jfinal统一的异常及日志处理的拦截器

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最近在用轻量级Java web开发框架jfinal开发一个网站，由于网站是sns类型很多ajax交互请求。

考虑简化冗余代码，写了一个统一的异常及日志处理的拦截器。

自适配ajax请求和普通定向请求，输出错误信息。

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;
	}

}

 

评论

2 楼 vakin.jiang 2014-04-12  

这其实就是一个单独的类，其他都是一些vo之类的，已经是一个完整源码了

1 楼 sunshineboy_sulie 2014-04-05  

giianhui 写道

能否提供完整的源码