1.引入jQuery包
2.编写一个servlet
public class DemoServlet extends HttpServlet {
public void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out.println("上证指数：3560");
out.flush();
out.close();
}
}
3.在web.xml中配置servlet
<servlet>
<servlet-name>DemoServlet</servlet-name>
<servlet-class>servlet.DemoServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DemoServlet</servlet-name>
<url-pattern>/demo.do</url-pattern>
</servlet-mapping>
4.编写index.jsp界面
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript">
$(function(){
$("#showBtn").click(function(){
$.ajax({
url:"/ajax_jQuery/demo.do",
type:"get",
success:function(result){
$("#msg").html(result);
}
});
});
});
</script>
</head>
<body>
<a href="#" id="showBtn">查看上证指数</a>
<span id="msg"></span>
</body>
</html>
5.实现的效果
初始时：
单击后：
