com.feingto.iot.common.codec

类 MessageDecoder

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.ByteToMessageDecoder

io.netty.handler.codec.LengthFieldBasedFrameDecoder

com.feingto.iot.common.codec.MessageDecoder

所有已实现的接口:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler

public class MessageDecoder
extends io.netty.handler.codec.LengthFieldBasedFrameDecoder

自定义报文长度解码器

作者:

longfei

嵌套类概要

从类继承的嵌套类/接口 io.netty.handler.codec.ByteToMessageDecoder

io.netty.handler.codec.ByteToMessageDecoder.Cumulator

从接口继承的嵌套类/接口 io.netty.channel.ChannelHandler

io.netty.channel.ChannelHandler.Sharable

字段概要

从类继承的字段 io.netty.handler.codec.ByteToMessageDecoder

COMPOSITE_CUMULATOR, MERGE_CUMULATOR

构造器概要

构造器

构造器和说明
MessageDecoder(int maxFrameLength, int lengthFieldOffset, int lengthFieldLength, int lengthAdjustment, int initialBytesToStrip, boolean failFast)

方法概要

限定符和类型	方法和说明
protected Object	decode(io.netty.channel.ChannelHandlerContext ctx, io.netty.buffer.ByteBuf in)

从类继承的方法 io.netty.handler.codec.LengthFieldBasedFrameDecoder

decode, extractFrame, getUnadjustedFrameLength

从类继承的方法 io.netty.handler.codec.ByteToMessageDecoder

actualReadableBytes, callDecode, channelInactive, channelRead, channelReadComplete, decodeLast, discardSomeReadBytes, handlerRemoved, handlerRemoved0, internalBuffer, isSingleDecode, setCumulator, setDiscardAfterReads, setSingleDecode, userEventTriggered

从类继承的方法 io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught

从类继承的方法 io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerAdded, isSharable

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 io.netty.channel.ChannelHandler

handlerAdded

构造器详细资料

MessageDecoder

public MessageDecoder(int maxFrameLength,
                      int lengthFieldOffset,
                      int lengthFieldLength,
                      int lengthAdjustment,
                      int initialBytesToStrip,
                      boolean failFast)

参数:

maxFrameLength - 网络字节序

lengthFieldOffset - 长度字段偏移的字节数

lengthFieldLength - 数据帧的最大长度

lengthAdjustment - 该字段加长度字段等于数据帧的长度

initialBytesToStrip - 数据帧中跳过的字节数

failFast - 是否长度域超过maxFrameLength抛出TooLongFrameException

方法详细资料

decode

protected Object decode(io.netty.channel.ChannelHandlerContext ctx,
                        io.netty.buffer.ByteBuf in)
                 throws Exception

覆盖:

decode 在类中 io.netty.handler.codec.LengthFieldBasedFrameDecoder

抛出:

Exception