（初学者Java）火车站大屏幕火车信息显示系统

大一结束了，这学期的课程设计，老师要求写一个火车站火车站大屏幕火车信息显示系统，写了一个多星期，做了一个小程序，大体实现老师的要求了，就是有一些简陋和BUG。

题目要求如下

管理员负责设置经过济南西站的各趟列车的信息，当有列车晚点时，要及时进行设置晚点时间。
系统运行时屏幕循环显示即将到站的列车信息。
屏幕显示的列车信息及滚动显示方式请去火车站实地调研。

话不多说，直接上代码！

//sql类
import java.sql.*;
public class sqll {private final static String URL = "jdbc:sqlserver://localhost:1433;DatabaseName=列车信息";private static final String USER="sa";private static final String PASSWORD="111111";private static Connection con=null;private static  Statement stmt =null;private static  ResultSet rs =null;String a,b,c,d,e,f;public String aa(){return a;}public String bb(){return b;}public String cc(){return c;}public String dd(){return d;}public String ee(){return e;}public String ff(){return f;}public void first() {try {Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");con = DriverManager.getConnection(URL,USER,PASSWORD);System.out.println("数据库连接成功");}catch(Exception e) {System.out.println("数据库连接失败\n" + e.toString());}}public void chaxun(String name) throws SQLException{stmt =con.createStatement();rs = stmt.executeQuery("select * from 列车  where 车次="+"'"+name+"'");
//       while(rs.next()){//           System.out.println(rs.getString("车次")+","+rs.getString("终点站")+","+rs.getTime("到点")+","+rs.getTime("开点")+","+rs.getString("站台")+","+rs.getString("状态"));
//       }con.close();stmt.close();rs.close();}public void xinjian(String a,String b,String c,String d,String e,String f) throws SQLException{stmt =con.createStatement();stmt.executeUpdate("insert into 列车  values "+"('"+a+"','"+b+"','"+c+"','"+d+"','"+e+"','"+f+"')");stmt.close();con.close();}public void shanchu(String a) throws SQLException{stmt =con.createStatement(); stmt.executeUpdate("delete from 列车  where 车次= '"+a+"'");stmt.close();con.close();}public void xiugai1(String name)throws SQLException{stmt =con.createStatement();rs = stmt.executeQuery("select * from 列车  where 车次='"+name+"'");while(rs.next()){a=rs.getString("终点站");b=rs.getString("到点");c=rs.getString("开点");d=rs.getString("站台");e=rs.getString("状态");f=rs.getString("车次");}con.close();stmt.close();rs.close();}public void xiugai2(String a,String b,String c,String d,String e,String f) throws SQLException{stmt =con.createStatement();  stmt.executeUpdate("update 列车 set 终点站='"+b+"',开点='"+c+"',到点='"+d+"',站台='"+e+"',状态='"+f+"' where 车次='"+a+"'");stmt.close();con.close();}
}

//列车管理窗口
import java.awt.BorderLayout;public class guanli extends JFrame {private JPanel contentPane;private JTextField textField;private JTextField textField_1;private JTextField textField_2;private JTextField textField_3;private JTextField textField_4;private JTextField textField_5;private JTextField textField_6;private JTextField textField_7;private JTextField textField_9;private JTable table;private JTextField textField_8;private JTextField textField_10;private JTextField textField_11;private JTextField textField_12;private JTextField textField_13;private JTextField textField_14;/*** Launch the application.*/public static void gl() {EventQueue.invokeLater(new Runnable() {public void run() {try {guanli frame = new guanli();frame.guan();frame.setVisible(true);} catch (Exception e) {e.printStackTrace();}}});}/*** Create the frame.*/public void guan() {setTitle("\u5217\u8F66\u4FE1\u606F\u7BA1\u7406\u9762\u677F");setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100, 100, 1061, 667);contentPane = new JPanel();contentPane.setBackground(new Color(224, 255, 255));contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));setContentPane(contentPane);contentPane.setLayout(null);JLabel label = new JLabel("\u65B0\u5EFA\u5217\u8F66\u4FE1\u606F\uFF1A");label.setFont(new Font("黑体", Font.PLAIN, 24));label.setBounds(14, 13, 178, 37);contentPane.add(label);JLabel label_1 = new JLabel("\u8F66\u6B21");label_1.setFont(new Font("宋体", Font.PLAIN, 20));label_1.setBounds(14, 63, 49, 18);contentPane.add(label_1);textField = new JTextField();textField.setBounds(85, 62, 206, 24);contentPane.add(textField);textField.setColumns(10);JLabel label_2 = new JLabel("\u7EC8\u70B9\u7AD9");label_2.setFont(new Font("宋体", Font.PLAIN, 20));label_2.setBounds(14, 125, 72, 18);contentPane.add(label_2);textField_1 = new JTextField();textField_1.setBounds(85, 124, 206, 24);contentPane.add(textField_1);textField_1.setColumns(10);JLabel label_3 = new JLabel("\u5230\u70B9");label_3.setFont(new Font("宋体", Font.PLAIN, 20));label_3.setBounds(14, 192, 72, 18);contentPane.add(label_3);textField_2 = new JTextField();textField_2.setBounds(85, 191, 206, 24);contentPane.add(textField_2);textField_2.setColumns(10);JLabel label_4 = new JLabel("\u5F00\u70B9");label_4.setFont(new Font("宋体", Font.PLAIN, 20));label_4.setBounds(14, 264, 72, 18);contentPane.add(label_4);textField_3 = new JTextField();textField_3.setBounds(85, 258, 206, 24);contentPane.add(textField_3);textField_3.setColumns(10);JLabel label_5 = new JLabel("\u7AD9\u53F0");label_5.setFont(new Font("宋体", Font.PLAIN, 20));label_5.setBounds(14, 338, 72, 18);contentPane.add(label_5);textField_4 = new JTextField();textField_4.setBounds(85, 337, 206, 24);contentPane.add(textField_4);textField_4.setColumns(10);JLabel label_6 = new JLabel("\u72B6\u6001");label_6.setFont(new Font("宋体", Font.PLAIN, 20));label_6.setBounds(14, 413, 72, 18);contentPane.add(label_6);final JComboBox comboBox = new JComboBox();comboBox.setModel(new DefaultComboBoxModel(new String[] {"\u5019\u8F66", "\u6B63\u5728\u68C0\u7968", "\u505C\u6B62\u68C0\u7968", "\u665A\u70B9"}));comboBox.setBounds(85, 412, 206, 24);contentPane.add(comboBox);JButton button = new JButton("\u6DFB\u52A0");button.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent arg0) {SimpleDateFormat df = new SimpleDateFormat("HH:mm:ss");//设置日期格式
//               System.out.println(dat);Date date = null;Date datt = null;try {date = df.parse((String)textField_3.getText());datt = df.parse((String)textField_2.getText());} catch (ParseException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}
//               System.out.println(obj[q][2]);long tim=(datt.getTime()-date.getTime());if(tim>0){textField_5.setText("异常！列车时间错误");}else{String a=textField.getText();String b=textField_1.getText();String c=textField_2.getText();String d=textField_3.getText();String e=textField_4.getText();String f= comboBox.getSelectedItem().toString();sqll x=new sqll();x.first();try {x.xinjian(a, b, c, d, e, f);textField_5.setText("列车添加成功！");} catch (SQLException e1) {// TODO 自动生成的 catch 块e1.printStackTrace();textField_5.setText("列车添加失败！");}}}});button.setFont(new Font("楷体", Font.PLAIN, 29));button.setBounds(50, 482, 200, 50);contentPane.add(button);textField_5 = new JTextField();textField_5.setFont(new Font("宋体", Font.PLAIN, 20));textField_5.setBackground(new Color(224, 255, 255));textField_5.setBounds(14, 574, 277, 24);contentPane.add(textField_5);textField_5.setColumns(10);JLabel label_7 = new JLabel("\u67E5\u8BE2\u5217\u8F66\u4FE1\u606F\uFF1A");label_7.setFont(new Font("黑体", Font.PLAIN, 24));label_7.setBounds(371, 19, 183, 24);contentPane.add(label_7);JLabel label_8 = new JLabel("\u88AB\u67E5\u8BE2\u5217\u8F66\u8F66\u6B21");label_8.setFont(new Font("宋体", Font.PLAIN, 20));label_8.setBounds(381, 62, 151, 19);contentPane.add(label_8);textField_6 = new JTextField();textField_6.setBounds(569, 62, 246, 24);contentPane.add(textField_6);textField_6.setColumns(10);JButton btnNewButton = new JButton("\u67E5\u8BE2");final String[][] str1=new String[10][6];btnNewButton.addActionListener(new ActionListener() {int q=0;public void actionPerformed(ActionEvent arg0) {sqll a=new sqll();a.first();try {a.chaxun(textField_6.getText());a.first();a.xiugai1(textField_6.getText());str1[q][0]=a.ff();str1[q][1]=a.aa();str1[q][2]=a.bb();str1[q][3]=a.cc();str1[q][4]=a.dd();str1[q][5]=a.ee();if(a.ff()!=null)q++;if(q==10){q=0;}
//                  测试
//                for(int d=0;d<6;d++){//                    System.out.print(str1[0][d]);
//                }           table.setModel(new DefaultTableModel(str1 ,new String[] {"\u8F66\u6B21", "\u7EC8\u70B9\u7AD9", "\u5F00\u70B9", "\u5230\u70B9", "\u7AD9\u53F0", "\u72B6\u6001"}));} catch (SQLException e) {// TODO 自动生成的 catch 块e.printStackTrace();}}});btnNewButton.setBounds(876, 61, 113, 27);contentPane.add(btnNewButton);JLabel label_9 = new JLabel("\u4FEE\u6539\u5217\u8F66\u4FE1\u606F\uFF1A");label_9.setFont(new Font("黑体", Font.PLAIN, 24));label_9.setBounds(328, 227, 168, 24);contentPane.add(label_9);JLabel label_10 = new JLabel("\u88AB\u4FEE\u6539\u5217\u8F66\u8F66\u6B21");label_10.setFont(new Font("宋体", Font.PLAIN, 20));label_10.setBounds(328, 261, 156, 24);contentPane.add(label_10);final JComboBox comboBox_1 = new JComboBox();comboBox_1.setModel(new DefaultComboBoxModel(new String[] {"\u5019\u8F66", "\u6B63\u5728\u68C0\u7968", "\u505C\u6B62\u68C0\u7968", "\u665A\u70B9"}));comboBox_1.setBounds(546, 448, 252, 24);contentPane.add(comboBox_1);textField_7 = new JTextField();textField_7.setBounds(546, 264, 252, 24);contentPane.add(textField_7);textField_7.setColumns(10);JButton button_1 = new JButton("\u67E5\u627E");button_1.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {sqll a=new sqll();a.first();try {a.xiugai1(textField_7.getText());} catch (SQLException e1) {// TODO 自动生成的 catch 块e1.printStackTrace();}textField_8.setText(a.aa());textField_10.setText(a.bb());textField_11.setText(a.cc());textField_12.setText(a.dd());String xx=a.ff();if(xx.equals("候车")){comboBox_1.setSelectedIndex(0); }if(xx.equals("正在检票")){comboBox_1.setSelectedIndex(1); }if(xx.equals("停止检票")){comboBox_1.setSelectedIndex(2); }if(xx.equals("晚点")){comboBox_1.setSelectedIndex(3); }}});button_1.setBounds(870, 263, 134, 24);contentPane.add(button_1);JLabel label_11 = new JLabel("\u4FEE\u6539\u5217\u8F66\u72B6\u6001");label_11.setFont(new Font("宋体", Font.PLAIN, 20));label_11.setBounds(328, 449, 151, 18);contentPane.add(label_11);JButton btnNewButton_1 = new JButton("\u4FEE\u6539");btnNewButton_1.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {String q1=textField_7.getText();String q2=textField_8.getText();String q3=textField_10.getText();String q4=textField_11.getText();String q5=textField_12.getText();String q6 = comboBox_1.getSelectedItem().toString();sqll a=new sqll();a.first();try {a.xiugai2(q1, q2, q3, q4,q5, q6);textField_13.setText("修改成功！");} catch (SQLException e1) {// TODO 自动生成的 catch 块e1.printStackTrace();}}});btnNewButton_1.setFont(new Font("宋体", Font.PLAIN, 24));btnNewButton_1.setBounds(876, 338, 128, 129);contentPane.add(btnNewButton_1);JLabel label_14 = new JLabel("\u5220\u9664\u5217\u8F66\u4FE1\u606F\uFF1A");label_14.setBackground(new Color(0, 255, 255));label_14.setFont(new Font("黑体", Font.PLAIN, 24));label_14.setBounds(366, 495, 176, 27);contentPane.add(label_14);JLabel label_15 = new JLabel("\u88AB\u5220\u9664\u5217\u8F66\u8F66\u6B21");label_15.setFont(new Font("宋体", Font.PLAIN, 20));label_15.setBounds(366, 539, 156, 18);contentPane.add(label_15);textField_9 = new JTextField();textField_9.setBounds(569, 533, 246, 24);contentPane.add(textField_9);textField_9.setColumns(10);JButton btnNewButton_2 = new JButton("\u5220\u9664");btnNewButton_2.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent arg0) {String a=textField_9.getText();sqll x=new sqll();x.first();try {x.shanchu(a);textField_14.setText("删除成功！");} catch (SQLException e) {// TODO 自动生成的 catch 块e.printStackTrace();}}});btnNewButton_2.setBounds(876, 530, 113, 27);contentPane.add(btnNewButton_2);JDesktopPane desktopPane = new JDesktopPane();desktopPane.setBackground(Color.GREEN);desktopPane.setBounds(315, 0, 3, 620);contentPane.add(desktopPane);JDesktopPane desktopPane_1 = new JDesktopPane();desktopPane_1.setBackground(Color.GREEN);desktopPane_1.setBounds(315, 214, 714, 3);contentPane.add(desktopPane_1);JDesktopPane desktopPane_2 = new JDesktopPane();desktopPane_2.setBackground(Color.GREEN);desktopPane_2.setBounds(315, 482, 728, 3);contentPane.add(desktopPane_2);JButton button_2 = new JButton("\u8BBE\u7F6E\u80CC\u666F\u989C\u8272");button_2.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent arg0) {Color color = JColorChooser.showDialog(contentPane, "选取颜色", null);if (color == null) {return;}contentPane.setBackground(color);}});button_2.setForeground(Color.BLACK);button_2.setBackground(Color.PINK);button_2.setBounds(593, 580, 163, 40);contentPane.add(button_2);JDesktopPane desktopPane_3 = new JDesktopPane();desktopPane_3.setBackground(Color.GREEN);desktopPane_3.setBounds(317, 567, 726, 3);contentPane.add(desktopPane_3);JScrollPane scrollPane = new JScrollPane();scrollPane.setBounds(366, 110, 645, 94);contentPane.add(scrollPane);table = new JTable();String[] str={"\u8F66\u6B21", "\u7EC8\u70B9\u7AD9", "\u5230\u70B9", "\u5F00\u70B9", "\u7AD9\u53F0", "\u72B6\u6001"};table.setModel(new DefaultTableModel(str1,str));scrollPane.setViewportView(table);JLabel label_12 = new JLabel("\u4FEE\u6539\u5217\u8F66\u7EC8\u70B9\u7AD9");label_12.setFont(new Font("宋体", Font.PLAIN, 20));label_12.setBounds(328, 284, 200, 50);contentPane.add(label_12);textField_8 = new JTextField();textField_8.setBounds(546, 301, 252, 21);contentPane.add(textField_8);textField_8.setColumns(10);JLabel label_13 = new JLabel("\u4FEE\u6539\u5217\u8F66\u5230\u70B9");label_13.setFont(new Font("宋体", Font.PLAIN, 20));label_13.setBounds(328, 322, 200, 50);contentPane.add(label_13);textField_10 = new JTextField();textField_10.setBounds(546, 339, 252, 21);contentPane.add(textField_10);textField_10.setColumns(10);JLabel label_16 = new JLabel("\u4FEE\u6539\u5217\u8F66\u5F00\u70B9");label_16.setFont(new Font("宋体", Font.PLAIN, 20));label_16.setBounds(328, 359, 200, 50);contentPane.add(label_16);textField_11 = new JTextField();textField_11.setBounds(546, 376, 252, 21);contentPane.add(textField_11);textField_11.setColumns(10);JLabel label_17 = new JLabel("\u4FEE\u6539\u5217\u8F66\u7AD9\u53F0");label_17.setFont(new Font("宋体", Font.PLAIN, 20));label_17.setBounds(328, 397, 200, 50);contentPane.add(label_17);textField_12 = new JTextField();textField_12.setBounds(546, 414, 252, 21);contentPane.add(textField_12);textField_12.setColumns(10);textField_13 = new JTextField();textField_13.setBackground(new Color(224, 255, 255));textField_13.setFont(new Font("宋体", Font.PLAIN, 20));textField_13.setBounds(546, 233, 252, 21);contentPane.add(textField_13);textField_13.setColumns(10);textField_14 = new JTextField();textField_14.setFont(new Font("宋体", Font.PLAIN, 20));textField_14.setBackground(new Color(224, 255, 255));textField_14.setBounds(569, 502, 246, 21);contentPane.add(textField_14);textField_14.setColumns(10);}
}

//屏幕刷新方法
import java.sql.SQLException;
import java.util.Timer;
public class shuaxin {public shuaxin() throws ClassNotFoundException, SQLException {Timer time = new Timer();
time.schedule(new xianshi(), 0, 3000);
}
}

//屏幕显示类
import java.sql.*;
import java.util.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import javax.swing.*;
import javax.swing.table.TableColumn;import java.util.TimerTask;
public class xianshi extends TimerTask{private final static String URL = "jdbc:sqlserver://localhost:1433;DatabaseName=列车信息";private static final String USER="sa";private static final String PASSWORD="111111";private static Connection con=null;private static  Statement stmt =null,stmt1=null;private static  ResultSet rs =null;JFrame xs;int q=0,row=0;Object[][] obj=new Object[10][6];public xianshi() throws ClassNotFoundException, SQLException{xs=new JFrame("列车信息显示");xs.setBounds(1200,500,600,223);xs.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);xs.setVisible(true);//设置窗口可见  Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");con = DriverManager.getConnection(URL,USER,PASSWORD);System.out.println("数据库连接成功");}public void run(){String[] title={"车次","终点站","到点","开点","站台","状态"};try {stmt =con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);stmt1 =con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);rs = stmt.executeQuery("with a as(select *,row_number() over(order by getdate()) as row from 列车 ) select * from a where row >+"+row+" and row <+"+row+11);if(rs.next()){rs.previous();while(rs.next()){obj[q][0]=rs.getString("车次");obj[q][1]=rs.getString("终点站");obj[q][2]=rs.getString("到点");obj[q][3]=rs.getString("开点");obj[q][4]=rs.getString("站台");obj[q][5]=rs.getString("状态");SimpleDateFormat df = new SimpleDateFormat("HH:mm:ss");//设置日期格式String dat=df.format(new Date());
//               System.out.println(dat);Date date = null;Date datt = null;try {date = df.parse(dat);datt = df.parse((String) obj[q][2]);} catch (ParseException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}System.out.println(obj[q][2]);long tim=(datt.getTime()-date.getTime());
//              System.out.println(tim);if(obj[q][5].equals("晚点")){}else{if(tim<=600000&&tim>=0){stmt1.executeUpdate("update 列车 set 状态='正在检票' where 车次='"+obj[q][0]+"'");}else if(tim==0){stmt1.executeUpdate("update 列车 set 状态='停止检票' where 车次='"+obj[q][0]+"'");}else if(tim>600000){stmt1.executeUpdate("update 列车 set 状态='候车' where 车次='"+obj[q][0]+"'");}else if(tim<0){stmt1.executeUpdate("delete from 列车  where 车次= '"+obj[q][0]+"'");}}q++; }row+=10;}else{row=0;}q=0;} catch (SQLException e) {// TODO 自动生成的 catch 块e.printStackTrace();}JTable table = new JTable(obj, title);JScrollPane JSP= new JScrollPane(table);xs.add(JSP);xs.validate();}
}

//测试类
import java.sql.SQLException;
public class zhu {public static void main(String[]  args) throws ClassNotFoundException, SQLException{guanli a=new guanli();a.gl();new shuaxin();
}
}

显示成果

两个窗口均已连接数据库
程序已设置自动获取系统时间更改列车状态以及删除列车

关于程序的bug，欢迎评论留言指出！

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