如何接受来自Ajax调用控制器串retrun [英] how to accept string retrun from controller in ajax call

问题描述

我有一个jsp页面中说，像这样

I have a jsp page say something like this

 <div id="result">
Connection not Enabled  
<br>
<br>

<button id="enableconnection">Click to Enable connection
    </button></div>

一旦我们连接上点击未启用按钮，它会做一些处理，最后它调用一个js函数是这样的：

once we click on connection not Enabled button it will do some process and at last it invoke a js function like this:

$.ajax({
                url:contextPath +"/submitAllInfo",
                type: 'POST',
                data: formdata,
                async: false,
                processData: false,
                contentType: false, 
                success: function (data) {
                    $("#result").html(data);

                },
                error: function (){
                    alert("error has cocured");
                },
                cache: false

                });

控制器逻辑

  @RequestMapping(value = "/action", method = RequestMethod.POST)
@ResponseStatus(value = HttpStatus.OK)
public @ResponseBody
String insertAllStepDetails(){
// some code 
 String t ="done";
return t; 

}

现在respose是进入js函数的误差块没有成功，如何让在Ajax调用成功阻止此字符串值？

Now respose is going into error block of js function not in success how to get this string value in success block of ajax call ?

推荐答案

网​​址：的contextPath +/ submitAllInfo，此URL不与下面的动作相匹配。

url:contextPath +"/submitAllInfo", this url is not matching with below action

@RequestMapping（值=/动作，方法= RequestMethod.POST）

，你也传递数据从 Ajax请求但并没有什么处理的控制器方法 字符串insertAllStepDetails（）应该是这样

and also you passing data from your ajax request but there is nothing to handle in controller method String insertAllStepDetails() it should be like

1. 字符串insertAllStepDetails（@ModelAttribute（FORMDATA）AnyClass OBJ）或
2. 字符串insertAllStepDetails（HttpServletRequest的要求）

1. String insertAllStepDetails(@ModelAttribute("formData") AnyClass obj) or
2. String insertAllStepDetails(HttpServletRequest request)

和还删除过程数据：假的，从 Ajax请求

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