JavaWeb期末大作业——图书管理系统

目录

一、系统介绍

1.开发的环境

2.本系统实现的功能

3.数据库用到的表

4.工程截图

二、系统展示

1.登录页面

2.注册页面

3.管理员主页面

​编辑 

4. 用户主页面

 5.图书管理页面（管理员）

6.读者管理页面（管理员）

​编辑 7.图书分类管理页面（管理员）

8.图书借阅管理页面（管理员）

 9.图书归还信息页面（管理员）

10.图书日志查询（管理员）

​编辑

11. 图书借阅页面（用户）

12.还书页面（用户）

​编辑 13.借阅历史页面（用户）

 三、部分代码展示

AdminDao.java

 LoginServlet.java

 RegisterServlet.java

 BookBean.java

 AdminServlet.java 

四、源码

点击以下链接（内含数据库文件——books.sql）：

五、备注 

六、祝福

---

一、系统介绍

1.开发的环境

开发工具：eclipse 2022

JDK版本：1.8

数据库：MySQL 5.5

数据库管理软件：Navicat 15.0.27

服务器：apach-tomcat-9.0.68

2.本系统实现的功能

管理员功能：登陆系统、用户信息的增删改查、图书的增删改查、图书分类的增删改查、图书日志查询、图书归还。

用户功能：登陆系统、查阅图书、借阅和归还图书、查询借阅记录

3.数据库用到的表

admin、book、booktype、history

4.工程截图

 

二、系统展示

1.登录页面

2.注册页面

 

3.管理员主页面

 

4. 用户主页面

 5.图书管理页面（管理员）

6.读者管理页面（管理员）

 7.图书分类管理页面（管理员）

8.图书借阅管理页面（管理员）

 9.图书归还信息页面（管理员）

10.图书日志查询（管理员）

11. 图书借阅页面（用户）

12.还书页面（用户）

 13.借阅历史页面（用户）

 三、部分代码展示

AdminDao.java

package com.hry.dao;

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

import com.hry.bean.AdminBean;
import com.hry.dbUtils.DbUtil;



public class AdminDao {

	/**
	 * 登录验证功能，传入用户名和密码，在数据库中查找，如果找到了，返回true，没找到则返回false
	 * username、password
	 */
	public boolean Login_verify(String username,String password){
		//连接数据库
		DbUtil dbUtil=new DbUtil();
		Connection conn = dbUtil.getConn();
		//sql语句
		String sql = "select * from admin where username='"+username+"' and password='"+password+"'";
		PreparedStatement stm = null;
		ResultSet rs = null;
		try {
			//预编译SQL，减少sql执行
			stm = conn.prepareStatement(sql);
			rs = stm.executeQuery();
			if(rs.next()){
				return true;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		finally {
			DbUtil.CloseDB(rs, stm, conn);
		}
		return false;
	}
	/**
	 * 注册账号的函数，传入账号，密码，姓名，邮箱，手机号，借阅天数，可借阅数
	 *  username,  password,  name,  email,  phone, lend_num, max_num
	 */
	public void Register(String username, String password, String name, String email, String phone,int lend_num,int max_num) {
		// TODO Auto-generated method stub
		//连接数据库
		        DbUtil dbUtil=new DbUtil();
				Connection conn = dbUtil.getConn();
				//sql语句
				String sql = "insert  into admin(status,username,password,name,email,phone,lend_num,max_num) values(?,?,?,?,?,?,?,?)";
				int rs = 0;
				PreparedStatement stm = null;
				try {
					//预编译SQL，减少sql执行
					stm = conn.prepareStatement(sql);
					//传参
					stm.setInt(1, 1);
					stm.setString(2, username);
					stm.setString(3, password);
					stm.setString(4, name);
					stm.setString(5, email);
					stm.setString(6, phone);
					stm.setInt(7, lend_num);//借阅天数
					stm.setInt(8, max_num);//可借阅数
					//执行更新
					rs = stm.executeUpdate();
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
	}
	/**
	 * 根据传入的账号，密码，来查找对应的读者信息，返回一个AdminBean类型，
	 * 
	 */
	public AdminBean getAdminInfo(String username, String password) {
		// TODO Auto-generated method stub
		AdminBean adminbean = new AdminBean();
		DbUtil dbUtil=new DbUtil();
		Connection conn = dbUtil.getConn();
		String sql = "select * from admin where username='"+username+"' and password='"+password+"'";
		PreparedStatement stm = null;
		ResultSet rs = null;
		try {
			//预编译SQL，减少sql执行
			stm = conn.prepareStatement(sql);
			//执行查询
			rs = stm.executeQuery();
			if(rs.next()){
				//传参
				adminbean.setAid(rs.getInt("aid"));
				adminbean.setUsername(rs.getString("username"));
				adminbean.setName(rs.getString("name"));
				adminbean.setPassword(rs.getString("password"));
				adminbean.setEmail(rs.getString("email"));
				adminbean.setPhone(rs.getString("phone"));
				adminbean.setStatus(rs.getInt("status"));
				adminbean.setLend_num(rs.getInt("lend_num"));
				adminbean.setMax_num(rs.getInt("max_num"));
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		finally {
			DbUtil.CloseDB(rs, stm, conn);
		}
		
		return adminbean;
	}
	
	/**
	 * 获取全部用户的信息，其中sql语句中的status=1，表示只查找读者(1)，不显示管理员(2)的
	 * 
	 */
	public ArrayList get_ListInfo(){
		ArrayList tag_Array = new ArrayList();
		Connection conn = DbUtil.getConn();
		String sql = "select * from admin where status=1";
		PreparedStatement stm = null;
		ResultSet rs = null;
		try {
			stm = conn.prepareStatement(sql);
			rs = stm.executeQuery();
			while(rs.next()){
				AdminBean adminbean = new AdminBean();
				adminbean.setAid(rs.getInt("aid"));
				adminbean.setUsername(rs.getString("username"));
				adminbean.setName(rs.getString("name"));
				adminbean.setPassword(rs.getString("password"));
				adminbean.setEmail(rs.getString("email"));
				adminbean.setPhone(rs.getString("phone"));
				adminbean.setStatus(rs.getInt("status"));
				adminbean.setLend_num(rs.getInt("lend_num"));
				adminbean.setMax_num(rs.getInt("max_num"));
				tag_Array.add(adminbean);
			}
			
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		finally {
			DbUtil.CloseDB(rs, stm, conn);
		}
		return tag_Array;
	}
	
	/**
	 * 根据传入的aid图书号，查找到对应的读者的全部信息，返回一个AdminBean类型的数据，与上一个相似，只是aid的类型为String，
	 * 
	 */
	public AdminBean get_AidInfo2(String aid){
		AdminBean adminbean = new AdminBean();
		DbUtil dbUtil=new DbUtil();
		Connection conn = dbUtil.getConn();
		String sql = "select * from admin where aid="+aid;
		PreparedStatement stm = null;
		ResultSet rs = null;
		try {
			stm = conn.prepareStatement(sql);
			rs = stm.executeQuery();
			if(rs.next()){
				adminbean.setAid(rs.getInt("aid"));
				adminbean.setUsername(rs.getString("username"));
				adminbean.setName(rs.getString("name"));
				adminbean.setPassword(rs.getString("password"));
				adminbean.setEmail(rs.getString("email"));
				adminbean.setPhone(rs.getString("phone"));
				adminbean.setStatus(rs.getInt("status"));
				adminbean.setLend_num(rs.getInt("lend_num"));
				adminbean.setMax_num(rs.getInt("max_num"));
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		finally {
			DbUtil.CloseDB(rs, stm, conn);
		}
		return adminbean;
	}
	/**
	 * 修改读者的信息
	 */
	public void updateUser(int aid, String username, String password, String name, String email, String phone,
			int lend_num, int max_num) {
		// TODO Auto-generated method stub
		DbUtil dbUtil=new DbUtil();
		Connection conn = dbUtil.getConn();
		String sql = "update admin set username=?,name=?,email=?,phone=?,password=?,lend_num=?,max_num=? where aid=?";
		PreparedStatement stm = null;
		try {
			stm = conn.prepareStatement(sql);
			stm.setString(1, username);
			stm.setString(2, name);
			stm.setString(3, email);
			stm.setString(4, phone);
			stm.setString(5, password);
			stm.setInt(6, lend_num);
			stm.setInt(7, max_num);
			stm.setInt(8, aid);
			stm.executeUpdate();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
	/**
	 * 删除用户的信息，根据传入的aid作为条件
	 * 
	 */
	public void deleteUser(int aid) {
		// TODO Auto-generated method stub
				DbUtil dbUtil=new DbUtil();
				Connection conn = dbUtil.getConn();
				String sql = "delete from admin where aid=?";
				PreparedStatement stm = null;
				try {
					stm = conn.prepareStatement(sql);
					stm.setInt(1, aid);
					stm.executeUpdate();
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}	
	}
	
}

 LoginServlet.java

package com.hry.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.SQLException;

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.hry.bean.AdminBean;
import com.hry.dao.AdminDao;

/**
 * Servlet implementation class LoginServlet
 */
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
	AdminDao userdao = new AdminDao(); 
	AdminDao admindao = new AdminDao();
	
    /**
     * @see HttpServlet#HttpServlet()
     */
    public LoginServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

   
	
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		

	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		//登录的判断
		//编码格式
		request.setCharacterEncoding("UTF-8");
		response.setContentType("text/html;charset=UTF-8");
		//获取账号和密码
//		PrintWriter out = response.getWriter();
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		System.out.println(username);
		
		//对账号和密码进行判断
		boolean result = userdao.Login_verify(username, password);
		System.out.println(result);
		HttpSession session = request.getSession();
		//判断输入正确
		if(result){
			AdminBean adminbean = new AdminBean();
			//更加账号和密码查找出读者的信息
			adminbean = admindao.getAdminInfo(username,password);
			//将aid存入session中
			session.setAttribute("aid", ""+adminbean.getAid());
			//设置session的失效时间
			session.setMaxInactiveInterval(6000);
			//根据status的值来判断是管理员，还是读者，status=1为读者
			System.out.println(adminbean.getStatus());
			if(adminbean.getStatus()==1){
				response.sendRedirect("index2.jsp");
			}else{
				response.sendRedirect("admin.jsp");
			}
		}else{
			//没有找到对应的账号和密码，返回重新登录
			session.setAttribute("state", "密码错误");
			response.sendRedirect("login.jsp");
		}
	
	}

}

 RegisterServlet.java

package com.hry.servlet;

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;

import com.hry.bean.AdminBean;
import com.hry.dao.AdminDao;

/**
 * Servlet implementation class RegisterServlet
 */
@WebServlet("/RegisterServlet")
public class RegisterServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    public RegisterServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
	}

	/**
	 * @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);
		request.setCharacterEncoding("UTF-8");
		response.setContentType("text/html;charset=UTF-8");
		
		//获取注册信息
		AdminDao userdao = new AdminDao();
		
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		String name = request.getParameter("name");
		String email = request.getParameter("email");
		String phone = request.getParameter("phone");
		
		System.out.println(username);
		//默认设置最大借阅数和借阅天数
		int lend_num = 30;
		int max_num = 5;
	

		//将注册信息存入数据库，再返回登录
		userdao.Register(username,password,name,email,phone,lend_num,max_num);
        response.sendRedirect("login.jsp");
	}

}

 BookBean.java

package com.hry.bean;

public class BookBean {
	/**
	 * 图书的数据表的bean
	 */
	private int bid;//图书id
	private String name;//图书名称
	private String card;//图书号
	private String autho;//作者
	private int num;//图书数量
	private String type;//图书的分类
	private String press;//出版社
	public int getBid() {
		return bid;
	}
	public void setBid(int bid) {
		this.bid = bid;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getCard() {
		return card;
	}
	public void setCard(String card) {
		this.card = card;
	}
	public String getAutho() {
		return autho;
	}
	public void setAutho(String autho) {
		this.autho = autho;
	}
	public int getNum() {
		return num;
	}
	public void setNum(int num) {
		this.num = num;
	}
	public String getType() {
		return type;
	}
	public void setType(String type) {
		this.type = type;
	}
	public String getPress() {
		return press;
	}
	public void setPress(String press) {
		this.press = press;
	}

}

 AdminServlet.java 

package com.hry.servlet;

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.hry.bean.AdminBean;
import com.hry.dao.AdminDao;
import com.hry.dao.BookDao;

/**
 * Servlet implementation class AdminServlet
 */
@WebServlet("/AdminServlet")
public class AdminServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    public AdminServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		//PrintWriter:输出流，为异常处理
		PrintWriter out = response.getWriter();
		//设置编码类型
		request.setCharacterEncoding("UTF-8");
		response.setContentType("text/html;charset=UTF-8");
		BookDao bookdao = new BookDao();
		//这里为了简单，设置了tip，用来区分是修改密码功能，还是修改个人资料的功能，tip=1为修改密码
		int tip = Integer.parseInt(request.getParameter("tip"));
		//获取发起请求页面的文件名称，这个在对应的jsp里面的表单填写，修改完成后就可以直接返回对应的页面
		String url = request.getParameter("url");
		System.out.println(url);
		HttpSession session = request.getSession();
		AdminBean adminbean = new AdminBean();
		//获取存到session的aid
		String aid = (String) session.getAttribute("aid");
		AdminDao admindao = new AdminDao();
		//通过aid获取到读者的信息
		adminbean = admindao.get_AidInfo2(aid);
		//修改密码
		if (tip==1) {
			//获取到输入的旧密码，新密码
			String password = request.getParameter("password");
			String password2 = request.getParameter("password2");
			
			//获取读者数据表中的密码
			String old_password = adminbean.getPassword();
			//对旧密码进行比较，如果相同就修改，不相同就直接退出
			if(old_password.equals(password)){
				admindao.updateUser(adminbean.getAid(), adminbean.getUsername(), password2, adminbean.getName(),
						adminbean.getEmail(), adminbean.getPhone(), adminbean.getLend_num(), adminbean.getMax_num());
				response.sendRedirect(url+".jsp");
			}else{
				out.write("");
				
			}
		} else {
			//修改个人资料
			//获取输入的信息
			String name = request.getParameter("name");
			String email = request.getParameter("email");
			String phone = request.getParameter("phone");
			//修改输入的信息到数据表中
			admindao.updateUser(adminbean.getAid(), adminbean.getUsername(), adminbean.getPassword(), name,
					email, phone, adminbean.getLend_num(), adminbean.getMax_num());
			response.sendRedirect(url+".jsp");
		}
	}

}

四、源码

点击以下链接（内含数据库文件——books.sql）：

链接：https://pan.baidu.com/s/1HN8CY281ctJWjSkynUgxag?pwd=5ugw 
提取码：5ugw 

五、备注 

该项目是基于一位GitHub上的大佬的项目模板写的，我在上课时按照老师的要求给原项目增加和优化了一些功能，最后变成了现在这个样子。由于当时在GitHub参考了很多的项目，导致我现在已经不记得那位大佬的用户名了，只能说是非常抱歉了。

如有侵权，请联系我删除。

六、祝福

路虽远行则可至，未来一定可期！祝您生活愉快、工作顺心、学业有成！