使用AOP思想实现日志的添加

//1、创建日志表syslog-------》创建日志的实体类---------》在web.xml中配置监听

     org.springframework.web.context.request.RequestContextListener

--------》书写LogAop组件，并封装到实体类中，保存到数据库

 

package com.hope.controller;

import com.hope.domain.SysLog;
import com.hope.service.ISysLogService;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.User;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.util.Date;

/**
 * @author newcityman
 * @date 2019/12/14 - 22:44
 */
@Component
@Aspect
public class LogAop {

 @Autowired
 private HttpServletRequest request;

 private Date visitTime; //开始时间
 private Class clazz; //访问的类
 private Method method; //访问的方法
 private Long executionTime; //访问时长

 @Autowired
 private ISysLogService sysLogService;

 //前置通知 主要获取开始时间，执行的是哪个类，哪个方法
 @Before("execution(* com.hope.controller.*.*(..))")
 public void doBefore(JoinPoint jp) throws Exception {
 visitTime = new Date(); //当前时间就是开始的时间
 clazz = jp.getTarget().getClass(); //具体访问的类
 String methodName = jp.getSignature().getName(); //获取的访问方法的名称
 Object[] args = jp.getArgs();

 //获取具体执行的方法的method对象
 if (args == null || args.length == 0) {
 method = clazz.getMethod(methodName);
 } else {
 Class[] classArgs = new Class[args.length];
 for (int i = 0; i < args.length; i++) {
 classArgs[i] = args[i].getClass();
 }
 method = clazz.getMethod(methodName, classArgs);
 }


 }

 @After("execution(* com.hope.controller.*.*(..))")
 public void doAfter(JoinPoint jp) throws Exception {
 executionTime = new Date().getTime() - visitTime.getTime(); //获取访问时长
 String url = "";
 //获取url
 if (clazz != null && method != null && clazz != LogAop.class) {
 //获取类上的@RequestMapping("/***")
 RequestMapping clazzAnnotation = (RequestMapping) clazz.getAnnotation(RequestMapping.class);
 if (clazzAnnotation != null) {
 String[] clazzValue = clazzAnnotation.value();
 //获取方法上@RequestMapping("/***")
 RequestMapping methodAnnotation = method.getAnnotation(RequestMapping.class);
 if (methodAnnotation != null) {
 String[] methodValue = methodAnnotation.value();
 url = clazzValue[0] + methodValue[0];
 }
 }
 }
 //获取访问的ip地址
 String ip = request.getRemoteAddr();

 //获取系统的当前操作者
 SecurityContext context = SecurityContextHolder.getContext();
 User user = (User) context.getAuthentication().getPrincipal();
 String username = user.getUsername();

 //将日志相关信息封装到SysLog对象
 SysLog sysLog = new SysLog();
 sysLog.setVisitTime(visitTime);
 sysLog.setUsername(username);
 sysLog.setIp(ip);
 sysLog.setUrl(url);
 sysLog.setExecutionTime(executionTime);
 sysLog.setMethod("[类名] " + clazz.getName() + " [方法名] " + method.getName());

 //调用SysLogSservice的方法
 sysLogService.save(sysLog);

 }

}