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在SOAPCall类里面有request和response两个对象,分别是提交数据和返回数据. 下面是节选SOAPCall类的asyncInvoke方法的一部分,实现request的构造和数据发送(这里是流程,具体实现细节在PendingCall类里面): //callback是PendingCall的实例. callback.encode(); callback.callbackMethod = callbackMethod; // Callback method // Populate parameters callback.setupParams(args); // prepare response object var response = new XML(); response.ignoreWhite = true; response.callback = callback; response._startTimeMark = startTime; callback.response = response; // create the async response mechanism response.onData = function(src) { } // fire message callback.request.sendAndLoad(this.endpointURI, response, "POST"); //------------------------------------------------------------------------------------------- 看到上面的代码,就会豁然开朗,就是使用soap协议,来提交和获取数据.那么,我们就可以很简单的构成一个SOAP 请求.我们看一下soap请求的格式(http://roading.net/WebService/test.asmx?op=say): 下面是一个 SOAP 请求和响应示例。所显示的占位符需要由实际值替换。 POST /WebService/test.asmx HTTP/1.1 Host: roading.net Content-Type: text/xml; charset=utf-8 Content-Length: length SOAPAction: "http://www.roading.net/say" <?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> <say xmlns="http://www.roading.net/"> <str>string</str> </say> </soap:Body> </soap:Envelope> 一个soap请求包括头部和数据. soap请求头部包括: POST /WebService/test.asmx HTTP/1.1 Host: roading.net Content-Type: text/xml; charset=utf-8 Content-Length: length SOAPAction: http://www.roading.net/say URLRequestHeader不支持post,host和Content-Length(ArgumentError: Error #2096: HTTP 请求标头 host 不能通过 ActionScript 设置。),同时也不必要,必须设置的是Content-Type和SOAPAction. // r.requestHeaders.push(new URLRequestHeader("Content-Type", "text/xml;charset=utf-8")); r.requestHeaders.push(new URLRequestHeader("SOAPAction", "http://www.roading.net/say")); // soap请求数据为: <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/"> <say xmlns="http://www.roading.net/"> //调用方法.. 命名空间 <str>hello</str> //参数 </say> </soap:Envelope> 整个的soap请求如上面所示...就可以使用URLLoader和URLRequest类来发送和接收数据了.下面是一个完整的调用WebServices的测试代码(不包括解析接收的数据): //WebService网址(为测试写的例子) http://www.roading.net/WebService/test.asmx import flash.net.*; var soap:Namespace = new Namespace("http://schemas.xmlsoap.org/soap/envelope/"); var r:URLRequest = new URLRequest("http://www.roading.net/WebService/Test.asmx?op=say"); r.method = URLRequestMethod.POST; r.requestHeaders.push(new URLRequestHeader("Content-Type", "text/xml;charset=utf-8")); r.requestHeaders.push(new URLRequestHeader("SOAPAction", "http://www.roading.net/say")); var rXML:XML = <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/> </soap:Envelope> ; rXML.soap::Body.appendChild( <say xmlns="http://www.roading.net/"> // <str>hello</str> // </say> ); r.data = rXML; var l:URLLoader = new URLLoader(); l.dataFormat = URLLoaderDataFormat.TEXT; l.load(r); l.addEventListener("ioError" ,err); l.addEventListener(Event.COMPLETE,xmlLoaded); function xmlLoaded(d) { trace(l.data); t.text = l.data; } function err(e) { trace(e); } (责任编辑：admin) |