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  • 第十周作业

    图书管理器

数据库设计代码
CREATE TABLE bookmanage(
b_id BIGINT AUTO_INCREMENT PRIMARY KEY NOT NULL,
b_name VARCHAR(40) NOT NULL,
b_author VARCHAR(40) NOT NULL,<br>b_date DATETIME NOT NULL,
b_type INT NOT NULL )ENGINE=INNODB DEFAULT CHARSET=utf8;

    
主界面：
    <%@ page import="com.qkl.bean.BookManage"%>
<%@ page import="com.qkl.dao.BookManageDao"%>
<%@ 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>个人图书管理</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>图书信息</h1>
    <table border="1">
        <tr>
            <td>图书编号</td>
            <td>图书名称</td>
            <td>图书作者</td>
            <td>购买时间</td>
            <td>图书分类</td>
            <td>操作</td>
        </tr>
        <%
            BookManageDao book = new BookManageDao();
            List<BookManage> list = book.selectBookAll();
            for (int i = 0; i < list.size(); i++) {
        %>
        <tr>
            <td><%=list.get(i).getB_id()%></td>
            <td><%=list.get(i).getB_name()%></td>
            <td><%=list.get(i).getB_author()%></td>
            <td><%=list.get(i).getB_time()%></td>
            <td><%int x = list.get(i).getB_type();
                    if (x == 1) {
                %> <label>小说/文摘</label> <%
                    } else if (x == 2) {
                %> <label>计算机/软件</label> <%
                    } else if (x == 3) {
                %> <label>杂项</label> <%
                    }
                %>
            </td>
            <td><a href="del.jsp?b_id=<%=list.get(i).getB_id()%>" onclick="del()">删除</a></td>
        </tr>
        <%
            }
        %>
    </table>
    <a href="newbook.jsp">新增图书信息</a>
</body>
<script type="text/javascript">
function del(){
if(confirm('确定要删除吗？')){
 
}else{
 
}
}
</script>
</html>
添加图书界面
<%@ 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>添加图书信息</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>
    <form action="getnewbook.jsp" onsubmit="return validate_form(this)"
        method="post">
        <table>
            <tr>
                <th>新增图书信息</th>
            </tr>
            <tr>
                <td>图书名称：</td>
                <td><input type="text" name="newbookname">
                </td>
            </tr>
            <tr>
                <td>图书作者：</td>
                <td><input type="text" name="newbookauthor">
                </td>
            </tr>
            <tr>
                <td>购买日期：</td>
                <td><input type="text" name="newbookdate">
                </td>
                <td>yyyy-MM-dd格式</td>
            </tr>
            <tr>
                <td>图书类别：</td>
                <td><select id="select" name="select">
                        <option value="">选择所属分类</option>
                        <option value="1">小说/文摘</option>
                        <option value="2">计算机/软件</option>
                        <option value="3">杂项</option>
                </select>
            </tr>
        </table>
        <input type="submit" value="添加图书">
    </form>
 
    <script type="text/javascript">
function validate_required(field,alerttxt)
{
with (field)
  {
  if (value==null||value=="")
    {alert(alerttxt);return false}
  else {return true}
  }
}
 
function validate_form(thisform)
{
 
var slt=document.getElementById("select");
if(slt.value==""){
alert("请选择分类");
return false;
}
with (thisform)
  {
  if (validate_required(newbookname,"书名不能为空")==false)
    {newbookname.focus();return false}
    if (validate_required(newbookauthor,"作者不能为空")==false)
    {newbookauthor.focus();return false}
    if (validate_required(newbookdate,"时间不能为空")==false)
    {newbookdate.focus();return false}
  }
}
</script>
</body>
</html>
 添加图书内容收集界面
<%@ page import="com.qkl.bean.BookManage"%>
<%@ page import="com.qkl.dao.BookManageDao"%>
<%@ page import="java.util.*"%>
<%@ page import="java.text.*"%>
<%@ 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 'getnewbook.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>
    <%
        request.setCharacterEncoding("utf-8");
        BookManage m = new BookManage();
        String b_name = request.getParameter("newbookname");
        b_name.trim();
        m.setB_name(b_name);
        String b_author = request.getParameter("newbookauthor");
        b_author.trim();
        m.setB_author(b_author);
        String b_date = request.getParameter("newbookdate");
        SimpleDateFormat smt = new SimpleDateFormat("yyyy-MM-dd");
        Date d_datein = smt.parse(b_date);
        m.setB_time(d_datein);
        String b_type = request.getParameter("select");
        int bb_type= Integer.parseInt(b_type);
        m.setB_type(bb_type);
        BookManageDao sd = new BookManageDao();
        if (sd.addbook(m) > 0) {
    %><p>添加成功</p><a href="index.jsp">点击返回主页面</a>
    <%
        } else {
    %>
    <p>输入错误，请重新注册</p>
    <%
        }
    %>
</body>
</html>

    
删除图书内容收集界面 
<%@ page import="com.qkl.bean.BookManage"%>
<%@ page import="com.qkl.dao.BookManageDao"%>
<%@ 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 'del.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>
  <%
  request.setCharacterEncoding("utf-8");
    int b_id=Integer.parseInt(request.getParameter("b_id"));
    BookManageDao id=new BookManageDao();
    id.delbook(b_id);
    request.getRequestDispatcher("index.jsp").forward(request, response);
  %>
     
  </body>
</html>

    
BookManage.java
package com.qkl.bean;
 
import java.util.Date;
 
public class BookManage {
    private int b_id;
    private String b_name;
    private String b_author;
    private Date b_time;
    private int b_type;
    public int getB_id() {
        return b_id;
    }
    public void setB_id(int b_id) {
        this.b_id = b_id;
    }
    public String getB_name() {
        return b_name;
    }
    public void setB_name(String b_name) {
        this.b_name = b_name;
    }
    public String getB_author() {
        return b_author;
    }
    public void setB_author(String b_author) {
        this.b_author = b_author;
    }
    public Date getB_time() {
        return b_time;
    }
    public void setB_time(Date b_time) {
        this.b_time = b_time;
    }
    public int getB_type() {
        return b_type;
    }
    public void setB_type(int b_type) {
        this.b_type = b_type;
    }
    public BookManage(int b_id, String b_name, String b_author, Date b_time,int b_type) {
        super();
        this.b_id = b_id;
        this.b_name = b_name;
        this.b_author = b_author;
        this.b_time = b_time;
        this.b_type = b_type;
    }
    public BookManage() {
        super();
        // TODO Auto-generated constructor stub
    }
     
 
}
BookManageDao.java
package com.qkl.dao;
 
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
 
import com.jjy.bean.BookManage;
 
public class BookManageDao extends BaseDao {
    //显示数据列表
    public List<BookManage> selectBookAll() {
        List<BookManage> list = new ArrayList<BookManage>();
        Connection conn=getConnection();
        String sql  = "SELECT b_id,b_name,b_author,b_date,b_type FROM bookmanage";
        PreparedStatement ps = null;
        ResultSet rs=null;
        try {
             
            ps = conn.prepareStatement(sql);
            rs=ps.executeQuery();
            while(rs.next()) {
                BookManage m = new BookManage();
                m.setB_id(rs.getInt(1));
                m.setB_name(rs.getString(2));
                m.setB_author(rs.getString(3));
                m.setB_time(rs.getDate(4));
                m.setB_type(rs.getInt(5));
                list.add(m);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }finally {
            closeAll(conn,ps,rs);
        }
        return list;
    }
    //增加数据
    public int addbook(BookManage m){
        int i=0;
         
        Connection conn=getConnection();
        String sql="insert into bookmanage(b_name,b_author,b_date,b_type) values(?,?,?,?)";
        PreparedStatement ps=null;
        try {
            ps = conn.prepareStatement(sql);
         
            ps.setString(1, m.getB_name());
            ps.setString(2, m.getB_author());
            ps.setDate(3,new Date(m.getB_time().getTime()));
            ps.setInt(4, m.getB_type());
            i=ps.executeUpdate();
             
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(conn, ps, null);
        }  
        return i;
    }
     
    //删除数据
    public void delbook(int id){
        Connection con=getConnection();
        PreparedStatement ps=null;
        String sql="delete from bookmanage where b_id=?";
        try {
            ps=con.prepareStatement(sql);
            ps.setInt(1, id);
            ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(con, ps, null);
        }
         
         
    }
 
 
}
BaseDao.java
package com.qkl.dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class BaseDao {
    //获取连接
        protected Connection getConnection(){
            Connection conn=null;
                try {
                    Class.forName("com.mysql.jdbc.Driver");
                    // 2.建立连接
                    conn = DriverManager.getConnection(
                            "jdbc:mysql://localhost:3306/jsp", "root", "root");
                } catch (Exception e) {
                    e.printStackTrace();
                }
                return conn;
        }  
         
         
        //关闭连接
        protected void closeAll(Connection conn,PreparedStatement ps,ResultSet rs){    
        try {
            if(rs != null)
                rs.close();
            if(ps != null)
                ps.close();
            if(conn != null)
                conn.close();
             
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
 
}
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  • 原文地址：https://www.cnblogs.com/1774ax/p/14782176.html
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