java SpringAOP拦截Controller,Service实现日志管理(自定义注解的方式)

做日志管理最好的是Aop，有的人也喜欢用拦截器。都可以，在此我重点介绍我的实现方式。

Aop有的人说拦截不到Controller。有的人说想拦AnnotationMethodHandlerAdapter截到Controller必须得拦截org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter。

首先Aop可以拦截到Controller的，这个是毋容置疑的其次须拦截AnnotationMethodHandlerAdapter也不是必须的。最起码我没有验证成功过这个。我的Spring版本是4.0.3。

Aop之所以有的人说拦截不到Controller是因为Controller被jdk代理了。我们只要把它交给cglib代理就可以了。

第一步定义两个注解：

Java代码

package com.annotation;
import java.lang.annotation.*;
/**
 *自定义注解 拦截Controller
 */
@Target({ElementType.PARAMETER, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public  @interface SystemControllerLog {
    String description()  default ”";
}

package com.annotation;
import java.lang.annotation.*;
/**
 *自定义注解 拦截service
 */
@Target({ElementType.PARAMETER, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public  @interface SystemServiceLog {
    String description()  default ”";
}

第二步创建一个切点类：

Java代码

package com.annotation;
import com.model.Log;
import com.model.User;
import com.service.LogService;
import com.util.DateUtil;
import com.util.JSONUtil;
import com.util.SpringContextHolder;
import com.util.WebConstants;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.lang.reflect.Method;
/**
 * 切点类
 * @author tiangai
 * @since 2014-08-05 Pm 20:35
 * @version 1.0
 */
@Aspect
@Component
public  class SystemLogAspect {
    //注入Service用于把日志保存数据库
    @Resource
     private LogService logService;
    //本地异常日志记录对象
     private  static  final Logger logger = LoggerFactory.getLogger(SystemLogAspect. class);
    //Service层切点
    @Pointcut(“@annotation(com.annotation.SystemServiceLog)”)
     public  void serviceAspect() {
    }
    //Controller层切点
    @Pointcut(“@annotation(com.annotation.SystemControllerLog)”)
     public  void controllerAspect() {
    }
    /**
     * 前置通知 用于拦截Controller层记录用户的操作
     *
     * @param joinPoint 切点
     */
    @Before(“controllerAspect()”)
     public  void doBefore(JoinPoint joinPoint) {
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        HttpSession session = request.getSession();
        //读取session中的用户
        User user = (User) session.getAttribute(WebConstants.CURRENT_USER);
        //请求的IP
        String ip = request.getRemoteAddr();
         try {
            //*========控制台输出=========*//
            System.out.println(“=====前置通知开始=====”);
            System.out.println(“请求方法:” + (joinPoint.getTarget().getClass().getName() + ”.” + joinPoint.getSignature().getName() + ”()”));
            System.out.println(“方法描述:” + getControllerMethodDescription(joinPoint));
            System.out.println(“请求人:” + user.getName());
            System.out.println(“请求IP:” + ip);
            //*========数据库日志=========*//
            Log log = SpringContextHolder.getBean(“logxx”);
            log.setDescription(getControllerMethodDescription(joinPoint));
            log.setMethod((joinPoint.getTarget().getClass().getName() + ”.” + joinPoint.getSignature().getName() + ”()”));
            log.setType(“0″);
            log.setRequestIp(ip);
            log.setExceptionCode( null);
            log.setExceptionDetail( null);
            log.setParams( null);
            log.setCreateBy(user);
            log.setCreateDate(DateUtil.getCurrentDate());
            //保存数据库
            logService.add(log);
            System.out.println(“=====前置通知结束=====”);
        }  catch (Exception e) {
            //记录本地异常日志
            logger.error(“==前置通知异常==”);
            logger.error(“异常信息:{}”, e.getMessage());
        }
    }
    /**
     * 异常通知 用于拦截service层记录异常日志
     *
     * @param joinPoint
     * @param e
     */
    @AfterThrowing(pointcut = ”serviceAspect()”, throwing = ”e”)
     public  void doAfterThrowing(JoinPoint joinPoint, Throwable e) {
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        HttpSession session = request.getSession();
        //读取session中的用户
        User user = (User) session.getAttribute(WebConstants.CURRENT_USER);
        //获取请求ip
        String ip = request.getRemoteAddr();
        //获取用户请求方法的参数并序列化为JSON格式字符串
        String params = ”";
         if (joinPoint.getArgs() !=  null && joinPoint.getArgs().length > 0) {
             for ( int i = 0; i < joinPoint.getArgs().length; i++) {
                params += JSONUtil.toJsonString(joinPoint.getArgs()[i]) + ”;”;
            }
        }
         try {
              /*========控制台输出=========*/
            System.out.println(“=====异常通知开始=====”);
            System.out.println(“异常代码:” + e.getClass().getName());
            System.out.println(“异常信息:” + e.getMessage());
            System.out.println(“异常方法:” + (joinPoint.getTarget().getClass().getName() + ”.” + joinPoint.getSignature().getName() + ”()”));
            System.out.println(“方法描述:” + getServiceMthodDescription(joinPoint));
            System.out.println(“请求人:” + user.getName());
            System.out.println(“请求IP:” + ip);
            System.out.println(“请求参数:” + params);
               /*==========数据库日志=========*/
            Log log = SpringContextHolder.getBean(“logxx”);
            log.setDescription(getServiceMthodDescription(joinPoint));
            log.setExceptionCode(e.getClass().getName());
            log.setType(“1″);
            log.setExceptionDetail(e.getMessage());
            log.setMethod((joinPoint.getTarget().getClass().getName() + ”.” + joinPoint.getSignature().getName() + ”()”));
            log.setParams(params);
            log.setCreateBy(user);
            log.setCreateDate(DateUtil.getCurrentDate());
            log.setRequestIp(ip);
            //保存数据库
            logService.add(log);
            System.out.println(“=====异常通知结束=====”);
        }  catch (Exception ex) {
            //记录本地异常日志
            logger.error(“==异常通知异常==”);
            logger.error(“异常信息:{}”, ex.getMessage());
        }
         /*==========记录本地异常日志==========*/
        logger.error(“异常方法:{}异常代码:{}异常信息:{}参数:{}”, joinPoint.getTarget().getClass().getName() + joinPoint.getSignature().getName(), e.getClass().getName(), e.getMessage(), params);
    }
    /**
     * 获取注解中对方法的描述信息 用于service层注解
     *
     * @param joinPoint 切点
     * @return 方法描述
     * @throws Exception
     */
     public  static String getServiceMthodDescription(JoinPoint joinPoint)
             throws Exception {
        String targetName = joinPoint.getTarget().getClass().getName();
        String methodName = joinPoint.getSignature().getName();
        Object[] arguments = joinPoint.getArgs();
        Class targetClass = Class.forName(targetName);
        Method[] methods = targetClass.getMethods();
        String description = ”";
         for (Method method : methods) {
             if (method.getName().equals(methodName)) {
                Class[] clazzs = method.getParameterTypes();
                 if (clazzs.length == arguments.length) {
                    description = method.getAnnotation(SystemServiceLog. class).description();
                     break;
                }
            }
        }
         return description;
    }
    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param joinPoint 切点
     * @return 方法描述
     * @throws Exception
     */
     public  static String getControllerMethodDescription(JoinPoint joinPoint)  throws Exception {
        String targetName = joinPoint.getTarget().getClass().getName();
        String methodName = joinPoint.getSignature().getName();
        Object[] arguments = joinPoint.getArgs();
        Class targetClass = Class.forName(targetName);
        Method[] methods = targetClass.getMethods();
        String description = ”";
         for (Method method : methods) {
             if (method.getName().equals(methodName)) {
                Class[] clazzs = method.getParameterTypes();
                 if (clazzs.length == arguments.length) {
                    description = method.getAnnotation(SystemControllerLog. class).description();
                     break;
                }
            }
        }
         return description;
    }
}

第三步把Controller的代理权交给cglib

在实例化ApplicationContext的时候需要加上

Xml代码

<!–通知spring使用cglib而不是jdk的来生成代理方法 AOP可以拦截到Controller->
<aop:aspectj-autoproxy proxy-target-class=”true” />

第四步使用

Controller层的使用

Java代码

/**
    * 删除用户
    *
    * @param criteria 条件
    * @param id       id
    * @param model    模型
    * @return 数据列表
    */
   @RequestMapping(value = ”/delete”)
   //此处为记录AOP拦截Controller记录用户操作
   @SystemControllerLog(description = ”删除用户”)
    public String del(Criteria criteria, String id, Model model, HttpSession session) {
        try {
           User user = (User) session.getAttribute(WebConstants.CURRENT_USER);
            if ( null != user) {
                if (user.getId().equals(id)) {
                   msg = ”您不可以删除自己!”;
                   criteria = userService.selectByCriteriaPagination(criteria);
               }  else {
                   //删除数据并查询出数据
                   criteria = userService.delete(id, criteria);
                   msg = ”删除成功!”;
               }
           }
       }  catch (Exception e) {
           msg = ”删除失败!”;
       }  finally {
           model.addAttribute(“msg”, msg);
           model.addAttribute(“criteria”, criteria);
       }
       //跳转列表页
        return ”user/list”;
   }

Service层的使用

Java代码

/**
    * 按照分页查询
    * @param criteria
    * @return
    */
   //此处为AOP拦截Service记录异常信息。方法不需要加try-catch
   @SystemServiceLog(description = ”查询用户”)
    public Criteria<User> selectByCriteriaPagination(Criteria<User> criteria)
   {
       criteria.getList().get(0).getAccount();
       //查询总数
        long total=userMapper.countByCriteria(criteria);
       //设置总数
       criteria.setRowCount(total);
       criteria.setList(userMapper.selectByCriteriaPagination(criteria));
        return  criteria;
   }