創建好的工程目錄如下：

一開始我現在WEB-INF中創建了一個test.jsp但發現tomcat上面運行錯誤

錯誤原因：

在 Eclipse的“包資源管理器(Package Explorer)”檢查文件存放的位置。由於META-INF

WEB-INF文件夾下的內容無法對外發布，所以，如果你引用了帶這兩個目錄的文件，肯定是不允許。

解決辦法：將WEB-INF中的test.jsp拖到WebContent中

再次運行：

二、創建servlet實例

如圖

HelloServlet的代碼如下：

package com.chenjn.www;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* Servlet implementation class HelloServlet
*/
@WebServlet("/HelloServlet")
public class HelloServlet extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public HelloServlet() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.setCharacterEncoding("GBK");
response.getWriter().write("hello world！");
}

/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request,response);
// TODO Auto-generated method stub
}

}

重啟tomcat 服務器運行結果如下：

在Eclipse中創建Dynamic Web Project