简单的MVC格式

[其他]代码库
Demo.zip(免费下载)[0 次下载]
dairy.zip(免费下载)[0 次下载]
==============================前台界面===============================
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
     
    <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>
   
  <body>
  <div align="center">
       <input type="button" onclick="window.location.href('jsp/addmessage.jsp')" value="添加日记">
       <input type="button" onclick="window.location.href('ListMessageServlet.action')" value="查询日记">
       </div>
  </body>
</html>
================================web.xml==========================================
<?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>Demo</display-name>
  <welcome-file-list>
    <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>AddMessageServlet</servlet-name>
  <servlet-class>fengke.mvc.servlet.AddMessageServlet</servlet-class>
  </servlet>
  <servlet>
  <servlet-name>ListMessageServlet</servlet-name>
  <servlet-class>fengke.mvc.servlet.ListMessageServlet</servlet-class>
  </servlet>
   
 
  <servlet-mapping>
  <servlet-name>AddMessageServlet</servlet-name>
  <url-pattern>/AddMessageServlet.action</url-pattern>
  </servlet-mapping>
   
  <servlet-mapping>
  <servlet-name>ListMessageServlet</servlet-name>
  <url-pattern>/ListMessageServlet.action</url-pattern>
  </servlet-mapping>
   
   
   
</web-app>
==============================前台界面==================================================
<%@ page language="java" import="java.util.*,fengke.mvc.vo.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
     
    <title>My JSP 'listmessage.jsp' starting page</title>
     
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
 
  </head>
   
  <body>
    <h1 align="center">查询日记</h1>
     
    <table align="center">
    <form action="AddMessageServlet.action">
              <tr>
              <th>序号</th>
              <th>日期</th>
              <th>简介</th>
              <th>内容</th>
              </tr>    
              <%  List<Message> list=(List<Message>)request.getAttribute("list"); 
                 for(Message mg:list){
              %>
               
              <tr>
              <td><input type="text" name="id" value="<%=mg.getId() %>" ></td>
              <td><input type="text" name="time" value="<%=mg.getTime() %>"></td>
              <td ><input type="text" name="infor" value="<%=mg.getInfor() %>"></td>
              <td ><input type="text" name="message" value="<%=mg.getMessage() %>"></td>
              </tr>
              <%} %>
              <tr>
              <td colspan="2"><input type="submit" align="middle" value="添加"></td>
              <td colspan="2"><input type="reset" align="middle" value="重置"></td>
              </tr>
               
       </form>
    </table>
  </body>
</html>
 
 
====================================前台界面=====================================
<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
     
    <title>My JSP 'addmessage.jsp' starting page</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
 
  </head>
   
  <body>
    <h1 align="center">添加日记</h1>
     
    <table align="center">
    <form action="AddMessageServlet.action">
              <tr>
              <th>日期</th>
              <th>简介</th>
              <th colspan="2">内容</th>
              </tr>    
               
              <tr>
              <td><input type="text" name="time" ></td>
              <td><input type="text" name="infor" ></td>
              <td colspan="2"><input type="text" name="message" ></td>
              </tr>
               
              <tr>
              <td colspan="2"><input type="submit" align="middle" value="添加"></td>
              <td colspan="2"><input type="reset" align="middle" value="重置"></td>
              </tr>
               
       </form>
    </table>
  </body>
</html>
==============================servlet   控制层===================================
package fengke.mvc.servlet;
 
import java.io.IOException;
import java.sql.Date;
 
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import fengke.mvc.service.MessageService;
import fengke.mvc.vo.Message;
 
/**
 * 控制层
 * 
 * @author 锋客 添加日记信息
 */
public class AddMessageServlet extends HttpServlet {
 
    /**
     * 1.接收前台信息 2.将前台信息传入到逻辑层中
     */
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        // 接收前台信息
        req.setCharacterEncoding("utf-8");
        resp.setCharacterEncoding("utf-8");
        /*
         * parameter与attribute的区别：
         * 
         *String time=(String) req.getAttribute("time");
         * String infor=(String) req.getAttribute("infor");
         * String message=(String) req.getAttribute("message");
        */
        //接收时间信息
        String time =new String(req.getParameter("time").getBytes("ISO8859-1"),"utf-8");
        //接收简介
        String infor = new String(req.getParameter("infor").getBytes("ISO8859-1"),"utf-8");
        //接收内容
        String message = new String(req.getParameter("message").getBytes("ISO8859-1"),"utf-8");
        // 检查是否成功接收
        System.out.println(time + " " + infor + " " + message);
        //创建一个AddMessageService对象，实现数据传输
        MessageService addMessage = new MessageService();
        //实例化一个message对象，保存信息，注意包：java.sql.Date
        Date date=Date.valueOf(time);
        Message mesg = new Message(1,date,infor,message);
        addMessage.addMessage(mesg);
        //跳转
        resp.sendRedirect("index.jsp");
         
 
    }
 
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        //使其调用doPost方法
        this.doPost(req, resp);
    }
     
 
}
==============================servlet   控制层================================================
package fengke.mvc.servlet;
 
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.w3c.dom.ls.LSInput;
import fengke.mvc.service.MessageService;
import fengke.mvc.vo.Message;
/**
 * 查询所有日记信息
 * @author 锋客
 *
 */
public class ListMessageServlet extends HttpServlet{
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        //设置格式
        req.setCharacterEncoding("utf-8");
        resp.setCharacterEncoding("utf-8");
        //创建service对象
        MessageService listMessage = new MessageService();
        List<Message> list = listMessage.listAll();
        //向前台传值
        req.setAttribute("list", list);
        //跳转
        req.getRequestDispatcher("jsp/listmessage.jsp").forward(req, resp);
    }
     
     
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
     
        this.doPost(req, resp);
    }
 
}
 
 
=================================service   逻辑层=============================================
package fengke.mvc.service;
 
import java.sql.Date;
import java.util.List;
 
import fengke.mvc.dao.MessageDao;
import fengke.mvc.vo.Message;
 
/**
 * 逻辑控制层
 * @author 锋客
 * 内容：将信息传入到MessageDao中
 */
 
public class MessageService {
     
    //添加日记信息（需要传入一个Message对象）
    public void addMessage(Message message){
        MessageDao dao = new MessageDao();
        dao.addMessage(message.getId(), message.getTime(), message.getInfor(), message.getMessage());
         
    }
    /*
     * 测试service层到dao层以及db层，是否成功搭建
     * 
    * public static void main(String[] args) {
    *   //包：java.sql.Date;
    *   Date date=Date.valueOf("2012-02-01");
    *   System.out.println(date);
    *   Message mesg=new Message(2,date,"约会","小李");
    *   AddMessageService addMessageService=new AddMessageService();
    *   addMessageService.addMessage(mesg);
    *   }
    *
    */
     
    /**
     * 查询所有信息
     * @return
     * 内容：
     * 通过调用dao层，查找数据库中的信息
     * 
     */
    public List<Message> listAll(){
        MessageDao dao = new MessageDao();
        List<Message> list = dao.listMessage();
        return list;
    }
 
}
==============================jdbc   获得链接=============================================
package fengke.mvc.db;
 
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
/**
 * 获得链接
 * @author 锋客
 * 创建与数据库的链接
 */
public class Jdbc {
    /**
     * userName  用户名
     * passWord  密码
     * url       地址（必须记）
     * con       链接
     */
    static String userName="root";
    static String passWord="root";
    static String url="jdbc:mysql://127.0.0.1:3309/demo";
    static Connection con=null;
     
    static{
        try {
            Class.forName("com.mysql.jdbc.Driver");
            con=DriverManager.getConnection(url, userName, passWord);
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
     
    public static Connection getConnection(){
        //检测是否正确获得链接
        //System.out.println(con);
        return con;
         
    }
     
 
}
============================dao    操作层=============================================
package fengke.mvc.dao;
 
import java.sql.Connection;
import java.sql.Date;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
 
import fengke.mvc.db.Jdbc;
import fengke.mvc.vo.Message;
/**
 * 对dairy表的操作
 * @author 锋客
 *
 */
public class MessageDao {
    private Jdbc jdbc=new Jdbc();
    /*
     * 添加日记信息：
     * 通过获得链接，将信息传入到数据库中
     * 
     */
    public void addMessage(int id, Date time, String infor, String message){
        Connection con = jdbc.getConnection();
        //防止sql注入
        String sql="insert into dairy(time,infor,message)values(?,?,?)";
        try {
            PreparedStatement ps=con.prepareStatement(sql);
            ps.setDate(1, time);
            ps.setString(2, infor);
            ps.setString(3, message);
            ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
         
    }
     
    public List<Message> listMessage(){
        Connection con = jdbc.getConnection();
        //查询语句
        String sql="select id,time,infor,message from dairy";
        //接收信息
        List<Message> list=new ArrayList<Message>();
        /*创建Message对象
         * Message mg=new Message();
         * 不能放在while之外，当使用上述方式创建对象时，内存地址给定，
         * list中的所有对象都指向同一个，最后一个
         */
         
        try {
            PreparedStatement ps=con.prepareStatement(sql);
            ResultSet rs = ps.executeQuery();
            while(rs.next()){
                //注意位置（对引用的理解）
                Message mg=new Message();
                //设置mg对象属性
                mg.setId(rs.getInt(1));
                mg.setTime(rs.getDate(2));
                mg.setInfor(rs.getString(3));
                mg.setMessage(rs.getString(4));
                list.add(mg);
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return list;
         
    }
   /*  
    * 测试：是否可以查询到结果集
    *public static void main(String[] args) {
    *   MessageDao dao = new MessageDao();
    *   List<Message> list = dao.listMessage();
    *   for(Message mg:list){
    *   System.out.println(mg.getId()+"   "+mg.getTime()+"    "+mg.getInfor()+"    "+mg.getMessage());
    *   
    *}
    *}
    */
}
===============================vo  实体类===============================================
package fengke.mvc.vo;
 
import java.sql.Date;
import java.sql.Time;
 
/**
 * 实体层
 * @author 锋客
 * 用于简化数据传输
 */
public class Message {
    /*
     * id: 主键
     * time：时间
     * infor：简介
     * message：详细信息
     */
    private int id;
    private Date time ;
    private String infor ;
    private String message;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public Date getTime() {
        return time;
    }
    public void setTime(Date time) {
        this.time = time;
    }
    public String getInfor() {
        return infor;
    }
    public void setInfor(String infor) {
        this.infor = infor;
    }
    public String getMessage() {
        return message;
    }
    public void setMessage(String message) {
        this.message = message;
    }
    public Message() {
        super();
        // TODO Auto-generated constructor stub
    }
    public Message(int id, Date time, String infor, String message) {
        super();
        this.id = id;
        this.time = time;
        this.infor = infor;
        this.message = message;
    }
     
 
}
===================================结束================================
[源代码打包下载]
Demo.zip(免费下载)[0 次下载]
dairy.zip(免费下载)[0 次下载]
用户注册

用户登录

发表随想

该用户最新代码

编程随想

[其他]代码库

[源代码打包下载]

网友评论 (发表评论)

发表评论：

评论须知：

扫码下载

输入口令后可复制整站源码
