java.lang.NullPointerException

GitHub | year520 | 5 months ago
  1. 0

    dubbo 序列化问题.有谁遇到过吗

    GitHub | 5 months ago | year520
    java.lang.NullPointerException
  2. 0

    Android: Saving Map State in Google map

    Stack Overflow | 11 months ago | Junie Negentien
    java.lang.RuntimeException: Unable to resume activity {com.ourThesis.junieNegentien2015/com.ourThesis.junieNegentien2015.MainActivity}: java.lang.NullPointerException
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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at com.google.common.collect.SingletonImmutableMap.<init>()
    2. Guava
      SingletonImmutableMap$bc1.newInstance
      1. com.google.common.collect.SingletonImmutableMap.<init>(SingletonImmutableMap.java:47)
      2. com.google.common.collect.SingletonImmutableMap$bc1.newInstance(SingletonImmutableMap$bc1.java)
      2 frames
    3. com.alibaba.dubbo
      NettyCodecAdapter$InternalDecoder.messageReceived
      1. com.alibaba.dubbo.common.serialize.support.dubbo.Builder$AbstractObjectBuilder.parseFrom(Builder.java:962)
      2. com.alibaba.dubbo.common.serialize.support.dubbo.GenericObjectInput.readObject(GenericObjectInput.java:93)
      3. com.alibaba.dubbo.common.serialize.support.dubbo.GenericObjectInput.readObject(GenericObjectInput.java:104)
      4. com.alibaba.dubbo.rpc.protocol.dubbo.DecodeableRpcInvocation.decode(DecodeableRpcInvocation.java:109)
      5. com.alibaba.dubbo.rpc.protocol.dubbo.DecodeableRpcInvocation.decode(DecodeableRpcInvocation.java:71)
      6. com.alibaba.dubbo.rpc.protocol.dubbo.DubboCodec.decodeBody(DubboCodec.java:137)
      7. com.alibaba.dubbo.remoting.exchange.codec.ExchangeCodec.decode(ExchangeCodec.java:126)
      8. com.alibaba.dubbo.remoting.exchange.codec.ExchangeCodec.decode(ExchangeCodec.java:87)
      9. com.alibaba.dubbo.rpc.protocol.dubbo.DubboCountCodec.decode(DubboCountCodec.java:46)
      10. com.alibaba.dubbo.remoting.transport.netty.NettyCodecAdapter$InternalDecoder.messageReceived(NettyCodecAdapter.java:134)
      10 frames
    4. Netty
      DeadLockProofWorker$1.run
      1. org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:80)
      2. org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
      3. org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)
      4. org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:274)
      5. org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:261)
      6. org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:349)
      7. org.jboss.netty.channel.socket.nio.NioWorker.processSelectedKeys(NioWorker.java:280)
      8. org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:200)
      9. org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
      10. org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:44)
      10 frames
    5. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
      3. java.lang.Thread.run(Thread.java:745)
      3 frames