我正在尝试做一些服务器/套接字编程。服务器代码是在 Ubuntu 机器上用纯 Java 编写的。客户端代码是为我的 LG Thrill 编写的。服务器似乎工作正常。我已经通过在普通 java 中编写一个简单的测试客户端来测试服务器，该客户端基本上使用带有“localhost”ip 的 try/catch 块。我通过从我的手机 ssh 进入服务器机器检查了该 ip 是否可以访问（是的，它是可以访问的）。
我的服务器代码如下所示：
package org.vsector.server;
import java.io.IOException;
import java.net.ServerSocket;
public class SceneFlowServer {
int port;
Thread running = null;
CameraHandler handler = null;
public SceneFlowServer( int port, CameraHandler handler ){
this.port = port;
this.handler = handler;
}
public void start(){
if( handler == null ) return;
try{
running = new Thread(){
public void run(){
try{
ServerSocket listen = new ServerSocket( port );
while( true ){
System.out.print( "I am waiting on port " + port + "... " );
handler.accept( listen.accept() );
System.out.println( "Got someone!" );
Thread spinoff = new Thread( handler );
spinoff.start();
}
}catch( IOException e ){
System.err.println( "Could not listen on port " + port + "!" );
System.err.flush();
return;
}
}
};
running.start();
running.join();
}catch( Exception e ){
System.err.println( "Could not start thread!" );
System.err.flush();
}
}
}
我的 CameraHandler 代码：
package org.vsector.server;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
public class CameraHandler implements Runnable {
Socket client = null;
public CameraHandler(){ }
public void accept( Socket client ){
this.client = client;
}
@Override
public void run() {
// TODO Auto-generated method stub
BufferedReader in;
try {
in = new BufferedReader( new InputStreamReader( client.getInputStream() ));
System.out.println( in.readLine() );
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
client.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
我的客户端代码如下所示：
package org.vsector.client;
import java.io.PrintWriter;
import java.net.InetSocketAddress;
import java.net.Socket;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class ProcessingClientActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView text = (TextView) findViewById( R.id.textBox );
Socket sock;
try {
text.append( "\nOpening and writing to socket... " );
sock = new Socket();
sock.connect( new InetSocketAddress( "some ip", 4444 ), 30000 );
PrintWriter out = new PrintWriter( sock.getOutputStream(), true );
out.println( "Hello!" );
out.close();
sock.close();
text.append( "Done!" );
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
text.append( "Error: " + e + "\n" );
text.append( e.getMessage() );
}
}
}
设置了权限，但这仍然会导致“错误：java.net.SocketTimeoutException：连接超时”。
我不知道是什么原因造成的！有任何想法吗？
编辑：
没关系。网络问题。我在我的家庭网络上运行了代码，一切正常。