模仿struts:servlet

最新推荐文章于 2024-03-25 16:53:19 发布

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本文介绍了一个Servlet实现的用户操作管理应用，包括添加、删除、修改和查询用户功能，通过请求URI解析来响应不同的操作，并使用不同JSP页面进行结果展示。

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package com.bjpowernode.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.ankangqiao.servlet.UserManager;

@SuppressWarnings("serial")
public class TestServlet extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request, response);
	}

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

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

		String requestUIR = request.getRequestURI();
		System.out.println("requestUIR:" + requestUIR);

		String path = requestUIR.substring(requestUIR.indexOf("/", 1),
				requestUIR.indexOf("."));
		System.out.println("path:" + path);

		String username = request.getParameter("username");

		if (username != null) {
			username = new String(username.getBytes("ISO-8859-1"), "UTF-8");
			UserManager userManager = new UserManager();
			if (path.equals("/Servlet/addUser")) {
				userManager.addUser(username);
				request.getRequestDispatcher("/add_success.jsp").forward(
						request, response);
			} else if (path.equals("/Servlet/deleteUser")) {
				userManager.deleteUser(username);
				request.getRequestDispatcher("/delelte_success.jsp").forward(
						request, response);
			} else if (path.equals("/Servlet/modifyUser")) {
				userManager.modifyUser(username);
				request.getRequestDispatcher("/modify_success.jsp").forward(
						request, response);
			} else if (path.equals("/Servlet/queryUser")) {
				List users = userManager.queryUser(username);
				request.setAttribute("users", users);
				request.getRequestDispatcher("/query_success.jsp").forward(
						request, response);
			} else {
				out.print("访问失败!");
			}

		}

	}

}

<?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">
  <display-name></display-name>	
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
  	<servlet-name>TestServlet</servlet-name>
  	<servlet-class>com.bjpowernode.servlet.TestServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  	<servlet-name>TestServlet</servlet-name>
  	<url-pattern>*.action</url-pattern>
  </servlet-mapping>
</web-app>