netty:Failed to initialize a channel. Closing

本文探讨了Netty项目在进行代码混淆打包成jar文件后出现的抽象方法错误问题。通过具体错误日志分析,指出了解决该问题的方法:在引发错误的handler前添加@Sharable注解。

netty 加到jar包 混淆后 报错

Failed to initialize a channel. Closing: [id: 0xf7195050]
                                                                        java.lang.AbstractMethodError: abstract method "void io.netty.channel.ChannelInitializer.initChannel(io.netty.channel.Channel)"
                                                                            at io.netty.channel.ChannelInitializer.initChannel(ChannelInitializer.java:113)
                                                                            at io.netty.channel.ChannelInitializer.handlerAdded(ChannelInitializer.java:105)
                                                                            at io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:597)
                                                                            at io.netty.channel.DefaultChannelPipeline.access$000(DefaultChannelPipeline.java:44)
                                                                            at io.netty.channel.DefaultChannelPipeline$PendingHandlerAddedTask.execute(DefaultChannelPipeline.java:1387)
                                                                            at io.netty.channel.DefaultChannelPipeline.callHandlerAddedForAllHandlers(DefaultChannelPipeline.java:1122)
                                                                            at io.netty.channel.DefaultChannelPipeline.invokeHandlerAddedIfNeeded(DefaultChannelPipeline.java:647)
                                                                            at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:506)
                                                                            at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:419)
                                                                            at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:478)
                                                                            at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
                                                                            at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:418)
                                                                            at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:454)
                                                                            at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:873)
                                                                            at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
                                                                            at java.lang.Thread.run(Thread.java:776)

需要在报错的handler前面加上@sharable

2025-09-06 09:00:49,468 WARN [acceptorWorkerGroup-3-1][io.netty.channel.ChannelInitializer] Failed to initialize a channel. Closing: [id: 0x6a2a1e54, L:/10.7.54.36:30930 - R:/10.6.9.43:52758] java.lang.VerifyError: Local variable table overflow Exception Details: Location: io/netty/handler/codec/ByteToMessageDecoder.<init>()V @18: fload_3 Reason: Local index 3 is invalid Bytecode: 0x0000000: 2ab7 017f 2ab2 0124 b500 382a 03b5 0059 0x0000010: 2a00 25b5 0022 2ab6 0182 2a4c a700 0c00 0x0000020: 00bf 4d00 105e 0010 0160 b901 6603 00a7 0x0000030: fff6 a7ff f6b1 Exception Handler Table: bci [28, 31] => handler: 34 Stackmap Table: full_frame(@31,{},{Object[#211]}) full_frame(@34,{Object[#2],Object[#2]},{Object[#211]}) append_frame(@50,Object[#211]) chop_frame(@53,1) at com.huatai.xtrade.xstep.commu.acceptor.XStepAcceptor$XStepNormalChannelInitializer.initChannel(XStepAcceptor.java:421) ~[xstep-1.3.22-SNAPSHOT.jar!/:?] at io.netty.channel.ChannelInitializer.initChannel(ChannelInitializer.java:129) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.ChannelInitializer.handlerAdded(ChannelInitializer.java:112) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.AbstractChannelHandlerContext.callHandlerAdded(AbstractChannelHandlerContext.java:989) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:610) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.DefaultChannelPipeline.access$100(DefaultChannelPipeline.java:46) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.DefaultChannelPipeline$PendingHandlerAddedTask.execute(DefaultChannelPipeline.java:1461) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.DefaultChannelPipeline.callHandlerAddedForAllHandlers(DefaultChannelPipeline.java:1126) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.DefaultChannelPipeline.invokeHandlerAddedIfNeeded(DefaultChannelPipeline.java:651) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:514) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:427) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:486) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:495) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-all-4.1.33.Final.jar!/:4.1.33.Final] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_202]
09-10
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