我的代码,在我构造的客户端介面中,只有第一次按下按钮,能正常收发,第二次按下按钮后,就报错了,请老师指教

Question

server端
package socketcs;import java.awt.BorderLayout;
import java.io.*;
import java.net.*;
import java.awt.event.*;
import java.lang.*;
import javax.swing.*;
public class serversk extends JFrame
{
    JLabel title=new JLabel("服务器监视登录");
    javax.swing.JScrollPane jsp;
    public static javax.swing.JTextArea jta1;
    public serversk()
    {
        this.setLayout(new BorderLayout());
        jsp=new JScrollPane();
        jta1=new JTextArea();
        jta1.setSize(640,480);
        jsp.setViewportView(jta1);
        jta1.setVisible(true);
        this.getContentPane().add(title,BorderLayout.NORTH);
        title.setVisible(true);
        this.getContentPane().add(jsp,BorderLayout.CENTER);
    }
    
    
    public static void main(String[] args)
    {
        serversk sk=new serversk();
        
        sk.setSize(800,600);
        sk.setVisible(true);
        try{
            ServerSocket ss=new ServerSocket(9516);
            Socket s=ss.accept();
            inout ios=new inout(s);
            new Thread(ios).start();
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        sk.setDefaultCloseOperation(sk.EXIT_ON_CLOSE);
    }
}class inout implements Runnable
{
    Socket iosocket=null;
    java.io.BufferedReader br=null;
    java.io.BufferedWriter bw=null;
    public inout(Socket ss)
    {
        this.iosocket=ss;
    }    public void run() {
        try
        {
            bw=new BufferedWriter(new java.io.OutputStreamWriter(iosocket.getOutputStream()));
            br=new BufferedReader(new java.io.InputStreamReader(iosocket.getInputStream()));
            if(true)
            {
                String gets=br.readLine();
                serversk.jta1.append(gets);
            }
            bw.write("收到");
            bw.flush();
            bw.close();
            br.close();
            this.iosocket.close();
        }
        catch(Exception ex)
        {
            
        }
    }
}
client端
package h;
import java.io.*;
import java.net.*;
import javax.swing.*;public class cinout extends javax.swing.JFrame {
     
    java.net.Socket c=new Socket();
    java.net.SocketAddress link_sa=null;
    BufferedWriter cout=null;
    BufferedReader cin=null;
    String link_sports="9516";
    String link_server_ip=null;
    boolean flag=false;
    public cinout() {
        initComponents();
        
    }
                             
    private void initComponents() {
//介面代码略
}                  
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
       
         try{
             if(cjtf1.getText().length()>0)
             {
                 if(flag==false)
                 {
                     link_server_ip=java.net.InetAddress.getByName("www.abc.net").getHostAddress().toString();
                     link_sa=new java.net.InetSocketAddress(link_server_ip,java.lang.Integer.parseInt(link_sports));
                     c.connect(link_sa);
                     flag=true;
                 }
                     cin=new BufferedReader(new java.io.InputStreamReader(c.getInputStream()));
                     cout=new BufferedWriter(new java.io.OutputStreamWriter(c.getOutputStream()));
                     cout.write(cjtf1.getText()+"\n");
                     cout.flush();
                     if(true)
                     {
                         String appstr=cin.readLine();
                         cjta1.append(appstr);
                     }
                     cout.close();
                     cin.close();
                     c.close();
             }
             else
             {
                 cjtf1.setText("请输入信息");
             }
             
         }
         catch(Exception e)
         {
             e.printStackTrace();
         }
         
    }                                        
        public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new cinout().setVisible(true);
            }
        });
    }
    
    // 变量声明 - 不进行修改                     
    private javax.swing.JTextArea cjta1;
    private javax.swing.JTextField cjtf1;
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JScrollPane jScrollPane1;
    // 变量声明结束                   
    
}客户端第二次按下按钮后,报错如下:
java.net.SocketException: Socket is closed
        at java.net.Socket.getInputStream(Socket.java:753)
        at hhchat.cinout.jButton1ActionPerformed(cinout.java:104)
        at hhchat.cinout.access$000(cinout.java:15)
        at hhchat.cinout$1.actionPerformed(cinout.java:50)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
        at java.awt.Component.processMouseEvent(Component.java:5488)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3093)
        at java.awt.Component.processEvent(Component.java:5253)
        at java.awt.Container.processEvent(Container.java:1966)
        at java.awt.Component.dispatchEventImpl(Component.java:3955)
        at java.awt.Container.dispatchEventImpl(Container.java:2024)
        at java.awt.Component.dispatchEvent(Component.java:3803)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
        at java.awt.Container.dispatchEventImpl(Container.java:2010)
        at java.awt.Window.dispatchEventImpl(Window.java:1766)
        at java.awt.Component.dispatchEvent(Component.java:3803)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

Answer 1

此回复为自动发出,仅用于显示而已，并无任何其他特殊作用
楼主【cqandy】截止到2008-07-30 18:19:59的历史汇总数据(不包括此帖)：
发帖的总数量:17                       发帖的总分数:650                      每贴平均分数:38                       
回帖的总数量:16                       得分贴总数量:1                        回帖的得分率:6%                       
结贴的总数量:15                       结贴的总分数:500                      
无满意结贴数:1                        无满意结贴分:50                       
未结的帖子数:2                        未结的总分数:150                      
结贴的百分比:88.24 %               结分的百分比:76.92 %                  
无满意结贴率:6.67  %               无满意结分率:10.00 %                  
楼主加油
取消马甲机器人，请点这里：http://www.java2000.net/mycsdn/robotStop.jsp?usern=cqandy

Answer 2

  c.close(); 
 不是被你关掉了吗

Answer 3

我把c.close();取消掉,一样也报错呀

Answer 4

你的Server端就accept了一次链接啊，第二次来连当然不能连上了。
        try{
            ServerSocket ss=new ServerSocket(9516);
            Socket s=ss.accept();
            inout ios=new inout(s);
            new Thread(ios).start();
        }
        catch(Exception e)
        {
            e.printStackTrace();
        } 应该是这样：
public void run() {
        while(true){
            try{
            ServerSocket ss=new ServerSocket(9516);
            Socket s=ss.accept();
            inout ios=new inout(s);
            new Thread(ios).start();
        }
        catch(Exception e)
        {
            e.printStackTrace();
        } 
        }
    }

Answer 5

我把c.close();取消掉,报的错:java.net.SocketException: Software caused connection abort: socket write error
        at java.net.SocketOutputStream.socketWrite0(Native Method)
        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
        at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
        at sun.nio.cs.StreamEncoder$CharsetSE.writeBytes(StreamEncoder.java:336)
        at sun.nio.cs.StreamEncoder$CharsetSE.implFlushBuffer(StreamEncoder.java:404)
        at sun.nio.cs.StreamEncoder$CharsetSE.implFlush(StreamEncoder.java:408)
        at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:152)
        at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:213)
        at java.io.BufferedWriter.flush(BufferedWriter.java:236)
        at hhchat.cinout.jButton1ActionPerformed(cinout.java:107)
        at hhchat.cinout.access$000(cinout.java:15)
        at hhchat.cinout$1.actionPerformed(cinout.java:50)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
        at java.awt.Component.processMouseEvent(Component.java:5488)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3093)
        at java.awt.Component.processEvent(Component.java:5253)
        at java.awt.Container.processEvent(Container.java:1966)
        at java.awt.Component.dispatchEventImpl(Component.java:3955)
        at java.awt.Container.dispatchEventImpl(Container.java:2024)
        at java.awt.Component.dispatchEvent(Component.java:3803)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
        at java.awt.Container.dispatchEventImpl(Container.java:2010)
        at java.awt.Window.dispatchEventImpl(Window.java:1766)
        at java.awt.Component.dispatchEvent(Component.java:3803)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

Answer 6

5楼说的对，应该搞一个while来监听accept

Answer 7

老师,我把我改过后,一样报错的代码全贴出来,请老师在您的机器上调试下,指点!谢谢server:
package socketcs;import java.awt.BorderLayout;
import java.io.*;
import java.net.*;
import java.awt.event.*;
import java.lang.*;
import javax.swing.*;
public class serversk extends JFrame implements Runnable
{
    JLabel title=new JLabel("服务器监视登录");
    javax.swing.JScrollPane jsp;
    public static javax.swing.JTextArea jta1;
    public serversk()
    {
        this.setLayout(new BorderLayout());
        jsp=new JScrollPane();
        jta1=new JTextArea();
        jta1.setSize(640,480);
        jsp.setViewportView(jta1);
        jta1.setVisible(true);
        this.getContentPane().add(title,BorderLayout.NORTH);
        title.setVisible(true);
        this.getContentPane().add(jsp,BorderLayout.CENTER);
    }
    
    
    public static void main(String[] args)
    {
        serversk sk=new serversk();
        
        sk.setSize(800,600);
        sk.setVisible(true);
        sk.run();
            
        
        //sk.setDefaultCloseOperation(sk.EXIT_ON_CLOSE);
    }    public void run() {
        while(true)
        {
            try{
            ServerSocket ss=new ServerSocket(9517); 
            Socket s=null;
            s=ss.accept();
            inout ios=new inout(s); 
            new Thread(ios).start(); 
            }
            catch(Exception e)
            {
                
            }
        }
    }
}class inout implements Runnable
{
    Socket iosocket=null;
    java.io.BufferedReader br=null;
    java.io.BufferedWriter bw=null;
    public inout(Socket ss)
    {
        this.iosocket=ss;
    }    public void run() {
        try
        {
            bw=new BufferedWriter(new java.io.OutputStreamWriter(iosocket.getOutputStream()));
            br=new BufferedReader(new java.io.InputStreamReader(iosocket.getInputStream()));
            if(true)
            {
                String gets=br.readLine();
                serversk.jta1.append(gets);
            }
            bw.write("收到");
            bw.flush();
            bw.close();
            br.close();
            this.iosocket.close();
        }
        catch(Exception ex)
        {
            
        }
    }
}

Answer 8

//client端
package h;
import java.io.*;
import java.net.*;
import javax.swing.*;
/**
 *
 * @author  Administrator
 */
public class cinout extends javax.swing.JFrame {
    
    /** Creates new form cinout */
    
    java.net.Socket c=new Socket();
    java.net.SocketAddress link_sa=null;
    BufferedWriter cout=null;
    BufferedReader cin=null;
    String link_sports="9517";
    String link_server_ip=null;
    boolean flag=false;
    public cinout() {
        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.
     */
    // <editor-fold defaultstate="collapsed" desc=" 生成的代码 ">                          
    private void initComponents() {
        jLabel1 = new javax.swing.JLabel();
        cjtf1 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        cjta1 = new javax.swing.JTextArea();        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jLabel1.setText("\u5185\u5bb9:");        jButton1.setText("\u53d1\u9001");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });        cjta1.setColumns(20);
        cjta1.setRows(5);
        jScrollPane1.setViewportView(cjta1);        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, layout.createSequentialGroup()
                        .add(30, 30, 30)
                        .add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 325, Short.MAX_VALUE))
                    .add(org.jdesktop.layout.GroupLayout.LEADING, layout.createSequentialGroup()
                        .addContainerGap()
                        .add(jLabel1)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(cjtf1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 248, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jButton1)))
                .addContainerGap(45, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 242, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 15, Short.MAX_VALUE)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel1)
                    .add(cjtf1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jButton1))
                .addContainerGap())
        );
        pack();
    }// </editor-fold>                            private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
// TODO 将在此处添加您的处理代码：
        
         try{
             if(cjtf1.getText().length()>0)
             {
                 if(flag==false)
                 {
                     link_server_ip=java.net.InetAddress.getByName("www.abc.net").getHostAddress().toString();
                     link_sa=new java.net.InetSocketAddress(link_server_ip,java.lang.Integer.parseInt(link_sports));
                     c.connect(link_sa);
                     flag=true;
                 }
                     cin=new BufferedReader(new java.io.InputStreamReader(c.getInputStream()));
                     cout=new BufferedWriter(new java.io.OutputStreamWriter(c.getOutputStream()));
                     cout.write(cjtf1.getText()+"\n");
                     cout.flush();
                     if(true)
                     {
                         String appstr=cin.readLine();
                         cjta1.append(appstr);
                     }
                     //cout.close();
                     //cin.close();
                     //c.close();
                     
                     flag=false;
             }
             else
             {
                 cjtf1.setText("请输入信息");
             }
             
         }
         catch(Exception e)
         {
             e.printStackTrace();
         }
         
    }                                        
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new cinout().setVisible(true);
            }
        });
    }
    
    // 变量声明 - 不进行修改                     
    private javax.swing.JTextArea cjta1;
    private javax.swing.JTextField cjtf1;
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JScrollPane jScrollPane1;
    // 变量声明结束                   
    
}

Answer 9

    private void initComponents() { 
        jLabel1 = new javax.swing.JLabel(); 
        cjtf1 = new javax.swing.JTextField(); 
        jButton1 = new javax.swing.JButton(); 
        jScrollPane1 = new javax.swing.JScrollPane(); 
        cjta1 = new javax.swing.JTextArea();         setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); 
        jLabel1.setText("\u5185\u5bb9:");         jButton1.setText("\u53d1\u9001"); 
        jButton1.addActionListener(new java.awt.event.ActionListener() { 
            public void actionPerformed(java.awt.event.ActionEvent evt) { 
                jButton1ActionPerformed(evt); 
            } 
        }); 

Answer 10

呵呵，程序调试技能需要提高啊！给你调了一下，你的客户端有点问题
你的客户端类第一句java.net.Socket c=new Socket(); 这样在初始化对象的时候创建了c是一个Socket
第一次点的时候用c.connect连接了，第二次点还是这个对象，再用c.connect就不行了
或者报错说连接已经存在（如果你没close），或者说连接已经reset了（如果你close了连接）
你应该在c.connect前重新new 一下c这个Socket。而且这个变量好像是函数内变量就可以了，不需要做类变量的。