如何从ajax响应中读取特定值 [英] How to read specific value from ajax response

问题描述

我想阅读具体的价值。

通过使用以下代码，我得到以下数据

 <？  xml    版本  =  1.0   编码  =  utf- 8 ？ >  
 <   soap：Envelope     xmlns： xsi   =  http://www.w3.org/2001/XMLSchema-instance    xmlns：xsd   =  http://www.w3.org/2001/XMLSchema    xmlns：soap   =  http://schemas.xmlsoap.org/soap/envelope/ >  
 <   soap：正文 >  
 <   New_Data     xmlns   =  http://tempuri.org/    /  >   <   New_DataResult  >  MH1234 <   / New_DataResult  >  
 <   / soap：正文 >  
 <   / soap：Envelope  >  

但我只想要价值= MH1234



我尝试了什么：

< script type =   text / javascript> 
 setInterval（ function （）{
  var  webserurl =   http：// localhost：4650 / WebService1.asmx; 
  var  soaprequest = 
 '  \ 
< soap：envelope xmlns： xsi =http://www.w3.org/2001/XMLSchema-instancemode =holdxmlns：soap =＃unknown/> xmlns：xsd =http://www.w3.org/ 2001 / XMLSchema\ 
 xmlns：soap =http://schemas.xmlsoap.org/soap/envelope/> \ 
< soap：body xmlns：soap =＃unknown > \ 
< new_data xmlns =http://tempuri.org//> \ 
< / soap：body> \ 
'; 
 
 $ .ajax（{
 type：  POST，
 url：webserurl，
 contentType：  text / XML，
 dataType：  text，
 data：soaprequest，
成功：SuccessOccur， 
错误：ErrorOccur 
}）; 
  function  SuccessOccur（data，status，req）{
  if （status = =   success）
 alert（data）
} 
  function  ErrorOccur（data，status，req）{
 alert（req.responseText +  < span class =code-string> + status）; 
} 
 
}， 3000 ）; 
< / script> 

解决方案

.ajax（{
type： POST，
url：webserurl，
contentType： text / XML，
dataType： text，
data：soaprequest，
success：SuccessOccur，
error：ErrorOccur
}）;
function SuccessOccur（data，status，req）{
if （status = = success）
alert（data）
}
function ErrorOccur（data，status，req）{
alert（req.responseText + < span class =code-string> + status）;
}

}， 3000 ）;
< / script>

这个jsFiddle可以给你一个想法：使用XPath在JavaScript中解析（基于SOAP）XML - JSFiddle [ ^ ]。



您将能够找到许多其他特殊代码示例。更一般地，您可以使用JavaScript通用XML解析器来传递SOAP。特别是，您可以使用jQuery： jQuery.parseXML（）| jQuery API文档 [ ^ ]。



另请参阅：解析和序列化XML - Web开发人员指南| MDN [ ^ ]。



但我认为Kornfeld Eliyahu Peter在回答评论时提出了更好的方法。请改用JSON。如果您使用Ajax，则意味着您可以访问服务器端代码并​​可以正确编写。

-SA

i want to read specific value.
By using Below code i got following Data

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <New_Data xmlns="http://tempuri.org/" /><New_DataResult>MH1234</New_DataResult>
  </soap:Body>
</soap:Envelope>

but i want only value= MH1234

What I have tried:

<script type="text/javascript">
      setInterval(function () {
          var webserurl = "http://localhost:4650/WebService1.asmx";
          var soaprequest =
           ' \
           <soap:envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" mode="hold" xmlns:soap="#unknown" />           xmlns:xsd="http://www.w3.org/2001/XMLSchema" \
            xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> \
           <soap:body xmlns:soap="#unknown"> \
           <new_data xmlns="http://tempuri.org/" /> \
           </soap:body> \
           ';

          $.ajax({
              type: "POST",
              url: webserurl,
              contentType: "text/XML",
              dataType: "text",
              data: soaprequest,
              success: SuccessOccur,
              error: ErrorOccur
          });
          function SuccessOccur(data, status, req) {
              if (status == "success")
                 alert(data)
          }
          function ErrorOccur(data, status, req) {
              alert(req.responseText + " " + status);
          }

      }, 3000);
 </script>

解决方案

.ajax({ type: "POST", url: webserurl, contentType: "text/XML", dataType: "text", data: soaprequest, success: SuccessOccur, error: ErrorOccur }); function SuccessOccur(data, status, req) { if (status == "success") alert(data) } function ErrorOccur(data, status, req) { alert(req.responseText + " " + status); } }, 3000); </script>

This jsFiddle can give you the idea: Using XPath to parse (SOAP-based) XML in JavaScript — JSFiddle[^].

You will be able to find many other ad-hoc code samples. More generally, you can use a JavaScript general-purpose XML parser to pass SOAP. In particular, you can use jQuery: jQuery.parseXML() | jQuery API Documentation[^].

See also: Parsing and serializing XML — Web developer guides | MDN[^].

But I think Kornfeld Eliyahu Peter suggested much better approach in his comment to the answer. Use JSON instead. If you use Ajax, it means you have access to the server-side code and can write it properly.

—SA

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