refactor: 根包由 com.bestsch.bschclassmanage 重命名为 com.yunhai.bschclassmanage

- git mv src/main/java/com/bestsch/bschclassmanage -> src/main/java/com/yunhai/bschclassmanage
- 255 个 Java 文件的 package/import 同步替换为 com.yunhai.bschclassmanage
- pom.xml 项目 groupId 设为 com.yunhai（与外部依赖 com.bestsch:bsch-* 无关，未改动）
- IDE 缓存 workspace.xml 路径同步更新（外部依赖坐标 com.bestsch:bsch-* 保持不动）

src/main/java/com/yunhai/bschclassmanage/config/RedisConfig.java

@@ -0,0 +1,91 @@
+package com.yunhai.bschclassmanage.config;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.parser.ParserConfig;
+import com.alibaba.fastjson.support.spring.FastJsonRedisSerializer;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.data.redis.RedisProperties;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.cache.annotation.CachingConfigurerSupport;
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.cache.interceptor.KeyGenerator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.cache.RedisCacheConfiguration;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.core.RedisOperations;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+
+import java.time.Duration;
+
+/**
+ * @author min
+ * @description
+ * @date 2019-07-06
+ */
+@Slf4j
+@Configuration
+@EnableCaching
+// 自动配置
+@ConditionalOnClass(RedisOperations.class)
+@EnableConfigurationProperties(RedisProperties.class)
+public class RedisConfig extends CachingConfigurerSupport {
+
+    /**
+     *  设置 redis 数据默认过期时间，默认1天
+     *  设置@cacheable 序列化方式
+     * @return
+     */
+    @Bean
+    public RedisCacheConfiguration redisCacheConfiguration(){
+        FastJsonRedisSerializer<Object> fastJsonRedisSerializer = new FastJsonRedisSerializer<>(Object.class);
+        RedisCacheConfiguration configuration = RedisCacheConfiguration.defaultCacheConfig();
+        configuration = configuration.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(fastJsonRedisSerializer)).entryTtl(Duration.ofDays(1));
+        return configuration;
+    }
+
+    @Bean(name = "redisTemplate")
+    @ConditionalOnMissingBean(name = "redisTemplate")
+    public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
+        RedisTemplate<Object, Object> template = new RedisTemplate<>();
+
+        // 使用 FastJsonRedisSerializer（会自动存储 @type 字段）
+        FastJsonRedisSerializer<Object> fastJsonSerializer = new FastJsonRedisSerializer<>(Object.class);
+        // 允许反序列化 com.bestsch 包下的类（安全）
+        ParserConfig.getGlobalInstance().addAccept("com.bestsch");
+
+        template.setValueSerializer(fastJsonSerializer);
+        template.setHashValueSerializer(fastJsonSerializer);
+        // key 使用 String 序列化
+        template.setKeySerializer(new StringRedisSerializer());
+        template.setHashKeySerializer(new StringRedisSerializer());
+        template.setConnectionFactory(redisConnectionFactory);
+
+        log.info("RedisTemplate value serializer: {}", fastJsonSerializer.getClass());
+        return template;
+    }
+
+    /**
+     * 自定义缓存key生成策略
+     * 使用方法 @Cacheable(keyGenerator="keyGenerator")
+     * @return
+     */
+    @Bean
+    @Override
+    public KeyGenerator keyGenerator() {
+        return (target, method, params) -> {
+            StringBuilder sb = new StringBuilder();
+            sb.append(target.getClass().getName());
+            sb.append(method.getName());
+            for (Object obj : params) {
+                sb.append(JSON.toJSONString(obj).hashCode());
+            }
+            return sb.toString();
+        };
+    }
+}