处理 POST 请求#

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from fastapi import FastAPI
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from pydantic import BaseModel
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from typing import List
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app = FastAPI()
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class TodoCreate(BaseModel):
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    title: str
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# 模拟数据库（实际用 SQLite 或 PostgreSQL）
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todos = []
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@app.get("/todos", response_model=List[TodoCreate])
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def get_todos():
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    return todos
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@app.post("/todos")
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def add_todo(todo: TodoCreate):
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    todos.append(todo)
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    return {"message": "Todo added", "todo": todo}