我正在制作一个Android应用程序来与计算机窗口进行通信。 我发现通过使用ADB命令转发端口必须很容易做到这一点。
所以我尝试通过USB建立客户端/服务器连接,但我遇到了一些问题
Windows上的服务器:
public class Server {
public static void main(String[] args) throws IOException {
System.out.println("EchoClient.main()");
Socket client = null;
// initialize server socket
try {
server = new ServerSocket(38300);
server.setSoTimeout(TIMEOUT * 1000);
// attempt to accept a connection
client = server.accept();
Globals.socketOut = new PrintStream(client.getOutputStream());
Globals.socketIn = new BufferedReader(new InputStreamReader(client.getInputStream()));
// Globals.socketIn.YY
} catch (SocketTimeoutException e) {
// print out TIMEOUT
connectionStatus = "Connection has timed out! Please try again";
System.out.println(connectionStatus);
} catch (IOException e) {
System.out.println("error"+ e);
} finally {
// close the server socket
try {
if (server != null)
server.close();
} catch (IOException ec) {
System.out.println("Cannot close server socket"+ ec);
}
}
if (client != null) {
System.out.println("connected");
}
}
public static class Globals {
private static String typeOfTransmission ;
static PrintStream socketOut = null;
static BufferedReader socketIn = null;
public static synchronized String getTypeTransmission(){
return typeOfTransmission;
}
public static synchronized void setTypeTransmission(String s){
typeOfTransmission = s;
}
}
}
android APP客户端
private Runnable initializeConnection = new Thread() {
public void run() {
Socket client = null;
// initialize server socket
try {
Log.d("ip",getLocalIpAddress());
client = new Socket(getLocalIpAddress(), 38300);
Globals.socketIn = new Scanner(new InputStreamReader(
client.getInputStream()));
Globals.socketOut = new PrintWriter(client.getOutputStream());
// Globals.socketIn.YY
} catch (SocketTimeoutException e) {
// print out TIMEOUT
connectionStatus = "Connection has timed out! Please try again";
mHandler.post(showConnectionStatus);
} catch (IOException e) {
Log.e(TAG, "" + e);
} finally {
// close the server socket
try {
if (server != null)
server.close();
} catch (IOException ec) {
Log.e(TAG, "Cannot close server socket"+ ec);
}
}
if (client != null) {
Globals.connected = true;
// print out success
connectionStatus = "Connection was succesful!";
Log.d(TAG, "connected!");
mHandler.post(showConnectionStatus);
while (Globals.socketIn.hasNext()) {
socketData = Globals.socketIn.next();
mHandler.post(socketStatus);
}
}
}
};
public String getLocalIpAddress(){
try{
for(Enumeration<NetworkInterface> en =NetworkInterface.getNetworkInterfaces();en.hasMoreElements();){
NetworkInterface intf = en.nextElement();
for(Enumeration<InetAddress> enumIpAddress= intf.getInetAddresses();enumIpAddress.hasMoreElements();){
InetAddress inetAddress = enumIpAddress.nextElement();
if (!inetAddress.isLoopbackAddress()){
return inetAddress.getHostAddress().toString();
}
}
}
}catch(SocketException ex){
Log.e("ServerActivity",ex.toString());
}
return null;
}
记录器
01-29 11:43:49.640: D/ip(2981): fe80::a806:ff:fec6:d3d%p2p0
01-29 11:43:49.650: E/Connection(2981): java.net.ConnectException: failed to connect to /fe80::a806:ff:fec6:d3d%p2p0%4 (port 38300): connect failed: ECONNREFUSED (Connection refused)
谢谢