{"id":61230,"date":"2026-01-17T08:34:50","date_gmt":"2026-01-17T00:34:50","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/61230.html"},"modified":"2026-01-17T08:34:50","modified_gmt":"2026-01-17T00:34:50","slug":"%e5%9f%ba%e4%ba%8efastapi%e7%9a%84api%e5%bc%80%e5%8f%91%ef%bc%88%e7%88%ac%e8%99%ab%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86%ef%bc%8c%e6%9c%8d%e5%8a%a1%e5%99%a8%e6%8e%a5%e5%8f%a3%e6%90%ad%e5%bb%ba","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/61230.html","title":{"rendered":"\u57fa\u4e8eFastAPI\u7684API\u5f00\u53d1\uff08\u722c\u866b\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u670d\u52a1\u5668\u63a5\u53e3\u642d\u5efa\uff09\uff1a\u4ece\u8bbe\u8ba1\u5230\u90e8\u7f72\u8be6\u89e3+\u9762\u8bd5\u4e60\u9898"},"content":{"rendered":"

API（Application Programming Interface）\u662f\u4e0d\u540c\u8f6f\u4ef6\u7cfb\u7edf\u4e4b\u95f4\u7684\u901a\u4fe1\u63a5\u53e3，\u662f\u73b0\u4ee3\u8f6f\u4ef6\u67b6\u6784\u7684\u6838\u5fc3\u7ec4\u4ef6\u3002\u672c\u6587\u5c06\u4ece \u57fa\u7840\u6982\u5ff5\u5230\u5b9e\u9645\u5b9e\u73b0 ，\u8be6\u7ec6\u8bb2\u89e3API\u5f00\u53d1\u7684\u5168\u6d41\u7a0b\u3002<\/p>\n

\u4e00\u3001API\u57fa\u7840\u6982\u5ff5<\/h2>\n

1. \u4ec0\u4e48\u662fAPI？<\/h3>\n

API\u662f\u4e00\u7ec4\u5b9a\u4e49\u7684\u89c4\u5219\u548c\u534f\u8bae，\u5141\u8bb8\u4e00\u4e2a\u8f6f\u4ef6\u7cfb\u7edf\u4e0e\u53e6\u4e00\u4e2a\u8f6f\u4ef6\u7cfb\u7edf\u4ea4\u4e92，\u800c\u65e0\u9700\u4e86\u89e3\u5176\u5185\u90e8\u5b9e\u73b0\u7ec6\u8282\u3002<\/p>\n

\u4f8b\u5982：<\/p>\n

– \u5929\u6c14\u5e94\u7528\u901a\u8fc7\u5929\u6c14API\u83b7\u53d6\u5b9e\u65f6\u5929\u6c14\u6570\u636e – \u79fb\u52a8\u5e94\u7528\u901a\u8fc7\u540e\u7aefAPI\u4e0e\u670d\u52a1\u5668\u901a\u4fe1<\/p>\n

2. API\u7684\u7c7b\u578b<\/h3>\n

– REST API ：\u57fa\u4e8eHTTP\u534f\u8bae，\u4f7f\u7528\u6807\u51c6HTTP\u65b9\u6cd5，\u662f\u76ee\u524d\u6700\u6d41\u884c\u7684API\u7c7b\u578b – GraphQL API ：\u5141\u8bb8\u5ba2\u6237\u7aef\u7cbe\u786e\u8bf7\u6c42\u6240\u9700\u6570\u636e，\u51cf\u5c11\u7f51\u7edc\u4f20\u8f93 – SOAP API ：\u57fa\u4e8eXML\u7684\u91cd\u91cf\u7ea7API，\u4e3b\u8981\u7528\u4e8e\u4f01\u4e1a\u7ea7\u5e94\u7528 – WebSocket API ：\u63d0\u4f9b\u53cc\u5411\u5b9e\u65f6\u901a\u4fe1，\u9002\u5408\u804a\u5929\u3001\u5b9e\u65f6\u66f4\u65b0\u7b49\u573a\u666f<\/p>\n

\u4f5c\u8005\u6709\u8bdd\u8bf4：<\/span>API\u5f00\u53d1\u4e00<\/span>\u822c\u90fd\u662fWebAPI\u5f00\u53d1\u3002<\/p>\n

3. API\u6838\u5fc3\u539f\u5219<\/h3>\n

REST（Representational State Transfer）\u662f\u4e00\u79cdAPI\u8bbe\u8ba1\u98ce\u683c，\u9075\u5faa\u4ee5\u4e0b\u539f\u5219：<\/p>\n

– \u8d44\u6e90\u4e3a\u4e2d\u5fc3 ：\u4f7f\u7528URL\u8868\u793a\u8d44\u6e90（\u5982 \/users \u3001 \/products\/123 ）<\/p>\n

– HTTP\u65b9\u6cd5\u8868\u793a\u64cd\u4f5c ： \u00a0 – GET ：\u83b7\u53d6\u8d44\u6e90 \u00a0 – POST ：\u521b\u5efa\u8d44\u6e90 \u00a0 – PUT ：\u66f4\u65b0\u8d44\u6e90 \u00a0 – PATCH ：\u90e8\u5206\u66f4\u65b0\u8d44\u6e90 \u00a0 – DELETE ：\u5220\u9664\u8d44\u6e90<\/p>\n

– \u65e0\u72b6\u6001 ：\u6bcf\u4e2a\u8bf7\u6c42\u90fd\u5305\u542b\u5b8c\u6574\u7684\u72b6\u6001\u4fe1\u606f，\u670d\u52a1\u5668\u4e0d\u4fdd\u5b58\u5ba2\u6237\u7aef\u72b6\u6001 – \u7edf\u4e00\u63a5\u53e3 ：\u4f7f\u7528\u6807\u51c6HTTP\u72b6\u6001\u7801\u548c\u5934\u4fe1\u606f – \u8d44\u6e90\u8868\u793a ：\u4f7f\u7528JSON\u6216XML\u8868\u793a\u8d44\u6e90<\/p>\n

\u4e8c\u3001HTTP\u8bf7\u6c42\u683c\u5f0f<\/h2>\n<\/p>\n

GET\u8bf7\u6c42：\u00a0\u67e5\u8be2\u8bf7\u6c42（get\u8bf7\u6c42）\u4e00\u822c\u8bf7\u6c42\u4f53\u4e3a\u7a7a<\/p>\n

\"\"<\/p>\n

\u56db\u3001HTTP\u54cd\u5e94\u683c\u5f0f<\/h2>\n<\/p>\n

post\u8bf7\u6c42：\u63d0\u4ea4\u4fee\u6539\u8bf7\u6c42（\u9690\u79d8\u6570\u636e\u4fee\u6539post\u8bf7\u6c42）\u4e00\u822c\u52a0\u5bc6；\u8bf7\u6c42\u4f53\u4e00\u822c\u4e0d\u663e\u793a\u5728URL\u4e2d<\/p>\n

\\\\r\\\\n\\\\r\\\\n:\u6362\u884c\u8bf7\u6c42\u4f53\u548c\u8bf7\u6c42\u884c\u4e2d\u95f4\u4e00\u4e2a\u7a7a\u884c<\/p>\n

\u54cd\u5e94\u534f\u8bae\u683c\u5f0f<\/p>\n

\"\"<\/p>\n

\u56de\u6765\u6d41\u7a0b：<\/p>\n

\"\"<\/p>\n

\u4e94\u3001API\u8bbe\u8ba1：\u89c4\u8303\u4e0e\u6700\u4f73\u5b9e\u8df5<\/h2>\n

1. \u8bbe\u8ba1\u6d41\u7a0b<\/h3>\n

1. \u9700\u6c42\u5206\u6790 ：\u660e\u786eAPI\u7684\u529f\u80fd\u548c\u4f7f\u7528\u573a\u666f 2. \u8d44\u6e90\u5efa\u6a21 ：\u8bc6\u522b\u7cfb\u7edf\u4e2d\u7684\u6838\u5fc3\u8d44\u6e90（\u5982\u7528\u6237\u3001\u4ea7\u54c1\u3001\u8ba2\u5355） 3. \u8def\u5f84\u8bbe\u8ba1 ：\u4e3a\u6bcf\u4e2a\u8d44\u6e90\u5b9a\u4e49\u6e05\u6670\u7684URL\u8def\u5f84 4. \u53c2\u6570\u8bbe\u8ba1 ：\u5b9a\u4e49\u67e5\u8be2\u53c2\u6570\u3001\u8def\u5f84\u53c2\u6570\u548c\u8bf7\u6c42\u4f53 5. \u54cd\u5e94\u8bbe\u8ba1 ：\u5b9a\u4e49\u54cd\u5e94\u683c\u5f0f\u548c\u72b6\u6001\u7801 6. \u8ba4\u8bc1\u6388\u6743 ：\u8bbe\u8ba1\u5b89\u5168\u673a\u5236<\/p>\n

2. URL\u8def\u5f84\u8bbe\u8ba1<\/h3>\n

– \u4f7f\u7528\u590d\u6570\u540d\u8bcd ： \/users \u800c\u975e \/user – \u5d4c\u5957\u8d44\u6e90 ：\u8868\u793a\u8d44\u6e90\u4e4b\u95f4\u7684\u5173\u7cfb，\u5982 \/users\/123\/orders – \u907f\u514d\u52a8\u8bcd ：\u4f7f\u7528HTTP\u65b9\u6cd5\u8868\u793a\u64cd\u4f5c，\u800c\u975eURL\u4e2d\u5305\u542b\u52a8\u8bcd（\u5982 \/users\/123 \u800c\u975e \/getUser\/123 ） – \u4fdd\u6301\u7b80\u6d01 ：\u907f\u514d\u8fc7\u957f\u6216\u590d\u6742\u7684\u8def\u5f84<\/p>\n

URL：\u672c\u8d28\u4e0a\u662f\u5411\u670d\u52a1\u5668\u589e\u5220\u6539\u67e5\u6570\u636e，\u591a\u6570\u662f\u67e5<\/p>\n

\u534f\u8bae：\/\/\u57df\u540d\/\u8def\u5f84？\u67e5\u5bfb\u53c2\u6570<\/p>\n

3. \u8bf7\u6c42\u4e0e\u54cd\u5e94\u8bbe\u8ba1 \u8bf7\u6c42\u8bbe\u8ba1<\/h3>\n<\/p>\n

– \u8def\u5f84\u53c2\u6570 ：\u7528\u4e8e\u6807\u8bc6\u7279\u5b9a\u8d44\u6e90（\u5982 \/users\/{id} ） – \u67e5\u8be2\u53c2\u6570 ：\u7528\u4e8e\u8fc7\u6ee4\u3001\u6392\u5e8f\u548c\u5206\u9875（\u5982 \/users?page=1&limit=10 ） – \u8bf7\u6c42\u4f53 ：\u7528\u4e8e\u521b\u5efa\u6216\u66f4\u65b0\u8d44\u6e90，\u901a\u5e38\u4f7f\u7528JSON\u683c\u5f0f – \u5934\u4fe1\u606f ：\u7528\u4e8e\u4f20\u9012\u5143\u6570\u636e（\u5982\u8ba4\u8bc1\u4ee4\u724c\u3001\u5185\u5bb9\u7c7b\u578b） \u54cd\u5e94\u8bbe\u8ba1<\/p>\n

– \u4f7f\u7528\u6807\u51c6HTTP\u72b6\u6001\u7801 ：<\/p>\n

\u00a0 – 200 OK：\u8bf7\u6c42\u6210\u529f \u00a0 – 201 Created：\u8d44\u6e90\u521b\u5efa\u6210\u529f \u00a0 – 204 No Content：\u8bf7\u6c42\u6210\u529f\u4f46\u65e0\u54cd\u5e94\u4f53 \u00a0 – 400 Bad Request：\u8bf7\u6c42\u683c\u5f0f\u9519\u8bef \u00a0 – 401 Unauthorized：\u672a\u6388\u6743 \u00a0 – 403 Forbidden：\u7981\u6b62\u8bbf\u95ee \u00a0 – 404 Not Found：\u8d44\u6e90\u672a\u627e\u5230 \u00a0 – 500 Internal Server Error：\u670d\u52a1\u5668\u5185\u90e8\u9519\u8bef<\/p>\n

– \u7edf\u4e00\u54cd\u5e94\u683c\u5f0f（\u5b57\u5178\u5185\u5957\u5b57\u5178） ：<\/p>\n

{ \u00a0 "status": "success", \u00a0 "data": {…}, \u00a0\/\/ \u54cd\u5e94\u6570\u636e \u00a0 "message": "\u8bf7\u6c42\u6210\u529f" }<\/p>\n

\u9519\u8bef\u54cd\u5e94 （\u5b57\u5178\u5185\u5957\u5b57\u5178\u53c8\u5957\u5217\u8868）：<\/p>\n

{ \u00a0 "status": "error", \u00a0 "error": { \u00a0 \u00a0 "code": "INVALID_PARAMETER", \u00a0 \u00a0 "message": "\u53c2\u6570\u9a8c\u8bc1\u5931\u8d25", \u00a0 \u00a0 "details": [ \u00a0 \u00a0 \u00a0 {"field": "email", "message": "\u5fc5\u987b\u662f\u6709\u6548\u7684\u90ae\u7bb1\u5730\u5740"} \u00a0 \u00a0 ] \u00a0 } }<\/p>\n

\u8fd4\u56de\u4e24\u79cd\u683c\u5f0f：josn\u548cHTML<\/p>\n

josn：\u63d0\u4f9b\u63a5\u53e3<\/p>\n

HTML：\u63d0\u4f9b\u7ed9\u7528\u6237<\/p>\n

4. \u6570\u636e\u9a8c\u8bc1<\/h3>\n

– \u8bf7\u6c42\u53c2\u6570\u9a8c\u8bc1 ：\u786e\u4fdd\u4f20\u5165\u7684\u6570\u636e\u7b26\u5408\u9884\u671f\u683c\u5f0f\u548c\u7ea6\u675f – \u6570\u636e\u7c7b\u578b\u9a8c\u8bc1 ：\u68c0\u67e5\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u3001\u65e5\u671f\u7b49\u7c7b\u578b – \u4e1a\u52a1\u89c4\u5219\u9a8c\u8bc1 ：\u68c0\u67e5\u6570\u636e\u662f\u5426\u6ee1\u8db3\u4e1a\u52a1\u903b\u8f91\u8981\u6c42（\u5982\u90ae\u7bb1\u552f\u4e00\u6027）<\/p>\n

\u516d\u3001API\u5f00\u53d1\u5b9e\u73b0<\/h2>\n

1.\u4ec0\u4e48\u662f\u6846\u67b6？<\/h3>\n

\u5c31\u76f8\u5f53\u4e8e\u4e00\u4e2a\u6a21\u7248，\u6211\u5728\u8fd9\u4e2a\u6a21\u7248\u4e0a\u505a\u4e00\u4e9b\u4fee\u6539\u3002<\/p>\n

2.\u4e0b\u8f7d\u6846\u67b6<\/h3>\n

pip install fastapi uvicorn <\/p>\n

3.\u4ee3\u7801\u64b0\u5199（\u7528AI\u7ed9\u4f60\u4e00\u4e2a\u6848\u4f8b，\u73b0\u5728\u6309\u7167\u6211\u751f\u6210\u8fd9\u4e2a\u6765\u6f14\u793a）<\/h3>\n

from fastapi import FastAPI
\nfrom pydantic import BaseModel
\nfrom typing import List<\/p>\n

# \u521b\u5efaFastAPI\u5e94\u7528\u5b9e\u4f8b\u5bf9\u8c61
\napp = FastAPI(
\n title="\u7b80\u5355FastAPI\u793a\u4f8b",
\n description="\u8fd9\u662f\u4e00\u4e2a\u57fa\u7840\u7684FastAPI\u5e94\u7528\u793a\u4f8b",
\n version="1.0.0"
\n)<\/p>\n

# \u5b9a\u4e49\u6570\u636e\u6a21\u578b
\n# \u7528\u6237\u6a21\u578b,(\u76f8\u5f53\u4e8e\u5f3a\u5236\u6570\u636e\u7c7b\u578b)
\nclass User(BaseModel):
\n name: str
\n id: int
\n email: str<\/p>\n

# \u793a\u4f8b：\u521b\u5efa\u4e00\u4e2a users \u5217\u8868，\u5b58\u653e User \u6a21\u578b\u5b9e\u4f8b
\n#\u6a21\u62df\u6570\u636e\u5e93
\nusers_list = [
\n User(name="\u5f20\u4e09", id=1, email="zhangsan@example.com"),
\n User(name="\u674e\u56db", id=2, email="lisi@example.com"),
\n User(name="\u738b\u4e94", id=3, email="wangwu@example.com"),
\n]<\/p>\n

# \u5b9a\u4e49GET\u8bf7\u6c42
\n# \u83b7\u53d6\u6240\u6709\u7528\u6237
\n# \u54cd\u5e94\u6a21\u578b\u4e3a List[User]，\u8868\u793a\u8fd4\u56de\u4e00\u4e2a\u7528\u6237\u5217\u8868 \u8fd4\u56de\u7684\u6570\u636e\u683c\u5f0f\u5fc5\u987b\u4e3a User \u6a21\u578b\u7684\u683c\u5f0f
\n# \u8def\u5f84\u4e3a \/users，HTTP \u65b9\u6cd5\u4e3a GET
\n# \u51fd\u6570 get_users \u8fd4\u56de users_list \u5217\u8868
\n@app.get(path="\/users",response_model=List[User])
\ndef get_users():
\n return users_list<\/p>\n

# \u5b9a\u4e49POST\u8bf7\u6c42
\n# \u521b\u5efa\u7528\u6237
\n# \u8bf7\u6c42\u6a21\u578b\u4e3a User，\u54cd\u5e94\u6a21\u578b\u4e5f\u4e3a User (\u63d0\u4ea4\u7684\u6570\u636e\u683c\u5f0f\u5fc5\u987b\u4e3a User \u6a21\u578b\u7684\u683c\u5f0f)
\n# \u8def\u5f84\u4e3a \/users，HTTP \u65b9\u6cd5\u4e3a POST
\n# \u51fd\u6570 create_users \u63a5\u6536\u4e00\u4e2a User \u5b9e\u4f8b\u4f5c\u4e3a\u53c2\u6570，\u5c06\u5176\u6dfb\u52a0\u5230 users_list \u5217\u8868\u4e2d，\u5e76\u8fd4\u56de\u8be5\u5b9e\u4f8b
\n@app.post(path="\/users",response_model=User)
\ndef create_users(user:User):
\n users_list.append(user)
\n return user<\/p>\n

# \u5b9a\u4e49PUT\u8bf7\u6c42
\n# \u66f4\u65b0\u7528\u6237
\n# \u8bf7\u6c42\u6a21\u578b\u4e3a User，\u54cd\u5e94\u6a21\u578b\u4e5f\u4e3a User (\u63d0\u4ea4\u7684\u6570\u636e\u683c\u5f0f\u5fc5\u987b\u4e3a User \u6a21\u578b\u7684\u683c\u5f0f)
\n# \u8def\u5f84\u4e3a \/users\/{user_id}，HTTP \u65b9\u6cd5\u4e3a PUT
\n# \u51fd\u6570 update_users \u63a5\u6536\u4e00\u4e2a User \u5b9e\u4f8b\u4f5c\u4e3a\u53c2\u6570，\u5c06\u5176\u6dfb\u52a0\u5230 users_list \u5217\u8868\u4e2d，\u5e76\u8fd4\u56de\u8be5\u5b9e\u4f8b
\n@app.put(path="\/users\/{user_id}",response_model=User)
\ndef update_users(user_id:int,user:User):
\n for u in users_list:
\n if u.id == user_id:
\n u.name = user.name
\n u.email = user.email
\n return u
\n return {"error": "User not found"}<\/p>\n

# \u5b9a\u4e49DELETE\u8bf7\u6c42
\n# \u5220\u9664\u7528\u6237
\n# \u8bf7\u6c42\u6a21\u578b\u4e3a User，\u54cd\u5e94\u6a21\u578b\u4e5f\u4e3a User (\u63d0\u4ea4\u7684\u6570\u636e\u683c\u5f0f\u5fc5\u987b\u4e3a User \u6a21\u578b\u7684\u683c\u5f0f)
\n# \u8def\u5f84\u4e3a \/users\/{user_id}，HTTP \u65b9\u6cd5\u4e3a DELETE
\n# \u51fd\u6570 delete_users \u63a5\u6536\u4e00\u4e2a User \u5b9e\u4f8b\u4f5c\u4e3a\u53c2\u6570，\u5c06\u5176\u4ece users_list \u5217\u8868\u4e2d\u5220\u9664，\u5e76\u8fd4\u56de\u8be5\u5b9e\u4f8b
\n@app.delete(path="\/users\/{user_id}",response_model=User)
\ndef delete_users(user_id:int):
\n for u in users_list:
\n if u.id == user_id:
\n users_list.remove(u)
\n return u
\n return {"error": "User not found"}<\/p>\n

#\u670d\u52a1\u5668\u542f\u52a8\u5668
\n# \u5f53\u76f4\u63a5\u8fd0\u884c\u8be5\u811a\u672c\u65f6，\u542f\u52a8 FastAPI \u5e94\u7528
\n# \u76d1\u542c\u4e3b\u673a\u4e3a 127.0.0.1，\u7aef\u53e3\u4e3a 8001
\nif __name__ == "__main__":
\n import uvicorn
\n uvicorn.run(app, host="127.0.0.1", port=8001) <\/p>\n

4.\u8fd0\u884c\u5c55\u793a<\/h3>\n

\"\"<\/p>\n

\u6700\u4e0b\u65b9\u4e3aURL，\u70b9\u51fb\u94fe\u63a5\u8df3\u8f6c\u672c\u5730\u6d4f\u89c8\u5668；<\/p>\n

\"\"<\/p>\n

\u56e0\u4e3a\u6211\u4eec\u5e76\u6ca1\u6709\u5728129.0.0.1:8000\u8fd9\u4e2aURL\u914d\u7f6e\u4efb\u4f55\u4e1c\u897f，\u4f7f\u7528\u5bf9\u4e8efastapi\u8fd9\u4e2a\u6a21\u7248\u4f1a\u7ed9\u4f60\u8fd4\u56dejosn\u683c\u5f0f\u7684<\/p>\n

{
\n "detail": "Not Found"
\n} <\/p>\n

\u540e\u53f0\u53cd\u9988：<\/p>\n

\"\"<\/p>\n

\u4e0b\u4e00\u6b65\u6211\u4eec\u8bbf\u95ee\u6211\u4eec\u5b9a\u4e49\u8fc7\u7684：127.0.0.1:8000\/users<\/p>\n

\"\"<\/p>\n

[
\n {
\n "name": "\u5f20\u4e09",
\n "id": 1,
\n "email": "zhangsan@example.com"
\n },
\n {
\n "name": "\u674e\u56db",
\n "id": 2,
\n "email": "lisi@example.com"
\n },
\n {
\n "name": "\u738b\u4e94",
\n "id": 3,
\n "email": "wangwu@example.com"
\n }
\n] <\/p>\n

\u00a0\u540e\u53f0\u53cd\u9988：<\/p>\n

\"\"<\/p>\n

\u4e0a\u9762\u76f8\u5f53\u4e8e\u8fd0\u884c\u4ee3\u7801\u7684\u8bf7\u6c42\u90e8\u5206：<\/p>\n

\"\"<\/p>\n

5.\u5411\u670d\u52a1\u5668\u53d1\u9001\u4e00\u4e2apost\u8bf7\u6c42<\/h3>\n

\u4e0b\u9762\u6211\u4eec\u51c6\u5907\u6267\u884cpost\u64cd\u4f5c，\u9996\u5148\u6267\u884cpost\u6211\u4eec\u7684\u6d4f\u89c8\u5668\u662f\u4e0d\u652f\u6301\u8fd9\u79cd\u64cd\u4f5c，\u9700\u8981\u501f\u52a9\u4e09\u65b9\u5de5\u5177：<\/p>\n

postman；<\/p>\n

\u56e0\u6b64\u6211\u5728\u7f51\u4e0a\u627e\u5230\u4e00\u4e2a\u5728\u7ebf\u5de5\u5177：\u5728\u7ebfHttp\u63a5\u53e3\u8c03\u8bd5\u5de5\u5177 | \u5728\u7ebfpostman\u5de5\u5177<\/p>\n

\u4e0b\u9762\u662f\u6211\u4ee3\u7801\u7684post\u8bf7\u6c42\u8bbe\u8ba1：<\/p>\n

\"\"<\/p>\n

\u4ee5\u53ca\u63a5\u6536\u6570\u636e\u683c\u5f0f：<\/p>\n

\"\"<\/p>\n

\u5728\u7ebf\u5de5\u5177\u9875\u9762：<\/p>\n

\"\"<\/p>\n

\u64cd\u4f5c\u91cd\u70b9：<\/span><\/p>\n

1.\u5c06\u8bf7\u6c42\u65b9\u5f0f\u8f6c\u6362\u6210post\u8bf7\u6c42<\/p>\n

2.\u8f93\u5165\u5bf9\u5e94URL\u53ca\u8def\u5f84<\/p>\n

3.\u9009\u62e9application\u4e0b\u7684josn\u683c\u5f0f<\/p>\n

4.\u6570\u636e\u683c\u5f0f\u5fc5\u987b\u6309\u7167\u5b9a\u4e49\u7684\u6765<\/p>\n

\u5982\u56fe：<\/p>\n

\"\"<\/p>\n

\u70b9\u51fb\u53d1\u9001：<\/p>\n

\u51fa\u73b0\u5982\u4e0b\u62a5\u9519：<\/p>\n

\"\"<\/p>\n

\u670d\u52a1\u5668\u7aef：<\/p>\n

\"\"<\/p>\n

\u9519\u8bef\u542b\u4e49<\/p>\n

– OPTIONS \/users ：\u6d4f\u89c8\u5668\u53d1\u9001\u4e86\u4e00\u4e2aOPTIONS\u7c7b\u578b\u7684HTTP\u8bf7\u6c42\u5230\/users\u7aef\u70b9 – 405 Method Not Allowed ：\u670d\u52a1\u5668\u4e0d\u5141\u8bb8\u4f7f\u7528OPTIONS\u65b9\u6cd5\u8bbf\u95ee\u8be5\u7aef\u70b9<\/p>\n

\u4f5c\u8005\u63d0\u95ee：<\/span>\u4e3a\u4ec0\u4e48\u4f1a\u53d1\u751f\u8fd9\u4e2a\u9519\u8bef？<\/p>\n

\u8fd9\u662f CORS（\u8de8\u57df\u8d44\u6e90\u5171\u4eab） \u673a\u5236\u5bfc\u81f4\u7684：<\/p>\n

1. \u5f53\u6d4f\u89c8\u5668\u4ece\u4e00\u4e2a\u57df\u540d（\u5982 http:\/\/localhost:3000 ）\u8bbf\u95ee\u53e6\u4e00\u4e2a\u57df\u540d（\u5982http:\/\/127.0.0.1:8001）\u7684API\u65f6 2. \u6d4f\u89c8\u5668\u4f1a\u5148\u53d1\u9001\u4e00\u4e2a \u9884\u68c0\u8bf7\u6c42（OPTIONS\u8bf7\u6c42） \u6765\u68c0\u67e5\u670d\u52a1\u5668\u662f\u5426\u5141\u8bb8\u8de8\u57df\u8bbf\u95ee 3. \u5982\u679c\u670d\u52a1\u5668\u6ca1\u6709\u914d\u7f6eCORS\u6216\u6ca1\u6709\u5904\u7406OPTIONS\u8bf7\u6c42，\u5c31\u4f1a\u8fd4\u56de405\u9519\u8bef<\/p>\n

\u89e3\u51b3\u65b9\u6848：\u5728FastAPI\u4e2d\u6dfb\u52a0CORS\u652f\u6301<\/p>\n

# \u914d\u7f6eCORS<\/p>\n

app.add_middleware(<\/p>\n

\u00a0 \u00a0 CORSMiddleware,<\/p>\n

\u00a0 \u00a0 allow_origins=["*"], \u00a0# \u5141\u8bb8\u6240\u6709\u6765\u6e90，\u751f\u4ea7\u73af\u5883\u5e94\u9650\u5236\u5177\u4f53\u57df\u540d<\/p>\n

\u00a0 \u00a0 allow_credentials=True,<\/p>\n

\u00a0 \u00a0 allow_methods=["*"], \u00a0# \u5141\u8bb8\u6240\u6709HTTP\u65b9\u6cd5<\/p>\n

\u00a0 \u00a0 allow_headers=["*"], \u00a0# \u5141\u8bb8\u6240\u6709\u8bf7\u6c42\u5934<\/p>\n

)<\/p>\n

\u914d\u7f6e\u8bf4\u660e<\/p>\n

– allow_origins : \u6307\u5b9a\u5141\u8bb8\u7684\u57df\u540d， ["*"] \u8868\u793a\u5141\u8bb8\u6240\u6709\u57df\u540d – allow_credentials : \u662f\u5426\u5141\u8bb8\u53d1\u9001cookie – allow_methods : \u6307\u5b9a\u5141\u8bb8\u7684HTTP\u65b9\u6cd5 – allow_headers : \u6307\u5b9a\u5141\u8bb8\u7684\u8bf7\u6c42\u5934<\/p>\n

\u6548\u679c：\u6dfb\u52a0CORS\u4e2d\u95f4\u4ef6\u540e：<\/p>\n

– \u6d4f\u89c8\u5668\u7684OPTIONS\u9884\u68c0\u8bf7\u6c42\u4f1a\u5f97\u5230\u6b63\u786e\u54cd\u5e94 – \u8de8\u57df\u8bf7\u6c42（\u5982\u4eceReact\/Vue\u524d\u7aef\u8c03\u7528API）\u4f1a\u6b63\u5e38\u5de5\u4f5c – \u4e0d\u518d\u51fa\u73b0405 Method Not Allowed\u9519\u8bef<\/p>\n

\u6ce8\u610f\u4e8b\u9879<\/p>\n

– \u5728\u751f\u4ea7\u73af\u5883\u4e2d，\u4e0d\u8981\u4f7f\u7528 allow_origins=["*"] ，\u5e94\u8be5\u6307\u5b9a\u5177\u4f53\u5141\u8bb8\u7684\u57df\u540d – \u53ea\u5f00\u653e\u5fc5\u8981\u7684\u65b9\u6cd5\u548c\u5934\u4fe1\u606f，\u9075\u5faa\u6700\u5c0f\u6743\u9650\u539f\u5219<\/p>\n

\u6dfb\u52a0\u540e\u5e76\u4e14\u5bfc\u5165\u76f8\u5173\u5e93\u91cd\u542f\u670d\u52a1\u5668：<\/p>\n

from fastapi.middleware.cors import CORSMiddleware <\/p>\n

\"\"<\/p>\n

ok，\u518d\u6b21\u53d1\u9001post\u8bf7\u6c42：<\/p>\n

postman\u51fa\u73b0\u5982\u4e0b\u62a5\u9519：<\/p>\n

\"\"<\/p>\n

\u670d\u52a1\u5668\u540e\u53f0\u6ca1\u6709\u62a5\u9519<\/p>\n

\u5e94\u8be5\u662f\u683c\u5f0f\u6709\u95ee\u9898，\u91cd\u65b0\u6362\u683c\u5f0f，\u4e0d\u8981\u4e2d\u6587\u7684\u53cc\u5f15\u53f7：<\/p>\n

\"\"<\/p>\n

\u6210\u529f\u53d1\u9001：<\/p>\n

\"\"<\/p>\n

\u670d\u52a1\u5668\u540e\u53f0\u6ca1\u6709\u53d8\u5316：<\/p>\n

\u54b1\u4eec\u518d\u6b21\u56de\u5230\u67e5\u8be2\u9875\u9762\u770b\u6570\u636e\u662f\u5426\u63d0\u4ea4\u7ed9\u670d\u52a1\u5668<\/p>\n

\"\"<\/p>\n

\u5b8c\u7f8e，perfect！！<\/p>\n

6.\u5411\u670d\u52a1\u5668\u53d1\u9001\u4e00\u4e2a\u5220\u9664\u8bf7\u6c42delete<\/h3>\n

\u6765\u5230postman\u9875\u9762\u7f16\u8f91URL\u5730\u5740\u4e3a127.0.0.1:8001\/users\/1<\/p>\n

\"\"<\/p>\n

\u70b9\u51fb\u53d1\u9001<\/p>\n

postman\u9875\u9762：<\/p>\n

\"\"<\/p>\n

\u518d\u7528postman\u53d1\u9001\u67e5\u8be2\u8bf7\u6c42<\/p>\n

\"\"<\/p>\n

\u70b9\u51fb\u53d1\u9001<\/p>\n

\"\"<\/p>\n

OK，\u6570\u636e（id=1\u7684\u6570\u636e\u88ab\u5220\u9664）<\/p>\n

7.\u5411\u670d\u52a1\u5668\u53d1\u9001\u4e00\u4e2a\u4fee\u6539\u7684\u8bf7\u6c42\u65b9\u5f0f（put）<\/h3>\n

\u76f8\u5e94\u4ee3\u7801：<\/p>\n

\"\"<\/p>\n

\u539f\u59cb\u6570\u636e \"\"<\/p>\n

\u6211\u73b0\u5728\u8981\u628a\u5218\u5fb7\u534e\u7684\u90ae\u7bb1\u6539\u6210888<\/p>\n

\u6253\u5f00postman\u5c06URL\u4fee\u6539\u8fd8\u6709\u8bf7\u6c42\u4f53<\/p>\n

\"\"<\/p>\n

\u70b9\u51fb\u53d1\u9001\u6210\u529f<\/p>\n

\u518d\u7528postman\u67e5\u8be2\u53ef\u5f97<\/p>\n

\"\"<\/p>\n

\u6210\u529f，perfect！！<\/p>\n

8.\u54b1\u4eec\u8bbf\u95ee\u670d\u52a1\u5668\u7684\u5ba2\u6237\u7aef\u6709\u51e0\u4e2a？<\/h3>\n

\u4e24\u4e2a：<\/p>\n

\u6211\u4eec\u6d4f\u89c8\u5668\u548cpostman\u8fd9\u4e24\u4e2a\u5ba2\u6237\u7aef<\/p>\n

\u4f5c\u8005\u63d0\u95ee：<\/span>\u8fd8\u6709\u5417，\u8fd8\u6709\u5176\u4ed6\u7684\u65b9\u5f0f\u8bbf\u95ee\u6211\u7684\u670d\u52a1\u5668\u5417<\/p>\n

\u6211\u7684\u670d\u52a1\u5668\u662f\u53ef\u4ee5\u5206\u8fa8\u662f\u4ec0\u4e48\u5ba2\u6237\u7aef\u53d1\u7684\u8bf7\u6c42：\u5728\u8bf7\u6c42\u6295\u5934\u4e2d\u6709\u4e00\u53c2\u6570：User-Agent：\u6211\u662f\u8c01<\/p>\n

\"\"<\/p>\n

\u5982\u679c\u4f60\u7528\u722c\u866b，\u4f60\u80fd\u5728User-Agent\u8fd9\u4e2a\u5730\u65b9\u76f4\u63a5\u8bf4\u6211\u662f\u6252\u624b\u5417，\u6240\u4ee5\u722c\u866b\u9700\u8981\u4f2a\u88c5\u6210\u6d4f\u89c8\u5668\u5bf9\u670d\u52a1\u5668\u53d1\u8d77\u8bf7\u6c42\u83b7\u5f97\u81ea\u5df1\u60f3\u8981\u7684\u8d44\u6e90\u3002<\/p>\n

curl：\u53ef\u4ee5\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42（\u64cd\u4f5c\u7cfb\u7edf\u81ea\u5e26\u7684）<\/p>\n

\"\"<\/p>\n

\u4f5c\u8005\u63d0\u95ee：<\/span>curl\u662f\u5426\u7ec4\u5305\u5411\u670d\u52a1\u5668\u53d1\u5305\u3002<\/p>\n

\u5411\u7ec8\u7aef\u8f93\u5165：<\/p>\n

url -i http:\/\/127.0.0.1:8000\/users <\/p>\n

\"\"<\/p>\n

\u8fd4\u56de\u4e86\u4e00\u4e2a\u5b8c\u6574\u7684\u54cd\u5e94\u547d\u4ee4：\u54cd\u5e94\u4f53+\u54cd\u5e94\u5934+\u72b6\u6001\u884c<\/p>\n

\u6709\u70b9\u610f\u601d！<\/p>\n

\u5728\u7ec8\u7aef\u7528curl\u9700\u8981\u4f7f\u7528\u5b8c\u6574\u7684\u8bf7\u6c42\u5305，\u8be6\u60c5\u8bf7\u4e0a\u7f51\u76f4\u63a5\u641c；<\/p>\n

9.API\u6587\u6863<\/h3>\n

\u5bf9\u4e8e\u524d\u540e\u7aef\u5206\u79bb：\u9700\u8981\u7528API\u5f00\u53d1\u6587\u6863\u8fdb\u884c\u524d\u540e\u7aef\u6570\u636e\u4ea4\u6d41\u3002<\/p>\n

\u4e4b\u524d\u624b\u5199，\u73b0\u5728FastAPI\u63d0\u4f9bAPI\u5f00\u53d1\u6587\u6863.<\/p>\n

\"\"<\/p>\n

\u8bbf\u95ee：<\/p>\n

\"\"<\/p>\n

\u00a0 \u00a0\u7f51\u5740：http:\/\/127.0.0.1:8000\/docs<\/span>http:\/\/127.0.0.1:8000\/docs<\/span><\/span><\/p>\n

\"\"<\/p>\n

\u7b80\u5355FastAPI\u793a\u4f8b – ReDoc<\/span>http:\/\/127.0.0.1:8000\/redoc<\/span><\/span>\"\"<\/p>\n

\u53ef\u4ee5\u76f4\u63a5\u5728\u7f51\u7ad9\u4e0a\u8fdb\u884c\u6570\u636e\u8bf7\u6c42，\u4ea4\u4e92\u5f0f\u7684，\u5c31\u53ef\u4ee5\u4e0d\u7528postman\u548ccurl\u3002\u975e\u5e38\u725b\u903c\u3002<\/p>\n

\u4e24\u4e2a\u90fd\u53ef\u4ee5\u76f4\u63a5\u7528，\u4e0d\u662f\u6240\u6709\u7684\u90fd\u6709，\u8fd9\u5c31\u662fFastAPI\u76ee\u524d\u8fd9\u4e48\u53d7\u6b22\u8fce\u7684\u539f\u56e0\u3002<\/p>\n

\u4e03\u3001\u9762\u8bd5\u4e60\u9898<\/h2>\n

\n

\u4e00\u3001\u9009\u62e9\u9898<\/span><\/p>\n

1. \u5728Python\u4e2d，\u54ea\u4e2a\u5e93\u7528\u4e8e\u6784\u5efaAPI\u63a5\u53e3？<\/p>\n

\u00a0\u00a0\u00a0\u7b54\u6848：D. \u4ee5\u4e0a\u90fd\u662f<\/p>\n

2. \u4ee5\u4e0b\u54ea\u4e2aHTTP\u65b9\u6cd5\u7528\u4e8e\u83b7\u53d6\u8d44\u6e90？<\/p>\n

\u00a0\u00a0\u00a0\u7b54\u6848：A. GET<\/p>\n

3. \u5728FastAPI\u4e2d，\u5982\u4f55\u5b9a\u4e49\u4e00\u4e2aGET\u8bf7\u6c42\u7684\u8def\u7531？<\/p>\n

\u00a0\u00a0\u00a0\u7b54\u6848：D. @app.get("\/path")<\/p>\n

4. \u5728FastAPI\u4e2d，\u5982\u4f55\u83b7\u53d6\u8bf7\u6c42\u7684JSON\u6570\u636e？<\/p>\n

\u00a0\u00a0\u00a0\u7b54\u6848：D. request.json()<\/p>\n

5. \u4ee5\u4e0b\u54ea\u4e2a\u72b6\u6001\u7801\u8868\u793a\u8bf7\u6c42\u6210\u529f？<\/p>\n

\u00a0\u00a0\u00a0\u7b54\u6848：A. 200<\/p>\n

\u4e8c\u3001\u5224\u65ad\u9898<\/p>\n

1. FastAPI\u662f\u4e00\u4e2a\u7528\u4e8e\u6784\u5efaAPI\u63a5\u53e3\u7684Python\u6846\u67b6\u3002（\u5bf9\/\u9519）<\/p>\n

\u00a0\u00a0\u00a0\u7b54\u6848：\u5bf9<\/p>\n

2. \u5728FastAPI\u4e2d，\u8def\u7531\u51fd\u6570\u7684\u8fd4\u56de\u503c\u4f1a\u81ea\u52a8\u8f6c\u6362\u4e3aJSON\u683c\u5f0f\u3002（\u5bf9\/\u9519）<\/p>\n

\u00a0\u00a0\u00a0\u7b54\u6848：\u5bf9<\/p>\n

3. FastAPI\u652f\u6301\u81ea\u52a8\u751f\u6210OpenAPI\u6587\u6863\u3002（\u5bf9\/\u9519）<\/p>\n

\u00a0\u00a0\u00a0\u7b54\u6848：\u5bf9<\/p>\n

4. \u5728FastAPI\u4e2d，@app.post("\/path")\u7528\u4e8e\u5b9a\u4e49\u4e00\u4e2aPOST\u8bf7\u6c42\u7684\u8def\u7531\u3002（\u5bf9\/\u9519）<\/p>\n

\u00a0\u00a0\u00a0\u7b54\u6848：\u9519，\u5e94\u4e3a@app.post("\/path")\u800c\u4e0d\u662f@app.post("\/path", methods=["POST"])<\/p>\n

5. FastAPI\u4e0d\u652f\u6301\u5f02\u6b65\u7f16\u7a0b\u3002（\u5bf9\/\u9519）<\/p>\n

\u00a0\u00a0\u00a0\u7b54\u6848：\u9519<\/p>\n

\u4e09\u3001\u7b80\u7b54\u9898<\/span><\/p>\n

1. \u7b80\u8ff0FastAPI\u7684\u4f18\u52bf\u548c\u7279\u70b9\u3002<\/p>\n

\u00a0\u00a0\u00a0– \u57fa\u4e8e\u6807\u51c6Python\u7c7b\u578b\u63d0\u793a\u3002<\/p>\n

\u00a0\u00a0\u00a0– \u652f\u6301\u5f02\u6b65\u8bf7\u6c42\u5904\u7406\u3002<\/p>\n

\u00a0\u00a0\u00a0– \u81ea\u52a8\u9a8c\u8bc1\u548c\u6587\u6863（OpenAPI\u548cJSON Schema）\u3002<\/p>\n

\u00a0\u00a0\u00a0– \u57fa\u4e8eStarlette\u548cPydantic\u3002<\/p>\n

\u00a0\u00a0\u00a0– \u6027\u80fd\u4f18\u5f02，\u4e0eNodeJS\u548cGo\u76f8\u5f53\u3002<\/p>\n

\u00a0\u00a0\u00a0– \u7b80\u5355\u3001\u5feb\u901f\u3001\u5b89\u5168\u3002<\/p>\n

2. \u5728FastAPI\u4e2d，\u5982\u4f55\u5b9a\u4e49\u8bf7\u6c42\u4f53\u7684\u6a21\u578b？<\/p>\n

\u00a0\u00a0\u00a0– \u4f7f\u7528Pydantic\u6a21\u578b\u5b9a\u4e49\u8bf7\u6c42\u4f53\u7684\u7ed3\u6784，\u5e76\u4f7f\u7528`Body`\u53c2\u6570\u4ece\u8bf7\u6c42\u4e2d\u63d0\u53d6\u6570\u636e\u3002<\/p>\n

\u00a0\u00a0\u00a0\u793a\u4f8b\u4ee3\u7801： \u00a0\u00a0<\/p>\n

\u00a0from pydantic import BaseModel<\/p>\n

\u00a0\u00a0\u00a0from fastapi import FastAPI, HTTPException<\/p>\n

\u00a0\u00a0\u00a0app = FastAPI()<\/p>\n

\u00a0\u00a0\u00a0class Item(BaseModel):<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0name: str<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0description: str = None<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0price: float<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0tax: float = None<\/p>\n

\u00a0\u00a0\u00a0@app.post("\/items\/")<\/p>\n

\u00a0\u00a0\u00a0async def create_item(item: Item):<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return item <\/p>\n

3. \u5982\u4f55\u5728FastAPI\u4e2d\u5904\u7406\u67e5\u8be2\u53c2\u6570\u548c\u8def\u5f84\u53c2\u6570？<\/p>\n

\u00a0\u00a0\u00a0– \u4f7f\u7528\u51fd\u6570\u53c2\u6570\u548c\u7c7b\u578b\u6ce8\u89e3\u6765\u5b9a\u4e49\u8def\u5f84\u53c2\u6570\u548c\u67e5\u8be2\u53c2\u6570\u3002<\/p>\n

\u00a0\u00a0\u00a0\u793a\u4f8b\u4ee3\u7801：\u00a0<\/p>\n

@app.get("\/items\/{item_id}")<\/p>\n

\u00a0\u00a0\u00a0async def read_item(item_id: int, q: str = None):<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return {"item_id": item_id, "q": q} <\/p>\n

\n

4. \u5982\u4f55\u5728FastAPI\u4e2d\u8fdb\u884c\u8bf7\u6c42\u6570\u636e\u7684\u9a8c\u8bc1？<\/p>\n

\u00a0\u00a0\u00a0– \u901a\u8fc7Pydantic\u6a21\u578b\u81ea\u52a8\u9a8c\u8bc1\u8bf7\u6c42\u6570\u636e，\u4efb\u4f55\u4e0d\u7b26\u5408\u6a21\u578b\u7684\u6570\u636e\u90fd\u4f1a\u8fd4\u56de\u9519\u8bef\u3002<\/p>\n

\u00a0\u00a0\u00a0\u793a\u4f8b\u4ee3\u7801：<\/p>\n

\u00a0\u00a0from pydantic import BaseModel, ValidationError<\/p>\n

\u00a0\u00a0\u00a0class Item(BaseModel):<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0name: str<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0price: float<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0is_offer: bool = None<\/p>\n

\u00a0\u00a0\u00a0try:<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0item = Item(**data)<\/p>\n

\u00a0\u00a0\u00a0except ValidationError as e:<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0raise HTTPException(status_code=422, detail=e.errors()) <\/p>\n

5. \u7b80\u8ff0FastAPI\u7684\u4f9d\u8d56\u6ce8\u5165\u673a\u5236\u3002<\/p>\n

\u00a0\u00a0\u00a0– FastAPI\u5141\u8bb8\u4f7f\u7528\u4f9d\u8d56\u6ce8\u5165\u6765\u5904\u7406\u8bf7\u6c42\u524d\u548c\u8bf7\u6c42\u540e\u7684\u903b\u8f91，\u5982\u8ba4\u8bc1\u3001\u6570\u636e\u5e93\u4f1a\u8bdd\u7b49\u3002<\/p>\n

\u00a0\u00a0\u00a0– \u901a\u8fc7\u5b9a\u4e49\u4f9d\u8d56\u51fd\u6570\u5e76\u5728\u8def\u7531\u51fd\u6570\u4e2d\u4f7f\u7528，\u53ef\u4ee5\u91cd\u7528\u4ee3\u7801\u5e76\u4fdd\u6301\u8def\u7531\u51fd\u6570\u7684\u7b80\u6d01\u3002<\/p>\n

\u00a0\u00a0\u00a0– \u4f9d\u8d56\u53ef\u4ee5\u88ab\u7f13\u5b58，\u901a\u8fc7\u6dfb\u52a0`Depends`\u6765\u5b9e\u73b0\u3002<\/p>\n

\u00a0\u00a0\u00a0\u793a\u4f8b\u4ee3\u7801：<\/p>\n

\u00a0\u00a0\u00a0from fastapi import Depends, HTTPException<\/p>\n

\u00a0\u00a0\u00a0def get_db():<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0db = SessionLocal()<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0try:<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0yield db<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0finally:<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0db.close()<\/p>\n

\u00a0\u00a0\u00a0@app.get("\/items\/")<\/p>\n

\u00a0\u00a0\u00a0async def read_items(db: Session = Depends(get_db)):<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0items = db.query(Item).all()<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return items<\/p>\n","protected":false},"excerpt":{"rendered":"

API（Application Programming Interface）\u662f\u4e0d\u540c\u8f6f\u4ef6\u7cfb\u7edf\u4e4b\u95f4\u7684\u901a\u4fe1\u63a5\u53e3，\u662f\u73b0\u4ee3\u8f6f\u4ef6\u67b6\u6784\u7684\u6838\u5fc3\u7ec4\u4ef6\u3002\u672c\u6587\u5c06\u4ece \u57fa\u7840\u6982\u5ff5\u5230\u5b9e\u9645\u5b9e\u73b0 ，\u8be6\u7ec6\u8bb2\u89e3API\u5f00\u53d1\u7684\u5168\u6d41\u7a0b\u3002
\n\u4e00\u3001API\u57fa\u7840\u6982\u5ff5 1. \u4ec0\u4e48\u662fAPI？ API\u662f\u4e00\u7ec4\u5b9a\u4e49\u7684\u89c4\u5219\u548c\u534f\u8bae，\u5141\u8bb8\u4e00\u4e2a\u8f6f\u4ef6\u7cfb\u7edf\u4e0e\u53e6\u4e00\u4e2a\u8f6f\u4ef6\u7cfb\u7edf\u4ea4\u4e92，\u800c\u65e0\u9700\u4e86\u89e3\u5176\u5185\u90e8\u5b9e\u73b0\u7ec6\u8282\u3002
\n\u4f8b\u5982： – \u5929\u6c14\u5e94\u7528\u901a\u8fc7\u5929\u6c14AP<\/p>\n","protected":false},"author":2,"featured_media":61210,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[72,151,2314,81,205,677,191],"topic":[],"class_list":["post-61230","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-fastapi","tag-http","tag-postman","tag-python","tag-tcp-ip","tag-677","tag-191"],"yoast_head":"\n\u57fa\u4e8eFastAPI\u7684API\u5f00\u53d1\uff08\u722c\u866b\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u670d\u52a1\u5668\u63a5\u53e3\u642d\u5efa\uff09\uff1a\u4ece\u8bbe\u8ba1\u5230\u90e8\u7f72\u8be6\u89e3+\u9762\u8bd5\u4e60\u9898 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/61230.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u57fa\u4e8eFastAPI\u7684API\u5f00\u53d1\uff08\u722c\u866b\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u670d\u52a1\u5668\u63a5\u53e3\u642d\u5efa\uff09\uff1a\u4ece\u8bbe\u8ba1\u5230\u90e8\u7f72\u8be6\u89e3+\u9762\u8bd5\u4e60\u9898 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"API（Application Programming Interface）\u662f\u4e0d\u540c\u8f6f\u4ef6\u7cfb\u7edf\u4e4b\u95f4\u7684\u901a\u4fe1\u63a5\u53e3，\u662f\u73b0\u4ee3\u8f6f\u4ef6\u67b6\u6784\u7684\u6838\u5fc3\u7ec4\u4ef6\u3002\u672c\u6587\u5c06\u4ece \u57fa\u7840\u6982\u5ff5\u5230\u5b9e\u9645\u5b9e\u73b0 ，\u8be6\u7ec6\u8bb2\u89e3API\u5f00\u53d1\u7684\u5168\u6d41\u7a0b\u3002 \u4e00\u3001API\u57fa\u7840\u6982\u5ff5 1. \u4ec0\u4e48\u662fAPI？ API\u662f\u4e00\u7ec4\u5b9a\u4e49\u7684\u89c4\u5219\u548c\u534f\u8bae，\u5141\u8bb8\u4e00\u4e2a\u8f6f\u4ef6\u7cfb\u7edf\u4e0e\u53e6\u4e00\u4e2a\u8f6f\u4ef6\u7cfb\u7edf\u4ea4\u4e92，\u800c\u65e0\u9700\u4e86\u89e3\u5176\u5185\u90e8\u5b9e\u73b0\u7ec6\u8282\u3002 \u4f8b\u5982： - \u5929\u6c14\u5e94\u7528\u901a\u8fc7\u5929\u6c14AP\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/61230.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-17T00:34:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260117003444-696ad924bd917.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/61230.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/61230.html\",\"name\":\"\u57fa\u4e8eFastAPI\u7684API\u5f00\u53d1\uff08\u722c\u866b\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u670d\u52a1\u5668\u63a5\u53e3\u642d\u5efa\uff09\uff1a\u4ece\u8bbe\u8ba1\u5230\u90e8\u7f72\u8be6\u89e3+\u9762\u8bd5\u4e60\u9898 - 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