图书馆管理系统的实体封装类

最近做的图书馆管理系统，其包装的封装类是BaseDao 

1.图书的封装类：添加、删除、修改、查找

  1 package com.jerech.dao;
  2 
  3 import java.security.interfaces.RSAKey;
  4 import java.sql.Date;
  5 import java.sql.ResultSet;
  6 import java.sql.SQLException;
  7 import java.util.ArrayList;
  8 import java.util.List;
  9 
 10 import javax.persistence.Id;
 11 
 12 import com.jerech.entity.Book;
 13 import com.jerech.entity.Member;
 14 
 15 public class BookInfoDao extends baseDAO {
 16     // 添加图书
 17     public void bookReg(Book book) {
 18         StringBuilder sql = new StringBuilder(
 19                 "insert into bookInfo(bookId,bookName,author,price,bookDate,amount)");
 20         sql.append("values(?,?,?,?,?,?)");
 21         String execsql = sql.toString();
 22         // 将util包下的Date转成SQL下的Date
 23         java.sql.Date bornDate = new java.sql.Date(book.getBookDate().getTime());
 24 
 25         Object[] params = { book.getBookNum(), book.getBookName(),
 26                 book.getAuthor(), book.getPrice(), bornDate, book.getAmount() };
 27         super.execUpdate(execsql, params);
 28     }
 29 
 30     // 获取图书
 31     public List getAllBook() {
 32         String sql = "select * from bookInfo";
 33         ResultSet rs = super.execQuery(sql, null);
 34         List booklist = new ArrayList();
 35 
 36         try {
 37             while (rs.next()) {
 38                 Book book = new Book();
 39                 book.setBookNum(rs.getString("bookId"));
 40                 book.setBookName(rs.getString("bookName"));
 41                 book.setAuthor(rs.getString("author"));
 42                 book.setPrice(rs.getFloat("price"));
 43                 book.setBookDate(rs.getDate("bookDate"));
 44                 book.setAmount(rs.getInt("amount"));
 45                 booklist.add(book);
 46             }
 47         } catch (SQLException e) {
 48             // TODO Auto-generated catch block
 49             e.printStackTrace();
 50         } finally {
 51             super.closeAll();
 52         }
 53         return booklist;
 54     }
 55 
 56     // 删除图书
 57     public void bookDel(String id) {
 58         String sql = "delete from bookInfo where bookid=?";
 59         Object[] params = { id };
 60         super.execUpdate(sql, params);
 61     }
 62 
 63     // 按名称查找
 64     public Book findBookByName(String name) {
 65         String sql = "select * from bookInfo where bookName=?";
 66         Object[] params = { name };
 67         ResultSet rs = super.execQuery(sql, params);
 68         try {
 69             while (rs.next()) {
 70                 Book book = new Book();
 71                 book.setBookNum(rs.getString("bookId"));
 72                 book.setBookName(rs.getString("bookName"));
 73                 book.setAuthor(rs.getString("author"));
 74                 book.setPrice(rs.getFloat("price"));
 75                 book.setBookDate(rs.getDate("bookDate"));
 76                 book.setAmount(rs.getInt("amount"));
 77                 return book;
 78             }
 79         } catch (SQLException e) {
 80             // TODO Auto-generated catch block
 81             e.printStackTrace();
 82         } finally {
 83             super.closeAll();
 84         }
 85         return null;
 86     }
 87 
 88     // 按编号查找
 89     public Book findBookById(int id) {
 90         String sql = "select * from bookInfo where bookId=?";
 91         Object[] params = { id };
 92         ResultSet rs = super.execQuery(sql, params);
 93         try {
 94             while (rs.next()) {
 95                 Book book = new Book();
 96                 book.setBookNum(rs.getString("bookId"));
 97                 book.setBookName(rs.getString("bookName"));
 98                 book.setAuthor(rs.getString("author"));
 99                 book.setPrice(rs.getFloat("price"));
100                 book.setBookDate(rs.getDate("bookDate"));
101                 book.setAmount(rs.getInt("amount"));
102                 return book;
103             }
104         } catch (SQLException e) {
105             // TODO Auto-generated catch block
106             e.printStackTrace();
107         } finally {
108             super.closeAll();
109         }
110         return null;
111     }
112 
113     // 修改图书
114     public void bookUpdate(Book book) {
115         String sql = "update bookInfo set bookName=?,author=?,price=?,bookDate=?,amount=? where bookId=? ";
116         java.sql.Date bornDate = new java.sql.Date(book.getBookDate().getTime());
117 
118         Object[] params = { book.getBookName(), book.getAuthor(),
119                 book.getPrice(), bornDate, book.getAmount(), book.getBookNum() };
120         super.execUpdate(sql, params);
121 
122     }
123 }

2.用户的登陆、注册、修改、删除

  1 package com.jerech.dao;
  2 
  3 import java.sql.Date;
  4 import java.sql.ResultSet;
  5 import java.sql.SQLException;
  6 import java.util.ArrayList;
  7 import java.util.List;
  8 
  9 import com.jerech.entity.Member;
 10 import com.jerech.entity.MemberBase;
 11 
 12 public class UserInfoDao extends baseDAO {
 13     // 用户登录
 14     public boolean userLogin(String userName, String pwd) {
 15         String sql = "select userName,pwd from userInfo where userName=? and pwd=?";
 16         ResultSet rs = super.execQuery(sql, new Object[] { userName, pwd });
 17         try {
 18             if (rs.next()) {
 19                 return true;
 20             }
 21         } catch (SQLException e) {
 22             // TODO Auto-generated catch block
 23             e.printStackTrace();
 24         } finally {
 25             super.closeAll();
 26         }
 27         return false;
 28     }
 29 
 30     // 注册用户
 31     public void userReg(Member member) {
 32         StringBuilder sql = new StringBuilder(
 33                 "insert into userInfo(userName,pwd,email,sex,birthday,phoneNumber)");
 34         sql.append("values(?,?,?,?,?,?)");
 35         String execsql = sql.toString();
 36         // 将util包下的Date转成SQL下的Date
 37         java.sql.Date bornDate = new java.sql.Date(member.getBirthday()
 38                 .getTime());
 39 
 40         Object[] params = { member.getMemberName(), member.getPwd(),
 41                 member.getEmail(), member.getSex(), bornDate,
 42                 member.getPhoneNumber() };
 43         super.execUpdate(execsql, params);
 44     }
 45 
 46     // 获取用户
 47     public List getAllUser() {
 48         String sql = "select * from userInfo";
 49         ResultSet rs = super.execQuery(sql, null);
 50         List userlist = new ArrayList();
 51 
 52         try {
 53             while (rs.next()) {
 54                 Member member = new Member();
 55                 member.setMemberId(String.valueOf(rs.getInt("uid")));
 56                 member.setMemberName(rs.getString("userName"));
 57                 member.setPwd(rs.getString("pwd"));
 58                 member.setBirthday(rs.getDate("birthday"));
 59                 member.setEmail(rs.getString("email"));
 60                 member.setSex(rs.getString("sex"));
 61                 member.setPhoneNumber(rs.getString("phoneNumber"));
 62 
 63                 userlist.add(member);
 64             }
 65         } catch (SQLException e) {
 66             // TODO Auto-generated catch block
 67             e.printStackTrace();
 68         } finally {
 69             super.closeAll();
 70         }
 71         return userlist;
 72     }
 73 
 74     // 删除用户
 75     public void userDel(String id) {
 76         String sql = "delete from userInfo where uid=?";
 77         Object[] params = { id };
 78         super.execUpdate(sql, params);
 79     }
 80 
 81     // 查找用户
 82     public Member findMemberById(String uid) {
 83         String sql = "select * from userinfo where uid=?";
 84         Object[] params = { uid };
 85         ResultSet rs = super.execQuery(sql, params);
 86         try {
 87             if (rs.next()) {
 88                 float store = 1f;
 89                 Member member = new Member(rs.getString("userName"),
 90                         rs.getString("uid"), rs.getString("pwd"),
 91                         rs.getDate("birthday"), rs.getString("sex"),
 92                         rs.getString("phoneNumber"), rs.getString("email"),
 93                         rs.getFloat("money"));
 94 
 95                 return member;
 96             }
 97         } catch (SQLException e) {
 98             // TODO Auto-generated catch block
 99             e.printStackTrace();
100         }
101         return null;
102     }
103 
104     // 更新用户
105     public void userUpdate(Member member) {
106         String sql = "update userInfo set userName=?,email=?,sex=?,birthday=?,phoneNumber=? where uid=? ";
107         java.sql.Date addDate = new java.sql.Date(member.getBirthday()
108                 .getTime());
109         int uid = Integer.parseInt(member.getMemberId());
110         Object[] params = { member.getMemberName(), member.getEmail(),
111                 member.getSex(), addDate, member.getPhoneNumber(), uid };
112         super.execUpdate(sql, params);
113     }
114 }

 

转载于:https://www.cnblogs.com/stayreal/p/3913650.html