几种调用WebService的方法-.NET教程,Web Service开发

1． 在javascript中调用webservice

<script language="javascript">

function postrequestdata(url,data){

var xmlhttp = new activexobject("microsoft.xmlhttp");

xmlhttp.open("post",url, false);

xmlhttp.setrequestheader ("content-type","text/xml; charset=utf-8");

xmlhttp.setrequestheader ("soapaction","http://tempuri.org/myservice/test/isnumner");

try {

xmlhttp.send(data);

var result = xmlhttp.status;

}

catch(ex) {

return("0" + ex.description + "|" + ex.number);

}

if(result==200) {

return("1" + xmlhttp.responsetext);

}

xmlhttp = null;

}

function loadit(value){

var url = http://localhost/myservice/test.asmx;

var data ;

var r;

data = <?xml version="1.0" encoding="utf-8"?>;

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/">;

data = data + <soap:body>;

data = data + <isnumner xmlns="http://tempuri.org/myservice/test">;

data = data + <str>+value+</str>;

data = data + </isnumner>;

data = data + </soap:body>;

data = data + </soap:envelope>;

r=postrequestdata(url,data);

document.write(r);

}

loadit(5);

</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

<%@language="vbscript" codepage="936"%>

<%

dim strxml

dim str

定义soap消息

strxml = "<?xml version=1.0 encoding=tf-8?>"

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/>"

strxml = strxml & "<soap:body> "

strxml = strxml & "<isnumner xmlns=http://tempuri.org/myservice/test>"

strxml = strxml & "<str>4</str>"

strxml = strxml & "</isnumner>"

strxml = strxml & "</soap:body>"

strxml = strxml & "</soap:envelope>"

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

set x = createobject("microsoft.domdocument")

初始化xml对象

将手写的soap字符串转换为xml对象

x.loadxml strxml

初始化http对象

set h = createobject( "microsoft.xmlhttp")

向指定的url发送post消息

h.open "post", "http://localhost/myservice/test.asmx", false

h.setrequestheader "content-type", "text/xml"

h.setrequestheader "soapaction", "http://tempuri.org/myservice/test/isnumner"

h.send (strxml)

while h.readystate <> 4

wend

显示返回的xml信息

str = h.responsetext

将返回的xml信息解析并且显示返回值

set x = createobject("msxml2.domdocument")

x.loadxml str

str = x.childnodes(1).text

response.write(str)

%>

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。