Netty學習筆記1-粘包/拆包

1,粘包/拆包問題

2,粘包/拆包的解決策略

3,String解碼器

socketChannel.pipeline().addLast(new StringDecoder());

4,換行符轉碼器(特殊的分隔符)

request = ("QUERY TIME ORDER" + System.getProperty("line.separator")).getBytes();

socketChannel.pipeline().addLast(new LineBasedFrameDecoder(222));

5,分隔符轉碼器

socketChannel.pipeline().addLast(new DelimiterBasedFrameDecoder(1024,delimiter));

1024-讀取buffer的最大長度,如果超過該長度還沒讀取到分隔符則拋出異常

delimiter-分隔符

6,定長轉碼器

socketChannel.pipeline().addLast(new FixedLengthFrameDecoder(20));