Labeling/server.java at main · WhiteHCCTV/Labeling · GitHub

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import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class server {
    public static int port = 5555;
    public static ServerSocket serverSocket = null;
    public static String path = "./sample/server/";

    public static void main(String[] args) {
        try {
            serverSocket = new ServerSocket(port);
        }
        catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("Wait ... ");

        while(true){
            File dir = new File(path);
            int fileCount = folderFileCount(dir);

            //Socket initSock = null;

            // Send file count
            sendFileCount(fileCount);

            FileInputStream fileInputStream = null;
            Socket socket = null;

            int count = 0;

            // Send File
            do{
                try {
                    socket = serverSocket.accept();
                    OutputStream outputStream = socket.getOutputStream();

                    String target = path+Integer.toString(count+1)+".jpg";

                    fileInputStream = new FileInputStream(target);
                    byte[] dataBuff = new byte[10000];
                    int length = fileInputStream.read(dataBuff);

                    while (length != -1) {
                        outputStream.write(dataBuff, 0, length);
                        length = fileInputStream.read(dataBuff);
                    }
                    System.out.println("File \""+ target + "\" is trasmitted!");
                }
                catch (IOException e) {
                    e.printStackTrace();
                }

                finally {
                    if (fileInputStream != null) {
                        try {
                            fileInputStream.close();
                        }
                        catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                    if (socket != null) {
                        try {
                            socket.close();
                        }
                        catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                }
                count+=1;
            }while(count<fileCount);
            System.out.println("\nDisconnect\n");
        }
    }

    public static int folderFileCount(File givenDir){
        int fileCount = 0;
        try{
            for(File file:givenDir.listFiles()){
                if(file.isFile()){
                    fileCount+=1;
                }
            }
        }catch(Exception e){
            e.printStackTrace();
        }
        return fileCount;
    }

    public static void sendFileCount(int givenFileCount){
        try{
            Socket initSocket = serverSocket.accept();
            OutputStream osInit = initSocket.getOutputStream();
            DataOutputStream dosInit = new DataOutputStream(osInit);
            dosInit.writeInt(givenFileCount);
            System.out.println("File Number is transmitted!\n");
            dosInit.close();
            osInit.close();
            initSocket.close();
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}