{ "field": "code", "value": "D" }
curl --location --request POST 'http://127.0.0.1:8080/Example/countByField' \ --header 'Content-Type: application/json' \ --data-raw '{ "field": "code", "value": "D" }'
{ "code": "SUCCESS", "message": "查询成功", "data": "1" }