无法检查 json 空节点

Question

JsonNode jsonNode={"device": {},

  "customer_code": "a573aecc-03c6-472a-b2b9-4704ec9f3a92",

  "connector_list": "dz-connector-datadog",

  "configuration_id": "8cf91f32-7ce2-4111-9737-543d3ec787ae",

  "dz_app": "true",

  "video": {}

}

jsonNode.get("device")返回{}。我需要检查设备是否有值

Answer 1

通过检查节点的大小来检查值：if (jsonNode.get("device").size() == 0) {    // Device object contains no values.}

Answer 2

你可以试试这个检查：jsonNode.size() == 0