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如果Dootask离线安装部署需要准备哪些文件 镜像? linux环境或者windows环境
com.xxl.rpc.util.XxlRpcException: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.xxl.rpc.remoting.provider.XxlRpcProviderFactory.invokeService(XxlRpcProviderFactory.java:219) at com.xxl.rpc.remoting.net.impl.netty_http.server.NettyHttpServerHandler.process(NettyHttpServerHandler.java:86) at com.xxl.rpc.remoting.net.impl.netty_http.server.NettyHttpServerHandler.access$000(NettyHttpServerHandler.java:27) at com.xxl.rpc.remoting.net.impl.netty_http.server.NettyHttpServerHandler$1.run(NettyHttpServerHandler.java:51) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)...