[FastAPI框架入门 基本使用, 模版渲染, form表单数据交互, 上传文件, 静态文件配置]

安装pip3 install fastapi [all]

pip3 install unicorn

pip3 install aiofiles

pip3 install HTMLResponse

pip3 install Response

pip3 install shapely

pip3 install starlette

pip3 install requests

pip3 install orjson # json 解析

pip3 install jinja2 #默认模板设置

pip3 install python-multipart #表单支持

基本使用(不能同时支持，get, post方法等要分开写)@app.get('/') # 点get就支持get请求

def read_root():

return {"hello":'world'}

模版渲染#!/usr/bin/python

# -*- coding:utf-8 -*-

import subprocess

import urllib.request

import platform

import socket,requests

import os, sys, json, datetime, time

import urllib.request

from fastapi.responses import HTMLResponse

from starlette.requests import Request

from starlette.responses import Response

from fastapi import FastAPI, Form

from fastapi import Cookie

from starlette.templating import Jinja2Templates

from starlette.staticfiles import StaticFiles

app = FastAPI()

templates = Jinja2Templates(directory="C:\\Users\\xxxx\\PycharmProjects\\FastAPI-kelan\\venv1")

@app.post("/user/")

async def create_cookie(request: Request, username: str = Form(...), password: str = Form(...)):

print('username',username)

print('password',password)

if username=='admin' and password=='admin':

return templates.TemplateResponse('index2.html', {'request': request, 'username': username})

else:

return {'status':'failed','username':username , 'password': password}

@app.get("/")

async def main(request: Request):

return templates.TemplateResponse('login.html', {'request': request})

if __name__ == '__main__':

import uvicorn

uvicorn.run(app, host='192.168.120.26', port=8886)index2.html

Title

hellokugou

login.html

fastapi本身是没有模版渲染功能的，需要你借助于第三方的模版工具

该框架默认情况下也是借助于jinja2来做模版渲染(flask也是使用jinja2, 如果用过flask, 默认是装过jinja2)

form表单数据交互&& cookie创建与使用#!/usr/bin/python

# -*- coding:utf-8 -*-

import subprocess

import urllib.request

import platform

import socket,requests

import os, sys, json, datetime, time

import urllib.request

from fastapi.responses import HTMLResponse

from starlette.requests import Request

from starlette.responses import Response

from fastapi import FastAPI, Form

from fastapi import Cookie

from starlette.templating import Jinja2Templates

from starlette.staticfiles import StaticFiles

app = FastAPI()

templates = Jinja2Templates(directory="C:\\Users\\xxxx\\PycharmProjects\\FastAPI-kelan\\venv1")

project_list = [{'id':1,'project': 'sk_platform_furniture'},

{'id':21,'project': 'sk_service_data_process'}]

env_list = [{'id':2,'env':'sit'},{'id':3,'env':'uat'}]

@app.post("/user/")

async def create_cookie(request: Request, username: str = Form(...), password: str = Form(...)):

print('username',username)

print('password',password)

if username=='admin' and password=='admin':

obj = templates.TemplateResponse('index2.html', {'request': request, 'username': username})

obj.set_cookie("dabaojian","nidongde",max_age=888)

return obj

#return templates.TemplateResponse('index2.html', {'request': request, 'username': username})

else:

return {'status':'failed','username':username , 'password': password}

@app.get("/")

async def main(request: Request):

tk = request.cookies.get('dabaojian')

print(tk, '---------------')

if not tk:

print('websocket@@@@@@@@@@@@@@env')

return templates.TemplateResponse('login.html', {'request': request})

else:

return templates.TemplateResponse('index2.html', {'request': request})

@app.get("/websocket/")

async def read_project(request: Request):

tk = request.cookies.get('dabaojian')

print(tk,'---------------')

if not tk:

print( 'websocket@@@@@@@@@@@@@@env')

return templates.TemplateResponse('login.html', {'request': request})

else:

print({"success----------------------------------"})

return templates.TemplateResponse('websocket_show2.html', {'request': request,'project_list':project_list,'env_list':env_list})

@app.post("/show_websocket/")

async def show_project(request: Request,projectname1: str = Form(...), envname1: str = Form(...)):

print(projectname1,envname1,'######################show_websocket')

tk = request.cookies.get('dabaojian')

print(tk,'---------------')

if not tk:

print( 'shwo_logs@@@@@@@@@@@@@@env')

return templates.TemplateResponse('login.html', {'request': request})

else:

logs_an = {projectname1:envname1}

print({"success----------------------------------"})

return templates.TemplateResponse('websocket_show2.html', {'request': request,'logs_an':logs_an,'project_list':project_list,'env_list':env_list})

if __name__ == '__main__':

import uvicorn

uvicorn.run(app, host='192.168.120.26', port=8886)index2.html

Title

hellokugou

show_websocket2.html

Title

show websocket

项目名：

请选择项目

{% for row in project_list %}

{{ row.project }}

{% endfor %}

环 境 ：

请选择环境

{% for row in env_list %}

{{ row.env }}

{% endfor %}

home

不用乱点，其他功能都没加------------懒

注意： 如果要使用request.form()支持表单“解析”，则为必需 python-multipart 。

index

上传文件from starlette.requests import Request

from fastapi import FastAPI, Form, File, UploadFile

from starlette.templating import Jinja2Templates

from typing import List

from starlette.staticfiles import StaticFiles

app = FastAPI()

# 挂载模板文件夹

tmp = Jinja2Templates(directory='C:\\Users\\xxxx\\PycharmProjects\\FastAPI-kelan\\venv1')

app.mount("/static", StaticFiles(directory="C:\\Users\\xxxx\\PycharmProjects\\FastAPI-kelan\\venv1\\static"), name="static")

@app.get('/') # 接受get请求

async def get_file(request: Request):

return tmp.TemplateResponse('file.html', {'request': request})

# 单个文件

@app.post('/one/')

async def get_user(request: Request,

file: bytes = File(...), # # 把文件对象转为bytes类型,这种类型的文件无法保存

file_obj: UploadFile = File(...), # UploadFile转为文件对象，可以保存文件到本地

info: str = Form(...) # 获取普通键值对

):

# 保存上传的文件

contents = await file_obj.read()

with open("/static/file/" + file_obj.filename, "wb") as f:

f.write(contents)

return tmp.TemplateResponse('upload.html', {

'request': request,

'file_size': len(file),

'file_name': file_obj.filename,

'info':info,

'file_content_type':file_obj.content_type

})

# 多个文件

@app.post('/more/')

async def get_files(request:Request,

files_list:List[bytes] = File(...), # [使用二进制数据]

files_obj_list:List[UploadFile]=File(...) # [file_obj1,file_obj2,....] #可以同时上传多个文件

):

# 保存上传的多个文件

for file in files_obj_list:

contents = await file.read()

filename = file.filename

with open("static/file/" + filename, "wb") as f:

f.write(contents)

return tmp.TemplateResponse('upload.html',

{'request':request,

'file_sizes':[len(file) for file in files_list],

'file_names':[file_obj.filename for file_obj in files_obj_list]

}

)

if __name__ == '__main__':

import uvicorn

uvicorn.run(app, host='192.168.120.26', port=8886)upload.html

Title

单个文件

{{ file_size }}

{{ file_name }}

{{ info }}

{{ file_content_type }}

多个文件

{{ file_sizes }}

{{ file_names }}

file.html

Title

单个文件

多个文件

{# multiple参数支持一次性传多个文件 #}

上传文件-显示

注意 file 目录需要提前创建

静态文件配置

1.使用 HTMLResponse 在python代码中体现html@app.get("/logs/{Jenvironment}/{project}")

def read_project_logs(project: str,Jenvironment: str):

print(project, '#######################project')

print(Jenvironment, '@@@@@@@@@@@@@@env')

#print(ansible_project_websocket_port(project,Jenvironment),"$$$ansible_project_websocket_port-LIst")

html_content = """

config-center

{tansiblestr}

""".format(tansiblestr=ansible_project_logs(project,Jenvironment))

return HTMLResponse(content=html_content, status_code=200)

2.需要安装aiofiles模块from starlette.staticfiles import StaticFiles

app = FastAPI()

app.mount("/static", StaticFiles(directory="C:\\Users\\xxxx\\PycharmProjects\\FastAPI-kelan\\venv1\\static"), name="static")StaticFiles

layout.html

{% block css %}{% endblock %}

{% block js %}{% endblock %}

当 staic目录设置之后，基本就和django 一样使用 bootstrap等等了。