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目录
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
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
admin、book、booktype、history
- 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<AdminBean> get_ListInfo(){
- ArrayList<AdminBean> tag_Array = new ArrayList<AdminBean>();
- 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();
- }
- }
-
- }
- 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");
- }
-
- }
-
- }
- 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");
- }
-
- }
- 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;
- }
-
- }
- 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("<script type='text/javascript'>alert('password error');location.href='"+url+".jsp'; </script>");
-
- }
- } 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");
- }
- }
-
- }
链接:https://pan.baidu.com/s/1HN8CY281ctJWjSkynUgxag?pwd=5ugw
提取码:5ugw
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。
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!
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