一、异常内容
JSON parse error:
Cannot deserialize value of type java.lang.String from Object value (token JsonToken.START_OBJECT);
nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException:
Cannot deserialize value of type java.lang.String from Object value (token JsonToken.START_OBJECT)
at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 1, column: