Java Socket 7部曲

Client:

Socket socket = new Socket("localhost", 8882); //初始化socket，如果是server端则多一个ServerSocket的初始化

BufferedReader sis = new BufferedReader(new InputStreamReader(System.in)); //获得系统输入流

BufferedReader is = new BufferedReader(new InputStreamReader(socket.getInputStream())); //得到socket的输入流，就是从server 发送过来的字符

PrintWriter os = new PrintWriter(socket.getOutPutStream()); //得到socket的输出流，就是即将发送到server的管道

string readLine = sis.readLine(); //获得系统输入的一行

while(!readLine.equals("bye")) { 

          os.println(readLine); //向服务器发送字符流

          os.flush();

          System.out.println("Client: " + readLine + "Server: " + is.readLine());

          readLine = sis.readLine();

    }

is.close(); // 关闭流

os.close();

socket.close();

Server:

ServerSocket server = new ServerSocket(8882);

Socket socket = server.accept(); //初始化socket，server端多一个ServerSocket的初始化

BufferedReader sis = new BufferedReader(new InputStreamReader(System.in)); //获得系统输入流

BufferedReader is = new BufferedReader(new InputStreamReader(socket.getInputStream())); //得到socket的输入流，就是从server 发送过来的字符

PrintWriter os = new PrintWriter(socket.getOutPutStream()); //得到socket的输出流，就是即将发送到server的管道

string readLine = sis.readLine(); //获得系统输入的一行

while(!readLine.equals("bye")) { 

          os.println(readLine); //向服务器发送字符流

          os.flush();

          System.out.println("Client: " + readLine + "Server: " + is.readLine());

          readLine = sis.readLine();

    }

is.close(); // 关闭流

os.close();

socket.close();

MultiThread SocketServer:

public SocketServer extends Thread {

     public static void main(String[] args) {

          ServerSocket server = new ServerSocket(8882);

          while(true) {

                    Socket socket = server.accept();

          }

     }

     public void run() {

          // Left 6 steps

     }

}