Question

朋友们，我正在java swing中创建一个软件，我想从server.i退出客户端机器上的java软件。这个代码没有用。当客户端运行程序时它不会打开但是当我关闭时来自服务器和客户端的程序运行它，它正常打开，但它没有从服务器退出。

    import java.net.*;
import java.io.*;

public class cl extends javax.swing.JFrame {

    /** Creates new form cl */
    public cl() {


    initComponents();
}

/** This method is called from within the constructor to
 * initialize the form.
 * WARNING: Do NOT modify this code. The content of this method is
 * always regenerated by the Form Editor.
 */
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

    jPanel1 = new javax.swing.JPanel();
    jLabel5 = new javax.swing.JLabel();
    jLabel1 = new javax.swing.JLabel();
    jLabel2 = new javax.swing.JLabel();

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
    setBackground(new java.awt.Color(255, 204, 204));

    jPanel1.setBackground(new java.awt.Color(255, 204, 204));

    jLabel5.setIcon(new javax.swing.ImageIcon("C:\\Users\\Administrator\\Desktop\\new-1.jpg")); // NOI18N

    jLabel1.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
    jLabel1.setText("Welcome to our cafe");

    jLabel2.setFont(new java.awt.Font("Arial", 1, 14)); // NOI18N
    jLabel2.setText("Contact Administrator to start your session");

    javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
    jPanel1.setLayout(jPanel1Layout);
    jPanel1Layout.setHorizontalGroup(
        jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(jPanel1Layout.createSequentialGroup()
            .addContainerGap()
            .addComponent(jLabel5)
            .addGroup(jPanel1Layout.createParallelGroup
   (javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addGap(92, 92, 92)
                    .addComponent(jLabel1))
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addGap(42, 42, 42)
                    .addComponent(jLabel2)))
            .addContainerGap(872, Short.MAX_VALUE))
    );
    jPanel1Layout.setVerticalGroup(
        jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(jPanel1Layout.createSequentialGroup()
            .addGroup(jPanel1Layout.createParallelGroup
(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(jLabel5))
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addGap(32, 32, 32)
                    .addComponent(jLabel1)
                    .addGap(18, 18, 18)
                    .addComponent(jLabel2)))
            .addContainerGap(597, Short.MAX_VALUE))
    );

    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, 
         javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    );
    layout.setVerticalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE,  
       javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)      


    );

    pack();
}// </editor-fold>

/**
 * @param args the command line arguments
 */
public static void main(String args[]) {


try
    {

    String s1,s2;
    Socket s=new Socket("192.168.1.2",1024);
                  DataInputStream dis=new DataInputStream(s.getInputStream());
    DataOutputStream dos=new DataOutputStream(s.getOutputStream());
    BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

    while(true)
    {



s1=dis.readUTF();

if (s1.equals("5"))
{
System.exit(0);
}
    }
    }
    catch(Exception e)
    {
        e.printStackTrace();
    }
}
// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel5;
private javax.swing.JPanel jPanel1;
// End of variables declaration

}

Answer 1

你的插座保持打开状态。

您应该在s.close();

之前加System.exit(0);

dis.close();和dos.close();（s.close();之前）。

java客户端程序

1 个答案: