Flask-Restful

1.安装

pip install Flask-Restful

2.注册组件

from flask_restful import Apirest_api=Api()rest_api.init_app(app)

3.GET/POST/PUT/DELETE请求

from flask_restful import Resourceclass PostApi(Resource):    #get请求    def get(self):        pass    #post请求    def post(self):        pass    #put请求    def put(self):        pass    #delete请求    def delete(self):        pass

4.注册路由

rest_api.add_resource(PostApi,                          '/api/post',                          '/api/post/<int:post_id>',                          endpoint='api'                          )

5.格式化输出

from flask_retful import fields,marshal_with#构建格式post_fields={    'title':fields.String(),    'text':fields.String(),    'publish_date':fields.DateTime()}#注册格式class PostApi(Resource):    @marshal_with(post_fields)    def get(self,post_id=None):        if post_id:            print(post_id)            post=Post.objects(id=post_id).get_or_404()            return post        else:            args=post_get_parser.parse_args()            page=args['page'] or 1            posts=Post.objects.paginate(page=page,per_page=10).items            return posts

6.请求参数获取与限制

from flask_retful import reqparsepost_get_parser=reqparse.RequestParser()#参数名,类型限制,获取参数的位置,是否可选,错误提示post_get_parser.add_argument(    'page',    type=int,    location=['args','headers'],    required=False,    help='page out of index')class PostApi(Resource):    @marshal_with(post_fields)    def get(self,post_id=None):        if post_id:            print(post_id)            post=Post.objects(id=post_id).get_or_404()            return post        else:            #获取参数            args=post_get_parser.parse_args()            page=args['page'] or 1            posts=Post.objects.paginate(page=page,per_page=10).items            return posts