使用Aspect切面实现系统日志并存入数据库

1.pom.xml中:加入Maven依赖

<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-aspects</artifactId>
	<version>${spring.version}</version>
/dependency>
           

2.SpringMVC.xml中:开启切面注解

<aop:aspectj-autoproxy proxy-target-class="true" />
           

3.自定义注解用于切面切入点

import java.lang.annotation.*;

/**
 * 系统日志注解
 * 
 * @author wangxueqing
 */
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface SysLog {

   String value() default "";
}
           

4.自定义切面在方法执行时自动执行

import com.alibaba.fastjson.JSON;
import com.sm.share3d.annotion.SysLog;
import com.sm.share3d.bean.SysLogEntity;
import com.sm.share3d.utils.HttpContextUtils;
import com.sm.share3d.utils.IPUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;


/**
 * 系统日志，切面处理类
 * 
 * @author wangxueqing
 */
@Component
@Aspect
public class SysLogAspect {

   //切入点，以方法的形式存在
   @Pointcut("@annotation(com.sm.share3d.annotion.SysLog)")
   public void sportPoint(){
      System.out.println(1111111);
   }

   @Before("sportPoint()")
   public void before(JoinPoint joinPoint){
      MethodSignature signature = (MethodSignature) joinPoint.getSignature();
      Method method = signature.getMethod();

      SysLogEntity logEntity = new SysLogEntity();
      SysLog syslog = method.getAnnotation(SysLog.class);
      if(syslog != null){
         //注解上的描述
         logEntity.setOperation(syslog.value());
      }

      //请求的方法名
      String className = joinPoint.getTarget().getClass().getName();
      String methodName = signature.getName();
      logEntity.setMethod(className + "." + methodName + "()");

      //请求的参数
      Object[] args = joinPoint.getArgs();
      if(args.length>0){
         /*String params = JSON.toJSONString(args[0]);
         logEntity.setParams(params);*/
      }


      //获取request
      HttpServletRequest request = HttpContextUtils.getHttpServletRequest();
      //设置IP地址
      logEntity.setIp(IPUtils.getIpAddr(request));

      //用户名
//    String username = ShiroUtils.getUserEntity().getUsername();
      logEntity.setUsername(username);
      logEntity.setCreateDate(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
      sysLogService.save(logEntity);
   }
}

           

5.在Controller层需要保存日志的方法上加上自定义的注解

/**
* 保存用户
* @param user
* @return
*/
@SysLog("新增用户")
@RequestMapping("/saveUser")
public R saveUser(@RequestBody User user){
    try {
	userService.save(user);
	return R.ok();
    } catch (Exception e) {
	e.printStackTrace();
        return R.error("新增失败");
    }		
}