2：

Question

public Foo getFoo（Foo f）抛出JsonProcessingException，InterruptedException {

    if (!clientChannel.isRegistered()) {
        System.out.println("Client is not registered");
        return null;
    }
    String s = mapper.writer().writeValueAsString(f);

    ByteBuf message = Unpooled.buffer(s.length() +8);
    message.writeInt(1);//Tag
    message.writeInt(s.length());//length
    message.writeBytes(s.getBytes());
    clientChannel.writeAndFlush(message);

    Foo response = handler.q.take();

    return response;
}    


public static class JsonClientHandler extends SimpleChannelInboundHandler<ByteBuf>{


    ArrayBlockingQueue<ApplicationRoute> q = new ArrayBlockingQueue<ApplicationRoute>(1);

    public JsonClientHandler() {
        super(false);
    }


    @Override
    public void channelRead0(ChannelHandlerContext ctx, ByteBuf msg)
            throws Exception {
        ObjectMapper mapper = new ObjectMapper();
        byte[] a = new byte[msg.readableBytes()];
        msg.readBytes(a);
        Foo route = mapper.reader(Foo.class).readValue(a);
        q.add(route);
        //msg.release();

    }

}

public static void main（String [] args）{

        TestClient c = new TestClient();
        try {

            c.connect();
            Foo f = new Foo();
            for (int i =0; i < 1000; i++) {
                f = c.getFoo(f);
            }   
        }catch(Exception e) {
            e.printStackTrace();
        }
        finally {
            c.disconnect();
        }
   }

18/03/2015 14：17：43,811 nioEventLoopGroup-4-1 ERROR io.netty.util.ResourceLeakDetector.reportLeak（ResourceLeakDetector.java:244）|泄漏：在垃圾收集之前没有调用ByteBuf.release（）。最近的访问记录：2

2：

io.netty.buffer.AdvancedLeakAwareByteBuf.readBytes(AdvancedLeakAwareByteBuf.java:457)
com.foo.NettyClient$JsonClientHandler.channelRead0(NettyClient.java:208)
com.foo.NettyClient$JsonClientHandler.channelRead0(NettyClient.java:1)
io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:182)
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1038)
io.netty.handler.ssl.SslHandler.decode(SslHandler.java:911)
io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:268)
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:168)
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846)
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:130)
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
java.lang.Thread.run(Thread.java:745)

1

io.netty.buffer.AdvancedLeakAwareByteBuf.writeBytes(AdvancedLeakAwareByteBuf.java:559)
io.netty.handler.codec.LengthFieldBasedFrameDecoder.extractFrame(LengthFieldBasedFrameDecoder.java:495)
io.netty.handler.codec.LengthFieldBasedFrameDecoder.decode(LengthFieldBasedFrameDecoder.java:424)
io.netty.handler.codec.LengthFieldBasedFrameDecoder.decode(LengthFieldBasedFrameDecoder.java:343)
io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:268)
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:168)
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1038)
io.netty.handler.ssl.SslHandler.decode(SslHandler.java:911)
io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:268)
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:168)
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846)
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:130)
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
java.lang.Thread.run(Thread.java:745)

创建于： io.netty.buffer.UnpooledByteBufAllocator.newDirectBuffer（UnpooledByteBufAllocator.java:55） io.netty.buffer.AbstractByteBufAllocator.directBuffer（AbstractByteBufAllocator.java:155） io.netty.buffer.AbstractByteBufAllocator.directBuffer（AbstractByteBufAllocator.java:146） io.netty.buffer.AbstractByteBufAllocator.buffer（AbstractByteBufAllocator.java:83） io.netty.handler.codec.LengthFieldBasedFrameDecoder.extractFrame（LengthFieldBasedFrameDecoder.java:494） io.netty.handler.codec.LengthFieldBasedFrameDecoder.decode（LengthFieldBasedFrameDecoder.java:424） io.netty.handler.codec.LengthFieldBasedFrameDecoder.decode（LengthFieldBasedFrameDecoder.java:343） io.netty.handler.codec.ByteToMessageDecoder.callDecode（ByteToMessageDecoder.java:268） io.netty.handler.codec.ByteToMessageDecoder.channelRead（ByteToMessageDecoder.java:168） io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead（AbstractChannelHandlerContext.java:308） io.netty.channel.AbstractChannelHandlerContext.fireChannelRead（AbstractChannelHandlerContext.java:294） io.netty.handler.ssl.SslHandler.unwrap（SslHandler.java:1038） io.netty.handler.ssl.SslHandler.decode（SslHandler.java:911） io.netty.handler.codec.ByteToMessageDecoder.callDecode（ByteToMessageDecoder.java:268） io.netty.handler.codec.ByteToMessageDecoder.channelRead（ByteToMessageDecoder.java:168） io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead（AbstractChannelHandlerContext.java:308） io.netty.channel.AbstractChannelHandlerContext.fireChannelRead（AbstractChannelHandlerContext.java:294） io.netty.channel.DefaultChannelPipeline.fireChannelRead（DefaultChannelPipeline.java:846） io.netty.channel.nio.AbstractNioByteChannel $ NioByteUnsafe.read（AbstractNioByteChannel.java:130） io.netty.channel.nio.NioEventLoop.processSelectedKey（NioEventLoop.java:511） io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized（NioEventLoop.java:468） io.netty.channel.nio.NioEventLoop.processSelectedKeys（NioEventLoop.java:382） io.netty.channel.nio.NioEventLoop.run（NioEventLoop.java:354） io.netty.util.concurrent.SingleThreadEventExecutor $ 2.run（SingleThreadEventExecutor.java:116） io.netty.util.concurrent.DefaultThreadFactory $ DefaultRunnableDecorator.run（DefaultThreadFactory.java:137） java.lang.Thread.run（Thread.java:745）

Answer 1

我添加了msg.release（）;在channelRead0方法的最后，泄漏消失了。感谢Norman Maurer

网络资源泄漏

2：

1

1 个答案: