033 SSM综合练习09--数据后台管理系统--基于AOP的日志处理

1.数据库与表结构

(1)日志表信息描述sysLog

(2)Sql语句

CREATE TABLE sysLog (
    id VARCHAR2 ( 32 ) DEFAULT SYS_GUID () PRIMARY KEY,
    visitTime timestamp,
    username VARCHAR2 ( 50 ),
    ip VARCHAR2 ( 30 ),
    url VARCHAR2 ( 50 ),
    executionTime int,
method VARCHAR2 ( 200 )
)

(3)实体类

package lucky.domain;

import java.util.Date;

/**
 * 系统日志实体类
 */
public class SysLog {

    private String id;
    private Date visitTime;
    private String visitTimeStr;
    private String username;
    private String ip;
    private String url;
    private Long executionTime;
    private String method;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public Date getVisitTime() {
        return visitTime;
    }

    public void setVisitTime(Date visitTime) {
        this.visitTime = visitTime;
    }

    public String getVisitTimeStr() {
        return visitTimeStr;
    }

    public void setVisitTimeStr(String visitTimeStr) {
        this.visitTimeStr = visitTimeStr;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public Long getExecutionTime() {
        return executionTime;
    }

    public void setExecutionTime(Long executionTime) {
        this.executionTime = executionTime;
    }

    public String getMethod() {
        return method;
    }

    public void setMethod(String method) {
        this.method = method;
    }
}

2.AOP日志思路分析图

3.代码部分

(1)aop配置

在springmvc.xml文件中添加如下内容：

<!--
       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"/>

(2)AopLog.java(最重要)

package lucky.controller;

import lucky.domain.SysLog;
import lucky.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;

/**
 * AOP日志
 * 注意：获取url时，classAnnotation.path()还是classAnnotation.value()一定要和controller上的注解相一致，否则会报错
 * 可以打上断点看看
 */
@Component
@Aspect
public class LogAop {

    @Autowired
    private HttpServletRequest request;

    @Autowired
    private ISysLogService sysLogService;

    private Date visitTime; //访问时间
    private Class clazz; //访问的类
    private Method method;//访问的方法

    /**
     * 前置通知，主要是获取开始时间，执行的类是哪一个，执行的是哪一个方法
     */
    @Before("execution(* lucky.controller.*.*(..))")
    public void doBefore(JoinPoint jp) throws Exception {
        visitTime = new Date();//当前时间就是开始访问的时间
        clazz = jp.getTarget().getClass(); //具体要访问的类
        String methodName = jp.getSignature().getName(); //获取访问的方法的名称
        Object[] args = jp.getArgs();//获取访问的方法的参数

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

    /**
     * 后置通知
     */
    @After("execution(* lucky.controller.*.*(..))")
    public void doAfter(JoinPoint jp) throws Exception{
        long time = new Date().getTime() - visitTime.getTime(); //获取访问的时长

        String url = "";
        //获取url
        if (clazz != null && method != null && clazz != LogAop.class) {
            //1.获取类上的@RequestMapping("/orders")
            RequestMapping classAnnotation = (RequestMapping) clazz.getAnnotation(RequestMapping.class);
            //String[] classValue = classAnnotation.value();
            if (classAnnotation != null) {
                String[] classValue = classAnnotation.path();
                //2.获取方法上的@RequestMapping(xxx)
                RequestMapping methodAnnotation = method.getAnnotation(RequestMapping.class);
                if (methodAnnotation != null) {
                    String[] methodValue = methodAnnotation.path();
                    url = classValue[0] + methodValue[0];

                    //获取访问的ip
                    String ip = request.getRemoteAddr();

                    //利用springSecurity获取当前操作的用户
                    SecurityContext context = SecurityContextHolder.getContext();//从上下文中获了当前登录的用户
                    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.setExecutionTime(time); //执行时长
                    sysLog.setIp(ip);
                    sysLog.setMethod("[类名] " + clazz.getName() + "[方法名] " + method.getName());
                    sysLog.setUrl(url);
                    sysLog.setUsername(username);
                    sysLog.setVisitTime(visitTime);

                    //调用Service完成操作
                    sysLogService.save(sysLog);
                }
            }
        }

    }
}

(3)service层代码

接口

package lucky.service;

import lucky.domain.SysLog;

import java.util.List;

public interface ISysLogService{
    void save(SysLog sysLog);

    List<SysLog> queryAll();
}

实现类

package lucky.service.impl;

import lucky.dao.ISysLogDao;
import lucky.domain.SysLog;
import lucky.service.ISysLogService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class SysLogServiceImpl implements ISysLogService {
    @Autowired
    private ISysLogDao iSysLogDao;

    @Override
    public void save(SysLog sysLog) {
        iSysLogDao.save(sysLog);
    }

    @Override
    public List<SysLog> queryAll() {
        return iSysLogDao.queryAll();
    }
}

(5)持久层

package lucky.dao;

import lucky.domain.SysLog;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface ISysLogDao {

    @Select("insert into LUCKY.SYSLOG(visitTime,username,ip,url,executionTime,method) values(#{visitTime},#{username},#{ip},#{url},#{executionTime},#{method})")
    public void save(SysLog sysLog);

    @Select("select * from LUCKY.SYSLOG")
    List<SysLog> queryAll();
}

4.效果图