jfinal统一的异常及日志处理的拦截器

摘要: 一个jfinal统一的异常及日志处理的拦截器,实现对异常拦截自动判断是否ajax请求从而采取不同的错误输出方式，另外通过根据配置对指定url进行行为日志记录

分享一个jfinal统一的异常及日志处理的拦截器

直接上代码吧

package com.smhaochi.web.interceptor;
import java.util.Date;
import java.util.Map;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.lang.StringUtils;
import com.smhaochi.exception.BaseBussException;
import com.smhaochi.model.ActionLog;
import com.smhaochi.model.Menu;
import com.smhaochi.vo.ActionLogVo;
import com.smhaochi.web.controller.BaseController;
import com.jfinal.aop.Interceptor;
import com.jfinal.core.ActionInvocation;
import com.jfinal.core.JFinal;
import com.jfinal.log.Logger;
/**
* @title: 日志/异常处理拦截器
* @className: ActionLogInterceptor
* @description: TODO
* @company: FOREVEROSS
* @author: <a href="http://www.smhaochi.com">vakin jiang</a>
* @createDate: 2014年4月2日
* @version: 1.0
*/
public class ExceptionAndLogInterceptor implements Interceptor {
private static final Logger log = Logger.getLogger(ExceptionAndLogInterceptor.class);
@Override
public void intercept(ActionInvocation ai) {
BaseController controller = (BaseController)ai.getController();
HttpServletRequest request = controller.getRequest();

boolean successed = false;
try {
ai.invoke();
successed = true;
} catch (Exception e) {
//
doLog(ai,e);
//判断是否ajax请求
String header = request.getHeader("X-Requested-With");
boolean isAjax = "XMLHttpRequest".equalsIgnoreCase(header);
String msg = formatException(e);
if(isAjax){
msg = new StringBuilder().append("{\"status\":\"0\",\"msg\":\"")
.append(msg).append("\"}").toString();
controller.renderJson(msg);
}else{
String redirctUrl = request.getHeader("referer");
if(StringUtils.isBlank(redirctUrl)){
redirctUrl = request.getRequestURI();
}
controller.setAttr("message", msg);
controller.setAttr("redirctUrl",redirctUrl);
controller.render("../public/failed.ftl");
}
}finally{
//记录日志
try {
Menu menu = matchDefineRecordLogMenu(request);
if(menu != null){
ActionLogVo actionLog = controller.wrapActionLog();
new ActionLog().set(ActionLog.ACT_NAME, menu.getName())//
.set(ActionLog.ACT_TIME, new Date())//
.set(ActionLog.DATA, actionLog.getData())//
.set(ActionLog.IP, actionLog.getIp())//
.set(ActionLog.SUCESSED, successed)//
.set(ActionLog.URI, actionLog.getUri())//
.set(ActionLog.USER_ID, actionLog.getUserId())//
.set(ActionLog.USER_NAME, actionLog.getUserName())//
.save();
}
} catch (Exception e2) {}

}
}

/**
* @methodName: matchDefineRecordLogMenu
* @description: 匹配已定义需要记录日志的菜单
* @author: vakinge
* @createDate: 2014年4月3日
* @param request
* @return
*/
private Menu matchDefineRecordLogMenu(HttpServletRequest request) {
Map<String, Menu> menus = Menu.getAllUrlMenus();
if(menus != null){
String uri = request.getRequestURI();
Set<String> urls = menus.keySet();
for (String url : urls) {
if(url == null)continue;
//url匹配 && 有参数 && 已配置记录日志
if(url.contains(uri)
&& request.getParameterNames().hasMoreElements()
&& menus.get(url).isRecordLog()){
return menus.get(url);
}
}
}
return null;
}
/**
* @methodName: doLog
* @description: 记录log4j日志
* @author: vakinge
* @createDate: 2014年4月3日
* @param ai
* @param e
*/
private void doLog(ActionInvocation ai,Exception e) {
//开发模式
if(JFinal.me().getConstants().getDevMode()){
e.printStackTrace();
}
//业务异常不记录 ？？
if( e instanceof BaseBussException)return;
StringBuilder sb =new StringBuilder("\n---Exception Log Begin---\n");
sb.append("Controller:").append(ai.getController().getClass().getName()).append("\n");
sb.append("Method:").append(ai.getMethodName()).append("\n");
sb.append("Exception Type:").append(e.getClass().getName()).append("\n");
sb.append("Exception Details:");
log.error(sb.toString(), e);
}
/**
* 格式化异常信息，用于友好响应用户
* @param e
* @return
*/
private static String formatException(Exception e){
String message = null;
Throwable ourCause = e;
while ((ourCause = e.getCause()) != null) {
e = (Exception) ourCause;
}
String eClassName = e.getClass().getName();
//一些常见异常提示
if("java.lang.NumberFormatException".equals(eClassName)){
message = "请输入正确的数字";
}else if (e instanceof BaseBussException || e instanceof RuntimeException) {
message = e.getMessage();
if(StringUtils.isBlank(message))message = e.toString();
}

//获取默认异常提示
if (StringUtils.isBlank(message)){
message = "系统繁忙,请稍后再试";
}
//替换特殊字符
message = message.replaceAll("\"", "'");
return message;
}
}