首先我們爲什麼需要做日誌管理,在現實的上線中我們經常會遇到系統出現異常或者問題。這個時候就馬上打開CRT或者SSH連上服務器拿日子來分析。受網絡的各種限制。於是我們就想爲什麼不能直接在管理後臺查看報錯的信息呢。於是日誌管理就出現了。
其次個人覺得做日誌管理最好的是Aop,有的人也喜歡用攔截器。都可以,在此我重點介紹我的實現方式。
Aop有的人說攔截不到Controller。有的人說想攔AnnotationMethodHandlerAdapter截到Controller必須得攔截org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter。
首先Aop可以攔截到Controller的,這個是毋容置疑的其次須攔截AnnotationMethodHandlerAdapter也不是必須的。最起碼我沒有驗證成功過這個。我的Spring版本是4.0.3。
Aop之所以有的人說攔截不到Controller是因爲Controller被jdk代理了。我們只要把它交給cglib代理就可以了。
- package com.annotation;
- import java.lang.annotation.*;
- /**
- *自定義註解 攔截Controller
- */
- @Target({ElementType.PARAMETER, ElementType.METHOD})
- @Retention(RetentionPolicy.RUNTIME)
- @Documented
- public @interface SystemControllerLog {
- String description() default "";
- }
- package com.annotation;
- import java.lang.annotation.*;
- /**
- *自定義註解 攔截service
- */
- @Target({ElementType.PARAMETER, ElementType.METHOD})
- @Retention(RetentionPolicy.RUNTIME)
- @Documented
- public @interface SystemServiceLog {
- String description() default "";
- }
第二步創建一個切點類:
- 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;
- /**
- * 切點類
- * @author tiangai
- * @since 2014-08-05 Pm 20:35
- * @version 1.0
- */
- @Aspect
- @Component
- public class SystemLogAspect {
- //注入Service用於把日誌保存數據庫
- @Resource
- private LogService logService;
- //本地異常日誌記錄對象
- private static final Logger logger = LoggerFactory.getLogger(SystemLogAspect. class);
- //Service層切點
- @Pointcut("@annotation(com.annotation.SystemServiceLog)")
- public void serviceAspect() {
- }
- //Controller層切點
- @Pointcut("@annotation(com.annotation.SystemControllerLog)")
- public void controllerAspect() {
- }
- /**
- * 前置通知 用於攔截Controller層記錄用戶的操作
- *
- * @param joinPoint 切點
- */
- @Before("controllerAspect()")
- public void doBefore(JoinPoint joinPoint) {
- HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
- HttpSession session = request.getSession();
- //讀取session中的用戶
- User user = (User) session.getAttribute(WebConstants.CURRENT_USER);
- //請求的IP
- String ip = request.getRemoteAddr();
- try {
- //*========控制檯輸出=========*//
- System.out.println("=====前置通知開始=====");
- System.out.println("請求方法:" + (joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()"));
- System.out.println("方法描述:" + getControllerMethodDescription(joinPoint));
- System.out.println("請求人:" + user.getName());
- System.out.println("請求IP:" + ip);
- //*========數據庫日誌=========*//
- 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());
- //保存數據庫
- logService.add(log);
- System.out.println("=====前置通知結束=====");
- } catch (Exception e) {
- //記錄本地異常日誌
- logger.error("==前置通知異常==");
- logger.error("異常信息:{}", e.getMessage());
- }
- }
- /**
- * 異常通知 用於攔截service層記錄異常日誌
- *
- * @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();
- //讀取session中的用戶
- User user = (User) session.getAttribute(WebConstants.CURRENT_USER);
- //獲取請求ip
- String ip = request.getRemoteAddr();
- //獲取用戶請求方法的參數並序列化爲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 {
- /*========控制檯輸出=========*/
- System.out.println("=====異常通知開始=====");
- System.out.println("異常代碼:" + e.getClass().getName());
- System.out.println("異常信息:" + e.getMessage());
- System.out.println("異常方法:" + (joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()"));
- System.out.println("方法描述:" + getServiceMthodDescription(joinPoint));
- System.out.println("請求人:" + user.getName());
- System.out.println("請求IP:" + ip);
- System.out.println("請求參數:" + params);
- /*==========數據庫日誌=========*/
- 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);
- //保存數據庫
- logService.add(log);
- System.out.println("=====異常通知結束=====");
- } catch (Exception ex) {
- //記錄本地異常日誌
- logger.error("==異常通知異常==");
- logger.error("異常信息:{}", ex.getMessage());
- }
- /*==========記錄本地異常日誌==========*/
- logger.error("異常方法:{}異常代碼:{}異常信息:{}參數:{}", joinPoint.getTarget().getClass().getName() + joinPoint.getSignature().getName(), e.getClass().getName(), e.getMessage(), params);
- }
- /**
- * 獲取註解中對方法的描述信息 用於service層註解
- *
- * @param joinPoint 切點
- * @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;
- }
- /**
- * 獲取註解中對方法的描述信息 用於Controller層註解
- *
- * @param joinPoint 切點
- * @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的代理權交給cglib
在實例化ApplicationContext的時候需要加上
在調用Controller的時候AOP發揮作用所以在SpringMVC的配置文件里加上
- <!--通知spring使用cglib而不是jdk的來生成代理方法 AOP可以攔截到Controller->
- <aop:aspectj-autoproxy proxy-target-class="true" />
第四步使用
Controller層的使用
- /**
- * 刪除用戶
- *
- * @param criteria 條件
- * @param id id
- * @param model 模型
- * @return 數據列表
- */
- @RequestMapping(value = "/delete")
- //此處爲記錄AOP攔截Controller記錄用戶操作
- @SystemControllerLog(description = "刪除用戶")
- 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 = "您不可以刪除自己!";
- criteria = userService.selectByCriteriaPagination(criteria);
- } else {
- //刪除數據並查詢出數據
- criteria = userService.delete(id, criteria);
- msg = "刪除成功!";
- }
- }
- } catch (Exception e) {
- msg = "刪除失敗!";
- } finally {
- model.addAttribute("msg", msg);
- model.addAttribute("criteria", criteria);
- }
- //跳轉列表頁
- return "user/list";
- }
Service層的使用
- /**
- * 按照分頁查詢
- * @param criteria
- * @return
- */
- //此處爲AOP攔截Service記錄異常信息。方法不需要加try-catch
- @SystemServiceLog(description = "查詢用戶")
- public Criteria<User> selectByCriteriaPagination(Criteria<User> criteria)
- {
- criteria.getList().get(0).getAccount();
- //查詢總數
- long total=userMapper.countByCriteria(criteria);
- //設置總數
- criteria.setRowCount(total);
- criteria.setList(userMapper.selectByCriteriaPagination(criteria));
- return criteria;
- }