AOP抽取日志

数据库日志信息表

配置文件

在web.xml下配置监听器，用于获取Request，便于得到访问ip

  <listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
  </listener>

由于该例子中抽取的是Controller中的方法，需要修改springmvc配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="
           http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd
           http://www.springframework.org/schema/mvc
           http://www.springframework.org/schema/mvc/spring-mvc.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context.xsd
           http://www.springframework.org/schema/aop
		http://www.springframework.org/schema/aop/spring-aop.xsd
           ">

    <!-- 扫描controller的注解，别的不扫描 -->
    <context:component-scan base-package="com.itheima.ssm.controller">
    </context:component-scan>

    <!-- 配置视图解析器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- JSP文件所在的目录 -->
        <property name="prefix" value="/pages/" />
        <!-- 文件的后缀名 -->
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 设置静态资源不过滤 -->
    <mvc:resources location="/css/" mapping="/css/**" />
    <mvc:resources location="/img/" mapping="/img/**" />
    <mvc:resources location="/js/" mapping="/js/**" />
    <mvc:resources location="/plugins/" mapping="/plugins/**" />

    <!-- 开启对SpringMVC注解的支持 -->
    <mvc:annotation-driven />

    <!--
        支持AOP的注解支持，AOP底层使用代理技术
        JDK动态代理，要求必须有接口
        cglib代理，生成子类对象，proxy-target-class="true" 默认使用cglib的方式
    -->
    <aop:aspectj-autoproxy proxy-target-class="true"/>

</beans>

AOP代码

package com.czy.productAdmin.controller;

import com.czy.productAdmin.domain.SysLog;
import com.czy.productAdmin.service.SysLogService;
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.aspectj.lang.annotation.Pointcut;
import org.springframework.beans.factory.annotation.Autowired;
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.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.Date;
import java.util.UUID;

@Component
@Aspect
public class LogAop {

    @Autowired
    private SysLogService sysLogService;

    @Autowired
    private HttpServletRequest request; // 配置完监听器后即可注入

    private Date visitTime; // 开始时间
    private Class executionClass; // 访问的类
    private Method executionMethod; // 访问的方法

    //切面
    @Pointcut("execution(* com.czy.productAdmin.controller.*.*(..))")
    public void ppt() {}

    //前置通知:主要是获取开始时间，执行的类是哪一个，访问哪一个方法
    @Before("ppt()")
    public void doBefore(JoinPoint jp) throws NoSuchMethodException {
        visitTime = new Date();  // 当前时间即开始访问的时间
        executionClass = jp.getTarget().getClass(); // 具体访问的类对象
        String methodName = jp.getSignature().getName(); // 获取调用方法的名字
        Object[] args = jp.getArgs();

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

    //后置通知
    @After("ppt()")
    public void doAfter(JoinPoint jp) throws Exception {
        if(executionClass == SysLogController.class) return;

        // 获取访问时长
        long executionTime = new Date().getTime() - visitTime.getTime();

        // 获取访问的url
        String url = "";
        if(executionClass != null && executionMethod != null && LogAop.class != executionClass) {
            RequestMapping classAnnotation = (RequestMapping) executionClass.getAnnotation(RequestMapping.class);
            if(classAnnotation != null) {
                String[] classValue = classAnnotation.value();
                RequestMapping methodAnnotation = (RequestMapping) executionMethod.getAnnotation(RequestMapping.class);
                if(methodAnnotation != null) {
                    String[] methodValue = methodAnnotation.value();
                    url = classValue[0] + methodValue[0];
                    // 获取访问的ip地址
                    String ip = request.getRemoteAddr();

                    // 获取操作者
                    User user = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
                    String username = user.getUsername();

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

                    // 调用service存储信息
                    sysLogService.save(sysLog);
                }
            }
        }


    }
}

Dao代码

package com.czy.productAdmin.dao;

import com.czy.productAdmin.domain.SysLog;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface SysLogDao {
    @Insert("insert into sysLog values(#{id}, #{visitTime}, #{username}, #{ip}, #{url}, #{executionTime}, #{method})")
    public void save(SysLog sysLog) throws Exception;

    @Select("select * from sysLog")
    public List<SysLog> findAll() throws Exception;
}

Service代码

package com.czy.productAdmin.service.impl;

import com.czy.productAdmin.dao.SysLogDao;
import com.czy.productAdmin.domain.SysLog;
import com.czy.productAdmin.service.SysLogService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class SysLogServiceImpl implements SysLogService {

    @Autowired
    private SysLogDao sysLogDao;

    @Override
    public void save(SysLog sysLog) throws Exception {
        sysLogDao.save(sysLog);
    }

    @Override
    public List<SysLog> findAll() throws Exception {
        return sysLogDao.findAll();
    }
}

controller代码

package com.czy.productAdmin.controller;

import com.czy.productAdmin.service.SysLogService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
@RequestMapping("/sysLog")
public class SysLogController {
    @Autowired
    private SysLogService sysLogService;

    @RequestMapping("/findAll.do")
    public ModelAndView findAll() throws Exception {
        ModelAndView mv = new ModelAndView();
        mv.setViewName("syslog-list");
        mv.addObject("sysLogs", sysLogService.findAll());
        return mv;
    }
}