【无标题】json报错

操作失败，JSON parse error: Cannot deserialize value of type com.alibaba.fastjson.JSONArray from String value (token JsonToken.VALUE_STRING); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize value of type com.alibaba.fastjson.JSONArray from String value (token JsonToken.VALUE_STRING) at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 1, column: 174] (through reference chain:

返回的是array，就报这个错了