AOP记录返回值

package com.woniuxy.stuLog;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.woniuxy.entity.Student;
import com.woniuxy.entity.StudentLog;
import com.woniuxy.mapper.ClassesMapper;
import com.woniuxy.mapper.GradeMapper;
import com.woniuxy.mapper.StudentMapper;
import com.woniuxy.service.IStudentLogService;
import com.woniuxy.util.IpUtil;
import org.apache.shiro.SecurityUtils;
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 java.lang.reflect.Method;
import java.lang.reflect.Parameter;
import java.net.SocketException;
import java.util.Date;

@Aspect
@Component
public class SysLogAspect {

@Autowired<br />    private IStudentLogService studentLogService;<br />    @Autowired<br />    private StudentMapper studentMapper;<br />    @Autowired<br />    private ClassesMapper classesMapper;<br />    @Autowired<br />    private GradeMapper gradeMapper;
//定义切点,切点表达式指向sysLog注解,在业务方法上标上注解,<br />    //所标注的方法都可以进行记录<br />    @Pointcut("@annotation(com.woniuxy.stuLog.SysLog)")<br />    public void logPointCut(){
}
@Around("logPointCut()")<br />    public Object around(ProceedingJoinPoint pjt)  {
    //获取方法签名<br />        MethodSignature methodSignature = (MethodSignature) pjt.getSignature();<br />        //获取方法<br />        Method method = methodSignature.getMethod();<br />        //获取方法上的注解<br />        SysLog sysLog = method.getAnnotation(SysLog.class);<br />        //获取操作上描述的属性值<br />        String value = sysLog.value();<br />        //获取参数名称<br />        String[] parameterNames = methodSignature.getParameterNames();<br />        //获取参数值<br />        Object[] args = pjt.getArgs();<br />        // method获取参数信息<br />        Parameter[] parameters = method.getParameters();
    //准备记录日志信息<br />        StudentLog logRecord=new StudentLog();<br />        //操作说明<br />        logRecord.setOperationInfo(value);<br />        //得到登录人<br />        Student user = (Student) SecurityUtils._getSubject_().getPrincipal();
    logRecord.setStudentName(user.getStudentName());
    String studentName = user.getStudentName();
    QueryWrapper<Student> wrapper=new QueryWrapper<>();<br />        wrapper.eq("student_name", studentName);<br />        Student student = studentMapper.selectOne(wrapper);
    Integer classId = student.getClassId();<br />        String className = classesMapper.selectById(classId).getClassName();<br />        logRecord.setClassName(className);
    Integer gradeId = classesMapper.selectById(classId).getGradeId();<br />        String gradeName = gradeMapper.selectById(gradeId).getGradeName();
    logRecord.setGradeName(gradeName);
    Object proceed=null;<br />        try {<br />            //执行代理方法<br />            proceed = pjt.proceed();<br />        } catch (Throwable e) {<br />            e.printStackTrace();<br />        }<br />        //设置操作日期<br />        logRecord.setCreateTime(new Date());<br />        //得到IP地址<br />        try {<br />            logRecord.setIpAddress(IpUtil._getLocalIp4Address_().toString());<br />        } catch (SocketException e) {<br />            e.printStackTrace();<br />        }<br />        //加入数据库<br />        studentLogService.save(logRecord);
    return proceed;
}

}

获取返回值的写法：

@Configuration
@Aspect
public class UserInfoAspect {
@Pointcut(“execution( com..test(*))”)
public void test() {}

//在事件通知类型中申明returning即可获取返回值
@AfterReturning(value = “test()”, returning=”returnValue”)
public void logMethodCall(JoinPoint jp, Object returnValue) throws Throwable {
System.out.println(“进入后置增强了！”);
String name = jp.getSignature().getName();
System.out.println(name);
Object[] args = jp.getArgs();
for (Object arg : args) {
System.out.println(“参数：” + arg);
}
System.out.println(“方法返回值为：” + returnValue);
}
}
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版权声明：本文为CSDN博主「诗人与黑客」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/qq_41899174/article/details/90732058