FastAPI入门到精通笔记(三)

FastAPI实战教程

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已于 2024-01-31 23:43:12 修改 · 771 阅读

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#fastapi #python #网络协议 #后端

于 2022-08-26 23:29:04 首次发布

总代码

先上总代码，导入相关依赖包即可正常编译运行

from fastapi import FastAPI, Path, Query, Cookie, Header
from enum import Enum  #导入枚举类型
from typing import Optional, List
from pydantic import BaseModel, Field
from datetime import date
import uvicorn

test = FastAPI()


@test.get("/path/canshu")
def path_01():
    '''路径参数和数字验证'''
    return {
   
   "message":"This is a message"}

@test.get("/path/{canshu}")
def path_01(canshu):
    return {
   
   "message": canshu}

class CityName(str, Enum):
    Beijing = 'Slaine'
    Shanghai = 'Troyard'

@test.get("/enum/{city}")
async def latest(city: CityName):
    if city == CityName.Beijing:
        return {
   
   "city_name":city, "confirmed": 1492, "death": 9}
    if city == CityName.Shanghai:
        return {
   
   "city_name": city, "confirmed": 1550, "death": 29}
    return {
   
   "city_name":city, "latest": "unknown"}

@test.get("/file/{file_path:path}")
def filepath(file_path: str):
    '''默认都可传递\路径，有无:path直接区别能否传递/的路径'''
    return f"The file path is {
     
     file_path}"

    '''长度和正则表达式的验证，最频繁且实用的接口规则'''
@test.get("/path_wm/{num}")
def path_jy(      #下面...同None
     num : int = Path(..., title="Exanple", description="无描述", ge=1,le=10)
):

  return num


@test.get("/query")
def page_limit(page: int=1, limit: Optional[int] = None):#这里的page和limit查询两参数都已有默认值
    '''查询参数和字符串验证'''
    if limit: #如果存在limit值传入
        return {
   
   "page":page, "limit":limit}
    return {
   
   "page":page}

@test.get("/query/bool/con")
def type_con(param: bool = False): #
    '''查询参数设定默认值为Flase'''
    return param

@test.get("/query/va")
def query_pa(
    va