Jsp+Servlet图书管理系统（Java Web课程设计）

Java课程设计（Jsp+Servlet+Mysql+Tomcat+Eclipse）
项目类型：JAVA WEB项目
用户类型：2个角色（管理员+学生）
主要技术：Jsp+MySQL+Servlet
开发工具：Eclipse
数据库表：5张
项目介绍：通过2种角色使用。
管理员进行管理图书馆内的所有书籍，以及书籍的相关信息。并能够管理学生用户的个人信息，之后管理学生的借书、还书情况。
学生则通过注册登录进行使用。主要进行在线借书和还书的工作。

项目非开源
项目来源：“那条学长”（V）（公）

>回复—— 学生 —— 免费领取源码一份<

另一个是自己开发的图书管理系统【原创开发】
Jsp+Servlet的新闻管理系统【原创开发】
Jsp+Servlet的外卖配送系统/在线点餐系统

1.管理员端功能介绍

1.1登录界面

1.2藏书管理

1.3图书分类管理

1.4借书归还管理

1.5学生管理

1.6发布公告

1.7密码修改

2.学生端功能介绍

2.1账号注册

2.2图书借阅

2.3图书归还

2.4个人资料修改

3.数据库表

4.部分代码讲解

以借阅书籍这个功能的实现为例子。

4.1bookServlet.java

package com.cya.controller;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.cya.pojo.Admin;
import com.cya.dao.AdminDao;
import com.cya.dao.BookDao;

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

    /**
     * @see HttpServlet#HttpServlet()
     */
    public borrowServlet() {
        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.getWriter().append("Served at: ").append(request.getContextPath());
        //设置编码类型
        request.setCharacterEncoding("UTF-8");
        response.setContentType("text/html;charset=UTF-8");
        BookDao bookdao = new BookDao();
        //为了区分借书和还书的功能，设置tip，tip为1，表示借书
        int tip = Integer.parseInt(request.getParameter("tip"));
        if (tip == 1) {
            //获取图书id
            int bid = Integer.parseInt(request.getParameter("bid"));
            HttpSession session = request.getSession();
            Admin admin = new Admin();
            String status=request.getParameter("status");
            String id="";
            if(status.equals("user")) {
            	//获取到存入session的读者id
                id = (String) session.getAttribute("uid");
            }
            else {
            	//获取到存入session的aid读者id
                 id = (String) session.getAttribute("aid");
            }
            
            AdminDao admindao = new AdminDao();
            //通过aid获取到读者的信息
            admin = admindao.get_AidInfo2(id);
            //将借阅记录存入数据表
            bookdao.borrowBook(bid, admin);
            response.sendRedirect("/manage_books/books/user/select.jsp");
        } else {
            //还书功能，获取借阅记录的hid
            int hid = Integer.parseInt(request.getParameter("hid"));
            /**
             * 还书在管理员和读者界面都有，为了区分，设置了show字段，show为1表示读者界面
             */
            int show = Integer.parseInt(request.getParameter("show"));
            //调用还书函数，改变status字段
            bookdao.borrowBook2(hid);
            if (show == 1) {
                response.sendRedirect("/manage_books/books/user/borrow.jsp");
            } else {
                response.sendRedirect("/manage_books/books/admin/admin_borrows.jsp");
            }

        }

    }

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

}

4.2bookDao.java

package com.cya.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Calendar;

import com.cya.pojo.Admin;
import com.cya.pojo.Book;
import com.cya.pojo.History;
import com.cya.util.DBUtil;


/**
 * 关于图书连接数据库的所有操作的类
 */
public class BookDao {

    /**
     * 添加图书信息，传入所有的信息
     *
     * @param card
     * @param name
     * @param type
     * @param autho
     * @param press
     * @param num
     */
    public void addBook(String card, String name, String type, String autho, String press, int num) {
        // TODO Auto-generated method stub
        Connection conn = DBUtil.getConnectDb();
        String sql = "insert  into book(card,name,type,autho,press,num) values(?,?,?,?,?,?)";
        int rs = 0;
        PreparedStatement stm = null;
        try {
            stm = conn.prepareStatement(sql);
            stm.setString(1, card);
            stm.setString(2, name);
            stm.setString(3, type);
            stm.setString(4, autho);
            stm.setString(5, press);
            stm.setInt(6, num);
            rs = stm.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    /**
     * 获取所有的图书信息，返回的是ArrayList数组形式
     *
     * @return
     */
    public ArrayList<Book> get_ListInfo() {
        ArrayList<Book> tag_Array = new ArrayList<Book>();
        Connection conn = DBUtil.getConnectDb();
        String sql = "select * from book";
        PreparedStatement stm = null;
        ResultSet rs = null;
        try {
            stm = conn.prepareStatement(sql);
            rs = stm.executeQuery();
            while (rs.next()) {
                Book tag = new Book();
                tag.setBid(rs.getInt("bid"));
                tag.setName(rs.getString("name"));
                tag.setCard(rs.getString("card"));
                tag.setType(rs.getString("type"));
                tag.setAutho(rs.getString("autho"));
                tag.setPress(rs.getString("press"));
                tag.setNum(rs.getInt("num"));
                tag_Array.add(tag);
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            DBUtil.CloseDB(rs, stm, conn);
        }
        return tag_Array;
    }

    /**
     * 获取借阅记录的全部信息，传入的条件有status，aid，表示搜索正在借阅的，或者已经还书的信息，aid代表当前登录用户
     *
     * @param status
     * @return
     */
    public ArrayList<History> get_HistoryListInfo(int status, String aid) {
        ArrayList<History> tag_Array = new ArrayList<History>();
        Connection conn = DBUtil.getConnectDb();
        String sql = "select * from history where aid='" + aid + "' and status='" + status + "'";
        PreparedStatement stm = null;
        ResultSet rs = null;
        try {
            stm = conn.prepareStatement(sql);
            rs = stm.executeQuery();
            while (rs.next()) {
                History tag = new History();
                tag.setHid(rs.getInt("hid"));
                tag.setAid(rs.getInt("aid"));
                tag.setBid(rs.getInt("bid"));
                tag.setBookname(rs.getString("bookname"));
                tag.setCard(rs.getString("card"));
                tag.setAdminname(rs.getString("adminname"));
                tag.setUsername(rs.getString("username"));
                tag.setBegintime(rs.getString("begintime"));
                tag.setEndtime(rs.getString("endtime"));
                tag.setStatus(rs.getInt("status"));
                tag_Array.add(tag);
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            DBUtil.CloseDB(rs, stm, conn);
        }
        return tag_Array;
    }

    /**
     * 获取借阅记录的全部信息，传入的条件有status，表示搜索正在借阅的，或者已经还书的信息
     *
     * @param status
     * @return
     */
    public ArrayList<History> get_HistoryListInfo2(int status) {
        ArrayList<History> tag_Array = new ArrayList<History>();
        Connection conn = DBUtil.getConnectDb();
        String sql = "select * from history where status='" + status + "'";
        PreparedStatement stm = null;
        ResultSet rs = null;
        try {
            stm = conn.prepareStatement(sql);
            rs = stm.executeQuery();
            while (rs.next()) {
                History tag = new History();
                tag.setHid(rs.getInt("hid"));
                tag.setAid(rs.getInt("aid"));
                tag.setBid(rs.getInt("bid"));
                tag.setBookname(rs.getString("bookname"));
                tag.setCard(rs.getString("card"));
                tag.setAdminname(rs.getString("adminname"));
                tag.setUsername(rs.getString("username"));
                tag.setBegintime(rs.getString("begintime"));
                tag.setEndtime(rs.getString("endtime"));
                tag.setStatus(rs.getInt("status"));
                tag_Array.add(tag);
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            DBUtil.CloseDB(rs, stm, conn);
        }
        return tag_Array;
    }

    /**
     * 获取单个图书的信息，根据传入的bid来查找，返回一个Book数据类型
     *
     * @param bid
     * @return
     */
    public Book get_BookInfo(int bid) {
        Book tag = new Book();
        Connection conn = DBUtil.getConnectDb();
        String sql = "select * from book where bid='" + bid + "'";
        PreparedStatement stm = null;
        ResultSet rs = null;
        try {
            stm = conn.prepareStatement(sql);
            rs = stm.executeQuery();
            while (rs.next()) {
                tag.setBid(rs.getInt("bid"));
                tag.setName(rs.getString("name"));
                tag.setCard(rs.getString("card"));
                tag.setType(rs.getString("type"));
                tag.setAutho(rs.getString("autho"));
                tag.setPress(rs.getString("press"));
                tag.setNum(rs.getInt("num"));
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            DBUtil.CloseDB(rs, stm, conn);
        }
        return tag;
    }

    /**
     * 修改图书的信息，bid作为条件，
     */
    public void updateBook(int bid, String card, String name, String type, String autho, String press, int num) {
        // TODO Auto-generated method stub
        Connection conn = DBUtil.getConnectDb();
        String sql = "update book set name=?,card=?,type=?,autho=?,press=?,num=? where bid=?";
        PreparedStatement stm = null;
        try {
            stm = conn.prepareStatement(sql);
            stm.setString(1, name);
            stm.setString(2, card);
            stm.setString(3, type);
            stm.setString(4, autho);
            stm.setString(5, press);
            stm.setInt(6, num);
            stm.setInt(7, bid);
            stm.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    /**
     * 删除图书信息，根据传入的bid作为条件
     *
     * @param bid
     */
    public void deleteBook(int bid) {
        // TODO Auto-generated method stub
        Connection conn = DBUtil.getConnectDb();
        String sql = "delete from book where bid=?";
        PreparedStatement stm = null;
        try {
            stm = conn.prepareStatement(sql);
            stm.setInt(1, bid);
            stm.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        //System.out.println(uid);

    }

    /**
     * 用户查找图书，根据输入的名称，使用like进行模糊查询，然后返回一个ArrayList数组类型
     *
     * @param name
     * @return
     */
    public ArrayList<Book> getLikeList(String name) {
        // TODO Auto-generated method stub
        ArrayList<Book> tag_Array = new ArrayList<Book>();
        Connection conn = DBUtil.getConnectDb();
        String sql = "select * from book where name like '%" + name + "%'";
        PreparedStatement stm = null;
        ResultSet rs = null;
        try {
            stm = conn.prepareStatement(sql);
            rs = stm.executeQuery();
            while (rs.next()) {
                Book tag = new Book();
                tag.setBid(rs.getInt("bid"));
                tag.setName(rs.getString("name"));
                tag.setCard(rs.getString("card"));
                tag.setType(rs.getString("type"));
                tag.setAutho(rs.getString("autho"));
                tag.setPress(rs.getString("press"));
                tag.setNum(rs.getInt("num"));
                tag_Array.add(tag);
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            DBUtil.CloseDB(rs, stm, conn);
        }
        return tag_Array;
    }

    /**
     * 图书借阅函数，根据传入bid图书id，adminbean当前登录用户的信息，在借阅记录数据表中新插入一条记录
     *
     * @param bid
     * @param adminbean
     */
    public void borrowBook(int bid, Admin adminbean) {
        // TODO Auto-generated method stub
        Book bookbean = new Book();
        bookbean = this.get_BookInfo(bid);
        //生成日期的功能
        Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DATE);
        //生成借阅开始日期
        String begintime = "" + year + "-" + month + "-" + day;
        month = month + 1;
        //生成截止还书日期
        String endtime = "" + year + "-" + month + "-" + day;
        Connection conn = DBUtil.getConnectDb();
        String sql = "insert  into history(aid,bid,card,bookname,adminname,username,begintime,endtime,status) values(?,?,?,?,?,?,?,?,?)";
        int rs = 0;
        PreparedStatement stm = null;
        try {
            stm = conn.prepareStatement(sql);
            stm.setInt(1, adminbean.getAid());
            stm.setInt(2, bookbean.getBid());
            stm.setString(3, bookbean.getCard());
            stm.setString(4, bookbean.getName());
            stm.setString(5, adminbean.getUsername());
            stm.setString(6, adminbean.getName());
            stm.setString(7, begintime);
            stm.setString(8, endtime);
            stm.setInt(9, 1);
            rs = stm.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    /**
     * 还书功能的函数，根据传入的hid借阅记录id，讲status字段的值改为0，并将还书日期改变为当前日期
     *
     * @param hid
     */
    public void borrowBook2(int hid) {
        // TODO Auto-generated method stub
        //生成日期
        Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DATE);
        //生成还书日期
        String endtime = "" + year + "-" + month + "-" + day;
        Connection conn = DBUtil.getConnectDb();
        String sql = "update history set endtime=?,status=? where hid=?";
        PreparedStatement stm = null;
        try {
            stm = conn.prepareStatement(sql);
            stm.setString(1, endtime);
            stm.setInt(2, 0);
            stm.setInt(3, hid);
            stm.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}