简单Java Socket编程

Posted 2021-06-16 之墨_

从客户端录入几个字符，发送到服务器端，服务器端将接收到的字符进行输出

1. 声明ServerSocket对象
2. 声明Socket对象
3. 声明输入流对象BufferedReader
4. 声明输出流对象
5. 创建一个ServerSocket，指定等待端口
6. 使用ServerSocket接收用户请求（处于监听状态）
7. 获得客户端的socket对象
8. 创建输入流并读取信息
9. 创建输出流并输出信息
10. 关闭流和socket
11. 创建ServerSocket对象
12. 创建对象

服务端

public class Server {
    ServerSocket ss;
    Socket s;
    BufferedReader br;
    PrintWriter pw;
    public Server(){
        try {
            ss = new ServerSocket(6666);
            while (true){
                s = ss.accept();
                br = new BufferedReader(new InputStreamReader(s.getInputStream()));
                System.out.println("Client:"+br.readLine());
                pw = new PrintWriter(s.getOutputStream(),true);
                pw.print("--发送成功--");
                pw.close();
                br.close();
                s.close();
            }
        }catch (IOException e){
            System.out.println("有错误");
        }
    }
    public static void main(String[] args) {
        new Server();
    }
}

客户端

public class Client {         
  Socket s;
  BufferedReader br;
  PrintWriter pw ;
  public Client() {
      try {
          s = new Socket("127.0.0.1", 6666);
          BufferedReader line = new BufferedReader(new InputStreamReader(System.in));
          pw = new PrintWriter(s.getOutputStream(),true);
          pw.println(line.readLine());
          br = new BufferedReader(new InputStreamReader(s.getInputStream()));
          System.out.println(br.readLine());
          pw.close();
          br.close();
      } catch (IOException e) {
          e.printStackTrace();
      }
  }
    public static void main(String[] args) {
        new Client();
    }
}