ajax调用webservice

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<html>
<head>
<title>通过ajax调用WebService服务</title>
<script>
var xhr = new ActiveXObject("Microsoft.XMLHTTP");
function sendMsg(){
var name = document.getElementById('name').value;
//服务的地址
var wsUrl = 'http://192.168.1.1:8080/hello';
//请求体

var soap = '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:q0="http://ws.itcast.cn/"

xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">' +

' <soapenv:Body> <q0:sayHello><arg0>'+name+'</arg0> </q0:sayHello> </soapenv:Body> </soapenv:Envelope>';

//打开连接
xhr.open('POST',wsUrl,true);
//重新设置请求头
xhr.setRequestHeader("Content-Type","text/xml;charset=UTF-8");
//设置回调函数
xhr.onreadystatechange = _back;
//发送请求
xhr.send(soap);
}

function _back(){
if(xhr.readyState == 4){
if(xhr.status == 200){
//alert('调用Webservice成功了');
var ret = xhr.responseXML;
var msg = ret.getElementsByTagName('return')[0];
document.getElementById('showInfo').innerHTML = msg.text;
//alert(msg.text);
}
}
}
</script>
</head>
<body>
<input type="button" value="ajax调用WebService服务" onclick="sendMsg();">
<input type="text" id="name">
<div id="showInfo">
</div>
</body>
</html>

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