[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
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
- 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 xx %}{% 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。