ajax调用webservice-优快云博客

本文介绍了一种通过Ajax调用WebService的方法，演示了如何构建SOAP请求并解析响应。具体包括设置请求头、定义请求体及处理返回结果等关键步骤。

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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://192.168.1.100:6789/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="发送SOAP请求" onclick="sendMsg();">
<input type="text" id="name">
<div id="showInfo">
</div>
</body>
</html>