老师看看还有什么需要修改的吗???
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> </head> <body> <form action="/servlet_advanced/iq" method="post"> <input name="name" placeholder="请输入你要查询的单词"> <input type="submit" value="查询"> </form> </body> </html>
package com.imooc.servlet.test; import java.io.IOException; import java.util.HashMap; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import javax.websocket.Session; /** * Servlet implementation class InquireServlet */ @WebServlet("/iq") public class InquireServlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public InquireServlet() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Map<String, String> map=new HashMap<String, String>(); map.put("apple", "苹果"); map.put("banana", "香蕉"); map.put("peach", "桃子"); String name= request.getParameter("name"); if(map.containsKey(name)) { request.setAttribute("name", map.get(name)); request.getRequestDispatcher("/inquire/success.jsp").forward(request, response); }else { HttpSession session=request.getSession(); session.setAttribute("name", "没有找到对应的单词解释"); response.sendRedirect("/servlet_advanced/inquire/fail.jsp"); } } }
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> </head> <body> <% String name=(String) request.getAttribute("name"); out.println("<h1>"+name+"</h1>"); %> </body> </html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> </head> <body> <% String name=(String)session.getAttribute("name"); out.println("<h1 style='color:red'>"+name+"</h1>"); %> </body> </html>
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慕尼黑7895541
2019-03-20 15:43:11
为什么你请求转发会到成功页面会改变地址栏中的url?
chrismorgen
2019-03-04 15:01:58
效果完成的很棒,加油,祝学习愉快~
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