[转]几种调用WebService的方法

1．  在JavaScript中调用WebService

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< script language = " javascript " >
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function  PostRequestData(URL,data){
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        var  xmlhttp  =   new  ActiveXObject( " Microsoft.XMLHTTP " );
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       xmlhttp.Open( " POST " ,URL,  false );
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       xmlhttp.SetRequestHeader ( " Content-Type " , " text/xml; charset=utf-8 " );
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       xmlhttp.SetRequestHeader ( " SOAPAction " , " http://tempuri.org/myService/test/isNumner " );
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        try  { 
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              xmlhttp.Send(data); 
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               var  result  =  xmlhttp.status;
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       }
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        catch (ex) {
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               return ( " 0 "   +  ex.description  +   " | "   +  ex.number); 
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       }
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        if (result == 200 ) { 
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               return ( " 1 "   +  xmlhttp.responseText); 
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       }
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       xmlhttp  =   null ;
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}
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function  loadit(value){
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        var  url  =  'http: // localhost/myService/test.asmx';
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        var  data ;
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        var  r;
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       data  =  ' <? xml version = " 1.0 "  encoding = " utf-8 " ?> ';
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       data  =  data  +  ' < 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/ " > ';
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    data  =  data  +  ' < soap:Body > ';
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    data  =  data  +  ' < isNumner xmlns = " http://tempuri.org/myService/test " > ';
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    data  =  data  +  ' < str > ' + value + ' </ str > ';
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    data  =  data  +  ' </ isNumner > ';
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    data  =  data  +  ' </ soap:Body > ';
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    data  =  data  +  ' </ soap:Envelope > ';
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       r = PostRequestData(url,data);
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       document.write(r);                
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}
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loadit(' 5 ');
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</ script >

 还可以使用微软的htc组件来实现，可以到这里下载: 
http://msdn.microsoft.com/workshop/author/webservice/webservice.htc
<script language="javascript">
    function timer(){
        service.useService(" http://localhost/myService/test.asmx?WSDL","test");
        service.test.callService(callback,"isNumner",'gdh');
     }
    
    function callback(res){
        if (!res.error)
            time.innerText=res.value;                
    }
 </script>
 
<div id="service" style="behavior:url(webservice.htc)"></div>
<span id="time"></span>

2. 在Asp中

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< %@LANGUAGE = " VBSCRIPT "  CODEPAGE = " 936 " % >
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< %
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              Dim  strxml 
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         Dim  str       
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         ' 定义soap消息
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        strxml  =   " <?xml version='1.0' encoding='tf-8'?>"
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        strxml  =  strxml  &   " <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/'>"
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        strxml  =  strxml  &   " <soap:Body> "
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              strxml  =  strxml  &   " <isNumner xmlns='http://tempuri.org/myService/test'>"
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        strxml  =  strxml  &   " <str>4</str> "  
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        strxml  =  strxml  &   " </isNumner>"
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              strxml  =  strxml  &   " </soap:Body> "  
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        strxml  =  strxml  &   " </soap:Envelope>"
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         ' 定义一个XML的文档对象，将手写的或者接受的XML内容转换成XML对象
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         ' set x = createobject("Microsoft.DOMDocument")
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         ' 初始化XML对象
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         ' 将手写的SOAP字符串转换为XML对象
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         '  x.loadXML strxml
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         ' 初始化http对象
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         Set  h  =   createobject (  " Microsoft.XMLHTTP " )
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         ' 向指定的URL发送Post消息
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        h.open  " POST " ,  " http://localhost/myService/test.asmx " ,  False
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        h.setRequestHeader  " Content-Type " ,  " text/xml"
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              h.setRequestHeader  " SOAPAction " ,  " http://tempuri.org/myService/test/isNumner"
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        h.send (strxml)
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         While  h.readyState  <>   4
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         Wend
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         ' 显示返回的XML信息
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        str  =  h.responseText
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         ' 将返回的XML信息解析并且显示返回值
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         ' Set x = createobject("MSXML2.DOMDocument")
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         '  x.loadXML str
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         ' str = x.childNodes(1).Text
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         response.write(str)
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% >

 3．在.net中 在.net中调用WebService就方便多了，没有必要自己写soap消息了，以上都是用XMLHTTP来发送WebService请求的，在.net只要添加了web引用，会自动为你创建一个代理类。然后使用代理类就像用自己定义的类一样方便。   在MSDN里也有： ms-help://MS.MSDNQTR.2003FEB.2052/behavior/workshop/author/webservice/reference/methods/callservice.htm 以下是userService和callService方法的详细说明：