上QQ阅读APP看书，第一时间看更新
Errors representation
Error status codes of HTTP methods (4xx and 5xx) can carry client-readable information in the response body. The following rules present consistent forms of errors and error responses:
- Errors and error responses should be consistent
- Error types for generic and for common error conditions should also be consistent
The following diagram depicts a sample JSON response and addresses how errors and error codes predominate in API responses:
