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好吧，所以之前我问过... SOAP Prototype AJAX SOAPAction 标头问题（不幸的是，无法超链接，“2”链接的代表不足...见下文）

从来没有成功过。我认为它与原型有关，它将返回一个 0 作为 onSuccess。我无法弄清楚 Content-type utf-8 格式。现在，如果我回到直接的 javascript 并使用 xmlhttprequest

<html xmlns="http://www.w3.org/1999/xhtml">


    function getUVIndex() {
        // In Firefox, we must ask the user to grant the privileges we need to run.
        // We need special privileges because we're talking to a web server other
        // than the one that served the document that contains this script. UniversalXPConnect
        // allows us to make an XMLHttpRequest to the server, and
        // UniversalBrowserRead allows us to look at its response.
        // In IE, the user must instead enable "Access data sources across domains"
        // in the Tools->Internet Options->Security dialog.
        if (typeof netscape != "undefined") {
            netscape.security.PrivilegeManager.
                    enablePrivilege("UniversalXPConnect UniversalBrowserRead");
        }
        // Create an XMLHttpRequest to issue the SOAP request. This is a utility
        // function defined in the last chapter.
        var request = new XMLHttpRequest();
        // We're going to be POSTing to this URL and want a synchronous response
        request.open("POST", "http://iaspub.epa.gov/uvindexalert/services/UVIndexAlertPort?wsdl", false);

        request.onreadystatechange=function() {
                if (request.readyState==4) {
                    var index = request.responseXML.getElementByTagName('index')[0].firstChild.data;
                    alert(request.responseText);
                }
            }
        // Set some headers: the body of this POST request is XML
        request.setRequestHeader("Content-Type", "text/xml");
        // This header is a required part of the SOAP protocol
        request.setRequestHeader("SOAPAction", '""');
        // Now send an XML-formatted SOAP request to the server
        request.send(               
            '<?xml version="1.0" encoding="utf-8"?>' +
            '<soap:Envelope' +
            ' xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"' +
            ' xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"' +
            ' xmlns:tns="urn:uvindexalert" xmlns:types="urn:uvindexalert/encodedTypes"' +
            ' xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"' +
            ' xmlns:xsd="http://www.w3.org/2001/XMLSchema">' +
            '  <soap:Body soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">' +
            '    <tns:getUVIndexAlertByZipCode>' +
            '       <in0 xsi:type="xsd:string">12306</in0>' +
            '   </tns:getUVIndexAlertByZipCode>' +
            '  </soap:Body>' +
            '</soap:Envelope>'

            );
        // If we got an HTTP error, throw an exception
        if (request.status != 200) throw request.statusText;

        //return request.responseXML.childNodes[0].childNodes[1].childNodes[3].childNodes[5].textContent;
    }

    getUVIndex();
</script>

这永远不会调用 onreadystatechange。如果取消注释返回 request.responseXML.childNodes[0].childNodes[1].childNodes[3].childNodes[5].textContent;

它将检索所需的值，如果您在 Firebug 中，您将看到 readyState == 4 和 status == 200（不是我检查的）。我通常不需要被勺子喂食，但我只是不明白为什么我没有从听众那里得到我需要的值，或者为什么它从来没有被调用过。此外，这并不重要，但我正在批准 Firefox 上的跨域请求，它确实适用于移动设备，因此呼叫不需要确认跨域，它会自动执行此操作。

我希望有人可以看看这个，看看我忽略了什么。谢谢！

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1 回答 1

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onreadystatechange 只会对服务器的异步请求调用，您的代码正在发送同步请求。

将 open 调用的第三个参数设置为 true（或删除第三个参数，默认为 true）。

request.open("POST", "http://iaspub.epa.gov/uvindexalert/services/UVIndexAlertPort?wsdl", true);

http://msdn.microsoft.com/en-us/library/ms536648(VS.85).aspx

于 2010-02-26T03:56:48.793 回答