Js 调用 WebService 实例

Html页面代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Js调用WebService</title>
    <script type="text/javascript">
        function RequestWebService() {
            //这是我们在第一步中创建的Web服务的地址
            var URL = "http://192.168.210.51:8012/Service.asmx";
            var fun = "getAllData";
            
            //在这处我们拼接
            var data;
            data = '<?xml version="1.0" encoding="utf-8"?>';
            data = data + '<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">';
            data = data + '<soap12:Body>';
            data = data + '<' + fun + ' xmlns="http://tempuri.org/" >';
            data = data + '<view>V_Gis_Mid_WasteWaterYearData</view>'; 
            data = data + '<condition>EnterpriseCode = 520100000238</condition>'; 
            data = data + '</' + fun + '>'; 
            data = data + '</soap12:Body>';
            data = data + '</soap12:Envelope>';
            
            //创建异步对象
            var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
            xmlhttp.Open("POST", URL, false);
            xmlhttp.SetRequestHeader("Content-Type", "application/soap+xml");
            xmlhttp.Send(data);

            document.getElementById("data").innerHTML = xmlhttp.responseText;
        }      
        
    </script>
</head>
<body>
    <div>
        <input id="One" type="button" value="JsCallWebService" onclick="RequestWebService()" />
    </div>
    <div id="data">
    </div>
</body>
</html>