写了一个表单提交姓名,返回问候语的例子,但是配置的文件总是不对,大家帮忙看看吧。下面给出 UI 文件 MyHtml.html 文件,这个文件位于项目的根目录下,项目名为01,也就是 01/MyHtml.html servlet这个类, web.xml 文件自己感觉像是文件的路径放错了,返回的错误是 HTTP Status 404 - /01/welcom 另外,更奇怪的是,http://localhost:8080/01/welcom?user=2 这里为什么少了一个 e ?文件列出如下:web.xml<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<welcome-file-list>
<welcome-file>MyHtml.html</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>welcome</servlet-name>
<servlet-class>WelcomeYou</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>welcome</servlet-name>
<url-pattern>/MyHtml</url-pattern>
</servlet-mapping></web-app>
servlet文件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 WelcomeYou extends HttpServlet { @Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
String user = req.getParameter("user");
String welcomeInfo = "Welcome you, " + user;
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
out.println("<html><head><title>");
out.println("Welcome Page");
out.println("</title></head>");
out.println("<body>");
out.println(welcomeInfo);
out.println("</body></html>");
out.close();
} @Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
super.doPost(req, resp);
}}<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>MyHtml.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">--> </head>
<body>
this is
<form action="welcome" method="get">
input your id: <input type="text" name="user"><p>
<input type="submit" value="submit">
</body>
</html>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<welcome-file-list>
<welcome-file>MyHtml.html</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>welcome</servlet-name>
<servlet-class>WelcomeYou</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>welcome</servlet-name>
<url-pattern>/MyHtml</url-pattern>
</servlet-mapping></web-app>
servlet文件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 WelcomeYou extends HttpServlet { @Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
String user = req.getParameter("user");
String welcomeInfo = "Welcome you, " + user;
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
out.println("<html><head><title>");
out.println("Welcome Page");
out.println("</title></head>");
out.println("<body>");
out.println(welcomeInfo);
out.println("</body></html>");
out.close();
} @Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
super.doPost(req, resp);
}}<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>MyHtml.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">--> </head>
<body>
this is
<form action="welcome" method="get">
input your id: <input type="text" name="user"><p>
<input type="submit" value="submit">
</body>
</html>
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<servlet-name>welcome</servlet-name>
<url-pattern>/MyHtml</url-pattern>
</servlet-mapping>
表单里的action应该是MyHtml吧。
welcome是你配置的servlet的名字
表单提交的路径是你配置的servlet的 <url-pattern>/MyHtml</url-pattern>
<servlet-name>welcome</servlet-name>
<url-pattern>/MyHtml</url-pattern>
</servlet-mapping><form action="welcome" method="get">
action写错了啊
没有少e啊 楼主弄错了吧?
因为你这里设的是这个<url-pattern>/MyHtml</url-pattern>