java网络编程（一）Socket、ServerSocket

不念不忘少年蓝@ 2022-03-21 14:30 262阅读 0赞

### 1.Socket ###

java都是基于InputStream还有OutputStream实现的。Socket也可以通过输入、输出流进行读写。

客户端

OutputStream outputStream = null;
            try {
                Socket socket = new Socket("127.0.0.1", 8111);
                outputStream = socket.getOutputStream();
                outputStream.write("大鸡腿".getBytes());
                outputStream.flush();
                socket.shutdownOutput();
                InputStream inputStream = socket.getInputStream();
                InputStreamReader inputStreamReader=new InputStreamReader(inputStream);
                BufferedReader br=new BufferedReader(inputStreamReader);
                String str=null;
                while((str=br.readLine())!=null){
                    System.out.println("服务端接收到信息:"+str);
                }
                br.close();
                inputStream.close();
                outputStream.close();
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }

Socket socket=new Socket进行连接

当输出完成之后，如果还要监听，不能说outputStream.close();不然连接也会关闭的，应该使用socket.shutdownOutput();

记得最后进行所有资源的close

### 2.ServerSocket ###

通过ServerSocket开启tcp访问。accept()进行端口监听，获取socket，从而操作outpuStream、InputStream进行输入输出，最后记得close

ServerSocket serverSocket=new ServerSocket(8111);
                System.out.println("服务器已开启8111端口监听...");
                Socket socket=serverSocket.accept();
                inputStream = socket.getInputStream();
                InputStreamReader inputStreamReader=new InputStreamReader(inputStream);
                BufferedReader br=new BufferedReader(inputStreamReader);
                while((str=br.readLine())!=null){
                    System.out.println("服务端接收到信息:"+str);
                }
                OutputStream outputStream=socket.getOutputStream();
                outputStream.write("收到信息".getBytes());
                outputStream.flush();
                outputStream.close();
                br.close();
                inputStream.close();
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }