我已经实现了Andorid App,它通过套接字(TCP)与服务器端进行通信。当我点击Android应用程序中的按钮时,应用程序和服务器端之间正在建立通信以及正在交换消息。 要再次与服务器通信,我必须再次在Eclipse中运行服务器。我想运行一次服务器端,当clientSocket缓冲区中没有数据时,如果Android用户向服务器发送一个新请求 ,服务器应该再次监听。我试图通过使用Runnable
类来管理该请求,但我仍然需要运行Eclipse中的服务器端?我怎样才能使它工作?保持ServerSocket监听客户端
public class Server{
public static void main(String args[]) throws Exception {
Cg2AapiServer.startServer();
}
private static void startServer() {
Runnable serverTask = new Runnable() {
@Override
public void run() {
try {
ServerSocket serverSocket = new ServerSocket(27015);
Socket clientSocket = serverSocket.accept();
Cg2AapiServer.bufferedInputStream = new BufferedInputStream(clientSocket.getInputStream());
Cg2AapiServer.outputStream = clientSocket.getOutputStream();
Cg2AapiServer.smartCard = new SmartCard();
Cg2AapiServer.handleConnection();
Cg2AapiServer.bufferedInputStream.close();
Cg2AapiServer.outputStream.close();
clientSocket.close();
} catch (IOException e) {
System.err.println("Unable to process client request");
e.printStackTrace();
}
}
};
Thread serverThread = new Thread(serverTask);
serverThread.start();
System.out.println("At the end of the startServer method!");
}
private static void handleConnection() throws IOException {
ByteBuffer receiveBuffer = ByteBuffer.allocate(Cg2AapiServer.RECEIVE_BUFFER_LENGTH);
int readBytes = 0;
while (true) {
readBytes = Cg2AapiServer.bufferedInputStream.read(receiveBuffer.array(), receiveBuffer.position(),
receiveBuffer.remaining());
System.out.println("readBytes: " + readBytes);
if (readBytes < 0) {
// What should I do here when the readBytes = -1
Cg2AapiServer.startServer(); //With this line I am getting the error below.
break;
}
}
}
错误
无法处理客户端请求java.net.BindException:在 的Java JVM_Bind在 java.net.DualStackPlainSocketImpl.bind0(本机方法):使用地址 已经.net.DualStackPlainSocketImpl.socketBind(DualStackPlainSocketImpl.java:106) at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376) at java.net.PlainSocketImpl.bind(PlainSoc (serverSocket.java:190)at java.net.ServerSocket.bind(ServerSocket.java:376)at java.net.ServerSocket。(ServerSocket.java:237)at java.net.ServerSocket。(ServerSocket.java: 128)维持在 java.lang.Thread.run(Thread.java:745 Cg2AapiServer $ 1.run(Cg2AapiServer.java:42))
地址已在使用:JVM_Bind。您需要停止旧的运行服务器,然后运行它。这个错误意味着有些东西已经在您选择的端口号上进行了侦听。 – Sneh