socket

//发送信息
   @Test
    public void test_002() throws UnknownHostException, IOException, InterruptedException{
        Socket server=new Socket("localhost", 8020);
        OutputStream out=server.getOutputStream();
        PrintWriter writer = new PrintWriter(out);
        String sendMsg="helloworld";
        writer.write(sendMsg );
        writer.flush();
        Thread.sleep(5000);//报错socket不关闭
    }
      //接收信息
      InputStream ins = server2.getInputStream();
      String message = SocketHWUtil.readSocket(ins);
       if (!ValueWidget.isNullOrEmpty(message)) {
            System.out.println("接收的信息:" + message);
       }
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原文链接：https://blog.csdn.net/qq_32343577/article/details/81632691