java - JSON 到 Avro 转换异常 - 预期启动联合。已获取 VALUE_STRING

Question

我有以下 avsc(Avro 架构):

{
  "type": "record",
  "name": "DataEventId",
  "fields": [
    {
      "name": "redeliveredDataEventIndices",
      "type": { "type": "array", "items": "int" },
      "doc" : "Data event indices",
      "default": []
    },
  ],
  "namespace": "com.xxx.xxx.xxx"
}

当我尝试使用此架构将 json 转换为 avro 时，出现以下错误:

org.apache.avro.AvroTypeException: Expected start-union. Got VALUE_STRING

我的输入数据:

{"redeliveredDataEventIndices":"[]"}

我知道这是 How to fix Expected start-union. Got VALUE_NUMBER_INT when converting JSON to Avro on the command line? 的重复项但如何为类型数组提供输入(在本例中，redeliveredDataEventIndices 是 int 类型的数组)

Answer 1

您的输入数据将数组用引号括起来，因此将其视为字符串。

试试这个:

{"redeliveredDataEventIndices":[]}