FeignClient【问题】Cannot deserialize value of type``from Object value (token `JsonToken.START_OBJECT`)

@FeignClient(name = "dataServiceQueryInterface", url = "${url}:${port}")
public interface DataServiceQueryInterface {
    @GetMapping("/dataReport/getSysAreaAllList")
    List<SysArea> getSysAreaAllList() throws Exception;
}

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 exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: 
Cannot deserialize value of type 
`java.util.ArrayList<com.xxx.datamatch.datacar.entity.SysArea>` 
from Object value (token `JsonToken.START_OBJECT`)

<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>fastjson</artifactId>
  <version>1.2.46</version>
</dependency>

@FeignClient(name = "dataServiceQueryInterface", url = "${url}:${port}")
public interface DataServiceQueryInterface {
    @GetMapping("/dataReport/getSysAreaAllList")
    String getSysAreaAllList() throws Exception;
}

@FeignClient(name = "dataServiceQueryInterface", url = "${url}:${port}")
public interface DataServiceQueryInterface {
    @PostMapping("/dataReport/getSysAreaAllList")
    List<SysArea> getSysAreaAllList() throws Exception;
}