报错： java.lang.NoClassDefFoundError: Could not initialize class com.baidu.bjf.remoting.protobuf.utils.JDKCompilerHelper

[tantalate]

有时候会用不同的用户启动服务端，碰到这个错误 java.lang.NoClassDefFoundError: Could not initialize class com.baidu.bjf.remoting.protobuf.utils.JDKCompilerHelper

后来发现是因为/tmp/JPROTOBUF_CACHE_DIR/ 这个文件夹下有文件权限不足导致，权限设置好或者删掉之后就正常了。

想请问一下，为啥是先报一个java.lang.NoClassDefFoundError:的错误，后边再报权限不足呢？JDKCompilerHelper这个类jar包中肯定是有的。

另外/tmp/JPROTOBUF_CACHE_DIR/这个目录是不是每次执行都重新创建好些？

错误信息如下：

2022-06-30 23:01:21 ERROR [com.boyun.wjserver.ws.handler.WebSocketInHandler  ] : Error:
java.lang.NoClassDefFoundError: Could not initialize class com.baidu.bjf.remoting.protobuf.utils.JDKCompilerHelper
	at com.baidu.bjf.remoting.protobuf.ProtobufProxy.doCreate(ProtobufProxy.java:397)
	at com.baidu.bjf.remoting.protobuf.ProtobufProxy.create(ProtobufProxy.java:311)
	at com.baidu.bjf.remoting.protobuf.ProtobufProxy.create(ProtobufProxy.java:276)
	at com.baidu.bjf.remoting.protobuf.ProtobufProxy.create(ProtobufProxy.java:249)
	at com.baidu.bjf.remoting.protobuf.ProtobufProxy.create(ProtobufProxy.java:208)
	at com.boyun.wjserver.ws.codec.ProtobufDecoder.decode(ProtobufDecoder.java:23)
	at com.boyun.wjserver.ws.codec.ProtobufDecoder.decode(ProtobufDecoder.java:41)
	at com.boyun.wjserver.ws.handler.WebSocketInHandler.channelRead0(WebSocketInHandler.java:48)
	at com.boyun.wjserver.ws.handler.WebSocketInHandler.channelRead0(WebSocketInHandler.java:28)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:93)
	at io.netty.handler.codec.http.websocketx.Utf8FrameValidator.channelRead(Utf8FrameValidator.java:77)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler$1.channelRead(WebSocketServerProtocolHandler.java:283)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:316)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.lang.Thread.run(Thread.java:748)
2022-06-30 23:01:21 ERROR [com.boyun.wjserver.ws.handler.WebSocketInHandler  ] : Error:
java.lang.ExceptionInInitializerError: null
	at com.baidu.bjf.remoting.protobuf.ProtobufProxy.doCreate(ProtobufProxy.java:397)
	at com.baidu.bjf.remoting.protobuf.ProtobufProxy.create(ProtobufProxy.java:311)
	at com.baidu.bjf.remoting.protobuf.ProtobufProxy.create(ProtobufProxy.java:276)
	at com.baidu.bjf.remoting.protobuf.ProtobufProxy.create(ProtobufProxy.java:249)
	at com.baidu.bjf.remoting.protobuf.ProtobufProxy.create(ProtobufProxy.java:208)
	at com.boyun.wjserver.ws.codec.ProtobufDecoder.decode(ProtobufDecoder.java:23)
	at com.boyun.wjserver.ws.codec.ProtobufDecoder.decode(ProtobufDecoder.java:41)
	at com.boyun.wjserver.ws.handler.WebSocketInHandler.channelRead0(WebSocketInHandler.java:48)
	at com.boyun.wjserver.ws.handler.WebSocketInHandler.channelRead0(WebSocketInHandler.java:28)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:93)
	at io.netty.handler.codec.http.websocketx.Utf8FrameValidator.channelRead(Utf8FrameValidator.java:77)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler$1.channelRead(WebSocketServerProtocolHandler.java:283)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:316)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.RuntimeException: unzip error from ZipUtils
	at com.baidu.bjf.remoting.protobuf.utils.ZipUtils.unZip(ZipUtils.java:88)
	at com.baidu.bjf.remoting.protobuf.utils.compiler.JdkCompiler.<init>(JdkCompiler.java:158)
	at com.baidu.bjf.remoting.protobuf.utils.compiler.JdkCompiler.<init>(JdkCompiler.java:100)
	at com.baidu.bjf.remoting.protobuf.utils.JDKCompilerHelper.<clinit>(JDKCompilerHelper.java:30)
	... 44 common frames omitted
Caused by: java.io.FileNotFoundException: /tmp/JPROTOBUF_CACHE_DIR/BOOT-INF/classes/mybatis-config.xml (权限不够)
	at java.io.FileOutputStream.open0(Native Method)
	at java.io.FileOutputStream.open(FileOutputStream.java:270)
	at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
	at java.io.FileOutputStream.<init>(FileOutputStream.java:162)
	at com.baidu.bjf.remoting.protobuf.utils.ZipUtils.unZip(ZipUtils.java:76)
	... 47 common frames omitted

[jhunters]

嗯，这个在spring boot下，会有这个操作， tmp目录是从 环境变量 System.getProperty("java.io.tmpdir") 获取的，也可以通过环境变量来修改目录，也可以提前创建