老师，帮我看看这个还有什么需要改进的吗？

来源：6-3 自由编程

Thanatos_

2019-09-12 16:26:13

package com.imooc.servlet.proj;

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;

/**
 * Servlet implementation class ServletProj
 */
@WebServlet("/6-3-proj")
public class ServletProj extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public ServletProj() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// 创建HashMap对象，用来保存数据。
		Map<String, String> MapWords = new HashMap<String, String>();
		response.setContentType("text/html;charset=utf-8");
		MapWords.put("apple", "苹果");
		MapWords.put("hello", "你好");
		MapWords.put("your", "你的");
		// 获得用户输入的单词
		String words = request.getParameter("words");
		boolean flag = false;
		String output = null;
		// 判断单词是否存在
		if(MapWords.containsKey(words)) {
			output = MapWords.get(words);
			request.setAttribute("output", output);
			request.getRequestDispatcher("/success.jsp").forward(request, response);
		} else {
			output = "没有找到对应的单词解释";
			HttpSession session = request.getSession();
			session.setAttribute("output", output);
			response.sendRedirect("/servlet-advanced/fail.jsp");
		}
		
		
	}

	/**
	 * @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);
	}

}

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>6-3-Proj</title>
</head>
<body>
	<form action="/servlet-advanced/6-3-proj">
		<input placeholder="请输入要查询的单词" name="words" >
		<input type="submit" value="查询" >
	</form>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>success</title>
</head>
<body>
	<%
		String output = (String)request.getAttribute("output");
		out.println("<h2 style='color:blue'>" + output + "</h2>");
	%>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>fail</title>
</head>
<body>
	<%
		String output = (String)session.getAttribute("output");
		out.println("<h2 style='color:red'>" + output + "</h2>");
	%>
</body>
</html>

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