分享ajax的一个小例子（代码）

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2013-04 ( 12)
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ajax

ajax html

ajax.jsp代码
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> New Document </title>
<script type="text/javascript">

</script>
</head>
<body>
<input type="submit" value="click this button" onclick="ajaxSubmit();">
<input type="text" id="v1" name="num1">
<input type="text" id="v2" name="num2">
<div id="divt" class="">
</div>
</body>
</html>

AjaxServlet.java

public class AjaxServlet extends HttpServlet
{
protected void doGet(HttpServletRequest req,HttpServletResponse resp)
throws ServletException,IOException
{
PrintWriter out = resp.getWriter();

System.out.println("get or post invoked");
resp.setHeader("pragma","no-cache");
resp.setHeader("cache-control","no-cache");//无缓存

String value1 = req.getParameter("num1");
String value2 = req.getParameter("num2");

String value3 = String.valueOf(Interger.valueOf(value1)+Interger.valueOf(value2));
try
{
Thread.sleep(3000);//延迟3s
}
catch (InterruptedException e)
{
e.printStackTrace();
}
out.println(value3);
out.flush();
}

protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException,IOException
{
this.doGet(req,resp);
}
}

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