java.util.Date;`（批量升级方法用到）并恢复 `Page`/`Pageable` 导入。
+- 现状：本沙箱无 Maven 无法编译验证，需本机 `mvn compile` 确认。
+
+## 修复 `SchClassUpgradeService` 中 `JdbcTemplate` 报红
+- 现象：IDE 中标红 `private JdbcTemplate jdbcTemplate;`。
+- 根因：`pom.xml` 仅引入 `spring-boot-starter-data-jpa`（其传递依赖 `spring-boot-starter-jdbc`/`spring-jdbc` 含 `JdbcTemplate`），但 IDE 未正确解析传递依赖时 `JdbcTemplate` 类找不到 → 报红。
+- 修复：
+  1. 在 `pom.xml` 显式新增 `spring-boot-starter-jdbc` 依赖（置于 data-jpa 之后），保证 `JdbcTemplate` 类与自动配置 Bean 稳定可用。
+  2. `SchClassUpgradeService` 由字段注入改为 Lombok `@RequiredArgsConstructor` 构造器注入，消除 IDEA 「Could not autowire. No beans of 'JdbcTemplate' type found」的自动注入识别告警，同时符合 Spring 推荐写法。`backupAllSnapshot` 的批量 INSERT...SELECT 快照用法保留。

sqlscript/sys_operation_log.sql

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+-- 系统审计日志表（双轨之审计轨，与业务日志表 operation_log 物理隔离）
+CREATE TABLE `sys_operation_log` (
+  `id` BIGINT NOT NULL AUTO_INCREMENT,
+  `log_level` TINYINT NOT NULL COMMENT '1-重要(删除) 2-次要(新增/编辑) 3-一般(查询)',
+  `operation_type` VARCHAR(16) NOT NULL COMMENT 'DELETE/CREATE/UPDATE/QUERY',
+  `user_id` INT DEFAULT NULL COMMENT '操作人ID（来自UserContext）',
+  `user_name` VARCHAR(64) DEFAULT NULL COMMENT '操作人姓名（来自UserContext）',
+  `sch_id` INT DEFAULT NULL COMMENT '学校ID（多校隔离）',
+  `request_ip` VARCHAR(64) NOT NULL COMMENT '客户端IP',
+  `request_uri` VARCHAR(512) NOT NULL COMMENT '请求URI',
+  `request_method` VARCHAR(16) NOT NULL COMMENT 'HTTP方法',
+  `class_method` VARCHAR(512) NOT NULL COMMENT '类名.方法名',
+  `request_params` TEXT COMMENT '请求参数（脱敏后）',
+  `response_data` MEDIUMBLOB COMMENT 'GZIP压缩后的响应JSON',
+  `status_code` INT NOT NULL COMMENT '200成功 500异常',
+  `cost_time` BIGINT NOT NULL COMMENT '耗时ms',
+  `user_agent` VARCHAR(512) DEFAULT NULL,
+  `error_msg` TEXT COMMENT '异常信息（截断2000）',
+  `create_time` DATETIME(3) NOT NULL COMMENT '记录时间',
+  PRIMARY KEY (`id`),
+  KEY `idx_sol_create_time` (`create_time`),
+  KEY `idx_sol_user_time` (`user_id`, `create_time`),
+  KEY `idx_sol_sch_time` (`sch_id`, `create_time`),
+  KEY `idx_sol_uri_time` (`request_uri`, `create_time`),
+  KEY `idx_sol_level_time` (`log_level`, `create_time`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='系统审计日志（HTTP接口级，全量记录）';

src/main/java/com/yunhai/bschclassmanage/Repository/SysOperationLogRepository.java

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+package com.yunhai.bschclassmanage.Repository;
+
+import com.yunhai.bschclassmanage.entity.SysOperationLog;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+import org.springframework.stereotype.Repository;
+
+import java.time.LocalDateTime;
+
+@Repository
+public interface SysOperationLogRepository
+        extends JpaRepository<SysOperationLog, Long>, JpaSpecificationExecutor<SysOperationLog> {
+
+    /** 按级别 + 截止时间批量删除（单条 DELETE，定时清理用） */
+    long deleteByLogLevelAndCreateTimeBefore(Integer logLevel, LocalDateTime time);
+}

src/main/java/com/yunhai/bschclassmanage/aspect/SysOperationLogAspect.java

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+package com.yunhai.bschclassmanage.aspect;
+
+import com.alibaba.fastjson.JSON;
+import com.yunhai.bschclassmanage.entity.SysOperationLog;
+import com.yunhai.bschclassmanage.service.ISysOperationLogService;
+import com.yunhai.bschclassmanage.utils.GzipUtil;
+import com.yunhai.bschclassmanage.utils.OperationLogResolver;
+import com.yunhai.bschclassmanage.utils.OtherUtil;
+import com.yunhai.bschclassmanage.utils.SensitiveDataUtil;
+import com.yunhai.bschclassmanage.utils.UserContext;
+import lombok.extern.slf4j.Slf4j;
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * 系统审计日志切面（双轨之审计轨）
+ * - 全量拦截 controller 包所有方法，不依赖注解
+ * - 排除日志查询控制器自身（防递归）
+ * - 与业务日志切面 OperationLogAspect(Order 2) 物理隔离，互不影响
+ */
+@Slf4j
+@Aspect
+@Component
+@Order(3)
+public class SysOperationLogAspect {
+
+    /** 排除的控制器（日志查询自身，防递归刷屏） */
+    private static final List<String> EXCLUDE_CONTROLLERS = Arrays.asList(
+            "com.yunhai.bschclassmanage.controller.api.LogController",            // 业务日志查询
+            "com.yunhai.bschclassmanage.controller.api.SysOperationLogController" // 审计日志查询
+    );
+    private static final int DEFAULT_MAX_RESPONSE_SIZE = 10240;
+
+    @Autowired
+    private ISysOperationLogService sysOperationLogService;
+
+    @Around("execution(* com.yunhai.bschclassmanage.controller..*.*(..))")
+    public Object around(ProceedingJoinPoint point) throws Throwable {
+        // 1. 排除日志控制器
+        String declType = point.getSignature().getDeclaringTypeName();
+        if (EXCLUDE_CONTROLLERS.contains(declType)) {
+            return point.proceed();
+        }
+
+        HttpServletRequest request = getRequest();
+        String httpMethod = request != null ? request.getMethod() : "";
+
+        long start = System.currentTimeMillis();
+        SysOperationLog entity = buildEntity(point, request, httpMethod);
+
+        Object result = null;
+        try {
+            result = point.proceed();
+            entity.setStatusCode(200);
+            fillResponse(entity, result, DEFAULT_MAX_RESPONSE_SIZE);
+            return result;
+        } catch (Throwable e) {
+            entity.setStatusCode(500);
+            entity.setErrorMsg(truncate(e.getMessage(), 2000));
+            throw e;
+        } finally {
+            entity.setCostTime(System.currentTimeMillis() - start);
+            sysOperationLogService.saveAsync(entity);
+        }
+    }
+
+    private SysOperationLog buildEntity(ProceedingJoinPoint point, HttpServletRequest request, String httpMethod) {
+        SysOperationLog e = new SysOperationLog();
+        e.setCreateTime(LocalDateTime.now());
+
+        // 用户信息（来自 UserContext，由 ControllerUserContextAspect Order1 已填充）
+        e.setUserId(UserContext.getUserId());
+        e.setUserName(StringUtils.hasText(UserContext.getUserName()) ? UserContext.getUserName() : "anonymous");
+        e.setSchId(UserContext.getSchId());
+        e.setRequestIp(StringUtils.hasText(UserContext.getIp()) ? UserContext.getIp() : OtherUtil.getClientIp());
+
+        String uri = request != null ? request.getRequestURI() : "";
+        String methodName = point.getSignature().getName();
+        e.setRequestUri(uri);
+        e.setRequestMethod(httpMethod);
+        e.setClassMethod(point.getTarget().getClass().getName() + "." + methodName);
+        e.setLogLevel(OperationLogResolver.resolveLevel(httpMethod, uri, methodName).getCode());
+        e.setOperationType(OperationLogResolver.resolveOperationType(httpMethod, uri, methodName));
+        if (request != null) {
+            e.setUserAgent(request.getHeader("User-Agent"));
+            e.setRequestParams(SensitiveDataUtil.mask(buildRequestParams(point, request)));
+        }
+        return e;
+    }
+
+    private String buildRequestParams(ProceedingJoinPoint point, HttpServletRequest request) {
+        try {
+            if (request != null && "GET".equalsIgnoreCase(request.getMethod())) {
+                String qs = request.getQueryString();
+                if (StringUtils.hasText(qs)) return qs;
+            }
+            Object[] args = point.getArgs();
+            if (args == null || args.length == 0) return "";
+            List<Object> filtered = new ArrayList<>();
+            for (Object arg : args) {
+                if (arg == null) continue;
+                if (arg instanceof HttpServletRequest || arg instanceof HttpServletResponse
+                        || arg instanceof HttpSession) continue;
+                filtered.add(arg);
+            }
+            return filtered.isEmpty() ? "" : JSON.toJSONString(filtered);
+        } catch (Exception ex) {
+            return "";
+        }
+    }
+
+    private void fillResponse(SysOperationLog e, Object result, int max) {
+        if (result == null) return;
+        try {
+            String resp = SensitiveDataUtil.mask(JSON.toJSONString(result));
+            if (resp.length() > max) resp = resp.substring(0, max) + "...[截断]";
+            e.setResponseData(GzipUtil.compress(resp));
+        } catch (Exception ex) {
+            log.warn("审计日志响应序列化失败, uri={}", e.getRequestUri(), ex);
+        }
+    }
+
+    private HttpServletRequest getRequest() {
+        ServletRequestAttributes a = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
+        return a != null ? a.getRequest() : null;
+    }
+
+    private String truncate(String s, int max) {
+        return s != null && s.length() > max ? s.substring(0, max) : s;
+    }
+}

src/main/java/com/yunhai/bschclassmanage/controller/api/SysOperationLogController.java

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+package com.yunhai.bschclassmanage.controller.api;
+
+import com.yunhai.bschclassmanage.config.Config;
+import com.yunhai.bschclassmanage.controller.BaseController;
+import com.yunhai.bschclassmanage.entity.SysOperationLog;
+import com.yunhai.bschclassmanage.model.vo.PageVO;
+import com.yunhai.bschclassmanage.service.ISysOperationLogService;
+import com.yunhai.bschclassmanage.utils.UserContext;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.InputStreamResource;
+import org.springframework.data.domain.Pageable;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.io.ByteArrayInputStream;
+import java.nio.charset.StandardCharsets;
+
+@RestController
+@RequestMapping(Config.API_PATH + "/syslog/")
+@CrossOrigin(originPatterns = {"*"}, allowCredentials = "true")
+public class SysOperationLogController extends BaseController {
+
+    @Autowired
+    private ISysOperationLogService sysOperationLogService;
+
+    /** 审计日志分页查询（默认按当前用户 schId 隔离） */
+    @GetMapping("list")
+    public PageVO<SysOperationLog> list(
+            @RequestParam(required = false) String uri,
+            @RequestParam(required = false) String method,
+            @RequestParam(required = false) Integer statusCode,
+            @RequestParam(required = false) Integer logLevel,
+            @RequestParam(required = false) Integer userId,
+            Pageable pageable) {
+        return sysOperationLogService.pageQuery(UserContext.getSchId(), uri, method,
+                statusCode, logLevel, userId, pageable);
+    }
+
+    /** 下载某条响应原文（GZIP 解压） */
+    @GetMapping("download/{id}")
+    public ResponseEntity<InputStreamResource> download(@PathVariable Long id) {
+        String data = sysOperationLogService.getResponseData(id);
+        if (data == null) data = "该条审计日志未记录响应数据";
+        ByteArrayInputStream bis = new ByteArrayInputStream(data.getBytes(StandardCharsets.UTF_8));
+        HttpHeaders headers = new HttpHeaders();
+        headers.add("Cache-Control", "no-cache, no-store, must-revalidate");
+        try {
+            headers.add(HttpHeaders.CONTENT_DISPOSITION,
+                    "attachment; filename=" + new String(("audit-" + id + ".txt").getBytes("gbk"), "iso8859-1"));
+        } catch (Exception ignore) {
+        }
+        return ResponseEntity.ok().headers(headers)
+                .contentType(MediaType.parseMediaType("application/octet-stream"))
+                .body(new InputStreamResource(bis));
+    }
+}

src/main/java/com/yunhai/bschclassmanage/entity/SysOperationLog.java

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+package com.yunhai.bschclassmanage.entity;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.hibernate.annotations.CreationTimestamp;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
+/**
+ * 系统审计日志实体（双轨之审计轨）。
+ * 与业务日志实体 OperationLogRecord / 表 operation_log 物理隔离、互不融合。
+ * 索引由 sqlscript/sys_operation_log.sql 负责创建，本实体不含 @Table(indexes)，
+ * 避免 ddl-auto=update 启动时重复建索引告警。
+ */
+@NoArgsConstructor
+@Data
+@Entity
+@Table(name = "sys_operation_log")
+public class SysOperationLog implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    /** 1-重要(删除) 2-次要(新增/编辑) 3-一般(查询) */
+    @Column(name = "log_level", nullable = false, columnDefinition = "TINYINT")
+    private Integer logLevel;
+
+    @Column(name = "operation_type", nullable = false, length = 16)
+    private String operationType;        // DELETE/CREATE/UPDATE/QUERY
+
+    @Column(name = "user_id")
+    private Integer userId;              // 来自 UserContext.getUserId()
+
+    @Column(name = "user_name", length = 64)
+    private String userName;             // 来自 UserContext.getUserName()
+
+    @Column(name = "sch_id")
+    private Integer schId;               // 多校隔离，来自 UserContext.getSchId()
+
+    @Column(name = "request_ip", nullable = false, length = 64)
+    private String requestIp;            // 客户端IP
+
+    @Column(name = "request_uri", nullable = false, length = 512)
+    private String requestUri;
+
+    @Column(name = "request_method", nullable = false, length = 16)
+    private String requestMethod;
+
+    @Column(name = "class_method", nullable = false, length = 512)
+    private String classMethod;
+
+    @Column(name = "request_params", columnDefinition = "TEXT")
+    private String requestParams;        // 脱敏后
+
+    @Column(name = "response_data", columnDefinition = "MEDIUMBLOB")
+    private byte[] responseData;         // GZIP 压缩后的响应 JSON
+
+    @Column(name = "status_code", nullable = false)
+    private Integer statusCode;          // 200 成功 / 500 异常
+
+    @Column(name = "cost_time", nullable = false)
+    private Long costTime;               // ms
+
+    @Column(name = "user_agent", length = 512)
+    private String userAgent;
+
+    @Column(name = "error_msg", columnDefinition = "TEXT")
+    private String errorMsg;             // 异常信息，截断 2000
+
+    @CreationTimestamp
+    @Column(name = "create_time", nullable = false, updatable = false, columnDefinition = "DATETIME(3)")
+    private LocalDateTime createTime;
+}

src/main/java/com/yunhai/bschclassmanage/enums/LogLevel.java

@@ -0,0 +1,24 @@
+package com.yunhai.bschclassmanage.enums;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+/**
+ * 审计日志级别：用于区分重要/次要/一般操作，配合保留期策略。
+ */
+@Getter
+@AllArgsConstructor
+public enum LogLevel {
+    IMPORTANT(1, "重要(删除)"),
+    SECONDARY(2, "次要(新增/编辑)"),
+    GENERAL(3, "一般(查询)");
+
+    private final int code;
+    private final String desc;
+
+    public static LogLevel fromCode(Integer code) {
+        if (code == null) return SECONDARY;
+        for (LogLevel l : values()) if (l.code == code) return l;
+        return SECONDARY;
+    }
+}

src/main/java/com/yunhai/bschclassmanage/model/tool/SyncUserDTO.java

@@ -0,0 +1,29 @@
+package com.yunhai.bschclassmanage.model.tool;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import lombok.Data;
+
+import java.util.List;
+
+/**
+ * 用户同步入参 DTO，结构与调用方实际下发的 JSON 保持一致。
+ * 注意：该 JSON 是调用方自定义格式，并非 yunhai 框架的 BoaUser，
+ * 因此用独立 DTO 承载，避免强转 / 反序列化失败。
+ */
+@Data
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class SyncUserDTO {
+
+    private Integer id;
+    private String account;
+    private String name;
+    private String idcard;
+    private String phone;
+    private String email;
+    private Integer gender;
+    private String birthday;
+    private Integer status;
+    private String profilePicture;
+    private List<SyncUserGroupDTO> groups;
+    private List<SyncUserRoleDTO> roleList;
+}

src/main/java/com/yunhai/bschclassmanage/model/tool/SyncUserGroupDTO.java

@@ -0,0 +1,17 @@
+package com.yunhai.bschclassmanage.model.tool;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import lombok.Data;
+
+/**
+ * 同步用户中的班级/分组节点，对应 JSON 的 groups 元素。
+ * 例：{"groupId":12,"no":null,"schoolId":3}
+ */
+@Data
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class SyncUserGroupDTO {
+
+    private Integer groupId;
+    private Integer no;
+    private Integer schoolId;
+}

src/main/java/com/yunhai/bschclassmanage/model/tool/SyncUserRoleDTO.java

@@ -0,0 +1,16 @@
+package com.yunhai.bschclassmanage.model.tool;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import lombok.Data;
+
+/**
+ * 同步用户中的角色节点，对应 JSON 的 roleList 元素。
+ * 例：{"roleId":5,"schId":3}
+ */
+@Data
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class SyncUserRoleDTO {
+
+    private Integer roleId;
+    private Integer schId;
+}

src/main/java/com/yunhai/bschclassmanage/scheduler/SysOperationLogCleanupTask.java

@@ -0,0 +1,25 @@
+package com.yunhai.bschclassmanage.scheduler;
+
+import com.yunhai.bschclassmanage.service.ISysOperationLogService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class SysOperationLogCleanupTask {
+
+    @Autowired
+    private ISysOperationLogService sysOperationLogService;
+
+    @Scheduled(cron = "0 30 3 * * ?")  // 每日 03:30（与业务零点任务错峰）
+    public void run() {
+        try {
+            long deleted = sysOperationLogService.cleanupExpired();
+            log.info("审计日志定时清理完成, 删除{}条", deleted);
+        } catch (Exception e) {
+            log.error("审计日志定时清理失败", e);
+        }
+    }
+}

src/main/java/com/yunhai/bschclassmanage/service/ISysOperationLogService.java

@@ -0,0 +1,24 @@
+package com.yunhai.bschclassmanage.service;
+
+import com.yunhai.bschclassmanage.entity.SysOperationLog;
+import com.yunhai.bschclassmanage.model.vo.PageVO;
+import org.springframework.data.domain.Pageable;
+
+public interface ISysOperationLogService {
+    /** 切面 finally 调用，@Async("auditLogExecutor") + REQUIRES_NEW，失败仅记日志 */
+    void saveAsync(SysOperationLog entity);
+
+    /** 分页查询（不含 response_data 投影；实体直查，初版简单先行） */
+    PageVO<SysOperationLog> pageQuery(Integer schId, String uri, String method,
+                                      Integer statusCode, Integer logLevel,
+                                      Integer userId, Pageable pageable);
+
+    /** 取单条（含 response_data）用于下载 */
+    SysOperationLog getById(Long id);
+
+    /** 解压某条响应原文 */
+    String getResponseData(Long id);
+
+    /** 定时清理，返回删除条数 */
+    long cleanupExpired();
+}

src/main/java/com/yunhai/bschclassmanage/service/impl/SysOperationLogServiceImpl.java

@@ -0,0 +1,96 @@
+package com.yunhai.bschclassmanage.service.impl;
+
+import com.yunhai.bschclassmanage.Repository.SysOperationLogRepository;
+import com.yunhai.bschclassmanage.entity.SysOperationLog;
+import com.yunhai.bschclassmanage.model.vo.PageVO;
+import com.yunhai.bschclassmanage.service.ISysOperationLogService;
+import com.yunhai.bschclassmanage.utils.GzipUtil;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.jpa.domain.Specification;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
+
+import javax.persistence.criteria.Predicate;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+@Slf4j
+@Service
+public class SysOperationLogServiceImpl implements ISysOperationLogService {
+
+    private static final int GENERAL_RETENTION_MONTHS = 12;     // 一般(查询) 12 个月
+    private static final int IMPORTANT_RETENTION_MONTHS = 36;   // 重要/次要 36 个月
+
+    @Autowired
+    private SysOperationLogRepository repository;
+
+    @Async("auditLogExecutor")
+    @Override
+    @Transactional(propagation = Propagation.REQUIRES_NEW)
+    public void saveAsync(SysOperationLog entity) {
+        try {
+            repository.save(entity);
+        } catch (Exception e) {
+            log.error("审计日志异步落库失败, uri={}, method={}",
+                    entity.getRequestUri(), entity.getRequestMethod(), e);
+        }
+    }
+
+    @Override
+    public PageVO<SysOperationLog> pageQuery(Integer schId, String uri, String method,
+                                             Integer statusCode, Integer logLevel,
+                                             Integer userId, Pageable pageable) {
+        Specification<SysOperationLog> spec = (root, query, cb) -> {
+            List<Predicate> ps = new ArrayList<>();
+            if (schId != null) ps.add(cb.equal(root.get("schId").as(Integer.class), schId));
+            if (StringUtils.isNotBlank(uri)) ps.add(cb.like(root.get("requestUri").as(String.class), "%" + uri + "%"));
+            if (StringUtils.isNotBlank(method)) ps.add(cb.equal(root.get("requestMethod").as(String.class), method.toUpperCase()));
+            if (statusCode != null) ps.add(cb.equal(root.get("statusCode").as(Integer.class), statusCode));
+            if (logLevel != null) ps.add(cb.equal(root.get("logLevel").as(Integer.class), logLevel));
+            if (userId != null) ps.add(cb.equal(root.get("userId").as(Integer.class), userId));
+            return cb.and(ps.toArray(new Predicate[0]));
+        };
+        Pageable page = pageable;
+        if (!page.getSort().isSorted()) {
+            page = PageRequest.of(page.getPageNumber(), page.getPageSize(),
+                    Sort.by(Sort.Direction.DESC, "createTime"));
+        }
+        Page<SysOperationLog> p = repository.findAll(spec, page);
+        // 注意：response_data (MEDIUMBLOB) 会随实体加载，若列表性能敏感，可改用投影 VO 排除该字段
+        return new PageVO<>(p.getNumber() + 1, p.getSize(), p.getTotalElements(), p.getContent());
+    }
+
+    @Override
+    public SysOperationLog getById(Long id) {
+        return repository.findById(id).orElse(null);
+    }
+
+    @Override
+    public String getResponseData(Long id) {
+        SysOperationLog e = getById(id);
+        return (e != null && e.getResponseData() != null) ? GzipUtil.decompress(e.getResponseData()) : null;
+    }
+
+    @Override
+    @Transactional
+    public long cleanupExpired() {
+        LocalDateTime now = LocalDateTime.now();
+        LocalDateTime generalDeadline = now.minusMonths(GENERAL_RETENTION_MONTHS);
+        LocalDateTime importantDeadline = now.minusMonths(IMPORTANT_RETENTION_MONTHS);
+        long deleted = repository.deleteByLogLevelAndCreateTimeBefore(3, generalDeadline)
+                + repository.deleteByLogLevelAndCreateTimeBefore(2, importantDeadline)
+                + repository.deleteByLogLevelAndCreateTimeBefore(1, importantDeadline);
+        log.info("审计日志清理完成, 删除{}条(一般截止={}, 重要/次要截止={})",
+                deleted, generalDeadline, importantDeadline);
+        return deleted;
+    }
+}

src/main/java/com/yunhai/bschclassmanage/utils/GzipUtil.java

@@ -0,0 +1,40 @@
+package com.yunhai.bschclassmanage.utils;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
+
+/**
+ * GZIP 压缩/解压，用于审计日志响应体（MEDIUMBLOB）存储。
+ */
+public class GzipUtil {
+    private static final int BUFFER_SIZE = 4096;
+
+    public static byte[] compress(String data) {
+        if (data == null) return null;
+        try (ByteArrayOutputStream out = new ByteArrayOutputStream();
+             GZIPOutputStream gzip = new GZIPOutputStream(out)) {
+            gzip.write(data.getBytes(StandardCharsets.UTF_8));
+            gzip.finish();
+            return out.toByteArray();
+        } catch (Exception e) {
+            throw new RuntimeException("GZIP 压缩失败", e);
+        }
+    }
+
+    public static String decompress(byte[] data) {
+        if (data == null || data.length == 0) return null;
+        try (ByteArrayInputStream in = new ByteArrayInputStream(data);
+             GZIPInputStream gzip = new GZIPInputStream(in);
+             ByteArrayOutputStream out = new ByteArrayOutputStream()) {
+            byte[] buf = new byte[BUFFER_SIZE];
+            int n;
+            while ((n = gzip.read(buf)) > 0) out.write(buf, 0, n);
+            return out.toString(StandardCharsets.UTF_8.name());
+        } catch (Exception e) {
+            throw new RuntimeException("GZIP 解压失败", e);
+        }
+    }
+}

src/main/java/com/yunhai/bschclassmanage/utils/OperationLogResolver.java

@@ -0,0 +1,38 @@
+package com.yunhai.bschclassmanage.utils;
+
+import com.yunhai.bschclassmanage.enums.LogLevel;
+import org.apache.commons.lang3.StringUtils;
+
+/**
+ * 审计日志级别/类型解析：根据 HTTP 方法 + URI + 方法名推断。
+ * 对齐本项目命名（save/import/upload 视为新增，delete/del/remove 视为删除）。
+ */
+public class OperationLogResolver {
+    private static final String[] DELETE_KEYWORDS = {"delete", "del", "remove"};
+    private static final String[] CREATE_KEYWORDS = {"add", "create", "insert", "save", "import", "upload"};
+
+    public static LogLevel resolveLevel(String httpMethod, String uri, String methodName) {
+        if (StringUtils.isBlank(httpMethod)) return LogLevel.SECONDARY;
+        String m = httpMethod.toUpperCase();
+        if ("GET".equals(m)) return LogLevel.GENERAL;
+        if ("DELETE".equals(m)) return LogLevel.IMPORTANT;
+        if (containsAny(uri, methodName, DELETE_KEYWORDS)) return LogLevel.IMPORTANT;
+        return LogLevel.SECONDARY;
+    }
+
+    public static String resolveOperationType(String httpMethod, String uri, String methodName) {
+        if (StringUtils.isBlank(httpMethod)) return "UPDATE";
+        String m = httpMethod.toUpperCase();
+        if ("GET".equals(m)) return "QUERY";
+        if ("DELETE".equals(m)) return "DELETE";
+        if (containsAny(uri, methodName, DELETE_KEYWORDS)) return "DELETE";
+        if (containsAny(uri, methodName, CREATE_KEYWORDS)) return "CREATE";
+        return "UPDATE";
+    }
+
+    private static boolean containsAny(String uri, String methodName, String[] keywords) {
+        String text = StringUtils.lowerCase(uri) + " " + StringUtils.lowerCase(methodName);
+        for (String kw : keywords) if (StringUtils.contains(text, kw)) return true;
+        return false;
+    }
+}

src/main/java/com/yunhai/bschclassmanage/utils/SensitiveDataUtil.java

@@ -0,0 +1,47 @@
+package com.yunhai.bschclassmanage.utils;
+
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * 日志脱敏：对 request_params / response_data 中的敏感字段值掩码为 ***
+ * 默认敏感字段：password,pwd,secret,token,appSecret,accessKey,idCard,phone,mobile,credential
+ * 脱敏失败返回原文，绝不阻断主流程。
+ */
+public class SensitiveDataUtil {
+
+    private static volatile Set<String> SENSITIVE_KEYS = new HashSet<>(Arrays.asList(
+            "password", "pwd", "pass", "secret", "token", "appsecret", "accesskey",
+            "idcard", "phone", "mobile", "credential"
+    ));
+
+    private static volatile Pattern FIELD_PATTERN = buildPattern();
+
+    private static Pattern buildPattern() {
+        return Pattern.compile(
+                "(\"(?i:(" + String.join("|", SENSITIVE_KEYS) + "))\"\\s*:\\s*)\"?[^,}\\s\"]+\"?",
+                Pattern.CASE_INSENSITIVE);
+    }
+
+    public static void setSensitiveKeys(Set<String> keys) {
+        if (keys != null && !keys.isEmpty()) {
+            SENSITIVE_KEYS = new HashSet<>(keys);
+            FIELD_PATTERN = buildPattern();
+        }
+    }
+
+    public static String mask(String json) {
+        if (StringUtils.isBlank(json)) return json;
+        try {
+            Matcher m = FIELD_PATTERN.matcher(json);
+            return m.replaceAll("$1\"***\"");
+        } catch (Exception e) {
+            return json;
+        }
+    }
+}

操作日志落地方案.md

@@ -0,0 +1,878 @@
+# 操作日志方案 · bschclassmanage 双轨版
+
+> 依据：《操作日志模块跨项目落地方案》（UserBase 审计流派）+ 本项目现状实测。
+> 核心策略：**双轨物理隔离**。现有 `OperationLogRecord` / `operation_log` 业务日志轨**完全不动**；新建 `SysOperationLog` / `sys_operation_log` 系统审计日志轨，按参考方案独立落地。两轨各自独立实体、独立表、独立切面、独立服务、独立控制器，互不融合、互不污染。
+
+---
+
+## 1. 双轨总览
+
+```
+┌─────────────────────────────────────────────────────────────────────┐
+│                      HTTP 请求                                       │
+└──────────────────────────────────┬──────────────────────────────────┘
+                                   ▼
+┌──────────────────────────────────────────────────────────────────────┐
+│  ControllerUserContextAspect  (Order 1, 现有, 不改)                  │
+│  填充 UserContext (userId/userName/schId/ip/type)，finally clear     │
+└──────────────────────────────────┬──────────────────────────────────┘
+                                   ▼
+┌──────────────────────────────────────────────────────────────────────┐
+│  轨一·业务日志：OperationLogAspect  (Order 2, 现有, 不改)            │
+│  触发：仅 @OperationLog(module, description) 注解方法                │
+│  能力：SpEL #{#param}/#{#result} + LogContextHolder 动态描述          │
+│  落库：operation_log  → operator/module/content/schId                │
+│  定位：用户可见的业务操作历史（"把学生X从A班转到B班"）                │
+└──────────────────────────────────┬──────────────────────────────────┘
+                                   ▼
+┌──────────────────────────────────────────────────────────────────────┐
+│  轨二·审计日志：SysOperationLogAspect  (Order 3, 新增)               │
+│  触发：execution(* ...controller..*.*(..)) 全量拦截所有 Controller    │
+│  排除：LogController + SysOperationLogController（防递归）            │
+│  能力：URI/方法/级别/类型/参数(脱敏)/响应(GZIP)/状态码/耗时/错误      │
+│  落库：sys_operation_log  → 全量 HTTP 审计                            │
+│  定位：运维/合规/排障（"谁在何时调了什么接口、成没成、耗时多久"）     │
+└──────────────────────────────────┬──────────────────────────────────┘
+                                   ▼
+                              目标业务方法
+```
+
+### 1.1 两轨差异对照
+
+| 维度 | 轨一·业务日志（现有不动） | 轨二·审计日志（新建） |
+|---|---|---|
+| 实体 | `OperationLogRecord` | `SysOperationLog`（新建） |
+| 表 | `operation_log` | `sys_operation_log`（新建） |
+| 触发 | `@OperationLog` 注解，选择性 | 全量拦截所有 Controller，无注解依赖 |
+| 语义 | 富业务语义（SpEL + 动态描述） | 无语义，纯 HTTP 审计 |
+| 字段 | operator/module/content/schId/ip/operateTime | logLevel/operationType/uri/method/params/response(BLOB)/statusCode/costTime/errorMsg/userAgent + userId/userName/schId/ip |
+| 响应 | 不存 | GZIP 压缩存 MEDIUMBLOB |
+| 级别 | 无 | 三级（重要/次要/一般） |
+| 量级 | 小（仅写操作） | 大（含 GET 全量） |
+| 服务 | `ILogService`/`LogService` + 模块 `*LogService` | `ISysOperationLogService`/`SysOperationLogServiceImpl`（新建） |
+| 控制器 | `LogController` search/systemSearch | `SysOperationLogController` auditSearch/download（新建） |
+| 异步池 | `logExecutor`（现有） | `auditLogExecutor`（新建独立池，隔离防互相挤压） |
+| 清理 | 无（量小） | 定时清理（一般12月/重要36月） |
+
+### 1.2 两轨协同关系
+
+- **写操作**（标了 `@OperationLog` 的 POST/PUT/DELETE）：两轨都记——`operation_log` 留业务语义，`sys_operation_log` 留审计记录，通过 `operateTime` + `userId` + `requestUri` 关联。
+- **GET 查询**：只在 `sys_operation_log`（业务轨不触发，因无注解）。
+- **未标注解的写操作**：只在 `sys_operation_log`（业务轨不触发）。
+- 查询时各查各表，业务日志列表与审计日志列表物理隔离，互不干扰。
+
+---
+
+## 2. 轨一：业务日志（现有，完全保留，零改动）
+
+下列组件**全部保持现状，本次方案不修改**：
+
+| 组件 | 路径 | 说明 |
+|---|---|---|
+| 实体 | `entity/OperationLogRecord` | 表 `operation_log`，字段不变 |
+| 注解 | `annotation/OperationLog` | `module()` + `description()`（SpEL）不变 |
+| 切面 | `aspect/OperationLogAspect` | Order(2)，`@Around("@annotation(operationLog))` 不变 |
+| 动态描述 | `utils/LogContextHolder` | 不变 |
+| 服务 | `service/ILogService` + `service/com/LogService` | `save`/`saveAllLogAsync`/`search`/`buildLogRecord` 不变 |
+| 模块日志 | `service/impl/{student,teacher,classes,teachs}/*LogService` | 富语义文案构建，不变 |
+| 仓储 | `Repository/OperationLogRecordRepository` | 不变 |
+| 控制器 | `controller/api/LogController` | `search`/`systemSearch` 不变 |
+| 常量 | `model/constant/LogModule` | 不变 |
+
+> 业务日志轨已稳定运行，本次只做"加法"——新建审计轨，不碰任何业务日志代码。
+
+---
+
+## 3. 轨二：系统审计日志（新建）
+
+包名 `com.yunhai.bschclassmanage.*`，与业务日志轨物理隔离。标注 ✅ 新增。
+
+### 3.1 ✅ 实体 `entity/SysOperationLog.java`
+
+```java
+package com.yunhai.bschclassmanage.entity;
+
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+import org.hibernate.annotations.CreationTimestamp;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
+@NoArgsConstructor
+@Data
+@Entity
+@Table(name = "sys_operation_log", indexes = {
+        @Index(name = "idx_sol_create_time", columnList = "create_time"),
+        @Index(name = "idx_sol_user_time", columnList = "user_id, create_time"),
+        @Index(name = "idx_sol_sch_time", columnList = "sch_id, create_time"),
+        @Index(name = "idx_sol_uri_time", columnList = "request_uri, create_time"),
+        @Index(name = "idx_sol_level_time", columnList = "log_level, create_time")
+})
+@EqualsAndHashCode(onlyExplicitlyIncluded = true, callSuper = false)
+public class SysOperationLog implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    @EqualsAndHashCode.Include
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    /** 1-重要(删除) 2-次要(新增/编辑) 3-一般(查询) */
+    @Column(name = "log_level", nullable = false, columnDefinition = "TINYINT")
+    private Integer logLevel;
+
+    @Column(name = "operation_type", nullable = false, length = 16)
+    private String operationType;        // DELETE/CREATE/UPDATE/QUERY
+
+    @Column(name = "user_id")
+    private Integer userId;              // 来自 UserContext.getUserId()
+
+    @Column(name = "user_name", length = 64)
+    private String userName;             // 来自 UserContext.getUserName()
+
+    @Column(name = "sch_id")
+    private Integer schId;               // 多校隔离，来自 UserContext.getSchId()
+
+    @Column(name = "request_ip", nullable = false, length = 64)
+    private String requestIp;
+
+    @Column(name = "request_uri", nullable = false, length = 512)
+    private String requestUri;
+
+    @Column(name = "request_method", nullable = false, length = 16)
+    private String requestMethod;
+
+    @Column(name = "class_method", nullable = false, length = 512)
+    private String classMethod;
+
+    @Column(name = "request_params", columnDefinition = "TEXT")
+    private String requestParams;        // 脱敏后
+
+    @Column(name = "response_data", columnDefinition = "MEDIUMBLOB")
+    private byte[] responseData;         // GZIP 压缩后的响应 JSON
+
+    @Column(name = "status_code", nullable = false)
+    private Integer statusCode;          // 200 成功 / 500 异常
+
+    @Column(name = "cost_time", nullable = false)
+    private Long costTime;               // ms
+
+    @Column(name = "user_agent", length = 512)
+    private String userAgent;
+
+    @Column(name = "error_msg", columnDefinition = "TEXT")
+    private String errorMsg;             // 异常信息，截断 2000
+
+    @CreationTimestamp
+    @Column(name = "create_time", nullable = false, updatable = false, columnDefinition = "DATETIME(3)")
+    private LocalDateTime createTime;
+}
+```
+
+> 相比参考方案，补了 `sch_id` 字段（本项目多校系统，审计日志也需按校隔离查询）和 `user_name`（直接存用户名，不靠 getRemoteUser，规避参考方案第 7.5 节坑）。
+
+### 3.2 ✅ 建表 DDL `sqlscript/sys_operation_log.sql`
+
+```sql
+-- 系统审计日志表（双轨之审计轨，与业务日志表 operation_log 物理隔离）
+CREATE TABLE `sys_operation_log` (
+  `id` BIGINT NOT NULL AUTO_INCREMENT,
+  `log_level` TINYINT NOT NULL COMMENT '1-重要(删除) 2-次要(新增/编辑) 3-一般(查询)',
+  `operation_type` VARCHAR(16) NOT NULL COMMENT 'DELETE/CREATE/UPDATE/QUERY',
+  `user_id` INT DEFAULT NULL COMMENT '操作人ID（来自UserContext）',
+  `user_name` VARCHAR(64) DEFAULT NULL COMMENT '操作人姓名（来自UserContext）',
+  `sch_id` INT DEFAULT NULL COMMENT '学校ID（多校隔离）',
+  `request_ip` VARCHAR(64) NOT NULL COMMENT '客户端IP',
+  `request_uri` VARCHAR(512) NOT NULL COMMENT '请求URI',
+  `request_method` VARCHAR(16) NOT NULL COMMENT 'HTTP方法',
+  `class_method` VARCHAR(512) NOT NULL COMMENT '类名.方法名',
+  `request_params` TEXT COMMENT '请求参数（脱敏后）',
+  `response_data` MEDIUMBLOB COMMENT 'GZIP压缩后的响应JSON',
+  `status_code` INT NOT NULL COMMENT '200成功 500异常',
+  `cost_time` BIGINT NOT NULL COMMENT '耗时ms',
+  `user_agent` VARCHAR(512) DEFAULT NULL,
+  `error_msg` TEXT COMMENT '异常信息（截断2000）',
+  `create_time` DATETIME(3) NOT NULL COMMENT '记录时间',
+  PRIMARY KEY (`id`),
+  KEY `idx_sol_create_time` (`create_time`),
+  KEY `idx_sol_user_time` (`user_id`, `create_time`),
+  KEY `idx_sol_sch_time` (`sch_id`, `create_time`),
+  KEY `idx_sol_uri_time` (`request_uri`, `create_time`),
+  KEY `idx_sol_level_time` (`log_level`, `create_time`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='系统审计日志（HTTP接口级，全量记录）';
+```
+
+> `ddl-auto: update` 会自动建表，但**不会建索引**。建议手动执行此 DDL 一次，索引齐全。之后 JPA 只管加列。
+
+### 3.3 ✅ 枚举 `enums/LogLevel.java`
+
+```java
+package com.yunhai.bschclassmanage.enums;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public enum LogLevel {
+    IMPORTANT(1, "重要(删除)"),
+    SECONDARY(2, "次要(新增/编辑)"),
+    GENERAL(3, "一般(查询)");
+
+    private final int code;
+    private final String desc;
+
+    public static LogLevel fromCode(Integer code) {
+        if (code == null) return SECONDARY;
+        for (LogLevel l : values()) if (l.code == code) return l;
+        return SECONDARY;
+    }
+}
+```
+
+### 3.4 ✅ 解析器 `utils/OperationLogResolver.java`
+
+```java
+package com.yunhai.bschclassmanage.utils;
+
+import com.yunhai.bschclassmanage.enums.LogLevel;
+import org.apache.commons.lang3.StringUtils;
+
+public class OperationLogResolver {
+    private static final String[] DELETE_KEYWORDS = {"delete", "del", "remove"};
+    private static final String[] CREATE_KEYWORDS = {"add", "create", "insert", "save", "import", "upload"};
+
+    public static LogLevel resolveLevel(String httpMethod, String uri, String methodName) {
+        if (StringUtils.isBlank(httpMethod)) return LogLevel.SECONDARY;
+        String m = httpMethod.toUpperCase();
+        if ("GET".equals(m)) return LogLevel.GENERAL;
+        if ("DELETE".equals(m)) return LogLevel.IMPORTANT;
+        if (containsAny(uri, methodName, DELETE_KEYWORDS)) return LogLevel.IMPORTANT;
+        return LogLevel.SECONDARY;
+    }
+
+    public static String resolveOperationType(String httpMethod, String uri, String methodName) {
+        if (StringUtils.isBlank(httpMethod)) return "UPDATE";
+        String m = httpMethod.toUpperCase();
+        if ("GET".equals(m)) return "QUERY";
+        if ("DELETE".equals(m)) return "DELETE";
+        if (containsAny(uri, methodName, DELETE_KEYWORDS)) return "DELETE";
+        if (containsAny(uri, methodName, CREATE_KEYWORDS)) return "CREATE";
+        return "UPDATE";
+    }
+
+    private static boolean containsAny(String uri, String methodName, String[] keywords) {
+        String text = StringUtils.lowerCase(uri) + " " + StringUtils.lowerCase(methodName);
+        for (String kw : keywords) if (StringUtils.contains(text, kw)) return true;
+        return false;
+    }
+}
+```
+
+> CREATE 关键词补了 `save/import/upload`，对齐本项目命名（`saveSchBinSchsystem`、`importLogs`）。
+
+### 3.5 ✅ 工具类 `utils/GzipUtil.java`
+
+```java
+package com.yunhai.bschclassmanage.utils;
+
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.util.zip.*;
+
+public class GzipUtil {
+    private static final int BUFFER_SIZE = 4096;
+
+    public static byte[] compress(String data) {
+        if (data == null) return null;
+        try (ByteArrayOutputStream out = new ByteArrayOutputStream();
+             GZIPOutputStream gzip = new GZIPOutputStream(out)) {
+            gzip.write(data.getBytes(StandardCharsets.UTF_8));
+            gzip.finish();
+            return out.toByteArray();
+        } catch (IOException e) {
+            throw new RuntimeException("GZIP 压缩失败", e);
+        }
+    }
+
+    public static String decompress(byte[] data) {
+        if (data == null || data.length == 0) return null;
+        try (ByteArrayInputStream in = new ByteArrayInputStream(data);
+             GZIPInputStream gzip = new GZIPInputStream(in);
+             ByteArrayOutputStream out = new ByteArrayOutputStream()) {
+            byte[] buf = new byte[BUFFER_SIZE];
+            int n;
+            while ((n = gzip.read(buf)) > 0) out.write(buf, 0, n);
+            return out.toString(StandardCharsets.UTF_8.name());
+        } catch (IOException e) {
+            throw new RuntimeException("GZIP 解压失败", e);
+        }
+    }
+}
+```
+
+### 3.6 ✅ 脱敏工具 `utils/SensitiveDataUtil.java`
+
+```java
+package com.yunhai.bschclassmanage.utils;
+
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * 日志脱敏：对 request_params / response_data 中的敏感字段值掩码为 ***
+ * 默认敏感字段：password,pwd,secret,token,appSecret,accessKey,idCard,phone,mobile,credential
+ * 脱敏失败返回原文，绝不阻断主流程。
+ */
+public class SensitiveDataUtil {
+
+    private static volatile Set<String> SENSITIVE_KEYS = new HashSet<>(Arrays.asList(
+            "password", "pwd", "pass", "secret", "token", "appsecret", "accesskey",
+            "idcard", "phone", "mobile", "credential"
+    ));
+
+    private static volatile Pattern FIELD_PATTERN = buildPattern();
+
+    private static Pattern buildPattern() {
+        return Pattern.compile(
+                "(\"(?i:(" + String.join("|", SENSITIVE_KEYS) + "))\"\\s*:\\s*)\"?[^,}\\s\"]+\"?",
+                Pattern.CASE_INSENSITIVE);
+    }
+
+    public static void setSensitiveKeys(Set<String> keys) {
+        if (keys != null && !keys.isEmpty()) {
+            SENSITIVE_KEYS = new HashSet<>(keys);
+            FIELD_PATTERN = buildPattern();
+        }
+    }
+
+    public static String mask(String json) {
+        if (StringUtils.isBlank(json)) return json;
+        try {
+            Matcher m = FIELD_PATTERN.matcher(json);
+            return m.replaceAll("$1\"***\"");
+        } catch (Exception e) {
+            return json;
+        }
+    }
+}
+```
+
+### 3.7 ✅ 仓储 `Repository/SysOperationLogRepository.java`
+
+```java
+package com.yunhai.bschclassmanage.Repository;
+
+import com.yunhai.bschclassmanage.entity.SysOperationLog;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+import org.springframework.stereotype.Repository;
+
+import java.time.LocalDateTime;
+
+@Repository
+public interface SysOperationLogRepository
+        extends JpaRepository<SysOperationLog, Long>, JpaSpecificationExecutor<SysOperationLog> {
+
+    /** 按级别 + 截止时间批量删除（单条 DELETE，定时清理用） */
+    long deleteByLogLevelAndCreateTimeBefore(Integer logLevel, LocalDateTime time);
+}
+```
+
+### 3.8 ✅ 服务接口 `service/ISysOperationLogService.java`
+
+```java
+package com.yunhai.bschclassmanage.service;
+
+import com.yunhai.bschclassmanage.entity.SysOperationLog;
+import com.yunhai.bschclassmanage.model.vo.PageVO;
+import org.springframework.data.domain.Pageable;
+
+public interface ISysOperationLogService {
+    /** 切面 finally 调用，@Async("auditLogExecutor") + REQUIRES_NEW，失败仅记日志 */
+    void saveAsync(SysOperationLog entity);
+
+    /** 分页查询（不含 response_data，用 Specification 投影或直接查实体） */
+    PageVO<SysOperationLog> pageQuery(Integer schId, String uri, String method,
+                                      Integer statusCode, Integer logLevel,
+                                      Integer userId, Pageable pageable);
+
+    /** 取单条（含 response_data）用于下载 */
+    SysOperationLog getById(Long id);
+
+    /** 解压某条响应原文 */
+    String getResponseData(Long id);
+
+    /** 定时清理，返回删除条数 */
+    long cleanupExpired();
+}
+```
+
+### 3.9 ✅ 服务实现 `service/impl/SysOperationLogServiceImpl.java`
+
+```java
+package com.yunhai.bschclassmanage.service.impl;
+
+import com.yunhai.bschclassmanage.Repository.SysOperationLogRepository;
+import com.yunhai.bschclassmanage.entity.SysOperationLog;
+import com.yunhai.bschclassmanage.model.vo.PageVO;
+import com.yunhai.bschclassmanage.service.ISysOperationLogService;
+import com.yunhai.bschclassmanage.utils.GzipUtil;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.jpa.domain.Specification;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
+
+import javax.persistence.criteria.Predicate;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+@Slf4j
+@Service
+public class SysOperationLogServiceImpl implements ISysOperationLogService {
+
+    private static final int GENERAL_RETENTION_MONTHS = 12;     // 一般(查询) 12 个月
+    private static final int IMPORTANT_RETENTION_MONTHS = 36;   // 重要/次要 36 个月
+
+    @Autowired
+    private SysOperationLogRepository repository;
+
+    @Async("auditLogExecutor")
+    @Override
+    @Transactional(propagation = Propagation.REQUIRES_NEW)
+    public void saveAsync(SysOperationLog entity) {
+        try {
+            repository.save(entity);
+        } catch (Exception e) {
+            log.error("审计日志异步落库失败, uri={}, method={}",
+                    entity.getRequestUri(), entity.getRequestMethod(), e);
+        }
+    }
+
+    @Override
+    public PageVO<SysOperationLog> pageQuery(Integer schId, String uri, String method,
+                                             Integer statusCode, Integer logLevel,
+                                             Integer userId, Pageable pageable) {
+        Specification<SysOperationLog> spec = (root, cb, cq) -> {
+            List<Predicate> ps = new ArrayList<>();
+            if (schId != null) ps.add(cb.equal(root.get("schId"), schId));
+            if (StringUtils.isNotBlank(uri)) ps.add(cb.like(root.get("requestUri"), "%" + uri + "%"));
+            if (StringUtils.isNotBlank(method)) ps.add(cb.equal(root.get("requestMethod"), method.toUpperCase()));
+            if (statusCode != null) ps.add(cb.equal(root.get("statusCode"), statusCode));
+            if (logLevel != null) ps.add(cb.equal(root.get("logLevel"), logLevel));
+            if (userId != null) ps.add(cb.equal(root.get("userId"), userId));
+            return cb.and(ps.toArray(new Predicate[0]));
+        };
+        Pageable page = pageable;
+        if (!page.getSort().isSorted()) {
+            page = PageRequest.of(page.getPageNumber(), page.getPageSize(),
+                    Sort.by(Sort.Direction.DESC, "createTime"));
+        }
+        Page<SysOperationLog> p = repository.findAll(spec, page);
+        // 注意：response_data (MEDIUMBLOB) 会随实体加载，若列表性能敏感，可改用投影 VO 排除该字段
+        return new PageVO<>(p.getNumber() + 1, p.getSize(), p.getTotalElements(), p.getContent());
+    }
+
+    @Override
+    public SysOperationLog getById(Long id) {
+        return repository.findById(id).orElse(null);
+    }
+
+    @Override
+    public String getResponseData(Long id) {
+        SysOperationLog e = getById(id);
+        return (e != null && e.getResponseData() != null) ? GzipUtil.decompress(e.getResponseData()) : null;
+    }
+
+    @Override
+    @Transactional
+    public long cleanupExpired() {
+        LocalDateTime now = LocalDateTime.now();
+        LocalDateTime generalDeadline = now.minusMonths(GENERAL_RETENTION_MONTHS);
+        LocalDateTime importantDeadline = now.minusMonths(IMPORTANT_RETENTION_MONTHS);
+        long deleted = repository.deleteByLogLevelAndCreateTimeBefore(3, generalDeadline)
+                + repository.deleteByLogLevelAndCreateTimeBefore(2, importantDeadline)
+                + repository.deleteByLogLevelAndCreateTimeBefore(1, importantDeadline);
+        log.info("审计日志清理完成, 删除{}条(一般截止={}, 重要/次要截止={})",
+                deleted, generalDeadline, importantDeadline);
+        return deleted;
+    }
+}
+```
+
+> **列表性能**：若审计日志量大、列表查询慢，可新增 `SysOperationLogListVo`（不含 `responseData`），用 CriteriaBuilder.construct 投影查询，参考业务日志轨的写法。初版先用实体直查，简单先行。
+
+### 3.10 ✅ 切面 `aspect/SysOperationLogAspect.java`（核心）
+
+```java
+package com.yunhai.bschclassmanage.aspect;
+
+import com.alibaba.fastjson.JSON;
+import com.yunhai.bschclassmanage.entity.SysOperationLog;
+import com.yunhai.bschclassmanage.service.ISysOperationLogService;
+import com.yunhai.bschclassmanage.utils.*;
+import lombok.extern.slf4j.Slf4j;
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.reflect.MethodSignature;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * 系统审计日志切面（双轨之审计轨）
+ * - 全量拦截 controller 包所有方法，不依赖注解
+ * - 排除日志查询控制器自身（防递归）
+ * - 与业务日志切面 OperationLogAspect(Order 2) 物理隔离，互不影响
+ */
+@Slf4j
+@Aspect
+@Component
+@Order(3)
+public class SysOperationLogAspect {
+
+    /** 排除的控制器（日志查询自身，防递归刷屏） */
+    private static final List<String> EXCLUDE_CONTROLLERS = Arrays.asList(
+            "com.yunhai.bschclassmanage.controller.api.LogController",          // 业务日志查询
+            "com.yunhai.bschclassmanage.controller.api.SysOperationLogController" // 审计日志查询
+    );
+    private static final int DEFAULT_MAX_RESPONSE_SIZE = 10240;
+
+    @Autowired
+    private ISysOperationLogService sysOperationLogService;
+
+    @Around("execution(* com.yunhai.bschclassmanage.controller..*.*(..))")
+    public Object around(ProceedingJoinPoint point) throws Throwable {
+        // 1. 排除日志控制器
+        String declType = point.getSignature().getDeclaringTypeName();
+        if (EXCLUDE_CONTROLLERS.contains(declType)) {
+            return point.proceed();
+        }
+
+        HttpServletRequest request = getRequest();
+        String httpMethod = request != null ? request.getMethod() : "";
+
+        long start = System.currentTimeMillis();
+        SysOperationLog entity = buildEntity(point, request, httpMethod);
+
+        Object result = null;
+        try {
+            result = point.proceed();
+            entity.setStatusCode(200);
+            fillResponse(entity, result, DEFAULT_MAX_RESPONSE_SIZE);
+            return result;
+        } catch (Throwable e) {
+            entity.setStatusCode(500);
+            entity.setErrorMsg(truncate(e.getMessage(), 2000));
+            throw e;
+        } finally {
+            entity.setCostTime(System.currentTimeMillis() - start);
+            sysOperationLogService.saveAsync(entity);
+        }
+    }
+
+    private SysOperationLog buildEntity(ProceedingJoinPoint point, HttpServletRequest request, String httpMethod) {
+        SysOperationLog e = new SysOperationLog();
+        e.setCreateTime(LocalDateTime.now());
+
+        // 用户信息（来自 UserContext，由 ControllerUserContextAspect Order1 已填充）
+        e.setUserId(UserContext.getUserId());
+        e.setUserName(StringUtils.hasText(UserContext.getUserName()) ? UserContext.getUserName() : "anonymous");
+        e.setSchId(UserContext.getSchId());
+        e.setRequestIp(StringUtils.hasText(UserContext.getIp()) ? UserContext.getIp() : OtherUtil.getClientIp());
+
+        String uri = request != null ? request.getRequestUri() : "";
+        String methodName = point.getSignature().getName();
+        e.setRequestUri(uri);
+        e.setRequestMethod(httpMethod);
+        e.setClassMethod(point.getTarget().getClass().getName() + "." + methodName);
+        e.setLogLevel(OperationLogResolver.resolveLevel(httpMethod, uri, methodName).getCode());
+        e.setOperationType(OperationLogResolver.resolveOperationType(httpMethod, uri, methodName));
+        if (request != null) {
+            e.setUserAgent(request.getHeader("User-Agent"));
+            e.setRequestParams(SensitiveDataUtil.mask(buildRequestParams(point, request)));
+        }
+        return e;
+    }
+
+    private String buildRequestParams(ProceedingJoinPoint point, HttpServletRequest request) {
+        try {
+            if (request != null && "GET".equalsIgnoreCase(request.getMethod())) {
+                String qs = request.getQueryString();
+                if (StringUtils.hasText(qs)) return qs;
+            }
+            Object[] args = point.getArgs();
+            if (args == null || args.length == 0) return "";
+            List<Object> filtered = new ArrayList<>();
+            for (Object arg : args) {
+                if (arg == null) continue;
+                if (arg instanceof HttpServletRequest || arg instanceof HttpServletResponse
+                        || arg instanceof HttpSession) continue;
+                filtered.add(arg);
+            }
+            return filtered.isEmpty() ? "" : JSON.toJSONString(filtered);
+        } catch (Exception ex) {
+            return "";
+        }
+    }
+
+    private void fillResponse(SysOperationLog e, Object result, int max) {
+        if (result == null) return;
+        try {
+            String resp = SensitiveDataUtil.mask(JSON.toJSONString(result));
+            if (resp.length() > max) resp = resp.substring(0, max) + "...[截断]";
+            e.setResponseData(GzipUtil.compress(resp));
+        } catch (Exception ex) {
+            log.warn("审计日志响应序列化失败, uri={}", e.getRequestUri(), ex);
+        }
+    }
+
+    private HttpServletRequest getRequest() {
+        ServletRequestAttributes a = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
+        return a != null ? a.getRequest() : null;
+    }
+
+    private String truncate(String s, int max) {
+        return s != null && s.length() > max ? s.substring(0, max) : s;
+    }
+}
+```
+
+> **与业务切面共存**：`OperationLogAspect` Order(2) 是 `@Around("@annotation(operationLog))`，只匹配标注方法；`SysOperationLogAspect` Order(3) 是 `execution(* ...controller..*)`，全量匹配。两者 pointcut 不同，互不干扰。标了 `@OperationLog` 的写操作会被两个切面都处理——业务切面记 `operation_log`（语义），审计切面记 `sys_operation_log`（审计），正是双轨所需。
+
+### 3.11 ✅ 控制器 `controller/api/SysOperationLogController.java`
+
+```java
+package com.yunhai.bschclassmanage.controller.api;
+
+import com.yunhai.bschclassmanage.config.Config;
+import com.yunhai.bschclassmanage.controller.BaseController;
+import com.yunhai.bschclassmanage.entity.SysOperationLog;
+import com.yunhai.bschclassmanage.model.vo.PageVO;
+import com.yunhai.bschclassmanage.service.ISysOperationLogService;
+import com.yunhai.bschclassmanage.utils.GzipUtil;
+import com.yunhai.bschclassmanage.utils.UserContext;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.InputStreamResource;
+import org.springframework.data.domain.Pageable;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.io.ByteArrayInputStream;
+import java.nio.charset.StandardCharsets;
+
+@RestController
+@RequestMapping(Config.API_PATH + "/syslog/")
+@CrossOrigin(originPatterns = {"*"}, allowCredentials = "true")
+public class SysOperationLogController extends BaseController {
+
+    @Autowired
+    private ISysOperationLogService sysOperationLogService;
+
+    /** 审计日志分页查询（默认按当前用户 schId 隔离） */
+    @GetMapping("list")
+    public PageVO<SysOperationLog> list(
+            @RequestParam(required = false) String uri,
+            @RequestParam(required = false) String method,
+            @RequestParam(required = false) Integer statusCode,
+            @RequestParam(required = false) Integer logLevel,
+            @RequestParam(required = false) Integer userId,
+            Pageable pageable) {
+        return sysOperationLogService.pageQuery(UserContext.getSchId(), uri, method,
+                statusCode, logLevel, userId, pageable);
+    }
+
+    /** 下载某条响应原文（GZIP 解压） */
+    @GetMapping("download/{id}")
+    public ResponseEntity<InputStreamResource> download(@PathVariable Long id) {
+        String data = sysOperationLogService.getResponseData(id);
+        if (data == null) data = "该条审计日志未记录响应数据";
+        ByteArrayInputStream bis = new ByteArrayInputStream(data.getBytes(StandardCharsets.UTF_8));
+        HttpHeaders headers = new HttpHeaders();
+        headers.add("Cache-Control", "no-cache, no-store, must-revalidate");
+        try {
+            headers.add(HttpHeaders.CONTENT_DISPOSITION,
+                    "attachment; filename=" + new String(("audit-" + id + ".txt").getBytes("gbk"), "iso8859-1"));
+        } catch (Exception ignore) {}
+        return ResponseEntity.ok().headers(headers)
+                .contentType(MediaType.parseMediaType("application/octet-stream"))
+                .body(new InputStreamResource(bis));
+    }
+}
+```
+
+### 3.12 ✅ 定时清理 `scheduler/SysOperationLogCleanupTask.java`
+
+```java
+package com.yunhai.bschclassmanage.scheduler;
+
+import com.yunhai.bschclassmanage.service.ISysOperationLogService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class SysOperationLogCleanupTask {
+
+    @Autowired
+    private ISysOperationLogService sysOperationLogService;
+
+    @Scheduled(cron = "0 30 3 * * ?")  // 每日 03:30（与业务零点任务错峰）
+    public void run() {
+        try {
+            long deleted = sysOperationLogService.cleanupExpired();
+            log.info("审计日志定时清理完成, 删除{}条", deleted);
+        } catch (Exception e) {
+            log.error("审计日志定时清理失败", e);
+        }
+    }
+}
+```
+
+### 3.13 ✅ 异步池 `config/AsyncConfig.java`（新增独立池，不动现有 logExecutor）
+
+```java
+package com.yunhai.bschclassmanage.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.scheduling.annotation.EnableAsync;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
+
+import java.util.concurrent.Executor;
+import java.util.concurrent.ThreadPoolExecutor;
+
+@Configuration
+@EnableAsync
+public class AsyncConfig {
+
+    /** 现有：业务日志异步池（保持不动） */
+    @Bean(name = "logExecutor")
+    public Executor logExecutor() {
+        ThreadPoolTaskExecutor ex = new ThreadPoolTaskExecutor();
+        ex.setCorePoolSize(2);
+        ex.setMaxPoolSize(5);
+        ex.setQueueCapacity(100);
+        ex.setThreadNamePrefix("log-");
+        ex.initialize();
+        return ex;
+    }
+
+    /** 新增：审计日志异步池（独立，避免与业务日志互相挤压；量大所以池更大） */
+    @Bean(name = "auditLogExecutor")
+    public Executor auditLogExecutor() {
+        ThreadPoolTaskExecutor ex = new ThreadPoolTaskExecutor();
+        ex.setCorePoolSize(4);
+        ex.setMaxPoolSize(16);
+        ex.setQueueCapacity(2000);
+        ex.setThreadNamePrefix("audit-log-");
+        ex.setRejectedExecutionHandler(new ThreadPoolExecutor.DiscardPolicy()); // 队列满丢弃，不拖垮主流程
+        ex.initialize();
+        return ex;
+    }
+}
+```
+
+> 现有 `logExecutor` 原样保留（不碰业务日志轨），仅**新增** `auditLogExecutor`。审计量大，池参数更大 + 拒绝策略 DiscardPolicy。
+
+---
+
+## 4. 复用的现有基础设施（不改）
+
+| 组件 | 复用方式 |
+|---|---|
+| `UserContext` | 审计切面直接读 `getUserId()/getUserName()/getSchId()/getIp()` |
+| `ControllerUserContextAspect` (Order 1) | 已在审计切面(Order 3)外层填充 UserContext，无需改 |
+| `OtherUtil.getClientIp()` | 审计切面 IP 兜底 |
+| `PageVO` | 审计查询返回值 |
+| `Config.API_PATH` | 审计控制器路径前缀 `/api/syslog/` |
+| `BaseController` | 审计控制器继承 |
+| fastjson / commons-lang3 | 已有依赖 |
+| `@EnableAsync @EnableScheduling` | 启动类已开启 |
+
+---
+
+## 5. 落地步骤 Checklist
+
+- [ ] 执行 `sqlscript/sys_operation_log.sql` 建表（含索引）
+- [ ] 新增 `entity/SysOperationLog.java`（3.1）
+- [ ] 新增 `enums/LogLevel.java`（3.3）
+- [ ] 新增 `utils/OperationLogResolver.java`（3.4）
+- [ ] 新增 `utils/GzipUtil.java`（3.5）
+- [ ] 新增 `utils/SensitiveDataUtil.java`（3.6）
+- [ ] 新增 `Repository/SysOperationLogRepository.java`（3.7）
+- [ ] 新增 `service/ISysOperationLogService.java` + `service/impl/SysOperationLogServiceImpl.java`（3.8、3.9）
+- [ ] 新增 `aspect/SysOperationLogAspect.java`（3.10）
+- [ ] 新增 `controller/api/SysOperationLogController.java`（3.11）
+- [ ] 新增 `scheduler/SysOperationLogCleanupTask.java`（3.12）
+- [ ] 改 `config/AsyncConfig.java`：新增 `auditLogExecutor`（保留现有 `logExecutor`）（3.13）
+- [ ] **不改动**：`OperationLogRecord`/`OperationLog`注解/`OperationLogAspect`/`LogService`/模块`*LogService`/`LogController`/`LogContextHolder`/`UserContextInterceptor`
+- [ ] 编译 + 启动，调一个 GET 接口 → 查 `sys_operation_log` 应有 level=3 记录
+- [ ] 调一个标了 `@OperationLog` 的写操作 → 查 `operation_log`（业务语义）+ `sys_operation_log`（审计）各一条
+- [ ] 验证 `/api/syslog/list` 分页 + `/api/syslog/download/{id}` 下载响应原文
+- [ ] 验证 `/api/log/search`（业务日志）不受影响
+
+---
+
+## 6. 风险与回滚
+
+| 风险 | 应对 |
+|---|---|
+| 审计切面全量拦截，所有 Controller 性能开销 | AOP 开销亚毫秒级；落库异步+独立池+REQUIRES_NEW，不阻塞主流程；队列满 DiscardPolicy 丢弃 |
+| GET 全量记，`sys_operation_log` 膨胀快 | level=3 独立保留 12 个月；定时清理 03:30；高频只读接口可在切面加 URI 前缀白名单跳过响应保存 |
+| 审计响应 `response_data` MEDIUMBLOB 拖慢列表 | 列表查询若慢，改用投影 VO 排除该字段（见 3.9 注） |
+| 两切面拦截同一写方法，事务/上下文冲突 | 两切面 pointcut 不同、落不同表、各自异步独立事务，无共享状态；UserContext 由最外层 Order(1) 统一 clear，内层只读不 clear |
+| 脱敏正则误伤 | `SensitiveDataUtil.mask` 失败返回原文，不阻断；可配 `sensitive-fields` 调整 |
+
+**回滚**：审计轨全部为新增文件，删除新增的切面/服务/控制器/实体即可完全回滚，业务日志轨零影响。
+
+---
+
+## 7. 与原"融合方案"的差异说明
+
+本次按用户要求改为**双轨物理隔离**，相比上一版"一张表两用"方案：
+
+| 项 | 旧融合方案 | 新双轨方案 |
+|---|---|---|
+| `OperationLogRecord` | 扩展审计字段 | **完全不动** |
+| `operation_log` 表 | 加列 + 加索引 | **不动** |
+| `OperationLogAspect` | 改双轨切点 | **不动**（保持 `@annotation` 触发） |
+| `LogService.buildLogRecord` | 补 level/type | **不动** |
+| 审计数据落点 | 复用 `operation_log`（level 区分） | 新表 `sys_operation_log` |
+| 审计触发 | 复用业务切面 | 新切面 `SysOperationLogAspect` 全量拦截 |
+| 隔离性 | 同表，靠 level 过滤 | 物理隔离，彻底互不污染 |
+
+**双轨优势**：业务日志轨零风险（不动任何现有代码），审计轨独立演进（可单独调优、单独清理、单独扩容），两轨职责清晰——业务日志看"做了什么"，审计日志看"调了什么"。