我试图从下面的Class中传递从名为username的JTextField获取的用户名变量，我尝试了很多东西并且一直都失败了：（
第一堂课：
package com.cashdrw;
// GUI Login interface
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.IOException;
public class ldapLoginPost implements ActionListener {
public ldapLoginPost() {
}
JFrame frmCashdrawerTool;
JPanel panel;
JButton button;
JTextField username;
JPasswordField password;
JLabel usernameLbl;
JLabel passwordLbl;
JLabel resultLbl;
int result;
private JLabel label;
private JLabel label_1;
private JLabel label_2;
private JLabel lblNewLabel;
public static void main (String[] args){
ldapLoginPost gui = new ldapLoginPost();
gui.go();
}
public void go(){
frmCashdrawerTool = new JFrame();
frmCashdrawerTool.setTitle("Cashdrawer Tool");
frmCashdrawerTool.setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("/images/photo.jpg")));
frmCashdrawerTool.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frmCashdrawerTool.setResizable(false);
button = new JButton("Login");
button.setFont(new Font("Tahoma", Font.BOLD, 14));
button.setBounds(153, 165, 92, 25);
button.addActionListener(this);
username = new JTextField(20);
username.setBounds(152, 95, 151, 22);
username.setText("");
password = new JPasswordField(20);
password.setBounds(152, 130, 151, 22);
password.setText("");
resultLbl = new JLabel(" ");
resultLbl.setFont(new Font("Tahoma", Font.PLAIN, 14));
resultLbl.setBounds(129, 203, 174, 22);
usernameLbl = new JLabel("Username");
usernameLbl.setFont(new Font("Tahoma", Font.BOLD, 14));
usernameLbl.setBounds(65, 97, 75, 16);
passwordLbl = new JLabel("Password");
passwordLbl.setFont(new Font("Tahoma", Font.BOLD, 14));
passwordLbl.setBounds(65, 132, 75, 16);
panel = new JPanel();
panel.setBackground(Color.WHITE);
frmCashdrawerTool.getContentPane().add(BorderLayout.CENTER, panel);
panel.setLayout(null);
panel.add(usernameLbl);
panel.add(username);
username.requestFocusInWindow();
label = new JLabel("");
label.setBounds(353, 16, 0, 0);
panel.add(label);
panel.add(passwordLbl);
panel.add(password);
label_1 = new JLabel("");
label_1.setBounds(349, 43, 0, 0);
panel.add(label_1);
label_2 = new JLabel("");
label_2.setBounds(354, 43, 0, 0);
panel.add(label_2);
panel.add(button);
panel.add(resultLbl);
lblNewLabel = new JLabel("");
lblNewLabel.setIcon(new ImageIcon(getClass().getResource("/images/rsz_vf.jpg")));
lblNewLabel.setBounds(0, 0, 391, 73);
panel.add(lblNewLabel);
frmCashdrawerTool.setSize(397,273);
frmCashdrawerTool.setVisible(true);
}
public void actionPerformed(ActionEvent event) {
char[] passwordVar = password.getPassword();
String passString = new String (passwordVar);
String currentUser = (username.getText());
if (currentUser.isEmpty() || passString.isEmpty()) {
result = 2;
}else if (currentUser.equalsIgnoreCase("xxx")){
String[] inputLine;
inputLine = new String[2];
inputLine[0] = currentUser;
inputLine[1] = passString;
ldapConnPost connect = new ldapConnPost();
result = connect.setUpConnection(inputLine);
}else {
result = 3;
}
if (result ==1) {
username.setText("");
password.setText("");
resultLbl.setForeground(Color.GREEN);
resultLbl.setText("Authenticated Successfully");
frmCashdrawerTool.setVisible(false);
frmCashdrawerTool.dispose();
String[] inputLine;
inputLine = new String[1];
inputLine[0] = "INFO --- " + currentUser + " Was Granted Access!";
logger obj= new logger();
obj.writer(inputLine);
cashDrw gui = new cashDrw();
gui.go();
}
if (result == 2){
JOptionPane.showMessageDialog(null, "Please Enter Your Data!","ERROR",JOptionPane.ERROR_MESSAGE);
System.out.println("Connection Class not called");
}
if (result == 3){
username.setText("");
password.setText("");
JOptionPane.showMessageDialog(null, "You Are not allowed to use this tool!","ERROR",JOptionPane.ERROR_MESSAGE);
System.out.println("Connection Class not called");
String[] inputLine;
inputLine = new String[1];
inputLine[0] = "ERROR --- " + currentUser + " Was Denied Access!";
logger obj= new logger();
obj.writer(inputLine);
}
if (result == 0) {
JOptionPane.showMessageDialog(null, "Authentication Failed!","ERROR",JOptionPane.ERROR_MESSAGE);
password.setText("");
String[] inputLine;
inputLine = new String[1];
inputLine[0] = "ERROR --- " + currentUser + " LDAP Authentication Failed!";
logger obj= new logger();
obj.writer(inputLine);
}
}
}
到下面的课程，以便我可以在那里使用它：
package com.cashdrw;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class cashDrw extends JFrame implements ActionListener {
public cashDrw() {
}
JFrame frmCashdrawerTool;
JPanel panel;
JButton btnUpdate;
JTextField userid;
JTextField storeid;
JLabel useridLbl;
JLabel storeidLbl;
JLabel resultLbl;
int cashdrwresult;
private JLabel label;
private JLabel label_1;
private JLabel label_2;
private JLabel lblNewLabel;
public static void main (String[] args) {
}
public void go() {
frmCashdrawerTool = new JFrame();
frmCashdrawerTool.setTitle("Cashdrawer Tool");
frmCashdrawerTool.setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("/images/photo.jpg")));
frmCashdrawerTool.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frmCashdrawerTool.setResizable(false);
btnUpdate = new JButton("Update");
btnUpdate.setFont(new Font("Tahoma", Font.BOLD, 14));
btnUpdate.setBounds(153, 165, 92, 25);
btnUpdate.addActionListener(this);
userid = new JTextField(20);
userid.setBounds(152, 95, 151, 22);
userid.setText("");
storeid = new JTextField(20);
storeid.setBounds(152, 130, 151, 22);
storeid.setText("");
resultLbl = new JLabel(" ");
resultLbl.setFont(new Font("Tahoma", Font.PLAIN, 14));
resultLbl.setBounds(129, 203, 174, 22);
useridLbl = new JLabel("User ID");
useridLbl.setFont(new Font("Tahoma", Font.BOLD, 14));
useridLbl.setBounds(65, 97, 75, 16);
storeidLbl = new JLabel("Store ID");
storeidLbl.setFont(new Font("Tahoma", Font.BOLD, 14));
storeidLbl.setBounds(65, 132, 75, 16);
panel = new JPanel();
panel.setBackground(Color.WHITE);
frmCashdrawerTool.getContentPane().add(BorderLayout.CENTER, panel);
panel.setLayout(null);
panel.add(useridLbl);
panel.add(userid);
userid.requestFocusInWindow();
label = new JLabel("");
label.setBounds(353, 16, 0, 0);
panel.add(label);
panel.add(storeidLbl);
panel.add(storeid);
label_1 = new JLabel("");
label_1.setBounds(349, 43, 0, 0);
panel.add(label_1);
label_2 = new JLabel("");
label_2.setBounds(354, 43, 0, 0);
panel.add(label_2);
panel.add(btnUpdate);
panel.add(resultLbl);
frmCashdrawerTool.setSize(397,273);
frmCashdrawerTool.setVisible(true);
lblNewLabel = new JLabel("");
lblNewLabel.setIcon(new ImageIcon(getClass().getResource("/images/rsz_vf.jpg")));
lblNewLabel.setBounds(0, 0, 391, 73);
panel.add(lblNewLabel);
frmCashdrawerTool.setSize(397,273);
frmCashdrawerTool.setVisible(true);
}
public void actionPerformed(ActionEvent event) {
String currentStore = (storeid.getText());
String currentUser = (userid.getText());
if (currentUser.isEmpty() || currentStore.isEmpty()) {
cashdrwresult = 2;
}else{
String[] inputLine;
inputLine = new String[2];
inputLine[0] = currentUser;
inputLine[1] = currentStore;
cashDrwsql join = new cashDrwsql();
cashdrwresult = join.cashDrwAtion(inputLine);
}
if (cashdrwresult ==1) {
JOptionPane.showMessageDialog(null, "Action Was Performed Successfully","INFO",JOptionPane.PLAIN_MESSAGE);
userid.setText("");
storeid.setText("");
String[] inputLine;
inputLine = new String[1];
inputLine[0] = "INFO --- Drawer: " + currentUser + " of Store: " + currentStore + " was unlocked!";
logger obj= new logger();
obj.writer(inputLine);
//resultLbl.setForeground(Color.GREEN);
//resultLbl.setText("Done!");
}
if (cashdrwresult == 2){
resultLbl.setForeground(Color.RED);
// resultLbl.setText("Please Enter Required Data");
userid.setText("");
storeid.setText("");
JOptionPane.showMessageDialog(null, "Please Enter Required Data!","ERROR",JOptionPane.ERROR_MESSAGE);
System.out.println("Connection Class not called");
String[] inputLine;
inputLine = new String[1];
inputLine[0] = "ERROR --- No Action Was taken, Please Enter Required Data!";
logger obj= new logger();
obj.writer(inputLine);
}
if (cashdrwresult == 0) {
// resultLbl.setForeground(Color.RED);
// resultLbl.setText("Action Was Not Performed");
JOptionPane.showMessageDialog(null, "Action Was not performed, Refer Back to Support Team!","ERROR",JOptionPane.ERROR_MESSAGE);
userid.setText("");
storeid.setText("");
String[] inputLine;
inputLine = new String[1];
inputLine[0] = "ERROR --- No Action Was taken for User: " + currentUser + " of Store: " + currentStore;
logger obj= new logger();
obj.writer(inputLine);
}
}
}
你能帮我知道怎么做吗？
答案 0 :(得分：0)
你需要去第二类“cashDrw”。创建一个名为username的JTextField变量。然后创建一个函数并将其称为“setUsername”。并将其公开，以便其他类可以访问它。并赋予功能一个参数。 JTextField用户名;例如。然后输入： this.username = username; 然后转到第一个类并调用“setUsername”函数。并将用户名传递给它!!