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                        /JAVA遇見HTML——Servlet篇

500錯誤

<%@ page language="java" contentType="text/html; charset=UTF-8"

? ? pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title>Insert title here</title>

</head>

<body>

<h1>

第一個Servlet小例子

</h1>

<a href="servlet/HelloServlet">Get方式請求HelloServlet</a>

</body>

</html>

package servlet;

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 HelloServlet extends HttpServlet {

@Override

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// TODO Auto-generated method stub

System.out.println("處理get()方法。。。");

PrintWriter out =response.getWriter();

out.println("<strong>Hello Servlet!</strong><br>");

}

@Override

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// TODO Auto-generated method stub

System.out.println("處理post()方法。。。");

PrintWriter out =response.getWriter();

response.setContentType("text/html; charset=UTF-8");

out.println("<strong>Hello Servlet!</strong><br>"); }

}

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

? <display-name>MyFirstServlet</display-name>

? <welcome-file-list>

? ? <welcome-file>index.html</welcome-file>

? ? <welcome-file>index.htm</welcome-file>

? ? <welcome-file>index.jsp</welcome-file>

? ? <welcome-file>default.html</welcome-file>

? ? <welcome-file>default.htm</welcome-file>

? ? <welcome-file>default.jsp</welcome-file>

? </welcome-file-list>

? <servlet>

? <servlet-name>HelloServlet</servlet-name>

? <servlet-class>servlet.HelloServtet</servlet-class>