如何将此JSON写入Elasticsearch Java API？

对于Elasticsearch，我有以下

JSON

查询（工作正常）-

我试图用Java API重写它-

public AggregationBuilder<TermsBuilder> getClassifierAggregation(String classifierName) {
    String probailityField = classifierName + "_probability";
    return AggregationBuilders.terms("by_class")
        .subAggregation(
            AggregationBuilders.terms("classifier").field(classifierName)
        )
        .subAggregation(
            AggregationBuilders.avg("avg_probability").field(probailityField)
        )
        .subAggregation(
            AggregationBuilders.sum("sum_probability").field(probailityField)
        );
}

但我得到了以下例外-

org.elasticsearch.search.aggregations.AggregationExecutionException: could not find the appropriate value context to perform aggregation [by_class]

---

我做错了什么？

我提到的方法写错了。这是正确的一个-

public TermsBuilder getClassifierAggregation(String classifierName) {
    String probailityField = classifierName + "_probability";
    return AggregationBuilders.terms("by_class").field(classifierName)
        .subAggregation(
            AggregationBuilders.avg("avg_probability").field(probailityField)
        )
        .subAggregation(
            AggregationBuilders.sum("sum_probability").field(probailityField)
        );
}

---

我提到的方法写错了。这是正确的一个-

public TermsBuilder getClassifierAggregation(String classifierName) {
    String probailityField = classifierName + "_probability";
    return AggregationBuilders.terms("by_class").field(classifierName)
        .subAggregation(
            AggregationBuilders.avg("avg_probability").field(probailityField)
        )
        .subAggregation(
            AggregationBuilders.sum("sum_probability").field(probailityField)
        );
}

public TermsBuilder getClassifierAggregation(String classifierName) {
    String probailityField = classifierName + "_probability";
    return AggregationBuilders.terms("by_class").field(classifierName)
        .subAggregation(
            AggregationBuilders.avg("avg_probability").field(probailityField)
        )
        .subAggregation(
            AggregationBuilders.sum("sum_probability").field(probailityField)
        );
}