springboot日志切面

1.自定义注解

package com.itheima.anno;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(RetentionPolicy.RUNTIME)//保留在运行阶段
@Target(ElementType.METHOD)//注解只能加在方法上
public @interface LogAnno {
    String methodDesc() default "";//方法用途
}

2.实体类

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.time.LocalDateTime;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class OperateLog {
    private Integer id; //ID
    private String className; //操作类名
    private String methodName; //操作方法名
    private String methodDesc; //方法用途
    private String methodParams; //操作方法参数
    private String returnValue; //操作方法返回值
    private Integer operateUser; //操作人ID
    private LocalDateTime operateTime; //操作时间
    private Long costTime; //操作耗时
}

3.mapper接口

@Mapper
public interface OperateLogMapper {

    //插入日志数据
    @Insert("insert into operate_log (operate_user, operate_time, class_name, method_name,method_desc, method_params, return_value, cost_time) " +
            "values (#{operateUser}, #{operateTime}, #{className}, #{methodName},#{methodDesc}, #{methodParams}, #{returnValue}, #{costTime});")
    public void insert(OperateLog log);

}

4.控制层

package com.itheima.controller;

import com.itheima.anno.LogAnno;

@RestController
public class EmpController {
    @Autowired
    private EmpService empService;

    @GetMapping("/emps/{id}")
    @LogAnno(methodDesc = "查询员工")
    public Result findById(@PathVariable("id") Integer id){
        Emp emp = empService.findById(id);
        return Result.success(emp);
    }

    @PutMapping("/emps")
    @LogAnno(methodDesc = "更新员工")
    public Result update(@RequestBody Emp emp){
        emp.setCreateTime(LocalDateTime.now());
        //emp.setUpdateTime(LocalDateTime.now());
        empService.update(emp);
        return Result.success();
    }
}  

5.切面类

package com.itheima.aspect;

import com.itheima.anno.LogAnno;
import com.itheima.domain.OperateLog;
import com.itheima.mapper.OperateLogMapper;
import com.itheima.util.JwtUtils;
import io.jsonwebtoken.Claims;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;
import java.util.Arrays;

//记录日志的切面
@Aspect
@Component
public class LogAspect {

    @Autowired
    private HttpServletRequest request;

    @Autowired
    private OperateLogMapper operateLogMapper;

    //切点(标注)
    @Pointcut("@annotation(com.itheima.anno.LogAnno)")
    public void pt(){}

    @Around("pt()")
    public Object around(ProceedingJoinPoint pjp) throws Throwable {
        OperateLog operateLog = new OperateLog();
        //获取类名
        operateLog.setClassName(pjp.getTarget().getClass().getName());
        //获取方法参数
        operateLog.setMethodParams(Arrays.toString(pjp.getArgs()));

        MethodSignature ms = (MethodSignature) pjp.getSignature();
        //获取方法名
        operateLog.setMethodName(ms.getMethod().getName());//方法名

        LogAnno logAnno = ms.getMethod().getAnnotation(LogAnno.class);
        //获取方法描述
        operateLog.setMethodDesc(logAnno.methodDesc());

        String token = request.getHeader("token");
        Claims claims = JwtUtils.parseJWT(token);
        //拿到用户id
        Integer id = claims.get("id", Integer.class);
        operateLog.setOperateUser(id);

        //操作时间
        operateLog.setOperateTime(LocalDateTime.now());

        long start = System.currentTimeMillis();

        Object object = pjp.proceed();
        long end = System.currentTimeMillis();

        //方法执行时间
        operateLog.setCostTime(end-start);

        //方法返回信息
        operateLog.setReturnValue(object.toString());

        //落库
        operateLogMapper.insert(operateLog);
        return object;
    }
}