【FeignClient报错】Cannot deserialize value of type``from Object value (token `JsonToken.START_OBJECT`)_cannot deserialize value of type `java.lang.string

1. 问题描述

@FeignClient(name = "dataServiceQueryInterface", url = "${url}:${port}")
public interface DataServiceQueryInterface {
    @GetMapping("/dataReport/getSysAreaAllList")
    List<SysArea> getSysAreaAllList() throws Exception;
}
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使用接口获取数据时报错：

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception 
[Request processing failed; nested exception is feign.codec.DecodeException: 
Error while extracting response for type 
[java.util.List<com.xxx.datamatch.datacar.entity.SysArea>] and content type 
[application/json;charset=UTF-8]; nested exception is 
org.springframework.http.converter.HttpMessageNotReadableException: 
JSON parse error: Cannot deserialize value of type 
`java.util.ArrayList<com.xxx.datamatch.datacar.entity.SysArea>` 
from Object value (token `JsonToken.START_OBJECT`); 
nested exceptio
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