简单好用的前台异常提示jsp

用ajax提交form可以和好的返回异常信息进行提示，免得做全局的异常处理，这样的话不必throw Exception

，直接像正常一样返回错误信息即可,此时结合response.getWriter().print(strJsonMsg);用这个的时候最好返回void，或者return null，否则print的信息会被覆盖。

一般用一个对象封装返回信息，返回前把这个对象转化为jsonobject，然后转化为String打印给前台（bean--->jsonobject--->String）

 

throw new Exception("最多允许添加："+((BigDecimal)userNum.get("SET_USER_NUM")).intValue()+"个子账户");异常里面抛出的信息可以e.getMessage()直接获取到

 

<form method="post" id="operateUserAddForm">

     

        <div class="htbh">

         <div class="fl">

        <label for="" class="ul_form_label w130 pr5"><font color="red">* </font>姓名：</label>

          <input class="date_search_input230" type="text" name="man" id="cusUser_MAN"/>

         </div>

        </div>

        

        

       <!--button 开始-->

 <div class="tc mb20 mt20 cb">

 

 <!-- 获取可选角色个数，为使能/失能 保存按钮服务-->

     <%-- <input type="hidden" id="role_notice" value='<s:property value="#request.datas.size()"/>'/> --%>

     <input name="input" id="saveBtn" type="button" onclick="add();" class="btnhr30 mr5" value="保 存"/>

     <input name="" type="reset" class="btnhh30 ml5" value="重置" />

         <!-- <s:reset cssClass="btnhh30 ml5" value="重置"></s:reset> -->

     </div>

     </form>

 

 

 

 

//添加保存

function add(){

if(!check()){

return false;

}

//alert(66);

$("#saveBtn").attr("disabled",true);

$("#saveBtn").removeClass("btnhr30");

$("#saveBtn").addClass("btnhh30");

$.ajax({

url:"${path}/myaccount/addUser",

type:"post",

cache:false,

async:true,

dataType:"json",

data:$("#operateUserAddForm").formSerialize(),

success:function(ret){

//alert(00);

if(ret.status==0){

//alert(11);

$.zd.alert("","【"+$("#cusUser_MAN").val()+"】操作员信息创建成功！",function(){

window.location.href="${path}/myaccount/getAccount";

});

}else{

//alert(22);

$.zd.alert('',ret.msg,function(){

$("#saveBtn").removeAttr("disabled");

$("#saveBtn").removeClass("btnhh30");

$("#saveBtn").addClass("btnhr30");

});

}

},

error:function(retMsg){

//alert(33);

//alert(retMsg.status);

//alert(retMsg.msg);

//displayProp(retMsg);

try{

//var ret = eval("("+retMsg.responseText+")");

if(retMsg.status!=0){

$.zd.alert('',retMsg.msg,function(){

$("#saveBtn").removeAttr("disabled");

$("#saveBtn").removeClass("btnhh30");

$("#saveBtn").addClass("btnhr30");

});

}

}catch(eee){

}

}

});

}

 

 

 

 

 

 

@RequestMapping(value = "/addUser")

public String addUser(Model model,TbCusUserBeanVo tbCusUserBeanVo, @RequestParam(value="rolesKey") String rolesKey,@RequestParam(value="pz") String[] pz,HttpServletRequest request,HttpServletResponse response, HttpSession session) throws Exception {

CusUserBean getCusUser= CASUtil.getCusUser(request, session);

if(tbCusUserBeanVo==null){

return null;

}

tbCusUserBeanVo.setCustomerKey(BigDecimal.valueOf(Long.valueOf(getCusUser.getCustomerKey())));

try{

Map<String,Object> param =new HashMap<String,Object>();

param.put("CUSTOMER_KEY", tbCusUserBeanVo.getCustomerKey());

Map userNum =accountService.getUserNum(param);

response.setCharacterEncoding("UTF-8");

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

if(userNum==null){

accountService.addOperateUser(tbCusUserBeanVo, rolesKey, pz);

JsonMsg msg= new JsonMsg("0","添加成功");

String strJsonMsg = JSONUtils.toJSONString(JSONObject.fromObject(msg));

response.getWriter().print(strJsonMsg);

    response.getWriter().flush();

}else{

int i =((BigDecimal)userNum.get("COUNT")).intValue();

if(((BigDecimal)userNum.get("SET_USER_NUM")).intValue()<i+1){

JsonMsg msg= new JsonMsg("-1","最多允许添加："+((BigDecimal)userNum.get("SET_USER_NUM")).intValue()+"个子账户");

String strJsonMsg = JSONUtils.toJSONString(JSONObject.fromObject(msg));

response.getWriter().print(strJsonMsg);

    response.getWriter().flush();

// throw new Exception("最多允许添加："+((BigDecimal)userNum.get("SET_USER_NUM")).intValue()+"个子账户");

}else{

accountService.addOperateUser(tbCusUserBeanVo, rolesKey, pz);

JsonMsg msg= new JsonMsg("0","添加成功");

String strJsonMsg = JSONUtils.toJSONString(JSONObject.fromObject(msg));

response.getWriter().print(strJsonMsg);

    response.getWriter().flush();

}

 

}

   

}catch(Exception e){

JsonMsg msg= new JsonMsg("-1",e.getMessage());////异常里面抛出的信息可以e.getMessage()直接获取到

String strJsonMsg = JSONUtils.toJSONString(JSONObject.fromObject(msg));

response.getWriter().print(strJsonMsg);

    response.getWriter().flush();

e.printStackTrace();

 

return null;

}

return null;

}

 

 

JSONUtils.java

public static String toJSONString(JSONObject jsonObject) {

return jsonObject.toString();

}