所有响应类都是继承于 Response
返回一些 HTML 代码
from fastapi import FastAPI
from fastapi.responses import HTMLResponse
app = FastAPI()
@app.get("/items/", response_class=HTMLResponse)
async def read_items():
return """
<html>
<head>
<title>Some HTML in here</title>
</head>
<body>
<h1>Look ma! HTML!</h1>
</body>
</html>
"""
上面的栗子中,Response Header 的 Content-type 将为 text/html,并且会记录在 OpenAPI 中
只是声明了下 media_type,其他都没变
@app.get("/items/", response_class=HTMLResponse)
from fastapi import FastAPI
from fastapi.responses import HTMLResponse
app = FastAPI()
@app.get("/items/")
async def read_items():
html_content = """
<html>
<head>
<title>Some HTML in here</title>
</head>
<body>
<h1>Look ma! HTML!</h1>
</body>
</html>
"""
# 直接返回 HTMLResponse
return HTMLResponse(content=html_content, status_code=200)
上面的栗子讲了直接 return Response 的缺点,那么可以结合使用 response_class 来避开问题
# 1、声明 response_class
@app.get("/items2/", response_class=HTMLResponse)
async def read_items():
html_content = """
<html>
<head>
<title>Some HTML in here</title>
</head>
<body>
<h1>Look ma! HTML!</h1>
</body>
</html>
"""
# 2、仍然 return HTMLResponse
return HTMLResponse(content=html_content, status_code=200)
返回一些纯文本数据
from fastapi import FastAPI
from fastapi.responses import PlainTextResponse
app = FastAPI()
@app.get("/", response_class=PlainTextResponse)
async def main():
return "Hello World"
默认是 application/json,现在改成了 text/plain
只是声明了下 media_type,其他都没变
from fastapi import FastAPI
app = FastAPI()
@app.get("/")
async def main():
return "Hello World"
默认还是 application/json,因为 FastAPI 是使用 JSONResponse 返回响应的