Ajax代码可在IE9中使用，但不能在其他浏览器中使用 [英] Ajax Code works in IE9 but nor works in other browser

问题描述

我正在尝试通过Java脚本调用Web服务，它与IE 9兼容，但不适用于其他浏览器.请帮助我解决问题

Hi ,
I am trying to invoke web service via java script It works great with IE 9 but not works on other browsers Please help me to fix the issue

<script type="text/javascript" language="javascript">
        var xmlHttp;
        function SoapCall() {

            // creatng the xmlHttp object
            if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
                xmlHttp = new XMLHttpRequest();
            }
            else {// code for IE6, IE5
                xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            // Calling the web service using post and true means asynchronous call
            xmlHttp.open("post", "http://www.webservicex.net/CurrencyConvertor.asmx", true);
            // Setting the request header to let the web service identify the soap request we would be sending

            xmlHttp.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
            xmlHttp.setRequestHeader("Origin", "http://www.webserviceX.NET");
            xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

           // xmlHttp.setRequestHeader("Access-Control-Allow-Origin", "http://172.27.47.144");
            xmlHttp.setRequestHeader("SOAPAction", "http://www.webserviceX.NET/ConversionRate");

            var soapRequest = '<?xml version="1.0" encoding="utf-16"?>' +
'<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">' +
  '<soap:Body>' +
    '<ConversionRate xmlns="http://www.webserviceX.NET/">' +
      '<FromCurrency>USD</FromCurrency>' +
      '<ToCurrency>INR</ToCurrency>' +
    '</ConversionRate>' +
  '</soap:Body>' +
'</soap:Envelope>';


            xmlHttp.onreadystatechange = function () {
                if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {
                    alert(xmlHttp.responseText);
                }
            }
            xmlHttp.send(soapRequest);


        }
    </script>

推荐答案

如果这在其他浏览器中不起作用，则您的SVC似乎已经支持此功能，但是请确保使用Fiddler2进行查看发生了什么事.

Access-Control-Allow-Origin标头用于请求的资源，而不用于请求该资源的页面.

If this doesn''t work in the other browsers , then your SVC seems to already be supporting this, but to be sure, use Fiddler2 to see what is going on.

The Access-Control-Allow-Origin header is used on the resource being requested, not on the page requesting it.

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