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js调用webservice

2012-12-03 17:39 344 查看

Javascript调用Webservice

1. 创建webservice，为了免于落俗我稍稍修改了创建webserice的默认webmethod。

using System;

using System.Web;

using System.Web.Services;

using System.Web.Services.Protocols;

[WebService(Namespace = "http://tempuri.org/")]

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

public class Service : System.Web.Services.WebService

{

public Service () {

//Uncomment the following line if using designed components

//InitializeComponent();

}

[WebMethod]

public string SayHelloTo(string Name) {

return "Hello "+Name;

}

}

2. js调用webservice+xmlhttp的实现部分。

<html>

<title>

Call webservice with javascript and xmlhttp.

</title>

<body>

<script language="javascript">

//Test function with get method.

function RequestByGet(data){

var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

//Webservice location.

var URL="http://localhost:1323/WebSite6/Service.asmx/SayHelloTo?Name=Zach";

xmlhttp.Open("GET",URL, false);

xmlhttp.SetRequestHeader ("Content-Type","text/xml; charset=utf-8");

xmlhttp.SetRequestHeader ("SOAPAction","http://tempuri.org/ SayHelloTo");

xmlhttp.Send(data);

var result = xmlhttp.status;

//OK

if(result==200) {

document.write(xmlhttp.responseText);

}

xmlhttp = null;

}

//Test function with post method

function RequestByPost(value)

{

var data;

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

data = data + '<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"http://www.w3.org/2001/XMLSchema"http://schemas.xmlsoap.org/soap/envelope/">';

data = data + '<soap:Body>';

data = data + '<SayHelloTo xmlns="http://tempuri.org/">';

data = data + '<Name>'+value+'</Name>';

data = data + '</SayHelloTo>';

data = data + '</soap:Body>';

data = data + '</soap:Envelope>';

var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

var URL="http://localhost:1323/WebSite6/Service.asmx";

xmlhttp.Open("POST",URL, false);

xmlhttp.SetRequestHeader ("Content-Type","text/xml; charset=gb2312");

xmlhttp.SetRequestHeader ("SOAPAction","http://tempuri.org/SayHelloTo");

xmlhttp.Send(data);

document.write( xmlhttp.responseText);

}

</Script>

<input type="button" value="CallWebserviceByGet" onClick="RequestByGet(null)">

<input type="button" value="CallWebserviceByPost" onClick="RequestByPost('Zach')">

</body>

</html>

对于使用post方法需要发送的那堆东东可以在webservice的测试页面中找到，自己拼凑加上对应的参数就可以。

注：如果上面在调用时出现 xmlns:xsd=" xmlns:soap=" Request format is unrecognized for URL unexpectedly ending in '/SayHelloTo'这样的错误，则需要在web.config的配置中放入以下内容：

<system.web>

<webServices>

<protocols>

<add name="HttpSoap" />

<add name="HttpPost" />

<add name="HttpGet" />

<add name="Documentation" />

</protocols>

</webServices>

</system.web>

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