数据后台管理(五)AOP日志

末鹿安然 提交于 2019-12-04 03:46:00

为了增加数据的安全性,在数据管理的过程中,我们需要将操作者访问时间,操作者的名称,访问的IP,访问资源的URL,执行时长,访问方法记录下来存储到数据库中,并可以通过页面查看。

1.将日志信息存储到数据库中

1.1根据需要记录的日志内容在数据库中创建表syslog和对应的实体类SysLog

日志表syslog

SysLog类

 SysLog

1.2在controller包下新建一个切面类LogAop来获取需要记录日志内容

注意该类作为切面类需要注解@Aspect

在该切面类内创建一个前置通知@Before("execution(* club.nipengfei.ssm.controller.*.*(..))"),一个后置通知@After("execution(* club.nipengfei.ssm.controller.*.*(..))"),注解内的属性表示切入点表达式,在这里表示controller包下的所有类。

1.2.1获取操作者的访问时间

直接在前置通知内new一个Date()

1.2.2获取操作者名称

1 // 获取当前操作的用户
2 SecurityContext context = SecurityContextHolder.getContext();
3 User user =(User) context.getAuthentication().getPrincipal();
4 String username = user.getUsername();

1.2.3获取访问IP

先在web.xml中新增一个监听器

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

通过getRemoteAddr()方法获取IP

1 // 获取IP地址
2 String ip = request.getRemoteAddr();

 1.2.4获取访问资源的URL

思路:获取类上注解的@RequestMapping的属性值和方法上注解@RequestMapping的属性值,并将两者拼接。

获取类上注解属性值:通过反射获取操作的类,使用getAnnotation(RequestMapping.class)方法获取@RequestMapping注解,使用value()获取属性

获取方法上注解属性值:通过反射获取操作的类,使用getMethod()方法获取方法,使用getAnnotation(RequestMapping.class)方法获取@RequestMapping注解,使用value()获取属性

具体代码放下面。

1.2.5获取执行时长

在后置通知内new一个Date()减去前置通知的Date()。

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

1.2.6获取访问方法

通过类的getMethod()方法获取方法。

注意:有些方法含参,有些不含参需要分开处理。

复制代码
 1     @Before("execution(* club.nipengfei.ssm.controller.*.*(..))")
 2     public void doBefore(JoinPoint jp) throws NoSuchMethodException {
 3         visitTime = new Date();  // 当前时间就是开始访问的类
 4         clazz = jp.getTarget().getClass(); // 具体访问的类
 5         String methodName = jp.getSignature().getName();  // 获取访问方法名称
 6         Object[] args = jp.getArgs();  // 获取访问方法参数
 7 
 8         // 获取具体执行方法Method对象
 9         if (args==null || args.length==0){
10             method =  clazz.getMethod(methodName);
11         } else {
12             Class[] classArgs = new Class[args.length];
13             for (int i=0;i<args.length;i++){
14                 classArgs[i] = args[i].getClass();
15             }
16             method = clazz.getMethod(methodName,classArgs);
17         }
18     }
复制代码

 LogAop类的代码:

复制代码
 1 package club.nipengfei.ssm.controller;
 2 
 3 import club.nipengfei.ssm.domain.SysLog;
 4 import club.nipengfei.ssm.service.ISysLogService;
 5 import org.aspectj.lang.JoinPoint;
 6 import org.aspectj.lang.annotation.After;
 7 import org.aspectj.lang.annotation.Aspect;
 8 import org.aspectj.lang.annotation.Before;
 9 import org.springframework.beans.factory.annotation.Autowired;
10 import org.springframework.security.core.context.SecurityContext;
11 import org.springframework.security.core.context.SecurityContextHolder;
12 import org.springframework.security.core.userdetails.User;
13 import org.springframework.stereotype.Component;
14 import org.springframework.web.bind.annotation.RequestMapping;
15 
16 import javax.servlet.http.HttpServletRequest;
17 import java.lang.reflect.Method;
18 import java.util.Date;
19 
20 @Component
21 @Aspect
22 public class LogAop {
23 
24     @Autowired
25     private HttpServletRequest request;
26 
27     @Autowired
28     private ISysLogService sysLogService;
29 
30     private Date visitTime; // 开始时间
31     private Class clazz;  // 访问的类
32     private Method method; // 访问的方法
33 
34     // 前置通知 主要获取开始时间,执行的类哪一个,执行的哪一个方法
35     @Before("execution(* club.nipengfei.ssm.controller.*.*(..))")
36     public void doBefore(JoinPoint jp) throws NoSuchMethodException {
37         visitTime = new Date();  // 当前时间就是开始访问的类
38         clazz = jp.getTarget().getClass(); // 具体访问的类
39         String methodName = jp.getSignature().getName();  // 获取访问方法名称
40         Object[] args = jp.getArgs();  // 获取访问方法参数
41 
42         // 获取具体执行方法Method对象
43         if (args==null || args.length==0){
44             method =  clazz.getMethod(methodName);
45         } else {
46             Class[] classArgs = new Class[args.length];
47             for (int i=0;i<args.length;i++){
48                 classArgs[i] = args[i].getClass();
49             }
50             method = clazz.getMethod(methodName,classArgs);
51         }
52     }
53 
54     // 后置通知
55     @After("execution(* club.nipengfei.ssm.controller.*.*(..))")
56     public void doAfter(JoinPoint jp) throws Exception {
57 
58         // 获取访问时长
59         long time = new Date().getTime()-visitTime.getTime();
60 
61         String url = "";
62         // 获取url
63         if (clazz != null && method !=null && clazz!=LogAop.class){
64             // 获取类的@RequestMapping("/orders")
65             RequestMapping clazzAnnotation =(RequestMapping) clazz.getAnnotation(RequestMapping.class);
66             if (clazzAnnotation != null){
67                 String[] classValue = clazzAnnotation.value();
68                 // 获取方法上的@RequestMapping("xxx")
69                 RequestMapping methodAnnotation = method.getAnnotation(RequestMapping.class);
70                 if (methodAnnotation != null){
71                     String[] methodValue = methodAnnotation.value();
72                     url=classValue[0]+methodValue[0];
73 
74                     // 获取IP地址
75                     String ip = request.getRemoteAddr();
76 
77                     // 获取当前操作的用户
78                     SecurityContext context = SecurityContextHolder.getContext();
79                     User user =(User) context.getAuthentication().getPrincipal();
80                     String username = user.getUsername();
81 
82                     // 将日志相关信息封装到SysLog对象
83                     SysLog sysLog = new SysLog();
84                     sysLog.setExecutionTime(time);
85                     sysLog.setIp(ip);
86                     sysLog.setMethod("[类名] "+clazz.getName()+"[方法名] "+method.getName());
87                     sysLog.setUrl(url);
88                     sysLog.setUsername(username);
89                     sysLog.setVisitTime(visitTime);
90 
91                     // 调用service完成操作
92                     sysLogService.save(sysLog);
93                 }
94             }
95 
96         }
97     }
98 }
复制代码

1.3在service.impl包下新建一个SysLogServiceImpl类,生成一个save方法将SysLog类对象放到数据表中

复制代码
 1 package club.nipengfei.ssm.service.impl;
 2 
 3 import club.nipengfei.ssm.dao.ISysLogDao;
 4 import club.nipengfei.ssm.domain.SysLog;
 5 import club.nipengfei.ssm.service.ISysLogService;
 6 import org.springframework.beans.factory.annotation.Autowired;
 7 import org.springframework.stereotype.Service;
 8 import org.springframework.transaction.annotation.Transactional;
 9 
10 import java.util.List;
11 
12 @Service
13 @Transactional
14 public class SysLogServiceImpl implements ISysLogService {
15 
16     @Autowired
17     private ISysLogDao sysLogDao;
18 
19     @Override
20     public void save(SysLog sysLog) throws Exception {
21         sysLogDao.save(sysLog);
22     }
23 
24 }
复制代码

1.4在dao包下新建ISysLogDao接口

复制代码
 1 package club.nipengfei.ssm.dao;
 2 
 3 import club.nipengfei.ssm.domain.SysLog;
 4 import org.apache.ibatis.annotations.Insert;
 5 import org.apache.ibatis.annotations.Select;
 6 
 7 import java.util.List;
 8 
 9 public interface ISysLogDao {
10 
11     @Insert("insert into syslog(visitTime,username,ip,url,executionTime,method) values(#{visitTime},#{username},#{ip},#{url},#{executionTime},#{method})")
12     public void save(SysLog sysLog) throws Exception;
13 
14 }
复制代码

1.5存在的问题

当点击订单管理时发现,不能正常访问

查看资料发现因为该findAll方法传入的形参是int类型,而我们的切面类通过反射获取该类的方法时传入的参数Integer类型。将findAll方法的int改为Integer,发现能正常访问了。

2.将日志信息展示到页面上

流程分析图:

 

2.1在ISysLogDao接口中生成一个findAll方法

复制代码
 1 package club.nipengfei.ssm.dao;
 2 
 3 import club.nipengfei.ssm.domain.SysLog;
 4 import org.apache.ibatis.annotations.Insert;
 5 import org.apache.ibatis.annotations.Select;
 6 
 7 import java.util.List;
 8 
 9 public interface ISysLogDao {
10 
11     @Insert("insert into syslog(visitTime,username,ip,url,executionTime,method) values(#{visitTime},#{username},#{ip},#{url},#{executionTime},#{method})")
12     public void save(SysLog sysLog) throws Exception;
13 
14     @Select("select * from sysLog")
15     List<SysLog> findAll() throws Exception;
16 }
复制代码

2.2在SysLogServiceImpl类内调用上面方法

复制代码
 1 package club.nipengfei.ssm.service.impl;
 2 
 3 import club.nipengfei.ssm.dao.ISysLogDao;
 4 import club.nipengfei.ssm.domain.SysLog;
 5 import club.nipengfei.ssm.service.ISysLogService;
 6 import org.springframework.beans.factory.annotation.Autowired;
 7 import org.springframework.stereotype.Service;
 8 import org.springframework.transaction.annotation.Transactional;
 9 
10 import java.util.List;
11 
12 @Service
13 @Transactional
14 public class SysLogServiceImpl implements ISysLogService {
15 
16     @Autowired
17     private ISysLogDao sysLogDao;
18 
19     @Override
20     public void save(SysLog sysLog) throws Exception {
21         sysLogDao.save(sysLog);
22     }
23 
24     @Override
25     public List<SysLog> findAll() throws Exception {
26         return sysLogDao.findAll();
27     }
28 }
复制代码

2.3在controller包下新建一个SysLogController类

复制代码
 1 package club.nipengfei.ssm.controller;
 2 
 3 import club.nipengfei.ssm.domain.SysLog;
 4 import club.nipengfei.ssm.service.ISysLogService;
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.stereotype.Controller;
 7 import org.springframework.web.bind.annotation.RequestMapping;
 8 import org.springframework.web.servlet.ModelAndView;
 9 
10 import java.util.List;
11 
12 @Controller
13 @RequestMapping("/sysLog")
14 public class SysLogController {
15 
16     @Autowired
17     private ISysLogService sysLogService;
18 
19     @RequestMapping("/findAll.do")
20     public ModelAndView findAll() throws Exception {
21         ModelAndView mv = new ModelAndView();
22         List<SysLog> sysLogList = sysLogService.findAll();
23         mv.addObject("sysLogs",sysLogList);
24         mv.setViewName("syslog-list");
25         return mv;
26     }
27 }
复制代码

 

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