技術標籤：作業

這是管理員部分
管理員主要有以下幾種功能：
登入：管理員登入
圖書管理：查詢，新增圖書
讀者管理 ：新增學生，修改學生資訊
圖書分類管理：新增分類，修改分類資訊
圖書借閱資訊：確認還書，延期
圖書歸還資訊：借出和歸還時間
管理員管理：返回登入頁面
熱門推薦：推薦借閱最多的圖書
最佳讀者：借閱量最多的讀者
讀者反饋：學生反饋的意見的解決

1.在com.rain.bean包中新增AdminBean.java:管理員的資訊表

package com.rain.bean;

public class AdminBean {
	/**
	 * 使用者的資料表的bean
	 */
	private
 
 int aid;// id
	private int status;// 用來判斷是管理員還是讀者，讀者的值為1，管理員為2
	private String username;// 賬號
	private String name;// 姓名
	private String password;// 密碼
	private String email;// 郵箱
	private String phone;// 手機號
	private int times;//借閱量
	private int lend_num;// 可借閱天數
	private int max_num;// 最大可借數

	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 getTimes() {
		return times;
	}

	public void setTimes(int times) {
		this.times = times;
	}

	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;
	}

}

2.在com.rain.dao包中新增三個java：

1.AdminDao.java:驗證使用者戶資訊

package com.rain.dao;

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

import com.rain.bean.AdminBean;
import com.rain.bean.BookBean;
import com.rain.util.DBUtil;

/**
 * 有關讀者賬號的連線資料庫操作，登入驗證，註冊，修改賬號，修改密碼
 */
public class AdminDao {

	/**
	 * 登入驗證功能，傳入使用者名稱和密碼，在資料庫中查詢，如果找到了，返回true，沒找到則返回false
	 * 
	 * @param username
	 * @param password
	 * @return
	 */
	public boolean Login_verify(String username, String password) {
		Connection conn = DBUtil.getConnectDb();
		PreparedStatement stm = null;
		ResultSet rs = null;
		String sql = "select * from admin where username='" + username + " 'and password='" + password + "'";
		try {
			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;
	}

	/**
	 * 註冊賬號的函式，傳入賬號，密碼，姓名，郵箱，手機號，借閱天數，可借閱數
	
	 */
	public void Register(String username, String password, String name, String email, String phone, int lend_num,
			int max_num) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		String sql = "insert into admin(status,username,password,name,email,phone,lend_num,max_num) values(?,?,?,?,?,?,?,?)";
		int rs = 0;
		PreparedStatement stm = null;
		try {
			stm = conn.prepareStatement(sql);
			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);
			stm.setInt(8, max_num);
			rs = stm.executeUpdate();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * 新增管理員賬號，傳入賬號，密碼，姓名，郵箱，手機號
	 * 
	 */
	public void Register2(String username, String password, String name, String email, String phone) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		String sql = "insert into admin(status,username,password,name,email,phone) values(?,?,?,?,?,?)";
		int rs = 0;
		PreparedStatement stm = null;
		try {
			stm = conn.prepareStatement(sql);
			stm.setInt(1, 2);
			stm.setString(2, username);
			stm.setString(3, password);
			stm.setString(4, name);
			stm.setString(5, email);
			stm.setString(6, phone);
			rs = stm.executeUpdate();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * 根據傳入的賬號，密碼，來查詢對應的讀者資訊，返回一個AdminBean型別，
	 * 
	
	 */
	public AdminBean getAdminInfo(String username, String password) {
		// TODO Auto-generated method stub
		AdminBean adminbean = new AdminBean();
		Connection conn = DBUtil.getConnectDb();
		String sql = "select * from admin where username= '"+username+"' and password= '"+password+"'";
		
		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.setTimes(rs.getInt("times"));
				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;
	}

	/**
	 * 獲取全部使用者的資訊，其中sql語句中的status=1，表示只查詢讀者，不顯示管理員的
	 * 

	 */
	public ArrayList<AdminBean> get_ListInfo() {
		ArrayList<AdminBean> tag_Array = new ArrayList<AdminBean>();
		Connection conn = DBUtil.getConnectDb();
		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.setTimes(rs.getInt("times"));
				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;
	}

	/**
	 * 獲取全部使用者的資訊，其中sql語句中的status=2，表示只查詢管理員，不顯示讀者的
	 * 
	 * @return
	 */
	public ArrayList<AdminBean> get_ListInfo2() {
		ArrayList<AdminBean> tag_Array = new ArrayList<AdminBean>();
		Connection conn = DBUtil.getConnectDb();
		String sql = "select * from admin where status=2";
		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.setTimes(rs.getInt("times"));
				adminbean.setStatus(rs.getInt("status"));
				tag_Array.add(adminbean);
			}

		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			DBUtil.CloseDB(rs, stm, conn);
		}
		return tag_Array;
	}
	/**
	 * 獲取全部使用者的資訊並排序，其中sql語句中的status=1，表示只查詢讀者，不顯示管理員的
	 * 
	 * @return
	 */
	public ArrayList<AdminBean> get_ListInfo3() {
		ArrayList<AdminBean> tag_Array = new ArrayList<AdminBean>();
		Connection conn = DBUtil.getConnectDb();
		String sql = "select * from admin where status=1 order by times desc";
		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.setTimes(rs.getInt("times"));
				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;
	}

	/**
	 * 根據傳入的aid，查詢到對應的讀者的全部資訊，返回一個AdminBean型別的資料
	 * 
	 * @param aid
	 * @return
	 */
	public AdminBean get_AidInfo(int aid) {
		AdminBean adminbean = new AdminBean();
		Connection conn = DBUtil.getConnectDb();
		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.setTimes(rs.getInt("times"));
				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;
	}

	/**
	 * 根據傳入的aid，查詢到對應的讀者的全部資訊，返回一個AdminBean型別的資料，與上一個相似，只是aid的型別為String
	 * 
	 * @param aid
	 * @return
	 */
	public AdminBean get_AidInfo2(String aid) {
		AdminBean adminbean = new AdminBean();
		Connection conn = DBUtil.getConnectDb();
		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.setTimes(rs.getInt("times"));
				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;
	}

	/**
	 * 修改讀者的資訊
	 */
	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
		Connection conn = DBUtil.getConnectDb();
		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();
		}
	}

	/**
	 * 修改管理員的資訊
	 */
	public void updateAdmin(int aid, String username, String password, String name, String email, String phone) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		String sql = "update admin set username=?,name=?,email=?,phone=?,password=? 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, aid);
			stm.executeUpdate();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * 刪除使用者的資訊，根據傳入的aid作為條件
	 * 
	 * @param aid
	 */
	public void deleteUser(int aid) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		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();
		}
	}

	/**
	 * 刪除管理員的資訊，根據傳入的aid作為條件
	 * 
	 * @param aid
	 */
	public void deleteAdmin(int aid) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		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();
		}
	}
	/**
	 * 查詢使用者，根據輸入的名稱，使用like進行模糊查詢，然後返回一個ArrayList陣列型別
	 * 
	 * @param name
	 * @return
	 */
	public ArrayList<AdminBean> getLikeList(String name) {
		// TODO Auto-generated method stub
		ArrayList<AdminBean> tag_Array = new ArrayList<AdminBean>();
		Connection conn = DBUtil.getConnectDb();
		String sql = "select * from admin where name like '%" + name + "%' or username like '%" + name + "%' or aid like '%" + name + "%'";
		PreparedStatement stm = null;
		ResultSet rs = null;
		try {
			stm = conn.prepareStatement(sql);
			rs = stm.executeQuery();
			while (rs.next()) {
				AdminBean tag = new AdminBean();
				tag.setAid(rs.getInt("aid"));
				tag.setStatus(rs.getInt("status"));
				tag.setUsername(rs.getString("username"));
				tag.setName(rs.getString("name"));
				tag.setPassword(rs.getString("password"));
				tag.setEmail(rs.getString("email"));
				tag.setPhone(rs.getString("phone"));
				tag.setTimes(rs.getInt("times"));
				tag.setLend_num(rs.getInt("lend_num"));
				tag.setMax_num(rs.getInt("max_num"));
				tag_Array.add(tag);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			DBUtil.CloseDB(rs, stm, conn);
		}
		return tag_Array;
	}
}

2.ProblemDao.java:反饋的解決

package com.rain.dao;

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

import com.rain.bean.AdminBean;
import com.rain.bean.ProblemBean;
import com.rain.util.DBUtil;

public class ProblemDao {
	/**
	 * 獲取所有反饋問題的資訊，返回陣列形式
	 * 
	 * @return
	 */
	public ArrayList<ProblemBean> get_ListInfo() {
		ArrayList<ProblemBean> tag_Array = new ArrayList<ProblemBean>();
		Connection conn = DBUtil.getConnectDb();
		String sql = "select * from problem";
		PreparedStatement stm = null;
		ResultSet rs = null;
		try {
			stm = conn.prepareStatement(sql);
			rs = stm.executeQuery();
			while (rs.next()) {
				ProblemBean tag = new ProblemBean();
				tag.setPid(rs.getInt("pid"));
				tag.setAid(rs.getInt("aid"));
				tag.setName(rs.getString("name"));
				tag.setPage(rs.getString("page"));
				tag.setBody(rs.getString("body"));
				tag.setPhone(rs.getString("phone"));
				tag.setStatus(rs.getString("status"));
				tag_Array.add(tag);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			DBUtil.CloseDB(rs, stm, conn);
		}
		return tag_Array;
	}
	/**
	 * 獲取所有反饋問題的資訊，返回陣列形式
	 * 
	 * @return
	 */
	public ArrayList<ProblemBean> get_ListInfo2(String aid) {
		ArrayList<ProblemBean> tag_Array = new ArrayList<ProblemBean>();
		Connection conn = DBUtil.getConnectDb();
		String sql = "select * from problem where aid=" + aid;
		PreparedStatement stm = null;
		ResultSet rs = null;
		try {
			stm = conn.prepareStatement(sql);
			rs = stm.executeQuery();
			while (rs.next()) {
				ProblemBean tag = new ProblemBean();
				tag.setPid(rs.getInt("pid"));
				tag.setAid(rs.getInt("aid"));
				tag.setName(rs.getString("name"));
				tag.setPage(rs.getString("page"));
				tag.setBody(rs.getString("body"));
				tag.setPhone(rs.getString("phone"));
				tag.setStatus(rs.getString("status"));
				tag_Array.add(tag);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			DBUtil.CloseDB(rs, stm, conn);
		}
		return tag_Array;
	}
	/**
	 * 新增一個反饋問題
	 * 
	 * @param adminbean
	 * @param name
	 * @param page
	 * @param body
	 * @param phone
	 */
	public void addProblem(AdminBean adminbean, String name, String page, String body, String phone) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		String sql = "insert into problem(aid,name,page,body,phone) values(?,?,?,?,?)";
		int rs = 0;
		PreparedStatement stm = null;
		try {
			stm = conn.prepareStatement(sql);
			stm.setInt(1, adminbean.getAid());
			stm.setString(2, name);
			stm.setString(3, page);
			stm.setString(4, body);
			stm.setString(5, phone);
			rs = stm.executeUpdate();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * 刪除一個反饋問題
	 * 
	 * @param pid
	 */
	public void deleteProblem(int pid) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		String sql = "delete from problem where pid=?";
		PreparedStatement stm = null;
		try {
			stm = conn.prepareStatement(sql);
			stm.setInt(1, pid);
			stm.executeUpdate();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * 修改反饋問題的狀態
	 * 
	 * @param pid
	 * @param status
	 */
	public void updateProblem(int pid, String status) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		String sql = "update problem set status=? where pid=?";
		PreparedStatement stm = null;
		try {
			stm = conn.prepareStatement(sql);
			stm.setString(1, status);
			stm.setInt(2, pid);
			stm.executeUpdate();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * 查詢反饋問題，根據輸入的名稱，使用like進行模糊查詢，然後返回一個ArrayList陣列型別
	 * 
	 * @param name
	 * @return
	 */
	public ArrayList<ProblemBean> getLikeList(String name) {
		// TODO Auto-generated method stub
		ArrayList<ProblemBean> tag_Array = new ArrayList<ProblemBean>();
		Connection conn = DBUtil.getConnectDb();
		String sql = "select * from problem where name like '%" + name + "%' or page like '%" + name
				+ "%' or body like '%" + name + "%' or status like '%" + name + "%'";
		PreparedStatement stm = null;
		ResultSet rs = null;
		try {
			stm = conn.prepareStatement(sql);
			rs = stm.executeQuery();
			while (rs.next()) {
				ProblemBean tag = new ProblemBean();
				tag.setPid(rs.getInt("pid"));
				tag.setAid(rs.getInt("aid"));
				tag.setName(rs.getString("name"));
				tag.setPage(rs.getString("page"));
				tag.setBody(rs.getString("body"));
				tag.setPhone(rs.getString("phone"));
				tag.setStatus(rs.getString("status"));
				tag_Array.add(tag);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			DBUtil.CloseDB(rs, stm, conn);
		}
		return tag_Array;
	}
}

3.TypeDao.java:圖書分類的修改

package com.rain.dao;

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

import com.rain.bean.TypeBean;
import com.rain.util.DBUtil;

/**
 * 圖書分類的類
 */
public class TypeDao {
	/**
	 * 獲取所有圖書型別的資訊，返回陣列形式
	 * 
	 * @return
	 */
	public ArrayList<TypeBean> get_ListInfo() {
		ArrayList<TypeBean> tag_Array = new ArrayList<TypeBean>();
		Connection conn = DBUtil.getConnectDb();
		String sql = "select * from booktype";
		PreparedStatement stm = null;
		ResultSet rs = null;
		try {
			stm = conn.prepareStatement(sql);
			rs = stm.executeQuery();
			while (rs.next()) {
				TypeBean tag = new TypeBean();
				tag.setTid(rs.getInt("tid"));
				tag.setName(rs.getString("name"));
				tag_Array.add(tag);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			DBUtil.CloseDB(rs, stm, conn);
		}
		return tag_Array;
	}

	/**
	 * 修改圖書分類的資訊
	 * 
	 * @param tid
	 * @param name
	 */
	public void updateTypeBook(int tid, String name) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		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();
		}
	}

	/**
	 * 新增一個圖書分類
	 * 
	 * @param name
	 */
	public void addBookType(String name) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		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();
		}
	}

	/**
	 * 刪除一個圖書分類
	 * 
	 * @param tid
	 */
	public void deleteBookType(int tid) {
		// TODO Auto-generated method stub
		Connection conn = DBUtil.getConnectDb();
		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();
		}
		// System.out.println(uid);

	}
}

3.新增一個包：com.rain.servlet:用於實現管理員的各種功能(由於過多省略了)