javaapi中嵌套性实体存储到es报错：IllegalArgumentException

 @Test

    public void addTestJson() {

        ElasticClientOrIndex elasticClientOrIndex = new ElasticClientOrIndexImp();

        TransportClient client = elasticClientOrIndex.getClient();

        itooDataEntity = returnEntity();

        String json = JSON.toJSON(itooDataEntity).toString();

        IndexResponse response = client.prepareIndex("itoo-user-whole", "ItooWebContentList",

                itooDataEntity.getUserId()).setSource(json).execute().actionGet();

    }

java.lang.IllegalArgumentException: The number of object passed must be even but was [1]



	at org.elasticsearch.action.index.IndexRequest.source(IndexRequest.java:360)

	at org.elasticsearch.action.index.IndexRequest.source(IndexRequest.java:347)

	at org.elasticsearch.action.index.IndexRequestBuilder.setSource(IndexRequestBuilder.java:161)

	at testTransDataToEs.addTestJson(testTransDataToEs.java:239)

	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:497)

	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)

	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)

	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)

	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)

	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)

	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:69)

	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:48)

	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)

	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)

	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)

	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)

	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)

	at org.junit.runners.ParentRunner.run(ParentRunner.java:292)

	at org.junit.runner.JUnitCore.run(JUnitCore.java:157)

	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)

	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)

	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)

	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)