Mark Struberg created JOHNZON-148:
-------------------------------------

             Summary: writing primitives via OutputStream fails with weird 
exception
                 Key: JOHNZON-148
                 URL: https://issues.apache.org/jira/browse/JOHNZON-148
             Project: Johnzon
          Issue Type: Bug
          Components: JSON-B
    Affects Versions: 1.1.5
            Reporter: Mark Struberg
             Fix For: 1.1.6


When serialising toJson via OutputStream I get the following Exception:

{noformat}

javax.json.stream.JsonGenerationException: write(param) is only valid in arrays

        at 
org.apache.johnzon.core.JsonGeneratorImpl.checkArray(JsonGeneratorImpl.java:614)
        at 
org.apache.johnzon.core.JsonGeneratorImpl.write(JsonGeneratorImpl.java:421)
        at 
org.apache.johnzon.mapper.MappingGeneratorImpl.writePrimitives(MappingGeneratorImpl.java:177)
        at 
org.apache.johnzon.mapper.MappingGeneratorImpl.doWriteObject(MappingGeneratorImpl.java:86)
        at org.apache.johnzon.mapper.Mapper.writeObject(Mapper.java:157)
        at org.apache.johnzon.mapper.Mapper.writeObject(Mapper.java:149)
        at org.apache.johnzon.jsonb.JohnzonJsonb.toJson(JohnzonJsonb.java:317)
        at 
org.apache.johnzon.jsonb.JsonbWriteTest.boolAsStream(JsonbWriteTest.java:48)
        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 
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
        at 
com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
        at 
com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
        at 
com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
        at 
com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
{noformat}

The same works totally fine with the String toJson() method and even with 
StringWriter ^^



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