FastAPI（45）- 返回响应数据的五种常见方式

实际代码

默认情况下，路径操作函数可以返回 Python 数据类型、Pydantic Model，FastAPI 会自动将它们转换为和 JSON 兼容的数据

#!usr/bin/env python
# -*- coding:utf-8 _*-
"""
# author: 小菠萝测试笔记
# blog:  https://www.cnblogs.com/poloyy/
# time: 2021/10/3 5:03 下午
# file: 40_responses.py
"""
import uvicorn
from fastapi import FastAPI, Response
from fastapi.responses import JSONResponse
from pydantic import BaseModel

app = FastAPI()


# 1.返回字符串
@app.get("/ret_str")
def ret_str():
    return "hello fastapi"


# 2.返回字典
@app.get("/ret_dict")
def ret_dict():
    return {"id": 1, "name": "小菠萝"}


# 3.返回list
@app.get("/ret_list")
def ret_list():
    return [1, 2, 3]


class Item(BaseModel):
    id: str
    name: str


# 4.返回 Pydantic Model
@app.post("/ret_pydantic")
def ret_pydantic(item: Item):
    return item


# 5.返回 json 字符串
@app.get("/ret_json")
def ret_json():
    return "{'id': 1, 'name': '小菠萝'}"


if __name__ == '__main__':
    uvicorn.run(app="40_responses:app", reload=True, host="127.0.0.1", port=8080)