0
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.DocumentEvent;
import javax.swing.text.Document;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
@SuppressWarnings("serial")
public class Save extends JPanel {
Connection con;
Statement st;
ResultSet rs;
String TrailerName;
String BlockName;
String LocationName;
String newline = "\n";
String text;
JComboBox<?> TrailerList;
JComboBox<?> BlockList;
JComboBox<?> LocationList;
JTextField textField;
JTextArea textArea;
public Save() {
super(new BorderLayout());
textField = new JTextField(20);
textArea = new JTextArea(5, 20);
textArea.setEditable(false);
textField.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
text = textField.getText();
textArea.append(text + newline);
textField.selectAll();
textArea.setCaretPosition(textArea.getDocument().getLength());
System.out.println("Comment: " + text);
}
});
String[] Trailer = { "A1", "A2", "B1", "B2", "C1", "Please select a Trailer" };
String[] Block = { "A", "B", "C", "D", "E", "Please select a Block" };
String[] Location = { "Door A3", "Door B2", "Door C4", "Door D2", "Door E9", "Please select a Location" };
TrailerList = new JComboBox<Object>(Trailer);
TrailerList.setSelectedIndex(5);
TrailerList.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
TrailerName = (String) TrailerList.getSelectedItem();
System.out.println("Trailer: " + TrailerName);
}
});
BlockList = new JComboBox<Object>(Block);
BlockList.setSelectedIndex(5);
BlockList.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
BlockName = (String) BlockList.getSelectedItem();
System.out.println("Block: " + BlockName);
}
LocationList = new JComboBox<Object>(Location);
LocationList.setSelectedIndex(5);
LocationList.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
LocationName = (String) LocationList.getSelectedItem();
System.out.println("Location: " + LocationName);
}
}）;
JButton buttonSave = new JButton("Save");
add(buttonSave);
buttonSave.setActionCommand("Save");
add(buttonSave);
buttonSave.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
String action = evt.getActionCommand();
if (action.equals("Save")) {
System.out.println("Button pressed!");
try {
String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
Class.forName(driver);
String db = "jdbc:odbc:TTracking";
con = DriverManager.getConnection(db);
DatabaseMetaData meta = con.getMetaData();
System.out.println("Server name: " +
meta.getDatabaseProductName());
System.out.println("Server version: " +
meta.getDatabaseProductVersion());
System.out.println("");
System.out.println("Inserting records into the table...");
PreparedStatement st = con.prepareStatement(
"INSERT INTO TrailerLocation (Trailer, Block, Location, Day, SetTime, Comment) " +
"VALUES (?, ?, ?, NOW(), NOW(), ?)");
st.setString(1, TrailerName);
st.setString(2, BlockName);
st.setString(3, LocationName);
st.setString(4, text);
st.addBatch();
st.executeBatch();
JOptionPane.showMessageDialog(null,"Inserted record into the table: "
+ "\nTrailer : " + TrailerName
+ "\nBlock : " + BlockName
+ "\nLocation : " + LocationName
+ "\nComment : " + text);
}catch(SQLException se){
//Handle errors for JDBC
se.printStackTrace();
}catch(Exception e1){
//Handle errors for Class.forName
e1.printStackTrace();
}finally{
//finally block used to close resources
try{
if(st!=null)
con.close();
}catch(SQLException se){
}// do nothing
try{
if(con!=null)
con.close();
}catch(SQLException se){
se.printStackTrace();
}//end finally try
}//end try
System.out.println("Goodbye!");
}}
});
add(TrailerList, BorderLayout.WEST);
add(BlockList, BorderLayout.CENTER);
add(LocationList, BorderLayout.EAST);
add(buttonSave,BorderLayout.SOUTH);
add(textField, BorderLayout.NORTH);
setBorder(BorderFactory.createEmptyBorder(20,20,20,20));
}
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("Save");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setUndecorated(true);
//Create and set up the content pane.
JComponent newContentPane = new Save();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
爲我創造我有一個文本字段爲人們添加評論，但問題是註釋，以節省您需要按下回車鍵形式是有辦法做到這一點不按下輸入按鈕？
試圖文件，偵聽器和動作偵聽器，但不能得到代碼工作
使用「保存」按鈕，收集所有信息並將其保存在一步 – MadProgrammer
窗體確實有一個保存按鈕，但不能識別文本字段中的內容，除非我按下輸入，我想要避免 –
那麼如何你知道用戶何時完成打字嗎？ – MadProgrammer