io.netty.handler.codec.marshalling

类 MarshallingDecoder

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.ByteToMessageDecoder

io.netty.handler.codec.LengthFieldBasedFrameDecoder

io.netty.handler.codec.marshalling.MarshallingDecoder

所有已实现的接口:

ChannelHandler, ChannelInboundHandler

public class MarshallingDecoder
extends LengthFieldBasedFrameDecoder

Decoder which MUST be used with MarshallingEncoder. A LengthFieldBasedFrameDecoder which use an Unmarshaller to read the Object out of the ByteBuf.

嵌套类概要

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

ByteToMessageDecoder.Cumulator

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

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
MarshallingDecoder(UnmarshallerProvider provider) Creates a new decoder whose maximum object size is 1048576 bytes.
MarshallingDecoder(UnmarshallerProvider provider, int maxObjectSize) Creates a new decoder with the specified maximum object size.

方法概要

方法

限定符和类型	方法和说明
protected java.lang.Object	decode(ChannelHandlerContext ctx, ByteBuf in) Create a frame out of the ByteBuf and return it.
protected ByteBuf	extractFrame(ChannelHandlerContext ctx, ByteBuf buffer, int index, int length) Extract the sub-region of the specified buffer.

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

decode, 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

MarshallingDecoder

public MarshallingDecoder(UnmarshallerProvider provider)

Creates a new decoder whose maximum object size is 1048576 bytes. If the size of the received object is greater than 1048576 bytes, a StreamCorruptedException will be raised.

MarshallingDecoder

public MarshallingDecoder(UnmarshallerProvider provider,
                  int maxObjectSize)

Creates a new decoder with the specified maximum object size.

参数:

maxObjectSize - the maximum byte length of the serialized object. if the length of the received object is greater than this value, TooLongFrameException will be raised.

方法详细资料

decode

protected java.lang.Object decode(ChannelHandlerContext ctx,
                      ByteBuf in)
                           throws java.lang.Exception

从类复制的说明: LengthFieldBasedFrameDecoder

Create a frame out of the ByteBuf and return it.

覆盖:

decode 在类中 LengthFieldBasedFrameDecoder

参数:

ctx - the ChannelHandlerContext which this ByteToMessageDecoder belongs to

in - the ByteBuf from which to read data

返回:

frame the ByteBuf which represent the frame or null if no frame could be created.

抛出:

java.lang.Exception

extractFrame

protected ByteBuf extractFrame(ChannelHandlerContext ctx,
                   ByteBuf buffer,
                   int index,
                   int length)

从类复制的说明: LengthFieldBasedFrameDecoder

Extract the sub-region of the specified buffer.

If you are sure that the frame and its content are not accessed after the current LengthFieldBasedFrameDecoder.decode(ChannelHandlerContext, ByteBuf) call returns, you can even avoid memory copy by returning the sliced sub-region (i.e. return buffer.slice(index, length)). It's often useful when you convert the extracted frame into an object. Refer to the source code of ObjectDecoder to see how this method is overridden to avoid memory copy.

覆盖:

extractFrame 在类中 LengthFieldBasedFrameDecoder