SSM日志的实现

短命女 2023-10-13 11:26 38阅读 0赞

#### 1.导入依赖 ####

<dependency>
          <groupId>org.aspectj</groupId>
          <artifactId>aspectjweaver</artifactId>
          <version>1.9.19</version>
        </dependency>
    
         
        <dependency>
          <groupId>org.springframework.security</groupId>
          <artifactId>spring-security-core</artifactId>
          <version>5.6.9</version>
        </dependency>

#### 2.创建数据库表，实体类用来保存日志 ####

实体类

package com.xs.entity;
    import lombok.Data;
    import java.util.Date;
    
    /**
     * @Author 杨 
     * @CreateDate 2023-06-24 16:06
     **/
    @Data
    public class SysLog {
        private int id;
        private Date visitTime;
        private String username;
        private String ip;
        private String url;
        private Integer executionTime;
        private String method;
    
    }

数据库

![f11df7bf5c0c41128f1d5c4f90d0525f.png][]

#### 3.编写工具类来监控日志，并保存到数据库表中 ####

package com.xs.log;
    
    import com.xs.entity.SysLog;
    import com.xs.entity.User;
    import com.xs.service.SysLogService;
    import org.aspectj.lang.JoinPoint;
    import org.aspectj.lang.annotation.AfterReturning;
    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.stereotype.Component;
    import org.springframework.ui.Model;
    import org.springframework.validation.support.BindingAwareModelMap;
    import org.springframework.web.bind.annotation.RequestMapping;
    import javax.servlet.http.HttpServletRequest;
    import java.lang.reflect.Method;
    import java.util.Date;
    
    
    //import org.springframework.security.core.userdetails.User;
    /**
     * @Author 杨 
     * @CreateDate 2023-06-24 15:56
     **/
    @Component
    @Aspect
    public class LogAop {
        //注入request
        @Autowired
        private HttpServletRequest request;
    
        //注入service
        @Autowired
        private SysLogService sysLogService;
    
        private Date visitTime;  //访问时间
        private Class clazz;  //访问的类
        private Method method; //访问的方法
    
    
        /*
        //配置切入点
        @Pointcut("execution(* com.itheima.ssm.controller.*.*(..))")
        public void pt() {
    
        }*/
    
        //前置通知
        @Before("execution(public *  com.xs.controller.*.*(..))")
        public void doBefore(JoinPoint joinPoint) throws NoSuchMethodException {
            visitTime = new Date ();  //获取访问时间
            clazz = joinPoint.getTarget ().getClass ();  //获取访问的类
            String methodName = joinPoint.getSignature ().getName ();  //获取访问的方法的名称
            //获取方法参数
            Object[] args = joinPoint.getArgs ();
            //通过反射获取Method
            if (args == null || args.length == 0) {
                method = clazz.getMethod (methodName); //只能获取无参的方法
            } else {
                Class[] classes = new Class[args.length];
                for (int i = 0; i < args.length; i++) {
                    //Model 类型的参数注入的是BindingAwareModelMap类，这个类是Model接口实现类的ExtendedModelMap类的子类
                    if(args[i] instanceof BindingAwareModelMap){
                        //将子类BindingAwareModelMap强转为父类ExtendedModelMap，这个类是Model接口的实现类  clazz.getMethod (methodName, classes); 就不会出现类型转换异常
                        classes[i] = Model.class;
                        continue;
                    }
                    classes[i] = args[i].getClass ();
                }
                method = clazz.getMethod (methodName, classes);
            }
        }
    
        //后置通知   主要获取日志中其它信息，时长、ip、url...
        @AfterReturning("execution(public *  com.xs.controller.*.*(..))")
        public void doAfter() {
            //获取url -->  /orders/findAll.do
            String url = "";
            if (clazz != null && method != null && clazz != LogAop.class) {
                //1.获取类上 @RequestMapping("/product") 注解中的value值
                RequestMapping clazzAnnotation = (RequestMapping) clazz.getAnnotation (RequestMapping.class);
                if (clazzAnnotation != null) {
                    String[] classValue = clazzAnnotation.value ();
                    //2.获取方法上 @RequestMapping("/findAll.do") 注解中的value值
                    RequestMapping methodAnnotation = method.getAnnotation (RequestMapping.class);
                    if (methodAnnotation != null) {
                        String[] methodValue = methodAnnotation.value ();
                        //3.获取URL
                        if (classValue[0] != null && methodValue[0] != null) {
                            url = classValue[0] + methodValue[0];
                        }
    
    //                    String uri = request.getRequestURI ();
    
                        //获取执行时间
                        Long executionTime = new Date ().getTime () - visitTime.getTime ();
    
                        //获取ip  需要request获取 --》 获取request需要在web.xml中配置Listener  RequestContextListener类 在注入HttpServletRequest
                        String ip = request.getRemoteAddr ();
    
                        //获取操作者用户名(两种方式)  1.从上下文中获取登录的对象   2.也可以从request.getSession中获取
                        SecurityContext context = SecurityContextHolder.getContext ();
                        //SecurityContext context = (SecurityContext) request.getSession ().getAttribute ("SPRING_SECURITY_CONTEXT");
                        //Object principal = context.getAuthentication ().getPrincipal ();
                        User principal = (User)request.getSession ().getAttribute("user111");
                        String username = "";
                        if (principal != null){
                            username=principal.getUname();
                        }else {
                            username = "还没登录";
                        }
                        /*if(principal instanceof User){
                            User user = (User) context.getAuthentication ().getPrincipal ();
                            //User user = (User) request.getSession ().getAttribute("users");;
                            username = user.getUname();
                        }else {
                            username = "还没登录";
                        }*/
    
    
                        //封装日志类 SysLog
                        SysLog sysLog = new SysLog ();
                        sysLog.setVisitTime (visitTime);
                        sysLog.setExecutionTime (Math.toIntExact(executionTime));
                        sysLog.setIp (ip);
                        sysLog.setUrl (url);
                        sysLog.setUsername (username);
                        sysLog.setMethod ("[类名]" + clazz.getName() + "[方法名]" + method.getName());
    
                        //调用service
                        sysLogService.save(sysLog);
                    }
    
                }
    
            }
        }
    
    
    
    }

[f11df7bf5c0c41128f1d5c4f90d0525f.png]: https://img-blog.csdnimg.cn/f11df7bf5c0c41128f1d5c4f90d0525f.png