java代码文件

src/com/hry/bean/AdminBean.java

@@ -0,0 +1,73 @@
+package com.hry.bean;
+
+public class AdminBean {
+	public AdminBean() {
+		super();
+		// TODO Auto-generated constructor stub
+	}
+	
+	private int aid;//用户管理员id
+	private int status;//用来判断是管理员还是读者，读者的值为1，管理员为2
+	private String username;//账号，
+	private String name;//读者的姓名
+	private String password;//密码
+	private String email;//邮箱
+	private String phone;//手机号
+	private int lend_num;//可借阅天数
+	private int max_num;//最大可借数
+	public int getAid() {
+		return aid;
+	}
+	public void setAid(int aid) {
+		this.aid = aid;
+	}
+	public int getStatus() {
+		return status;
+	}
+	public void setStatus(int status) {
+		this.status = status;
+	}
+	public String getUsername() {
+		return username;
+	}
+	public void setUsername(String username) {
+		this.username = username;
+	}
+	public String getName() {
+		return name;
+	}
+	public void setName(String name) {
+		this.name = name;
+	}
+	public String getPassword() {
+		return password;
+	}
+	public void setPassword(String password) {
+		this.password = password;
+	}
+	public String getEmail() {
+		return email;
+	}
+	public void setEmail(String email) {
+		this.email = email;
+	}
+	public String getPhone() {
+		return phone;
+	}
+	public void setPhone(String phone) {
+		this.phone = phone;
+	}
+	public int getLend_num() {
+		return lend_num;
+	}
+	public void setLend_num(int lend_num) {
+		this.lend_num = lend_num;
+	}
+	public int getMax_num() {
+		return max_num;
+	}
+	public void setMax_num(int max_num) {
+		this.max_num = max_num;
+	}
+
+}

src/com/hry/bean/BookBean.java

@@ -0,0 +1,57 @@
+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;
+	}
+
+}

src/com/hry/bean/HistoryBean.java

@@ -0,0 +1,77 @@
+package com.hry.bean;
+
+public class HistoryBean {
+//	历史借阅记录的数据表的bean
+	
+	private int hid;//借阅记录的id
+	private int aid;//用户管理员的id
+	private int bid;//图书的id
+	private String card;//图书号
+	private String bookname;//图书名称
+	private String adminname;//读者的账号
+	private String username;//读者的姓名
+	private String begintime;//借阅时间
+	private String endtime;//要还书的世界
+	private int status;//表示借阅状态，1为正在借阅，2是已经还书
+	public int getHid() {
+		return hid;
+	}
+	public void setHid(int hid) {
+		this.hid = hid;
+	}
+	public int getAid() {
+		return aid;
+	}
+	public void setAid(int aid) {
+		this.aid = aid;
+	}
+	public int getBid() {
+		return bid;
+	}
+	public void setBid(int bid) {
+		this.bid = bid;
+	}
+	public String getCard() {
+		return card;
+	}
+	public void setCard(String card) {
+		this.card = card;
+	}
+	public String getBookname() {
+		return bookname;
+	}
+	public void setBookname(String bookname) {
+		this.bookname = bookname;
+	}
+	public String getAdminname() {
+		return adminname;
+	}
+	public void setAdminname(String adminname) {
+		this.adminname = adminname;
+	}
+	public String getUsername() {
+		return username;
+	}
+	public void setUsername(String username) {
+		this.username = username;
+	}
+	public String getBegintime() {
+		return begintime;
+	}
+	public void setBegintime(String begintime) {
+		this.begintime = begintime;
+	}
+	public String getEndtime() {
+		return endtime;
+	}
+	public void setEndtime(String endtime) {
+		this.endtime = endtime;
+	}
+	public int getStatus() {
+		return status;
+	}
+	public void setStatus(int status) {
+		this.status = status;
+	}
+	
+}

src/com/hry/bean/TypeBean.java

@@ -0,0 +1,19 @@
+package com.hry.bean;
+
+public class TypeBean {
+//	图书分类的数据表的bean
+	private int tid;//分类的id
+	private String name;//分类的名称
+	public int getTid() {
+		return tid;
+	}
+	public void setTid(int tid) {
+		this.tid = tid;
+	}
+	public String getName() {
+		return name;
+	}
+	public void setName(String name) {
+		this.name = name;
+	}
+}

src/com/hry/dao/AdminDao.java

@@ -0,0 +1,234 @@
+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();
+				}	
+	}
+	
+}

src/com/hry/dao/BookDao.java

@@ -0,0 +1,323 @@
+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 java.util.Calendar;
+
+import com.hry.bean.AdminBean;
+import com.hry.bean.BookBean;
+import com.hry.bean.HistoryBean;
+import com.hry.dbUtils.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
+	 * 
+	 */
+	public void addBook(String card ,String name ,String type , String autho ,String press, int num ) {
+		//连接数据库
+		Connection conn = DbUtil.getConn();
+		//SQL
+		String sql = "insert into book(card,name,type,autho,press,num) values(?,?,?,?,?,?)";
+		int rs = 0;
+		PreparedStatement stm = null;
+		try {
+			//预编译SQL，减少sql执行
+			stm = conn.prepareStatement(sql);
+			//添加
+			stm.setString(1, card);
+			stm.setString(2, name);
+			stm.setString(3, type);
+			stm.setString(4, autho);
+			stm.setString(5, press);
+			stm.setInt(6, num);
+			//执行更新
+			rs = stm.executeUpdate();
+			
+		} catch (Exception e) {
+			// TODO: handle exception
+			e.printStackTrace();
+		}
+	}
+	/**
+	 * 获取所有的图书信息，返回的是ArrayList数组形式
+	 * 访问 ArrayList 中的元素可以使用 get() 方法：
+	 *修改 ArrayList 中的元素可以使用 set() 方法：
+	 *删除 ArrayList 中的元素可以使用 remove() 方法：
+	 */
+	public ArrayList<BookBean> get_ListInfo(){
+		ArrayList<BookBean> tag_Array = new ArrayList<BookBean>();
+		Connection conn = DbUtil.getConn();
+		String sql = "select * from book";
+		PreparedStatement stm = null;
+		ResultSet rs = null;
+		try {
+			stm = conn.prepareStatement(sql);
+			rs = stm.executeQuery();
+			while (rs.next()) {
+				BookBean tag = new BookBean();
+				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 (Exception e) {
+			// TODO: handle exception
+			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
+	 *
+	 */
+	public ArrayList<HistoryBean> get_HisoryListInfo(int status,String aid){
+		ArrayList<HistoryBean> tag_Array = new ArrayList<HistoryBean>();
+		Connection conn = DbUtil.getConn();
+		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()) {
+				HistoryBean tag = new HistoryBean();
+				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 (Exception e) {
+			// TODO: handle exception
+			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
+	 *
+	 */
+	public ArrayList<HistoryBean> get_HistoryListInfo2(int status){
+		ArrayList<HistoryBean> tag_Array = new ArrayList<HistoryBean>();
+		Connection conn = DbUtil.getConn();
+		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()){
+				HistoryBean tag = new HistoryBean();
+				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BookBean数据类型
+	 *
+	 */
+	public BookBean get_BookInfo(int bid) {
+		BookBean tag = new BookBean();
+		Connection conn = DbUtil.getConn();
+		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 (Exception e) {
+			// TODO: handle exception
+			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.getConn();
+		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
+	 */
+	public void deleteBook(int bid) {
+		Connection conn = DbUtil.getConn();
+		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();
+		}
+	}
+	/**
+	 * 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
+	 */
+	public ArrayList<BookBean> getLikeList(String name){
+		ArrayList<BookBean> tag_Array = new ArrayList<BookBean>();
+		Connection conn = DbUtil.getConn();
+		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()){
+				BookBean tag = new BookBean();
+				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 (Exception e) {
+			// TODO: handle exception
+		}
+		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
+	 *
+	 */
+	public void borrowBook(int bid, AdminBean adminbean) {
+		BookBean bookbean = new BookBean();
+		bookbean = this.get_BookInfo(bid);
+		//生成日期功能
+		Calendar c = Calendar.getInstance();
+		int year = c.get(Calendar.YEAR);
+		int month = c.get(Calendar.MONTH);
+		int day = c.get(Calendar.DATE);
+		//生成借阅开始时间
+		String begintime = ""+ year +"-"+month +"-"+day;
+		month = month +1;
+		//生成截至还书日期
+		String endtime = ""+year+"-"+month+"-"+day;
+		Connection conn = DbUtil.getConn();
+		String sql = "insert into history(aid,bid,card,bookname,adminname,username,begintime,endtime,status) values(?,?,?,?,?,?,?,?,?)";
+		PreparedStatement stm = null;
+		int rs = 0;
+		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 (Exception e) {
+			// TODO: handle exception
+			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
+	 * 
+	 */
+	public void borrowBook2(int hid) {
+		//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.getConn();
+		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 (Exception e) {
+			// TODO: handle exception
+			e.printStackTrace();
+		}
+	}
+	
+}

src/com/hry/dao/TypeDao.java

@@ -0,0 +1,107 @@
+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.TypeBean;
+import com.hry.dbUtils.DbUtil;
+
+
+/**
+ * 图书分类的类
+ */
+public class TypeDao {
+	/**
+	 * 获取所有图书类型的信息，返回数组形式
+	 *访问 ArrayList 中的元素可以使用 get() 方法：
+	 *修改 ArrayList 中的元素可以使用 set() 方法：
+	 *删除 ArrayList 中的元素可以使用 remove() 方法：
+	 */
+	public ArrayList<TypeBean> get_ListInfo(){
+		ArrayList<TypeBean> tag_Array = new ArrayList<TypeBean>();
+		//数据库连接
+		Connection conn = DbUtil.getConn();
+		//SQL
+		String sql = "select * from booktype";
+		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();
+			//遍历
+			while(rs.next()){
+				TypeBean tag = new TypeBean();
+				tag.setTid(rs.getInt("tid"));
+				tag.setName(rs.getString("name"));
+				tag_Array.add(tag);
+			}
+		} catch (Exception e) {
+			// TODO: handle exception
+			e.printStackTrace();
+		}
+		finally {
+			DbUtil.CloseDB(rs, stm, conn);
+		}
+		return tag_Array;
+	}
+	/**
+	 * 修改图书分类的信息
+	 * tid
+	 * name
+	 */
+	public void updateTypeBook(int tid, String name) {
+		Connection conn = DbUtil.getConn();
+		String sql = "update booktype set name=? where tid=?";
+		PreparedStatement stm = null;
+		try {
+			stm = conn.prepareStatement(sql);
+			stm.setString(1, name);
+			stm.setInt(2, tid);
+			stm.executeUpdate();
+		} catch (SQLException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+	/**
+	 * 添加一个图书分类
+	 * name
+	 */
+	public void addBookType(String name) {
+		Connection conn = DbUtil.getConn();
+		String sql = "insert into booktype(name) values(?)";
+		int rs = 0;
+		PreparedStatement stm = null;
+		try {
+			stm = conn.prepareStatement(sql);
+			stm.setString(1, name);;
+			rs = stm.executeUpdate();
+		} catch (SQLException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+	/**
+	 * 删除一个图书分类
+	 * tid
+	 */
+	public void deleteBookType(int tid) {
+		Connection conn = DbUtil.getConn();
+		String sql = "delete from booktype where tid=?";
+		PreparedStatement stm = null;
+		try {
+			stm = conn.prepareStatement(sql);
+			stm.setInt(1, tid);
+			stm.executeUpdate();
+		} catch (SQLException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+	
+}

src/com/hry/dbUtils/DbUtil.java

@@ -0,0 +1,68 @@
+package com.hry.dbUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.Properties;
+
+public class DbUtil {
+
+	public static String username = "root";
+	public static String pwd = "123456";
+	public static String url = "jdbc:mysql://localhost:3306/book?serverTimezone=UTC";
+	
+	static{
+		try {
+			Class.forName("com.mysql.cj.jdbc.Driver");
+		} catch(ClassNotFoundException e){
+			e.printStackTrace();
+		}
+	}
+	
+	public static Connection getConn(){
+		Connection conn = null;
+		try{
+			conn = DriverManager.getConnection(url,username,pwd);
+		
+		} catch (SQLException e){
+			e.printStackTrace();
+		}
+		return conn;
+	}
+	
+	public static void CloseDB(ResultSet rs, PreparedStatement stm, Connection conn){
+		if(rs!=null)
+		{
+			try {
+				rs.close();
+			} catch (SQLException e) {
+				// TODO Auto-generated catch block
+				e.printStackTrace();
+			}
+		}
+		if(stm!=null)
+		{
+			try {
+				stm.close();
+			} catch (SQLException e) {
+				// TODO Auto-generated catch block
+				e.printStackTrace();
+			}
+		}
+		if(conn!=null)
+		{
+			try {
+				conn.close();
+			} catch (SQLException e) {
+				// TODO Auto-generated catch block
+				e.printStackTrace();
+			}
+		}
+	}
+	
+	
+}

src/com/hry/dbUtils/TestDb.java

@@ -0,0 +1,17 @@
+package com.hry.dbUtils;
+
+import java.sql.Connection;
+
+public class TestDb {
+
+	public static void main(String[] args) {
+		DbUtil  dbUtil = new DbUtil();
+		Connection conn = dbUtil.getConn();
+		
+		if(conn != null){
+            System.out.println("测试：数据库连接成功！");
+        }else{
+            System.out.println("测试：数据库连接失败！");
+        }
+	}
+}

src/com/hry/servlet/AddBookServlet.java

@@ -0,0 +1,49 @@
+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.dao.BookDao;
+
+/**
+ * Servlet implementation class AddBookServlet
+ */
+@WebServlet("/AddBookServlet")
+public class AddBookServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    public AddBookServlet() {
+        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 {
+		//设置编码类型
+		request.setCharacterEncoding("UTF-8");
+		response.setContentType("text/html;charset = UTF-8");
+		//获取要添加的图书信息
+		//得到图书号参数
+		String card = request.getParameter("card");
+		String name = request.getParameter("name");
+		String type = request.getParameter("type");
+		String autho = request.getParameter("autho");
+		//出版社
+		String press = request.getParameter("press");
+		int num = Integer.parseInt(request.getParameter("num"));
+		BookDao bookdao = new BookDao();
+		//调用函数，存入图书
+		bookdao.addBook(card, name, type, autho, press, num);
+		response.sendRedirect("admin_book.jsp");
+	}
+
+}

src/com/hry/servlet/AddBookTypeServlet.java

@@ -0,0 +1,45 @@
+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.dao.TypeDao;
+
+/**
+ * Servlet implementation class AddBookTypeServlet
+ */
+@WebServlet("/AddBookTypeServlet")
+public class AddBookTypeServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public AddBookTypeServlet() {
+        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 {
+		//设置编码类型
+		request.setCharacterEncoding("UTF-8");
+		response.setContentType("text/html;charset=UTF-8");
+		//获取图书分类的名称
+		String name = request.getParameter("name");
+		TypeDao typedao = new TypeDao();
+		//调用函数存入图书分类信息
+		typedao.addBookType(name);
+		response.sendRedirect("admin_booktype.jsp");
+	}
+
+}

src/com/hry/servlet/AddUserServlet.java

@@ -0,0 +1,48 @@
+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.dao.AdminDao;
+
+/**
+ * Servlet implementation class AddUserServlet
+ */
+@WebServlet("/AddUserServlet")
+public class AddUserServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    public AddUserServlet() {
+        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 {
+		//设置编码类型
+		request.setCharacterEncoding("UTF-8");
+		response.setContentType("text/html;charset=UTF-8");
+		//获取要添加的读者信息
+		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);
+		int lend_num = Integer.parseInt(request.getParameter("lend_num"));
+		int max_num = Integer.parseInt(request.getParameter("max_num"));
+		//调用函数添加读者信息
+		AdminDao userdao = new AdminDao();
+		userdao.Register(username, password, name, email, phone, lend_num, max_num);
+		response.sendRedirect("admin_user.jsp");
+	}
+
+}

src/com/hry/servlet/AdminServlet.java

@@ -0,0 +1,83 @@
+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");
+		}
+	}
+
+}

src/com/hry/servlet/BorrowServlet.java

@@ -0,0 +1,68 @@
+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 javax.servlet.http.HttpSession;
+
+import com.hry.bean.AdminBean;
+import com.hry.dao.AdminDao;
+import com.hry.dao.BookDao;
+
+/**
+ * Servlet implementation class BorrowServlet
+ */
+@WebServlet("/BorrowServlet")
+public class BorrowServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    
+    public BorrowServlet() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		//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();
+			AdminBean admin = new AdminBean();
+			//获取到存入session的aid读者id
+			String aid = (String)session.getAttribute("aid");
+			AdminDao admindao = new AdminDao();
+			//通过aid获取到读者信息
+			admin = admindao.get_AidInfo2(aid);
+			//将借阅记录存入数据库
+			bookdao.borrowBook(bid, admin);
+			response.sendRedirect("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("borrow.jsp");
+			} else {
+				response.sendRedirect("admin_borrow.jsp");
+			}
+		}
+	}
+
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		
+	}
+
+}

src/com/hry/servlet/DeleteServlet.java

@@ -0,0 +1,40 @@
+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.dao.BookDao;
+
+/**
+ * Servlet implementation class DeleteServlet
+ */
+@WebServlet("/DeleteServlet")
+public class DeleteServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    public DeleteServlet() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		//删除图书信息
+		//设置编码类型
+		request.setCharacterEncoding("UTF-8");
+		response.setContentType("text/html;charset= UTF-8");
+		//Integer 类：parseInt() 方法用于将字符串参数作为有符号的十进制整数进行解析
+		int bid = Integer.parseInt(request.getParameter("bid"));
+		BookDao bookdao = new BookDao();
+		bookdao.deleteBook(bid);
+		response.sendRedirect("admin_book.jsp");
+	}
+
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		
+	}
+
+}

src/com/hry/servlet/DeleteTypeServlet.java

@@ -0,0 +1,45 @@
+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.dao.TypeDao;
+
+/**
+ * Servlet implementation class DeleteTypeServlet
+ */
+@WebServlet("/DeleteTypeServlet")
+public class DeleteTypeServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public DeleteTypeServlet() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		//删除图书分类信息
+		//设置编码类型
+		request.setCharacterEncoding("UTF-8");
+		response.setContentType("text/html; charset=UTF-8");
+		//Integer 类：parseInt() 方法用于将字符串参数作为有符号的十进制整数进行解析
+		int tid = Integer.parseInt(request.getParameter("tid"));
+		TypeDao typedao = new TypeDao();
+		typedao.deleteBookType(tid);
+		response.sendRedirect("admin_booktype.jsp");
+	}
+
+	
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		
+	}
+
+}

src/com/hry/servlet/DeleteUserServlet.java

@@ -0,0 +1,40 @@
+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.dao.AdminDao;
+
+/**
+ * Servlet implementation class DeleteUserServlet
+ */
+@WebServlet("/DeleteUserServlet")
+public class DeleteUserServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    public DeleteUserServlet() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+//界面无post一般写get上
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		//设置编码类型
+		request.setCharacterEncoding("UTF-8");
+		response.setContentType("text/html; charset=UTF-8");
+		//删除读者信息
+		//Integer 类：parseInt() 方法用于将字符串参数作为有符号的十进制整数进行解析
+		int aid = Integer.parseInt(request.getParameter("aid"));
+		AdminDao admindao = new AdminDao();
+		admindao.deleteUser(aid);
+		response.sendRedirect("admin_user.jsp");
+	}
+
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		
+	}
+
+}

src/com/hry/servlet/LoginServlet.java

@@ -0,0 +1,81 @@
+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");
+		}
+	
+	}
+
+}

src/com/hry/servlet/RegisterServlet.java

@@ -0,0 +1,61 @@
+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");
+	}
+
+}

src/com/hry/servlet/SelectServlet.java

@@ -0,0 +1,64 @@
+package com.hry.servlet;
+
+import java.io.IOException;
+import java.util.ArrayList;
+
+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.BookBean;
+import com.hry.dao.BookDao;
+
+/**
+ * Servlet implementation class SelectServlet
+ */
+@WebServlet("/SelectServlet")
+public class SelectServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public SelectServlet() {
+        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 {
+		//设置编码类型
+		request.setCharacterEncoding("UTF-8");
+		response.setContentType("name");
+		
+		//因为在管理员界面和读者界面都有查找功能，为了将查找的结果返回正确的页面，设置了tip，tip=1表示管理员界面
+		int tip = Integer.parseInt(request.getParameter("tip"));
+		System.out.println(tip);
+		String name = request.getParameter("name");
+		BookDao bookdao = new BookDao();
+		ArrayList<BookBean> data = bookdao.getLikeList(name);
+		//将获取的结果存入请求中
+		request.setAttribute("data", data);
+		String url ="";
+		//判断，转发界面
+		if (tip == 1) {
+			url = response.encodeURL("admin_book.jsp");
+		} else {
+			url = response.encodeURL("select.jsp");
+		}
+		//请求转发
+		request.getRequestDispatcher(url).forward(request, response);
+	}
+
+}

src/com/hry/servlet/UpdateBookServlet.java

@@ -0,0 +1,51 @@
+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.dao.BookDao;
+
+/**
+ * Servlet implementation class UpdateBookServlet
+ */
+@WebServlet("/UpdateBookServlet")
+public class UpdateBookServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    
+    public UpdateBookServlet() {
+        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 {
+		//修改图书信息
+		//设置编码类型
+		request.setCharacterEncoding("UTF-8");
+		response.setContentType("/texthtml;charset= UTF-8");
+		
+		String card = request.getParameter("card");
+		String name = request.getParameter("name");
+		String type = request.getParameter("type");
+		String autho = request.getParameter("autho");
+		String press = request.getParameter("press");
+		//Integer 类：parseInt() 方法用于将字符串参数作为有符号的十进制整数进行解析
+		int num = Integer.parseInt(request.getParameter("num"));
+		int bid = Integer.parseInt(request.getParameter("updatebid"));
+		System.out.println(bid);
+		BookDao bookdao = new BookDao();
+		bookdao.updateBook(bid, card, name, type, autho, press, num);
+	
+		response.sendRedirect("admin_book.jsp");
+	}
+
+}

src/com/hry/servlet/UpdateBookTypeServlet.java

@@ -0,0 +1,46 @@
+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.dao.TypeDao;
+
+
+/**
+ * Servlet implementation class UpdateBookTypeServlet
+ */
+@WebServlet("/UpdateBookTypeServlet")
+public class UpdateBookTypeServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+   
+    public UpdateBookTypeServlet() {
+        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 {
+		//修改图书类型信息
+		//设置编码类型
+		request.setCharacterEncoding("UTF-8");
+		response.setContentType("text/html;charset=UTF-8");
+		String name = request.getParameter("name");
+		//Integer 类：parseInt() 方法用于将字符串参数作为有符号的十进制整数进行解析
+		//分类的id
+		int tid = Integer.parseInt(request.getParameter("tid"));
+		TypeDao typedao = new TypeDao();
+		typedao.updateTypeBook(tid,name);
+		response.sendRedirect("admin_booktype.jsp");
+	}
+
+}

src/com/hry/servlet/UpdateUserServlet.java

@@ -0,0 +1,55 @@
+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.dao.AdminDao;
+
+/**
+ * Servlet implementation class UpdateUserServlet
+ */
+@WebServlet("/UpdateUserServlet")
+public class UpdateUserServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public UpdateUserServlet() {
+        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 {
+		//设置编码类型
+		request.setCharacterEncoding("UTF-8");
+		response.setContentType("text/html; charset= UTF-8");
+		//修改读者信息
+		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");
+		//Integer 类：parseInt() 方法用于将字符串参数作为有符号的十进制整数进行解析
+		//借阅最大天数
+		int max_num = Integer.parseInt(request.getParameter("max_num"));
+		//最大可借数
+		int lend_num = Integer.parseInt(request.getParameter("lend_num"));
+		//用户id
+		int aid = Integer.parseInt(request.getParameter("aid"));
+		System.out.println(username);
+		
+		AdminDao userdao = new AdminDao();
+		userdao.updateUser(aid, username, password, name, email, phone, lend_num, max_num);
+		response.sendRedirect("admin_user.jsp");
+	}
+
+}