日志

src/main/java/com/guwan/backend/mapper/SysLogMapper.java

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+package com.guwan.backend.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.guwan.backend.entity.SysLog;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Mapper
+public interface SysLogMapper extends BaseMapper<SysLog> {
+    
+    /**
+     * 分页查询日志
+     */
+    @Select("SELECT * FROM sys_log WHERE user_id = #{userId} ORDER BY create_time DESC")
+    IPage<SysLog> selectPageByUserId(Page<SysLog> page, @Param("userId") Long userId);
+    
+    /**
+     * 查询指定时间范围内的日志
+     */
+    @Select("SELECT * FROM sys_log WHERE create_time BETWEEN #{startTime} AND #{endTime}")
+    List<SysLog> selectByTimeRange(@Param("startTime") LocalDateTime startTime, 
+                                  @Param("endTime") LocalDateTime endTime);
+    
+    /**
+     * 查询用户的操作统计
+     */
+    @Select("SELECT operation, COUNT(*) as count FROM sys_log " +
+            "WHERE user_id = #{userId} GROUP BY operation")
+    List<OperationCount> selectUserOperationCount(@Param("userId") Long userId);
+    
+    /**
+     * 查询错误日志
+     */
+    @Select("SELECT * FROM sys_log WHERE status = 0 ORDER BY create_time DESC LIMIT #{limit}")
+    List<SysLog> selectLatestErrors(@Param("limit") Integer limit);
+} 

src/main/resources/mapper/SysLogMapper.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.guwan.backend.mapper.SysLogMapper">
+    
+    <!-- 复杂条件查询 -->
+    <select id="selectByCondition" resultType="com.guwan.backend.entity.SysLog">
+        SELECT * FROM sys_log
+        <where>
+            <if test="userId != null">
+                AND user_id = #{userId}
+            </if>
+            <if test="operation != null and operation != ''">
+                AND operation = #{operation}
+            </if>
+            <if test="status != null">
+                AND status = #{status}
+            </if>
+            <if test="startTime != null">
+                AND create_time >= #{startTime}
+            </if>
+            <if test="endTime != null">
+                AND create_time &lt;= #{endTime}
+            </if>
+        </where>
+        ORDER BY create_time DESC
+    </select>
+    
+    <!-- 统计分析查询 -->
+    <select id="selectStatistics" resultType="java.util.Map">
+        SELECT 
+            COUNT(*) as total,
+            SUM(CASE WHEN status = 1 THEN 1 ELSE 0 END) as success,
+            SUM(CASE WHEN status = 0 THEN 1 ELSE 0 END) as fail,
+            AVG(time_consuming) as avgTime
+        FROM sys_log
+        WHERE create_time BETWEEN #{startTime} AND #{endTime}
+        <if test="userId != null">
+            AND user_id = #{userId}
+        </if>
+    </select>
+    
+</mapper>