Java 解析sparksql中的嵌套json

我在

JavaSchemaRDD

   root
   |-- ProductInfo: struct (nullable = true)
   |    |-- Features: string (nullable = true)
   |    |-- ImgURL: string (nullable = true)
   |    |-- Name: string (nullable = true)
   |    |-- Price: string (nullable = true)
   |    |-- ProductID: string (nullable = true)
   |-- Reviews: array (nullable = true)
   |    |-- element: struct (containsNull = false)
   |    |    |-- Author: string (nullable = true)
   |    |    |-- Content: string (nullable = true)
   |    |    |-- Date: string (nullable = true)
   |    |    |-- Overall: string (nullable = true)
   |    |    |-- ReviewID: string (nullable = true)
   |    |    |-- Title: string (nullable = true)
   |-- _corrupt_record: string (nullable = true)

我想根据产品的整体评级选择产品名称

我写的如下

JavaSchemaRDD variable = sqlContext.sql("SELECT ProductInfo.Name FROM Table" + "WHERE Reviews.element.Overall=5.0" + "ORDER BY c"); 

但似乎有一个错误

---

写一个是什么？

你用c点的是什么？下面是您应该执行的操作val variable=sqlContext.sql（“从表“+”中选择ProductInfo.Name，Reviews.totalas rating，其中rating=5.0”）；你们用c点什么？下面是您应该执行的操作val variable=sqlContext.sql（“从表“+”中选择ProductInfo.Name，Reviews.totalas rating，其中rating=5.0”）；