路由

add_url_rule

实现Methodview

api.py

python
class FileApi(MethodView):
    """
    后端接口部分 RESTful API风格
    """

    def __init__(self):
        super(FileApi, self).__init__()

    def get(self, fid):
        """
        查询数据
        :param fid: 文件id
        :return: json
        """
        try:
            if not fid:
                files: [File] = File.query.all()
                results = [
                    {
                        'fid': file.fid,
                        'name': file.name,
                        'timestamp': file.timestamp,
                        'type': file.type,
                        'origin': file.origin,
                        'width': file.width,
                        'height': file.height,
                        'url': file.url
                    }
                    for file in files
                ]

            else:
                file = File.query.get(fid)
                results = {
                    'fid': file.fid,
                    'name': file.name,
                    'timestamp': file.timestamp,
                    'type': file.type,
                    'origin': file.origin,
                    'width': file.width,
                    'height': file.height,
                    'url': file.url
                }

            return {
                'status': 'success',
                'message': '数据查询成功',
                'results': results
            }

        except Exception as e:
            return {
                'status': 'error',
                'message': '数据查询出现异常',
                'info': str(e)
            }

    def delete(self, fid):
        """
        删除操作
        :param fid: 文件id
        :return: json
        """
        try:
            file: File = File.query.get(fid)
            file.fp = 1
            # db.session.delete(file)
            db.session.commit()

            return {
                'status': 'success',
                'message': '数据删除成功',
            }
        except Exception as e:
            return {
                'status': 'error',
                'message': '数据删除出现异常',
                'info': str(e)
            }

    def post(self):  # 添加数据

app.py

python
file_view = FileApi.as_view('file_api')
app.add_url_rule('/files/', defaults={'fid': None},
                 view_func=file_view, methods=['GET'])  # 查询
app.add_url_rule('/files', view_func=file_view, methods=['POST'])  # 添加
app.add_url_rule('/files/<int:fid>', view_func=file_view,
                 methods=['GET', 'DELETE'])  # 查询，删除

使用@app.route

python
@app.route('/getPic',methods=['GET', 'POST'])
def get_image():
    return send_file('./current.jpg', mimetype='image/gif')