1.自定义API异常

class APIException(HTTPException):
    code = 500
    msg = 'sorry, we made a mistake (*￣︶￣)!'
    error_code = 999

    def __init__(self, msg=None, code=None, error_code=None,
                 headers=None):
        if code:
            self.code = code
        if error_code:
            self.error_code = error_code
        if msg:
            self.msg = msg
        super(APIException, self).__init__(msg, None)

    def get_body(self, environ=None):
        body = dict(
            msg=self.msg,
            error_code=self.error_code,
            request=request.method + ' ' + self.get_url_no_param()
        )
        text = json.dumps(body)
        return text

    def get_headers(self, environ=None):
        """Get a list of headers."""
        return [('Content-Type', 'application/json')]

    @staticmethod
    def get_url_no_param():
        full_path = str(request.full_path)
        main_path = full_path.split('?')
        return main_path[0]

2.自定义异常码

class Success(APIException):
    code = 201
    msg = 'ok'
    error_code = 0


class DeleteSuccess(Success):
    code = 202
    error_code = 1


class ServerError(APIException):
    code = 500
    msg = 'sorry, we made a mistake (*￣︶￣)!'
    error_code = 999


class ClientTypeError(APIException):
    # 400 401 403 404
    # 500
    # 200 201 204
    # 301 302
    code = 400
    msg = 'client is invalid'
    error_code = 1006


class ParameterException(APIException):
    code = 400
    msg = 'invalid parameter'
    error_code = 1000


class NotFound(APIException):
    code = 404
    msg = 'the resource are not found O__O...'
    error_code = 1001


class AuthFailed(APIException):
    code = 401
    error_code = 1005
    msg = 'authorization failed'


class Forbidden(APIException):
    code = 403
    error_code = 1004
    msg = 'forbidden, not in scope'