diff --git a/src/main/java/com/yunhai/notice/config/JacksonConfig.java b/src/main/java/com/yunhai/notice/config/JacksonConfig.java
new file mode 100644
index 0000000..e3c61bf
--- /dev/null
+++ b/src/main/java/com/yunhai/notice/config/JacksonConfig.java
@@ -0,0 +1,35 @@
+package com.yunhai.notice.config;
+
+import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
+
+import java.time.format.DateTimeFormatter;
+
+/**
+ * Jackson 时间序列化全局约定（对齐旧 .NET 版 "yyyy-MM-dd HH:mm:ss"）：
+ * 接口出入参中的 LocalDateTime/LocalDate 统一使用该格式，避免 ISO 的 "T" 分隔符
+ * （如 2026-09-01T16:38:40）直接暴露给前端表格。
+ */
+@Configuration
+public class JacksonConfig {
+
+    private static final DateTimeFormatter DATE_TIME = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
+    private static final DateTimeFormatter DATE = DateTimeFormatter.ofPattern("yyyy-MM-dd");
+
+    @Bean
+    public Jackson2ObjectMapperBuilderCustomizer jacksonCustomizer() {
+        return builder -> builder
+                .serializers(
+                        new LocalDateTimeSerializer(DATE_TIME),
+                        new LocalDateSerializer(DATE))
+                .deserializers(
+                        new LocalDateTimeDeserializer(DATE_TIME),
+                        new LocalDateDeserializer(DATE));
+    }
+}