我正在编写一个 Java 客户端，它将图像作为字节数组发送，而 Python 服务器则用于接收图像。接收到的图像高度、宽度、通道是否正确，
sock = socket.socket()
sock.bind(('localhost', 8080))
sock.listen(1)
print ("Listen")
conn, addr = sock.accept()
print('Start server')
while True:
data = conn.recv(1024)
if not data:
break
img = cv2.imdecode(np.fromstring(io.BytesIO(data).getvalue(), dtype=np.uint8), 1)
np.save('snapshot.npy',img)
exit()
使用显示图像cv2.imshow('img', img)会产生不正确的结果：示例输出
Java端：
public class Client implements Runnable {
private Socket socket;
private DataOutputStream out;
private String server;
private int port;
private ArrayList<ResponseListener> listeners = new ArrayList<>();
public void addListener(ResponseListener responseListener){
listeners.add(responseListener);
}
public void removeListeners(ResponseListener responseListener){
listeners.remove(responseListener);
}
Client(String server, int port) {
this.server = server;
this.port = port;
}
public void start(){
while(socket==null){
try {
socket = new Socket(server, port);
socket.setTcpNoDelay(true);
System.out.println("Ready");
listeners.forEach((listener)->listener.serverIsReady());
} catch (Exception ex) {
System.out.println("In thread " + ex.toString());
}
}
}
public void send(byte[] img) throws IOException {
out.write(img);
}
@Override
public void run() {
InputStreamReader in = null;
try {
in = new InputStreamReader(socket.getInputStream());
System.out.println(in);
out = new DataOutputStream(socket.getOutputStream());
} catch (IOException e) {
System.out.println("in or out failed");
System.exit(-1);
}
int count = 0;
while (true) {
try {
int line = in.read();
count++;
if(count==4) {
listeners.forEach((listener)->listener.onSignDefined(String.valueOf(line)));
count=0;
}
} catch (Exception e) {
System.out.println("In loop " + e.toString());
System.exit(-1);
}
}
}
}