Js 调用 WebService心得总结
页面:
<INPUT type="button" value="Button" onclick="getdata()"><br> <span id="div1" class="list"></span> <script language=javascript> setInterval(getdata,1000); //动态定时调用 </script>脚本: <SCRIPT ID="clientEventHandlersJS" LANGUAGE="javascript"> function getdata() { var index=0; docSubmit =new ActiveXObject("Microsoft.XMLDOM"); docSubmit.async = false; docSubmit.load("http://localhost/WebApplication1/Service1.asmx/GetData?maxval=5"); docSubmit.loadXML(docSubmit.xml.replace(/</g,"<").replace(/>/g,">")); var s=""; nodeList=docSubmit.documentElement.getElementsByTagName("ds"); for (i=0;i<nodeList.length;i++) { s=s+nodeList(i).selectSingleNode("KeShimch").text+'<br>'; } div1.innerHtml =""; div1.innerHTML=s; div1.style.visibility="visible"; } </script> //如果返回是个字符串: <SCRIPT ID="clientEventHandlersJS" LANGUAGE="javascript"> function chang() { docSubmit =new ActiveXObject("Microsoft.XMLDOM"); docSubmit.async = false; docSubmit.load("http://localhost/Advertisement/ADService.asmx/GetADCode?ADID=1"); var s=docSubmit.documentElement.text; window.alert(s); td_AD.innerHTML=s; } //setInterval(chang,2000);//间隔执行 </script> // 注意:在fromework1.0和1.1是有区别的,
在1.1的 machine.config (C:\WINNT\Microsoft.NET\Framework\v1.1.4322\CONFIG),默认webservice去除了post,get方法
你可在你的 machine.config 中加上 或者 只在 webServices 项目的 Web.config 的<system.web>里加上:
<webServices> <protocols> <add name="HttpPost" /> <add name="HttpGet" /> </protocols></webServices>否则,在ie地址栏输入 webServices 访问地址串时,提示:请求格式无法识别。
还有docSubmit = new ActiveXObject("MSXML2.DOMDocument"); //1.0
换成
docSubmit =new ActiveXObject("Microsoft.XMLDOM"); //1.1
--------------------------web服务方法:
[WebMethod] public string GetData(string maxval) { BaseClass.DbManagerSql dbm=new BaseClass.DbManagerSql(); string strSql="select * from s_KeShi where Keshidm>"+maxval; DataSet ds=dbm.Query(strSql); return ds.GetXml(); }
返回的xml数据:
<?xml version="1.0" encoding="utf-8" ?> <string xmlns="http://tempuri.org/"> <NewDataSet> <ds> <KeShidm>6</KeShidm> <KeShimch>财务部</KeShimch> </ds> <ds> <KeShidm>7</KeShidm> <KeShimch>政工部</KeShimch> </ds> <ds> <KeShidm>8</KeShidm> <KeShimch>安质部</KeShimch> </ds> <ds> <KeShidm>9</KeShidm> <KeShimch>电管部</KeShimch> </ds> <ds> <KeShidm>10</KeShidm> <KeShimch>运输公司</KeShimch> </ds> <ds> <KeShidm>11</KeShidm> <KeShimch>局长</KeShimch> </ds> <ds> <KeShidm>202</KeShidm> <KeShimch>变电站</KeShimch></ds> </NewDataSet> </string>