com.google.gson.JsonSyntaxException

java.lang.NumberFormatException: empty String |

Samebug tips2

Your json input might be invalid. Try checking it in a validator like https://jsonlint.com

Your custom gson deserializer might have a bug. Try to write a unit test that checks proper deserialization of only that class by forging a json that contains a single field of that type.

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  • via Stack Overflow by avalon
    , 1 year ago
    java.lang.NumberFormatException: empty String
  • java.lang.NumberFormatException: empty String
  • java.lang.NumberFormatException: empty String
  • Stack trace

    • com.google.gson.JsonSyntaxException: java.lang.NumberFormatException: empty String | at com.google.gson.internal.bind.TypeAdapters$7.read(TypeAdapters.java:249) at com.google.gson.internal.bind.TypeAdapters$7.read(TypeAdapters.java:239) at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:116) at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:216) at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40) at com.google.gson.internal.bind.ArrayTypeAdapter.read(ArrayTypeAdapter.java:72) at com.google.gson.Gson.fromJson(Gson.java:879) at com.google.gson.Gson.fromJson(Gson.java:844) at com.google.gson.Gson.fromJson(Gson.java:793) at com.google.gson.Gson.fromJson(Gson.java:765) at com.bwssystems.HABridge.hue.HueMulator.changeState(HueMulator.java:750) at com.bwssystems.HABridge.hue.HueMulator.lambda$21(HueMulator.java:260) at spark.RouteImpl$1.handle(RouteImpl.java:58) at spark.webserver.MatcherFilter.doFilter(MatcherFilter.java:162) at spark.webserver.JettyHandler.doHandle(JettyHandler.java:61) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:189) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119) at org.eclipse.jetty.server.Server.handle(Server.java:517) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:302) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:245) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95) at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572) at java.lang.Thread.run(Thread.java:745)

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