EvaluateJsonPath in NiFi returns 空字符串

Question

ExecuteSqlRecord 的输出被馈送到 EvaluateJsonPath 并且它 returns 空字符串。 ExecuteSqlRecord 的输出：

[
  {
    "X_LAST_DAY": "1618459200000",
    "X_FIRST_DAY_3MON_PREV": "1610427600000",
    "X_FIRST_DAY_1MON_PREV": "1615525200000",
    "X_LAST_DAY_1MON_PREV": "1617163200000"
  }
]

The attribute values are coming as 'Empty String Set'. Why is it coming as empty and what am I doing wrong?
In the EvaluateJsonPath, I have also tried different options like setting the following.
Return Type - auto-detect
Null Value Representation - empty string

Answer 1

你的数据是数组，应该拆分。在 EvaluateJsonPath

之前使用 SplitJson

EvaluateJsonPath in NiFi returns 空字符串

EvaluateJsonPath in NiFi returns empty string

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