【JSP开发】JSP的forward标签使用

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1.跳转功能的实现

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>        <title>My JSP 'Jsp5.jsp' starting page</title>  </head>    <body>   <%     pageContext.forward("/index.jsp");    %>  </body></html>

2.跳转的时候带参数:

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>     <title>My JSP 'Jsp6.jsp' starting page</title>  </head>    <body>     <!--    //测试时把下面的代码删除    <jsp:forward page="/index.jsp"></jsp:forward>        <jsp:include page="/public/head.jsp"></jsp:include>  //与PageContext.include()一样是动态包含       -->      <jsp:forward page="/ServletDemo1">        <jsp:param name="data" value="XXX"></jsp:param>   </jsp:forward>      </body></html>

ServletDemo1:

import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class ServletDemo1 extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("UTF-8");        response.setContentType("text/html;charset=UTF-8");        PrintWriter out=response.getWriter();                String data=request.getParameter("data");        out.write("JSP传过来的数据是：");        out.write(data);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doGet(request,response);}}

最后在Servlet上拿到jsp文件跳转时传过来的参数。

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