本文实例为大家分享了java实现简单图书借阅系统的具体代码,供大家参考,具体内容如下
直接看代码:
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 |
package ttt; import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement;
import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.border.TitledBorder; import javax.swing.table.DefaultTableModel; public class Labmsys extends JFrame{ JTable booktable= null ; static DefaultTableModel bookmodel= null ; JTable borrowtable= null ; static DefaultTableModel bmodel= null ; JPanel j1= new JPanel(); JPanel j2= new JPanel(); JPanel j3= new JPanel(); JButton button1= new JButton( "借书" ); JButton button2= new JButton( "还书" );
public Labmsys() { this .setLayout( new BorderLayout()); this .add(j1,BorderLayout.WEST); this .add(j2,BorderLayout.EAST); this .add(j3,BorderLayout.CENTER); j1.setBorder( new TitledBorder( "图书借书表" )); j2.setBorder( new TitledBorder( "图书库存表" )); this .booktable=bookIn(); this .borrowtable=borrowIn(); JScrollPane jsp1= new JScrollPane(borrowtable); JScrollPane jsp2= new JScrollPane(booktable); j1.add(jsp1); j2.add(jsp2); j3.add(button1); j3.add(button2); //添加借书监听器 button1.addActionListener( new ActionListener() {
@Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub int rowNum=booktable.getSelectedRow(); System.out.println(rowNum); if (rowNum>= 0 ) { String isbn=booktable.getValueAt(rowNum, 0 ).toString(); System.out.println(isbn); int count=Integer.parseInt((String) booktable.getValueAt(rowNum, 2 )); String s=JOptionPane.showInputDialog( "请输入学号" ); if (count<= 0 ) JOptionPane.showMessageDialog( null , "图书库存不足" ); else if ( null ==s) JOptionPane.showMessageDialog( null , "请输入学号" ); else { if (borrowBook(isbn,s)) { System.out.println( "yes" ); JOptionPane.showMessageDialog( null , "successful!" ); } else JOptionPane.showMessageDialog( null , "Wrong!" ); } } else JOptionPane.showMessageDialog( null , "Choose book!" );
} }); //添加还书监听器 button2.addActionListener( new ActionListener() {
@Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub int rowNum=borrowtable.getSelectedRow(); System.out.println(rowNum); if (rowNum>= 0 ) { String isbn=borrowtable.getValueAt(rowNum, 2 ).toString(); String tablexh = borrowtable.getValueAt(rowNum, 1 ).toString(); System.out.println(isbn); String xh=JOptionPane.showInputDialog( "请输入学号" ); if (!xh.equals(tablexh)) JOptionPane.showMessageDialog( null , "学号不正确" ); else { if (returnBook(isbn)) { JOptionPane.showMessageDialog( null , "successful!" ); } else JOptionPane.showMessageDialog( null , "Wrong!" ); } } else JOptionPane.showMessageDialog( null , "Choose book!" ); } });
}
public boolean borrowBook(String isbn, String s) { int xh = Integer.parseInt(s); int isbn2 =Integer.parseInt(isbn); System.out.println( "学号:" +xh); boolean b= false ; String driver= "com.mysql.jdbc.Driver" ; String url= "jdbc:mysql://localhost:3306/test" ; String user= "root" ; String password= "123456" ;
Connection conn= null ; Statement stmt= null ;
try { Class.forName(driver); conn = DriverManager.getConnection(url, user, password); stmt = conn.createStatement();
System.out.println( "isbn:" +isbn); conn.setAutoCommit( false ); String sql1 = "update book set count=count-1 where isbn='" +isbn2+ "'" ; String sql2 = "insert into borrow(xh,isbn) values('" +xh+ "','" +isbn2+ "')" ; stmt.executeUpdate(sql1);
stmt.executeUpdate(sql2); System.out.println( "isbn2:" +isbn2); //stmt = (PreparedStatement) conn.prepareStatement("update book set count=count-1 where isbn=?");
conn测试数据mit(); stmt.close(); conn.close(); b= true ; } catch (Exception e) { try { conn.rollback(); } catch (Exception e1){e1.printStackTrace();} } return b; }
private boolean returnBook(String isbn) { int isbn2 =Integer.parseInt(isbn);
boolean b= false ; String driver= "com.mysql.jdbc.Driver" ; String url= "jdbc:mysql://localhost:3306/test" ; String user= "root" ; String password= "123456" ;
Connection conn= null ; Statement stmt= null ;
try { Class.forName(driver); conn = DriverManager.getConnection(url, user, password); stmt = conn.createStatement(); conn.setAutoCommit( false ); stmt.executeUpdate( "delete from borrow where isbn='" +isbn2+ "'" ); stmt.executeUpdate( "update book set count=count+1 where isbn='" +isbn2+ "'" ); System.out.println( "还书isbn2:" +isbn2); conn测试数据mit(); stmt.close(); conn.close(); b= true ; } catch (Exception e) { try { conn.rollback(); } catch (Exception e1){e1.printStackTrace();}} return b; }
private JTable borrowIn() { // TODO Auto-generated method stub String []head={ "id" , "xh" , "ISBN" }; String [][]data= null ; bookmodel= new DefaultTableModel(data,head); JTable t= new JTable(bookmodel); String driver= "com.mysql.jdbc.Driver" ; String url= "jdbc:mysql://localhost:3306/test" ; String user= "root" ; String password= "123456" ;
Connection conn= null ; Statement stmt= null ; ResultSet rs= null ; try { Class.forName(driver);
conn = DriverManager.getConnection(url, user, password); stmt = conn.createStatement(); rs=stmt.executeQuery( "select * from borrow" ); String[] row= new String[ 3 ]; while (rs.next()){ row[ 0 ]=rs.getString( 1 ); row[ 1 ]=rs.getString( 2 ); row[ 2 ]=rs.getString( 3 ); bookmodel.addRow(row); bookmodel.fireTableDataChanged(); } rs.close(); stmt.close(); conn.close();}
catch (Exception e) { // TODO Auto-generated catch block System.out.println(e); } return t; }
public JTable bookIn() { // TODO Auto-generated method stub String []head={ "ISBN" , "name" , "count" }; String [][]data= null ; bmodel= new DefaultTableModel(data,head); JTable t= new JTable(bmodel); String driver= "com.mysql.jdbc.Driver" ; String url= "jdbc:mysql://localhost:3306/test" ; String user= "root" ; String password= "123456" ;
Connection conn= null ; Statement stmt= null ; ResultSet rs= null ; try { Class.forName(driver);
conn = DriverManager.getConnection(url, user, password); stmt = conn.createStatement(); rs=stmt.executeQuery( "select * from book" ); String[] row= new String[ 3 ]; while (rs.next()){ row[ 0 ]=rs.getString( 1 ); row[ 1 ]=rs.getString( 2 ); row[ 2 ]=rs.getString( 3 ); bmodel.addRow(row); bmodel.fireTableDataChanged(); } rs.close(); stmt.close(); conn.close();}
catch (Exception e) { // TODO Auto-generated catch block System.out.println(e); } return t; }
public static void main(String[] args) { // TODO Auto-generated method stub Labmsys n= new Labmsys(); n.setTitle( "图书借阅管理系统" ); n.setSize( 1000 , 500 ); n.setLocationRelativeTo( null ); n.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); n.setVisible( true ); }
} |
数据库:
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 |
-- -- Table structure for table `book` --
DROP TABLE IF EXISTS `book`; CREATE TABLE `book` ( `ISBN` int (11) NOT NULL , ` name ` varchar (50) NOT NULL , ` count ` int (11) default NULL , PRIMARY KEY (`ISBN`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- -- Dumping data for table `book` --
LOCK TABLES `book` WRITE; /*!40000 ALTER TABLE `book` DISABLE KEYS */; INSERT INTO `book` VALUES (662530, 'c#' ,9),(662545, 'python' ,12),(663520, 'c++' ,6),(663548, 'java' ,8); /*!40000 ALTER TABLE `book` ENABLE KEYS */; UNLOCK TABLES;
-- -- Table structure for table `borrow` --
DROP TABLE IF EXISTS `borrow`; CREATE TABLE `borrow` ( `id` int (11) NOT NULL auto_increment, `xh` int (11) NOT NULL , `isbn` int (11) NOT NULL , PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- -- Dumping data for table `borrow` --
LOCK TABLES `borrow` WRITE; /*!40000 ALTER TABLE `borrow` DISABLE KEYS */; INSERT INTO `borrow` VALUES (1006,123456,662545),(1007,456789,663520),(1009,789456,662530),(1010,741852,662530); |
运行结果显示:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
原文链接:https://blog.csdn.net/broccoli2/article/details/70210058