jsp怎么调用servlet

互联网 19-5-11

jsp调用servlet的方法：首先在JS里面写一个调用servlet的事件；然后利用“”标签的“onload”调用这个事件，来实现jsp页面调用servlett即可。

本篇文章使用方法：先在JS里面写一个调用servlet的事件（可以利用ajax），然后利用<body>标签的onload调用这个事件。

来进行jsp页面调用servlet的目的。

推荐课程：Java教程。

代码如下：

jsp文件代码如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"     pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title>         <script type="text/javascript" src="http://www.daimajiayuan.com/download/jquery/jquery-1.10.2.min.js"></script>           <script type="text/javascript" src="http://cdn.bootcss.com/bootstrap-select/2.0.0-beta1/js/bootstrap-select.js"></script>             <link rel="stylesheet" type="text/css" href="http://cdn.bootcss.com/bootstrap-select/2.0.0-beta1/css/bootstrap-select.css">                                    <!-- 3.0 -->           <link href="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet">           <script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>                              <!-- 2.3.2           <link href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet">           <script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.js"></script>           -->           <script type="text/javascript">   			function a(){ 				$.ajax({               		url:"LoaddataServlet",//servlet文件的名称             		type:"GET",             		success:function(e){             			alert("servlet调用成功！");             		}             	}); 				 			}         </script>   </head> <body onload="a()"> </body> </html>

package com.servlet;  import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;  /**  * Servlet implementation class LoaddataServlet  */ @WebServlet(urlPatterns = "/LoaddataServlet",loadOnStartup = 1) public class LoaddataServlet extends HttpServlet { 	private static final long serialVersionUID = 1L;             /**      * @see HttpServlet#HttpServlet()      */     public LoaddataServlet() {         super();         // TODO Auto-generated constructor stub     }  	/** 	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) 	 */ 	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 		// TODO Auto-generated method stub 		response.getWriter().append("Served at: ").append(request.getContextPath()); 	}  	/** 	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) 	 */ 	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 		// TODO Auto-generated method stub 		doGet(request, response); 	}  }