jackson反序列化结果为list失败

1、微服务之间调用 A调用B  B 返回  ResData>类型，实际返回结果内容为空，返回参数如下：

{
  "code": 0,
  "msg": "OK",
  "data": {}
}

feign.codec.DecodeException: JSON parse error: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
 at [Source: (PushbackInputStream); line: 1, column: 29]

2.解决思路

a. A服务调用B时避免出现空数据的情况
b.B服务返回做兜底逻辑，无数据返回空list

{
  "code": 0,
  "msg": "OK",
  "data": []
}