基于Spring的AOP的日志处理

基于Spring的AOP的日志处理

数据库与表结构
日志表信息描述sysLog
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)
)


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;
｝


``

页面syslog-list.jsp


```Javascript


基于AOP日志处理
创建切面类处理日志

package com.itheima.ssm.controller;
import com.itheima.ssm.domain.SysLog;
import com.itheima.ssm.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;
@Component
@Aspect
public class LogAop {
@Autowired
private HttpServletRequest request;
@Autowired
private ISysLogService sysLogService;
private Date visitTime; //开始时间
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(* com.itheima.ssm.controller.*.*(..))")
public void doBefore(JoinPoint jp) throws NoSuchMethodException {
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 classArgs[i] = args[i].getClass();
}
clazz.getMethod(methodName, classArgs);
}
}
//后置通知
@After("execution(* com.itheima.ssm.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 通过反射
if (clazz != null && method != null && clazz != LogAop.class) {
//1.获取类上的@RequestMapping("/orders")
RequestMapping classAnnotation = (RequestMapping) clazz.getAnnotation(RequestMapping.class);
if (classAnnotation != null) {
String[] classValue = classAnnotation.value();
//2.获取方法上的@RequestMapping(xxx)
RequestMapping methodAnnotation = method.getAnnotation(RequestMapping.class);
if (methodAnnotation != null) {
String[] methodValue = methodAnnotation.value();
url = classValue[0] + methodValue[0];
//获取访问的ip
String ip = request.getRemoteAddr();
//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);
//注意这一类的写法
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);
}
}
}
}
}


在切面类中我们需要获取登录用户的username，还需要获取ip地址，我们怎么处理？
username获取 SecurityContextHolder获取 ip地址获取 ip地址的获取我们可以通过request.getRemoteAddr()方法获取到。
在Spring中可以通过RequestContextListener来获取request或session对象
查询日志的具体流程如下

SysLogController

mport com.itheima.ssm.domain.SysLog;
import com.itheima.ssm.service.ISysLogService;
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;
import java.util.List;
@Controller
@RequestMapping("/sysLog")
public class SysLogController {
@Autowired
private ISysLogService sysLogService;
@RequestMapping("/findAll.do")
public ModelAndView findAll() throws Exception {
ModelAndView mv=new ModelAndView();
List sysLogList= sysLogService.findAll();
mv.addObject("sysLogs",sysLogList);
mv.setViewName("syslog-list");
return mv;
}
}


SysLogServiceImpl

@Service
@Transactional
public class SysLogServiceImpl implements ISysLogService {
@Autowired
private ISysLogDao sysLogDao;
@Override
public List findAll() throws Exception {
return sysLogDao.findAll();
}
@Override
public void save(SysLog sysLog) throws Exception {
sysLogDao.save(sysLog);
}
}


ISysLogDao

mport com.itheima.ssm.domain.SysLog;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import java.util.List;
public interface ISysLogDao {
@Insert("insert into syslog(visitTime,username,ip,url,executionTime,method) values(#{visitTime},#{username},#{ip},#{url},#{executionTime},#{method})")
public void save(SysLog sysLog) throws Exception;
@Select("select * from sysLog")
List findAll() throws Exception;
}


最终呈现的查询结果界面为