老师看下我哪里错了
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> </head> <body> <input type="text" name="word" placeholder="请输入要查询的单词"> <input type="submit" value="查询"> </body> </html>
package com.imooc.servlet;
import java.io.IOException;
import java.util.HashMap;
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 CheckServlet
*/
@WebServlet("/cs")
public class CheckServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public CheckServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String key=request.getParameter("word");
HashMap<String,String> word=new HashMap<String,String>();
word.put("apple","苹果");
word.put("pear","梨");
word.put("orange","橙子");
response.setContentType("text/html;charset=utf-8");
boolean flag=word.containsKey(key);
if(flag==true) {
request.setAttribute("key", word.get(key));
request.getRequestDispatcher("/success.jsp").forward(request, response);
}else {
HttpSession session=request.getSession();
session.setAttribute("fail", "没有找到对应的单词解释");
request.getRequestDispatcher("/fail.jsp").forward(request, response);
}
}
}<%@ 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>
<%
out.println(request.getAttribute("key"));
%>
</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>
<%
out.println(session.getAttribute("fail"));
%>
</body>
</html>3
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3回答
同学你好，1、404错误，是没有找到对应地址下的文件，这里同学在地址栏中输入CheckWord/index.html没有找到，同学是否是文件名写错了呐，建议同学将自己的目录结构截图贴出，这里老师测试贴出代码，是能够打开这个index.html页面呐。
2、在index.html页面中，注意form表单的提交，否则请求无法正常发送到CheckServlet中，修改建议如下：
如果我的回答解决了你的疑惑，请采纳，祝学习愉快~
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