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

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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

[java] view plain copy

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 ”";
}

[java] view plain copy

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

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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

[html] view plain copy

<!– 启动对@AspectJ注解的支持 –>
<aop:aspectj-autoproxy/>

在调用Controller的时候AOP发挥作用所以在SpringMVC的配置文件里加上

Xml代码

[html] view plain copy

<!–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

[java] view plain copy

/**
* 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

[java] view plain copy

/**
* 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;
}

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