關於Java Tcp Socket InputStream read()得不到-1

問題

服務端Socket,accept()到一個socket對象後,取出其InputStream sis對象,sis.read()一直取不到-1

解決

在客戶端Socket,當OutputStream sos = socket.getOutputStream();在對sos對象操作完畢後,即數據寫入完成,並且flush()後,需要調用socket.shutdownOutput();告訴服務端數據傳輸完畢.解決以上問題.

客戶端代碼

import java.io.OutputStream;
import java.net.Socket;



public class TcpSocketClient {

    public static void main(String[] args){
        Thread t = new Thread(){
            public void run() {
                try {
                    Socket socket = new Socket("127.0.0.1", 47708);
                    OutputStream sos = socket.getOutputStream();
                    for (int i = 0; i < 100; i++) {
                        Thread.sleep(500);
                        sos.write((byte)i);
                        int result = 1;
                        result *= i;
                    }
                    sos.flush();
                    //特別注意要加上這個,不然服務端的socket.getInputStream().read()一直獲取不了-1.
                    socket.shutdownOutput();
                    socket.close();
                    System.out.println("client socket finish!");
                } catch (Exception e) {
                    System.out.println(e);
                }
            };
        };
        t.start();
    }
}

服務端代碼

import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Arrays;


public class TcpSocketServer {
public static void main(String[] args) {
        try {
            System.out.println("TcpSocketServer start!");
            ServerSocket serverSocket = new ServerSocket(47708);
            while (true) {
                System.out.println("TcpSocketServer waiting accept!");
                Socket socket = serverSocket.accept();
                System.out.println("TcpSocketServer accept and dealing!");
                InputStream sis = socket.getInputStream();
                int size = sis.available();
                byte[] data = new byte[512];
                int k = -1;
                while((k = sis.read(data)) != -1) {
                    System.out.println(" k = " + k + " size = " + size + " Collect form Client data = " + Arrays.toString(Arrays.copyOf(data, k)));
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}