Ajax+Struts测试实例

and4walker · 发表于 2013-2-6 08:39:30

JSP页面：
<%@ page contentType="text/html; charset=GBK" %>
<script language="javascript">
var xmlHttp;
function createXMLHttpRequest() {
if (window.ActiveXObject) {
      xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
} else if (window.XMLHttpRequest) {
      xmlHttp = new XMLHttpRequest();
}
}

function testName(){
   createXMLHttpRequest();
   xmlHttp.onreadystatechange = callBack;
   xmlHttp.open('POST', '/peam/opOpNote.do?method=add', true);
   xmlHttp.send(null);
}

function callBack() {
var view=document.getElementById("view");
if(xmlHttp.readyState == 4) {
   if(xmlHttp.status == 200) {
      if(xmlHttp.responseText==1){
         view.innerHTML='该用户名已经被使用';
      }else{
         view.innerHTML='该用户名含有非法字符！';
      }
   }
}
}
</script>

<html>
<head>
<title>
ajax
</title>
</head>
<body bgcolor="#ffffff">
<h1>
<input name="username" type="text" maxlength="20" />
<input id="button" name="button" type="button" value="检测帐号"  />
<div id="view"></div>
</h1>
</body>
</html>

Action.java文件：
public ActionForward add(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws java.lang.Exception {
PrintWriter out = response.getWriter();
out.print(1);
return null;//ajax取得都是字符的输出。如果数据量大的话，还可以用xml来发送和接受

}

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Ajax+Struts测试实例

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