我创建了一个解码器来处理客户端发送的字节。 这里是ReplayingDecoder在解码时抛出异常
import java.util.List;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ReplayingDecoder;
public class MessageDecoder extends ReplayingDecoder<DecoderState> {
private int length;
public MessageDecoder()
{
super(DecoderState.READ_LENGTH);
}
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buf, List<Object> out) throws Exception{
System.out.println(buf.readableBytes());
switch(state()){
case READ_LENGTH:
length=buf.readInt();
System.out.println("length is: "+length);
checkpoint(DecoderState.READ_CONTENT);
case READ_CONTENT:
ByteBuf frame = buf.readBytes(length);
checkpoint(DecoderState.READ_LENGTH);
out.add(frame);
break;
default:
throw new Error("Shouldn't reach here");
}
}
}
而当客户端发送的字节
io.netty.handler.codec.DecoderException它抛出一个错误:java.lang.IllegalArgumentException异常:minimumReadableBytes:-603652096(预期:> = 0) at io.netty.handler.codec.ReplayingDecoder.callDecode(ReplayingDecoder.java:431) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:245) at io.netty .channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:292) 在io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:278) 在io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:962) 在io.netty.channel.nio.AbstractNioByteChannel $ NioByteUnsafe。读(AbstractNioByteChannel.java:131) 在io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528) 在io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:485) 在io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:399) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:371) at io.netty.util.concurrent.SingleThreadEventExecutor $ 2 .run(SingleThreadEventExecutor.java:112) at io.netty.util.concurrent.DefaultThreadFactory $ DefaultRunnableDecorator.run(DefaultThreadFactory.java:137) 在java.lang.Thread.run(来源不明)
该代码是从官方文档http://netty.io/4.0/api/io/netty/handler/codec/ReplayingDecoder.html,所以我真不不明白为什么它不起作用
btw当我发送4个字节它说我发送2147483647字节 – user2686299