Json 数组的 JOLT 变换规范表达式

Question

我有一个输入 json，其格式为：

{
  "ListArray": [
    {
      "address": "address1",
      "contact": "123456789",
      "bpId": 123
    },
    {
      "address": "address2",
      "contact": "135792468",
      "bpId": 456
    },
    {
      "address": "address3",
      "contact": "246812356",
      "bpId": 678
    }
  ]
}

我希望输出 json 采用这种格式：

{
 "Address_list": ["address1","address2","address3"],
 "Contact_list": ["123456789","135792468","246812356"],
 "Id_list": [123,456,678]
}

有人能告诉我应该怎么做吗？ jolt变换表达式应该是什么

Answer 1

使用一步shift类型转换就够了如

[
  {
    "operation": "shift",
    "spec": {
      "ListArray": {
        "*": {
          "address": "Address_list",
          "contact": "Contact_list",
          "bpId": "Id_list"
        }
      }
    }
  }
]

如果不是改键名，直接这样用

[
  {
    "operation": "shift",
    "spec": {
      "ListArray": {
        "*": {
          "*": "&"
        }
      }
    }
  }
]

Json 数组的 JOLT 变换规范表达式

Spec Expression for JOLT transform of Json Array

json

jolt

apache-nifi