spring mvc对异常的统一处理

<bean class="com.test.util.page.WebExceptionResolver" />

package com.test.util.page;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.web.servlet.HandlerExceptionResolver;

import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

public class WebExceptionResolver

implements HandlerExceptionResolver

{

public static final Logger logger = LoggerFactory.getLogger(WebExceptionResolver.class);

public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception e)

{

try {

if (!(request.getHeader("accept").contains("application/json") ||

(request.getHeader("X-Requested-With") != null && request.getHeader("X-Requested-With").contains("XMLHttpRequest")))) {//不是ajax请求

return new ModelAndView("/exception", "exception", e);

} else {

try {

response.setHeader("REQUEST_ERROR_KEY", "true");

response.setContentType("text/html;charset=utf-8");

response.getWriter().write(new ResponseState(e).toString());

response.getWriter().flush();

response.getWriter().close();

} catch (IOException ex) {

ex.printStackTrace();

}

}

return null;

}finally{

logger.error("系统发生异常,访问路径:" + request.getServletPath());

}

}

}

package com.test.util.page;

import org.apache.ibatis.exceptions.TooManyResultsException;

import java.sql.SQLException;

/**

* 增删改时返回前端的判断实体

* @author Lihhz 2017-03-15

*

*/

public class ResponseState {

/**错误信息*/

protected String message;

/**错误编码*/

protected short code;

/**是否成功*/

protected boolean success;

/**返回数据*/

protected Object data;

public ResponseState() {

this.code = 0;

this.success = true;

this.data = null;

}

public ResponseState(String message) {

this.message = message;

}

public ResponseState(short code, String message) {

this.code = code;

this.message = message;

}

public ResponseState(boolean success, String message) {

this.success = success;

this.message = message;

}

public ResponseState(short code, boolean success, String message) {

this.code = code;

this.success = success;

this.message = message;

}

public ResponseState(Exception ex) {

this.code = -1;

this.success = false;

if (ex.getMessage() == null) {

this.message = "参数不正确或不完整";

} else if (ex.getCause() instanceof SQLException)

this.message = "服务器异常：执行数据库语句错误";

else if(ex.getCause() instanceof TooManyResultsException)

this.message = "应该查询出一条结果,但查询出多条结果.";

else

setMessage(ex.getMessage());

}

public String getMessage() {

return this.message;

}

public void setMessage(String message) {

if (message != null)

message = message.replace("\"", "'").replace('\r', '\0');

this.message = message;

}

public short getCode() {

return this.code;

}

public void setCode(short code) {

this.code = code;

}

public boolean getSuccess() {

return this.success;

}

public void setSuccess(boolean success) {

this.success = success;

}

public Object getData() {

return this.data;

}

public void setData(Object data) {

this.data = data;

}

public String toString() {

StringBuffer sbJson = new StringBuffer("{\"code\":");

sbJson.append(this.code).append(",\"message\":\"").append(this.message)

.append("\",").append("\"success\":").append(this.success)

.append("}");

return sbJson.toString();

}

}

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>

<%

Exception e = (Exception)request.getAttribute("exception");

%>

<div id='exception-div-11111'></div>

<script type="text/javascript">

alert("服务器发生异常:异常信息:<%=e.getMessage()%>");

//如果是modal的话,关闭,解决页面不能点击的问题

if($('#exception-div-11111').parent().hasClass('modal-content')){

$('#exception-div-11111').parent().parent().parent().modal('hide');

$('#exception-div-11111').parent().parent().parent().removeData("bs.modal");

}

</script>

/**

* jquery的ajax post封装

*/

$.postAjax = function(url,data,callback){

$.ajax({

async : false,

url:url,

type:"post",

dataType:"json",

data:data,

//        timeout:6000,

beforeSend : loading_start(),

success:function(msg){

if(msg.hasOwnProperty("code") && -1 == msg.code){//异常的统一处理

$.alert(msg.message);

return;

}

callback(msg);

  },

error:errorObj,

complete : loading_end()

});

};