Socket通信BufferedWrite

写入数据的代码:
....
bw = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF-8")); 

bw.write("it's a test", 0, 5);
....

读入数据代码:
....
br = new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF-8"));
....
while (true){
       msg = reader.readLine();
       if (msg == null){
            System.out.println("client is disconnected");
            break;
       }
       else
            System.out.println(msg);
}

由于BufferedReader 的 readLine() 方法是阻塞的

readLine 判断一行文本结束的标志是 \n 或 \r

所以在写入时添加两行代码：

bw.newLine();

bw.flush();

就可以读取了