我有一个启动与服务器连接的方法的主类。 在JFrame类我有一个按钮注册,当按下它将检索用户输入并将其发送到服务器。 我的问题是,与服务器的连接不能正常工作,因为传递主方法中的变量时出现错误。 我试图在JFrame类中声明连接的变量,并在构造函数中将它们分配给主类变量,但这也不起作用。如何将主类中的TCP连接变量传递给另一个JFrame类?
主类:
public class TCPClient {
Socket clientSocket;
DataOutputStream outToServer;
BufferedReader inFromServer;
String test;
public void start() throws Exception{
clientSocket= new Socket("localhost", 6789);
outToServer= new DataOutputStream(clientSocket.getOutputStream());
inFromServer= new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
test="abc";
}
public static void main(String[] args) throws Exception {
TCPClient c=new TCPClient();
c.start();
NewJFrame j=new NewJFrame();
j.setVisible(true);
}}
JFrame类:
public class NewJFrame extends javax.swing.JFrame {
JTextField username = new JTextField();
JTextField name = new JTextField();
JTextField Email = new JTextField();
JTextField Address = new JTextField();
JTextField password = new JPasswordField();
BufferedReader inFromUser;
Socket clientSocket;
DataOutputStream outToServer;
BufferedReader inFromServer;
String test;
public NewJFrame() throws Exception {
TCPClient c=new TCPClient();
c.start();
inFromServer=c.inFromServer;
clientSocket=c.clientSocket;
outToServer=c.outToServer;
inFromServer=c.inFromServer;
test=c.test;
initComponents();
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
System.out.print(test);
Object[] message = {
"Full Name:", name,
"Email:", Email,
"Address:", Address,
"Username:", username,
"Password:", password
};
int option = JOptionPane.showConfirmDialog(null, message,"Sign in",JOptionPane.OK_CANCEL_OPTION);
try{
System.out.print(test);
outToServer.writeBytes("signup"+ '\n');
outToServer.writeBytes(name.getText() + '\n');
outToServer.writeBytes(Email.getText() + '\n');
outToServer.writeBytes(Address.getText() + '\n');
outToServer.writeBytes(username.getText() + '\n');
outToServer.writeBytes(password.getText() + '\n');
JOptionPane.showMessageDialog(null, inFromServer.readLine());
clientSocket.close();
}
catch(Exception e)
{
}
请展开“没有工作”。发生了什么?你期望会发生什么? – jzd
服务器没有从客户端“outToServer.writeBytes()”接收,但是当我初始化jButton1ActionPerformed方法中的连接而不是主类时,它的工作原理 –
不确定这是否会帮助解决这个问题,但是捕获Exceptions和什么都不做是一个好主意。至少添加一个println以确保您没有发生异常。 – jzd