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<Book> getAllBook() {

 32         String sql = "select * from bookInfo";

 33         ResultSet rs = super.execQuery(sql, null);

 34         List<Book> booklist = new ArrayList<Book>();

 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<Member> getAllUser() {

 48         String sql = "select * from userInfo";

 49         ResultSet rs = super.execQuery(sql, null);

 50         List<Member> userlist = new ArrayList<Member>();

 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 }