{"id":37310,"date":"2025-05-15T12:31:09","date_gmt":"2025-05-15T04:31:09","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/37310.html"},"modified":"2025-05-15T12:31:09","modified_gmt":"2025-05-15T04:31:09","slug":"fastapi-%e7%bb%93%e5%90%88-jwt","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/37310.html","title":{"rendered":"FastAPI \u7ed3\u5408 JWT"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>FastAPI \u7ed3\u5408 JWT<\/li>\n<li>\u6b65\u9aa4<\/li>\n<li>\u5b89\u88c5<\/li>\n<li>\u6b65\u9aa4<\/li>\n<li>\n<ul>\n<li>\u5bfc\u5165\u5fc5\u8981\u7684\u6a21\u5757<\/li>\n<li>\u8bbe\u7f6e\u914d\u7f6e\u548c\u521d\u59cb\u5316\u5e94\u7528<\/li>\n<li>\u521b\u5efa\u6570\u636e\u6a21\u578b<\/li>\n<li>\u5b9e\u73b0\u8f85\u52a9\u51fd\u6570<\/li>\n<li>\n<ul>\n<li>\u751f\u6210 JWT Token<\/li>\n<li>\u83b7\u53d6\u7528\u6237\u6570\u636e<\/li>\n<li>\u9a8c\u8bc1\u5bc6\u7801<\/li>\n<li>\u83b7\u53d6\u5f53\u524d\u7528\u6237<\/li>\n<\/ul>\n<\/li>\n<li>\u7528\u6237\u767b\u5f55\u83b7\u53d6 Token<\/li>\n<li>\u53d7\u4fdd\u62a4\u7684\u8def\u7531\u793a\u4f8b<\/li>\n<\/ul>\n<\/li>\n<li>\u6240\u6709\u4ee3\u7801<\/li>\n<li>\u6d4b\u8bd5<\/li>\n<li>\n<ul>\n<li>\u83b7\u53d6 Token<\/li>\n<li>\u8bbf\u95ee\u53d7\u4fdd\u62a4\u7684\u8def\u7531<\/li>\n<li>\n<ul>\n<li>token\u6b63\u786e<\/li>\n<li>token\u9519\u8bef<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u603b\u7ed3<\/li>\n<li>\u6ce8\u610f<\/li>\n<\/ul>\n<h2>FastAPI \u7ed3\u5408 JWT<\/h2>\n<p>JWT&#xff08;JSON Web Token&#xff09;\u662f\u4e00\u79cd\u57fa\u4e8e JSON \u7684\u5f00\u653e\u6807\u51c6&#xff08;RFC 7519&#xff09;&#xff0c;\u7528\u4e8e\u5728\u5404\u65b9\u4e4b\u95f4\u4f20\u9012\u5b89\u5168\u53ef\u9760\u7684\u4fe1\u606f\u3002JWT \u53ef\u4ee5\u7b7e\u540d&#xff08;\u4f7f\u7528 HMAC \u7b97\u6cd5\u6216 RSA \u7b49&#xff09;&#xff0c;\u4ece\u800c\u53ef\u4ee5\u9a8c\u8bc1\u5185\u5bb9\u662f\u5426\u88ab\u7be1\u6539\u3002JWT \u901a\u5e38\u7528\u4e8e\u8ba4\u8bc1\u548c\u6388\u6743\u6d41\u7a0b\u3002<\/p>\n<h2>\u6b65\u9aa4<\/h2>\n<p>\u5728 FastAPI \u4e2d&#xff0c;JWT \u4e3b\u8981\u7528\u4e8e\u4fdd\u62a4 API \u8def\u7531&#xff0c;\u4f7f\u5176\u53ea\u5141\u8bb8\u7ecf\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u7684\u7528\u6237\u8bbf\u95ee\u3002\u8ba4\u8bc1\u6d41\u7a0b\u5927\u81f4\u5982\u4e0b&#xff1a;<\/p>\n<li>**\u7528\u6237\u767b\u5f55&#xff1a;**\u7528\u6237\u901a\u8fc7\u63d0\u4ea4\u7528\u6237\u540d\u548c\u5bc6\u7801\u83b7\u53d6 JWT\u3002<\/li>\n<li>**\u83b7\u53d6 Token&#xff1a;**\u670d\u52a1\u5668\u9a8c\u8bc1\u7528\u6237\u51ed\u636e\u540e&#xff0c;\u751f\u6210\u5e76\u8fd4\u56de JWT \u7ed9\u7528\u6237\u3002<\/li>\n<li>**\u8bbf\u95ee\u53d7\u4fdd\u62a4\u7684\u8def\u7531&#xff1a;**\u7528\u6237\u5728\u8bbf\u95ee\u53d7\u4fdd\u62a4\u7684\u8def\u7531\u65f6&#xff0c;\u9700\u8981\u5728\u8bf7\u6c42\u5934\u4e2d\u643a\u5e26\u8be5 JWT\u3002<\/li>\n<li>**Token \u9a8c\u8bc1&#xff1a;**\u670d\u52a1\u5668\u9a8c\u8bc1 JWT \u7684\u5408\u6cd5\u6027\u548c\u6709\u6548\u6027&#xff0c;\u5141\u8bb8\u6216\u62d2\u7edd\u8bbf\u95ee\u53d7\u4fdd\u62a4\u8d44\u6e90\u3002<\/li>\n<h2>\u5b89\u88c5<\/h2>\n<p>pip install fastapi uvicorn pyjwt<\/p>\n<h2>\u6b65\u9aa4<\/h2>\n<h3>\u5bfc\u5165\u5fc5\u8981\u7684\u6a21\u5757<\/h3>\n<p><span class=\"token keyword\">from<\/span> fastapi <span class=\"token keyword\">import<\/span> FastAPI<span class=\"token punctuation\">,<\/span> Depends<span class=\"token punctuation\">,<\/span> HTTPException<span class=\"token punctuation\">,<\/span> status<br \/>\n<span class=\"token keyword\">from<\/span> fastapi<span class=\"token punctuation\">.<\/span>security <span class=\"token keyword\">import<\/span> OAuth2PasswordBearer<span class=\"token punctuation\">,<\/span> OAuth2PasswordRequestForm<br \/>\n<span class=\"token keyword\">from<\/span> pydantic <span class=\"token keyword\">import<\/span> BaseModel<br \/>\n<span class=\"token keyword\">from<\/span> datetime <span class=\"token keyword\">import<\/span> datetime<span class=\"token punctuation\">,<\/span> timedelta<span class=\"token punctuation\">,<\/span> timezone<br \/>\n<span class=\"token keyword\">import<\/span> jwt<\/p>\n<h3>\u8bbe\u7f6e\u914d\u7f6e\u548c\u521d\u59cb\u5316\u5e94\u7528<\/h3>\n<p>SECRET_KEY <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;your_secret_key&#034;<\/span>  <span class=\"token comment\"># \u7528\u4e8e\u7b7e\u540d JWT \u7684\u5bc6\u94a5<\/span><br \/>\nALGORITHM <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;HS256&#034;<\/span>             <span class=\"token comment\"># \u52a0\u5bc6\u7b97\u6cd5<\/span><br \/>\nACCESS_TOKEN_EXPIRE_MINUTES <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">30<\/span>  <span class=\"token comment\"># Token \u8fc7\u671f\u65f6\u95f4<\/span><\/p>\n<p>app <span class=\"token operator\">&#061;<\/span> FastAPI<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>oauth2_scheme <span class=\"token operator\">&#061;<\/span> OAuth2PasswordBearer<span class=\"token punctuation\">(<\/span>tokenUrl<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;token&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h3>\u521b\u5efa\u6570\u636e\u6a21\u578b<\/h3>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Token<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    access_token<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><br \/>\n    token_type<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TokenData<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    username<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">User<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    username<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><br \/>\n    email<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><br \/>\n    full_name<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><br \/>\n    disabled<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">bool<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">UserInDB<\/span><span class=\"token punctuation\">(<\/span>User<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    hashed_password<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><\/p>\n<h3>\u5b9e\u73b0\u8f85\u52a9\u51fd\u6570<\/h3>\n<h4>\u751f\u6210 JWT Token<\/h4>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">create_access_token<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">dict<\/span><span class=\"token punctuation\">,<\/span> expires_delta<span class=\"token punctuation\">:<\/span> timedelta <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    to_encode <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">.<\/span>copy<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> expires_delta<span class=\"token punctuation\">:<\/span><br \/>\n        expire <span class=\"token operator\">&#061;<\/span> datetime<span class=\"token punctuation\">.<\/span>now<span class=\"token punctuation\">(<\/span>timezone<span class=\"token punctuation\">.<\/span>utc<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> expires_delta<br \/>\n    <span class=\"token keyword\">else<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        expire <span class=\"token operator\">&#061;<\/span> datetime<span class=\"token punctuation\">.<\/span>now<span class=\"token punctuation\">(<\/span>timezone<span class=\"token punctuation\">.<\/span>utc<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> timedelta<span class=\"token punctuation\">(<\/span>minutes<span class=\"token operator\">&#061;<\/span><span class=\"token number\">15<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    to_encode<span class=\"token punctuation\">.<\/span>update<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;exp&#034;<\/span><span class=\"token punctuation\">:<\/span> expire<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    encoded_jwt <span class=\"token operator\">&#061;<\/span> jwt<span class=\"token punctuation\">.<\/span>encode<span class=\"token punctuation\">(<\/span>to_encode<span class=\"token punctuation\">,<\/span> SECRET_KEY<span class=\"token punctuation\">,<\/span> algorithm<span class=\"token operator\">&#061;<\/span>ALGORITHM<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> encoded_jwt<\/p>\n<h4>\u83b7\u53d6\u7528\u6237\u6570\u636e<\/h4>\n<p>fake_users_db <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token string\">&#034;testuser&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;username&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;testuser&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;full_name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;Test User&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;email&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;testuser&#064;example.com&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;hashed_password&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;fakehashedpassword&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;disabled&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token boolean\">False<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">get_user<\/span><span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">,<\/span> username<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> username <span class=\"token keyword\">in<\/span> db<span class=\"token punctuation\">:<\/span><br \/>\n        user_dict <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">[<\/span>username<span class=\"token punctuation\">]<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> UserInDB<span class=\"token punctuation\">(<\/span><span class=\"token operator\">**<\/span>user_dict<span class=\"token punctuation\">)<\/span><\/p>\n<h4>\u9a8c\u8bc1\u5bc6\u7801<\/h4>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">verify_password<\/span><span class=\"token punctuation\">(<\/span>plain_password<span class=\"token punctuation\">,<\/span> hashed_password<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> plain_password <span class=\"token operator\">&#061;&#061;<\/span> hashed_password<\/p>\n<h4>\u83b7\u53d6\u5f53\u524d\u7528\u6237<\/h4>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">get_current_user<\/span><span class=\"token punctuation\">(<\/span>token<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">&#061;<\/span> Depends<span class=\"token punctuation\">(<\/span>oauth2_scheme<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    credentials_exception <span class=\"token operator\">&#061;<\/span> HTTPException<span class=\"token punctuation\">(<\/span><br \/>\n        status_code<span class=\"token operator\">&#061;<\/span>status<span class=\"token punctuation\">.<\/span>HTTP_401_UNAUTHORIZED<span class=\"token punctuation\">,<\/span><br \/>\n        detail<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;Could not validate credentials&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        headers<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;WWW-Authenticate&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;Bearer&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        payload <span class=\"token operator\">&#061;<\/span> jwt<span class=\"token punctuation\">.<\/span>decode<span class=\"token punctuation\">(<\/span>token<span class=\"token punctuation\">,<\/span> SECRET_KEY<span class=\"token punctuation\">,<\/span> algorithms<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span>ALGORITHM<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        username<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">&#061;<\/span> payload<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;sub&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> username <span class=\"token keyword\">is<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> credentials_exception<br \/>\n        token_data <span class=\"token operator\">&#061;<\/span> TokenData<span class=\"token punctuation\">(<\/span>username<span class=\"token operator\">&#061;<\/span>username<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">except<\/span> jwt<span class=\"token punctuation\">.<\/span>PyJWTError<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">raise<\/span> credentials_exception<br \/>\n    user <span class=\"token operator\">&#061;<\/span> get_user<span class=\"token punctuation\">(<\/span>fake_users_db<span class=\"token punctuation\">,<\/span> username<span class=\"token operator\">&#061;<\/span>token_data<span class=\"token punctuation\">.<\/span>username<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> user <span class=\"token keyword\">is<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">raise<\/span> credentials_exception<br \/>\n    <span class=\"token keyword\">return<\/span> user<\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">get_current_active_user<\/span><span class=\"token punctuation\">(<\/span>current_user<span class=\"token punctuation\">:<\/span> User <span class=\"token operator\">&#061;<\/span> Depends<span class=\"token punctuation\">(<\/span>get_current_user<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> current_user<span class=\"token punctuation\">.<\/span>disabled<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">raise<\/span> HTTPException<span class=\"token punctuation\">(<\/span>status_code<span class=\"token operator\">&#061;<\/span><span class=\"token number\">400<\/span><span class=\"token punctuation\">,<\/span> detail<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;Inactive user&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> current_user<\/p>\n<h3>\u7528\u6237\u767b\u5f55\u83b7\u53d6 Token<\/h3>\n<p><span class=\"token decorator annotation punctuation\">&#064;app<span class=\"token punctuation\">.<\/span>post<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/token&#034;<\/span><span class=\"token punctuation\">,<\/span> response_model<span class=\"token operator\">&#061;<\/span>Token<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">login_for_access_token<\/span><span class=\"token punctuation\">(<\/span>form_data<span class=\"token punctuation\">:<\/span> OAuth2PasswordRequestForm <span class=\"token operator\">&#061;<\/span> Depends<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    user <span class=\"token operator\">&#061;<\/span> get_user<span class=\"token punctuation\">(<\/span>fake_users_db<span class=\"token punctuation\">,<\/span> form_data<span class=\"token punctuation\">.<\/span>username<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> user <span class=\"token keyword\">or<\/span> <span class=\"token keyword\">not<\/span> verify_password<span class=\"token punctuation\">(<\/span>form_data<span class=\"token punctuation\">.<\/span>password<span class=\"token punctuation\">,<\/span> user<span class=\"token punctuation\">.<\/span>hashed_password<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">raise<\/span> HTTPException<span class=\"token punctuation\">(<\/span><br \/>\n            status_code<span class=\"token operator\">&#061;<\/span>status<span class=\"token punctuation\">.<\/span>HTTP_401_UNAUTHORIZED<span class=\"token punctuation\">,<\/span><br \/>\n            detail<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;Incorrect username or password&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            headers<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;WWW-Authenticate&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;Bearer&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><br \/>\n    access_token_expires <span class=\"token operator\">&#061;<\/span> timedelta<span class=\"token punctuation\">(<\/span>minutes<span class=\"token operator\">&#061;<\/span>ACCESS_TOKEN_EXPIRE_MINUTES<span class=\"token punctuation\">)<\/span><br \/>\n    access_token <span class=\"token operator\">&#061;<\/span> create_access_token<span class=\"token punctuation\">(<\/span><br \/>\n        data<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;sub&#034;<\/span><span class=\"token punctuation\">:<\/span> user<span class=\"token punctuation\">.<\/span>username<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> expires_delta<span class=\"token operator\">&#061;<\/span>access_token_expires<br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;access_token&#034;<\/span><span class=\"token punctuation\">:<\/span> access_token<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;token_type&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;bearer&#034;<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u53d7\u4fdd\u62a4\u7684\u8def\u7531\u793a\u4f8b<\/h3>\n<p><span class=\"token decorator annotation punctuation\">&#064;app<span class=\"token punctuation\">.<\/span>get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/users\/me\/&#034;<\/span><span class=\"token punctuation\">,<\/span> response_model<span class=\"token operator\">&#061;<\/span>User<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">read_users_me<\/span><span class=\"token punctuation\">(<\/span>current_user<span class=\"token punctuation\">:<\/span> User <span class=\"token operator\">&#061;<\/span> Depends<span class=\"token punctuation\">(<\/span>get_current_active_user<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> current_user<\/p>\n<h2>\u6240\u6709\u4ee3\u7801<\/h2>\n<p><span class=\"token keyword\">from<\/span> fastapi <span class=\"token keyword\">import<\/span> FastAPI<span class=\"token punctuation\">,<\/span> Depends<span class=\"token punctuation\">,<\/span> HTTPException<span class=\"token punctuation\">,<\/span> status<br \/>\n<span class=\"token keyword\">from<\/span> fastapi<span class=\"token punctuation\">.<\/span>security <span class=\"token keyword\">import<\/span> OAuth2PasswordBearer<span class=\"token punctuation\">,<\/span> OAuth2PasswordRequestForm<br \/>\n<span class=\"token keyword\">from<\/span> pydantic <span class=\"token keyword\">import<\/span> BaseModel<br \/>\n<span class=\"token keyword\">from<\/span> datetime <span class=\"token keyword\">import<\/span> datetime<span class=\"token punctuation\">,<\/span> timedelta<span class=\"token punctuation\">,<\/span> timezone<br \/>\n<span class=\"token keyword\">import<\/span> uvicorn<br \/>\n<span class=\"token keyword\">import<\/span> jwt<br \/>\n<span class=\"token keyword\">import<\/span> os<\/p>\n<p><span class=\"token comment\"># JWT \u76f8\u5173\u914d\u7f6e<\/span><br \/>\nSECRET_KEY <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;123456789ashdgjha.slakdv.laksd*as-d\/sd3&#034;<\/span>  <span class=\"token comment\"># \u7528\u4e8e\u7b7e\u540d JWT \u7684\u5bc6\u94a5&#xff08;\u9700\u8981\u59a5\u5584\u4fdd\u7ba1&#xff0c;\u5b9e\u9645\u5e94\u7528\u4e2d\u5e94\u5b58\u50a8\u5728\u73af\u5883\u53d8\u91cf\u6216\u914d\u7f6e\u6587\u4ef6\u4e2d&#xff09;<\/span><br \/>\nALGORITHM <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;HS256&#034;<\/span>  <span class=\"token comment\"># \u4f7f\u7528\u7684\u52a0\u5bc6\u7b97\u6cd5<\/span><br \/>\nACCESS_TOKEN_EXPIRE_MINUTES <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">30<\/span>  <span class=\"token comment\"># Token \u7684\u6709\u6548\u65f6\u95f4&#xff0c;\u4ee5\u5206\u949f\u4e3a\u5355\u4f4d<\/span><\/p>\n<p>app <span class=\"token operator\">&#061;<\/span> FastAPI<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u521b\u5efa FastAPI \u5e94\u7528\u5b9e\u4f8b<\/span><\/p>\n<p><span class=\"token comment\"># OAuth2PasswordBearer \u5b9e\u4f8b&#xff0c;\u7528\u4e8e\u4f9d\u8d56\u9879<\/span><br \/>\noauth2_scheme <span class=\"token operator\">&#061;<\/span> OAuth2PasswordBearer<span class=\"token punctuation\">(<\/span>tokenUrl<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;token&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># \u6a21\u62df\u7684\u7528\u6237\u6570\u636e\u5e93&#xff0c;\u901a\u5e38\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u5e94\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u7528\u6237\u4fe1\u606f<\/span><br \/>\nfake_users_db <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token string\">&#034;testuser&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;username&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;testuser&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;full_name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;Test User&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;email&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;testuser&#064;example.com&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;hashed_password&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;fakehashedpassword&#034;<\/span><span class=\"token punctuation\">,<\/span>  <span class=\"token comment\"># \u5728\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;\u5b58\u50a8\u7ecf\u8fc7\u54c8\u5e0c\u5904\u7406\u7684\u5bc6\u7801<\/span><br \/>\n        <span class=\"token string\">&#034;disabled&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token boolean\">False<\/span><span class=\"token punctuation\">,<\/span>  <span class=\"token comment\"># \u7528\u6237\u662f\u5426\u88ab\u7981\u7528<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\"># Pydantic \u6a21\u578b&#xff0c;\u7528\u4e8e\u5b9a\u4e49\u8bf7\u6c42\u548c\u54cd\u5e94\u7684\u6570\u636e\u7ed3\u6784<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Token<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    access_token<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span>  <span class=\"token comment\"># Token \u5b57\u7b26\u4e32<\/span><br \/>\n    token_type<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span>  <span class=\"token comment\"># Token \u7c7b\u578b&#xff08;\u4e00\u822c\u4e3a &#034;bearer&#034;&#xff09;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TokenData<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    username<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span>  <span class=\"token comment\"># \u4ece Token \u4e2d\u63d0\u53d6\u7684\u7528\u6237\u540d<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">User<\/span><span class=\"token punctuation\">(<\/span>BaseModel<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    username<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span>  <span class=\"token comment\"># \u7528\u6237\u540d<\/span><br \/>\n    email<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span>  <span class=\"token comment\"># \u90ae\u7bb1\u5730\u5740&#xff0c;\u53ef\u9009<\/span><br \/>\n    full_name<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span>  <span class=\"token comment\"># \u7528\u6237\u5168\u540d&#xff0c;\u53ef\u9009<\/span><br \/>\n    disabled<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">bool<\/span> <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span>  <span class=\"token comment\"># \u7528\u6237\u662f\u5426\u88ab\u7981\u7528&#xff0c;\u53ef\u9009<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">UserInDB<\/span><span class=\"token punctuation\">(<\/span>User<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    hashed_password<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span>  <span class=\"token comment\"># \u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u7684\u54c8\u5e0c\u5bc6\u7801<\/span><\/p>\n<p><span class=\"token comment\"># \u751f\u6210 JWT Token \u7684\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">create_access_token<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">dict<\/span><span class=\"token punctuation\">,<\/span> expires_delta<span class=\"token punctuation\">:<\/span> timedelta <span class=\"token operator\">|<\/span> <span class=\"token boolean\">None<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;<br \/>\n    \u751f\u6210 JWT Token\u3002<\/p>\n<p>    \u53c2\u6570&#xff1a;<br \/>\n    &#8211; data (dict): \u8981\u7f16\u7801\u5230 JWT \u4e2d\u7684\u6570\u636e\u3002<br \/>\n    &#8211; expires_delta (timedelta, \u53ef\u9009): Token \u7684\u8fc7\u671f\u65f6\u95f4\u3002<\/p>\n<p>    \u8fd4\u56de&#xff1a;<br \/>\n    &#8211; str: \u7f16\u7801\u540e\u7684 JWT \u5b57\u7b26\u4e32\u3002<br \/>\n    &#034;&#034;&#034;<\/span><br \/>\n    to_encode <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">.<\/span>copy<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u521b\u5efa\u526f\u672c&#xff0c;\u4ee5\u907f\u514d\u4fee\u6539\u539f\u59cb\u6570\u636e<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> expires_delta<span class=\"token punctuation\">:<\/span><br \/>\n        expire <span class=\"token operator\">&#061;<\/span> datetime<span class=\"token punctuation\">.<\/span>now<span class=\"token punctuation\">(<\/span>timezone<span class=\"token punctuation\">.<\/span>utc<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> expires_delta<br \/>\n    <span class=\"token keyword\">else<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        expire <span class=\"token operator\">&#061;<\/span> datetime<span class=\"token punctuation\">.<\/span>now<span class=\"token punctuation\">(<\/span>timezone<span class=\"token punctuation\">.<\/span>utc<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> timedelta<span class=\"token punctuation\">(<\/span>minutes<span class=\"token operator\">&#061;<\/span><span class=\"token number\">15<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    to_encode<span class=\"token punctuation\">.<\/span>update<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;exp&#034;<\/span><span class=\"token punctuation\">:<\/span> expire<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u6dfb\u52a0\u8fc7\u671f\u65f6\u95f4\u5230 JWT \u6570\u636e\u4e2d<\/span><br \/>\n    encoded_jwt <span class=\"token operator\">&#061;<\/span> jwt<span class=\"token punctuation\">.<\/span>encode<span class=\"token punctuation\">(<\/span>to_encode<span class=\"token punctuation\">,<\/span> SECRET_KEY<span class=\"token punctuation\">,<\/span> algorithm<span class=\"token operator\">&#061;<\/span>ALGORITHM<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u751f\u6210 JWT<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> encoded_jwt<\/p>\n<p><span class=\"token comment\"># \u4ece\u5047\u6570\u636e\u5e93\u83b7\u53d6\u7528\u6237\u4fe1\u606f<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">get_user<\/span><span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">,<\/span> username<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;<br \/>\n    \u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u7528\u6237\u4fe1\u606f\u3002<\/p>\n<p>    \u53c2\u6570&#xff1a;<br \/>\n    &#8211; db (dict): \u7528\u6237\u6570\u636e\u5e93&#xff08;\u5728\u672c\u4f8b\u4e2d\u4e3a\u5047\u6570\u636e&#xff09;\u3002<br \/>\n    &#8211; username (str): \u7528\u6237\u540d\u3002<\/p>\n<p>    \u8fd4\u56de&#xff1a;<br \/>\n    &#8211; UserInDB | None: \u8fd4\u56de\u5339\u914d\u7684\u7528\u6237\u4fe1\u606f&#xff0c;\u5982\u679c\u4e0d\u5b58\u5728\u5219\u8fd4\u56de None\u3002<br \/>\n    &#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> username <span class=\"token keyword\">in<\/span> db<span class=\"token punctuation\">:<\/span><br \/>\n        user_dict <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">[<\/span>username<span class=\"token punctuation\">]<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> UserInDB<span class=\"token punctuation\">(<\/span><span class=\"token operator\">**<\/span>user_dict<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># \u9a8c\u8bc1\u7528\u6237\u5bc6\u7801<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">verify_password<\/span><span class=\"token punctuation\">(<\/span>plain_password<span class=\"token punctuation\">,<\/span> hashed_password<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;<br \/>\n    \u9a8c\u8bc1\u7528\u6237\u5bc6\u7801\u3002<\/p>\n<p>    \u53c2\u6570&#xff1a;<br \/>\n    &#8211; plain_password (str): \u7528\u6237\u8f93\u5165\u7684\u660e\u6587\u5bc6\u7801\u3002<br \/>\n    &#8211; hashed_password (str): \u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u7684\u54c8\u5e0c\u5bc6\u7801\u3002<\/p>\n<p>    \u8fd4\u56de&#xff1a;<br \/>\n    &#8211; bool: \u5bc6\u7801\u5339\u914d\u8fd4\u56de True&#xff0c;\u5426\u5219\u8fd4\u56de False\u3002<br \/>\n    &#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> plain_password <span class=\"token operator\">&#061;&#061;<\/span> hashed_password  <span class=\"token comment\"># \u5728\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;\u8fd9\u91cc\u5e94\u8be5\u4f7f\u7528\u54c8\u5e0c\u51fd\u6570\u8fdb\u884c\u6bd4\u8f83<\/span><\/p>\n<p><span class=\"token comment\"># \u9a8c\u8bc1 Token \u5e76\u83b7\u53d6\u5f53\u524d\u7528\u6237<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">get_current_user<\/span><span class=\"token punctuation\">(<\/span>token<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">&#061;<\/span> Depends<span class=\"token punctuation\">(<\/span>oauth2_scheme<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;<br \/>\n    \u4ece JWT Token \u4e2d\u63d0\u53d6\u7528\u6237\u4fe1\u606f&#xff0c;\u5e76\u9a8c\u8bc1 Token \u7684\u5408\u6cd5\u6027\u3002<\/p>\n<p>    \u53c2\u6570&#xff1a;<br \/>\n    &#8211; token (str): JWT Token\u3002<\/p>\n<p>    \u8fd4\u56de&#xff1a;<br \/>\n    &#8211; User: \u8fd4\u56de\u5f53\u524d\u7528\u6237\u4fe1\u606f\u3002<\/p>\n<p>    \u629b\u51fa&#xff1a;<br \/>\n    &#8211; HTTPException: \u5f53 Token \u65e0\u6548\u6216\u7528\u6237\u4e0d\u5b58\u5728\u65f6\u629b\u51fa 401 \u9519\u8bef\u3002<br \/>\n    &#034;&#034;&#034;<\/span><br \/>\n    credentials_exception <span class=\"token operator\">&#061;<\/span> HTTPException<span class=\"token punctuation\">(<\/span><br \/>\n        status_code<span class=\"token operator\">&#061;<\/span>status<span class=\"token punctuation\">.<\/span>HTTP_401_UNAUTHORIZED<span class=\"token punctuation\">,<\/span><br \/>\n        detail<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;Could not validate credentials&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        headers<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;WWW-Authenticate&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;Bearer&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        payload <span class=\"token operator\">&#061;<\/span> jwt<span class=\"token punctuation\">.<\/span>decode<span class=\"token punctuation\">(<\/span>token<span class=\"token punctuation\">,<\/span> SECRET_KEY<span class=\"token punctuation\">,<\/span> algorithms<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span>ALGORITHM<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u89e3\u7801 JWT<\/span><br \/>\n        username<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">&#061;<\/span> payload<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;sub&#034;<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u83b7\u53d6 JWT \u4e2d\u7684\u7528\u6237\u540d<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> username <span class=\"token keyword\">is<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> credentials_exception<br \/>\n        token_data <span class=\"token operator\">&#061;<\/span> TokenData<span class=\"token punctuation\">(<\/span>username<span class=\"token operator\">&#061;<\/span>username<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">except<\/span> jwt<span class=\"token punctuation\">.<\/span>PyJWTError<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">raise<\/span> credentials_exception<br \/>\n    user <span class=\"token operator\">&#061;<\/span> get_user<span class=\"token punctuation\">(<\/span>fake_users_db<span class=\"token punctuation\">,<\/span> username<span class=\"token operator\">&#061;<\/span>token_data<span class=\"token punctuation\">.<\/span>username<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u83b7\u53d6\u7528\u6237\u4fe1\u606f<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> user <span class=\"token keyword\">is<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">raise<\/span> credentials_exception<br \/>\n    <span class=\"token keyword\">return<\/span> user<\/p>\n<p><span class=\"token comment\"># \u9a8c\u8bc1\u7528\u6237\u662f\u5426\u88ab\u7981\u7528<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">get_current_active_user<\/span><span class=\"token punctuation\">(<\/span>current_user<span class=\"token punctuation\">:<\/span> User <span class=\"token operator\">&#061;<\/span> Depends<span class=\"token punctuation\">(<\/span>get_current_user<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;<br \/>\n    \u9a8c\u8bc1\u5f53\u524d\u7528\u6237\u662f\u5426\u88ab\u7981\u7528\u3002<\/p>\n<p>    \u53c2\u6570&#xff1a;<br \/>\n    &#8211; current_user (User): \u5f53\u524d\u7528\u6237\u4fe1\u606f\u3002<\/p>\n<p>    \u8fd4\u56de&#xff1a;<br \/>\n    &#8211; User: \u5982\u679c\u7528\u6237\u672a\u88ab\u7981\u7528&#xff0c;\u8fd4\u56de\u7528\u6237\u4fe1\u606f\u3002<\/p>\n<p>    \u629b\u51fa&#xff1a;<br \/>\n    &#8211; HTTPException: \u5f53\u7528\u6237\u88ab\u7981\u7528\u65f6\u629b\u51fa 400 \u9519\u8bef\u3002<br \/>\n    &#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> current_user<span class=\"token punctuation\">.<\/span>disabled<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">raise<\/span> HTTPException<span class=\"token punctuation\">(<\/span>status_code<span class=\"token operator\">&#061;<\/span><span class=\"token number\">400<\/span><span class=\"token punctuation\">,<\/span> detail<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;Inactive user&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> current_user<\/p>\n<p><span class=\"token comment\"># \u7528\u6237\u767b\u5f55\u83b7\u53d6 Token<\/span><br \/>\n<span class=\"token decorator annotation punctuation\">&#064;app<span class=\"token punctuation\">.<\/span>post<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/token&#034;<\/span><span class=\"token punctuation\">,<\/span> response_model<span class=\"token operator\">&#061;<\/span>Token<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">login_for_access_token<\/span><span class=\"token punctuation\">(<\/span>form_data<span class=\"token punctuation\">:<\/span> OAuth2PasswordRequestForm <span class=\"token operator\">&#061;<\/span> Depends<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;<br \/>\n    \u7528\u6237\u767b\u5f55\u63a5\u53e3&#xff0c;\u7528\u4e8e\u83b7\u53d6 JWT Token\u3002<\/p>\n<p>    \u53c2\u6570&#xff1a;<br \/>\n    &#8211; form_data (OAuth2PasswordRequestForm): \u5305\u542b\u7528\u6237\u540d\u548c\u5bc6\u7801\u7684\u8868\u5355\u6570\u636e\u3002<\/p>\n<p>    \u8fd4\u56de&#xff1a;<br \/>\n    &#8211; dict: \u5305\u542b access_token \u548c token_type \u7684\u54cd\u5e94\u6570\u636e\u3002<\/p>\n<p>    \u629b\u51fa&#xff1a;<br \/>\n    &#8211; HTTPException: \u5f53\u7528\u6237\u540d\u6216\u5bc6\u7801\u9519\u8bef\u65f6\u629b\u51fa 401 \u9519\u8bef\u3002<br \/>\n    &#034;&#034;&#034;<\/span><br \/>\n    user <span class=\"token operator\">&#061;<\/span> get_user<span class=\"token punctuation\">(<\/span>fake_users_db<span class=\"token punctuation\">,<\/span> form_data<span class=\"token punctuation\">.<\/span>username<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> user <span class=\"token keyword\">or<\/span> <span class=\"token keyword\">not<\/span> verify_password<span class=\"token punctuation\">(<\/span>form_data<span class=\"token punctuation\">.<\/span>password<span class=\"token punctuation\">,<\/span> user<span class=\"token punctuation\">.<\/span>hashed_password<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">raise<\/span> HTTPException<span class=\"token punctuation\">(<\/span><br \/>\n            status_code<span class=\"token operator\">&#061;<\/span>status<span class=\"token punctuation\">.<\/span>HTTP_401_UNAUTHORIZED<span class=\"token punctuation\">,<\/span><br \/>\n            detail<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;Incorrect username or password&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            headers<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;WWW-Authenticate&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;Bearer&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><br \/>\n    access_token_expires <span class=\"token operator\">&#061;<\/span> timedelta<span class=\"token punctuation\">(<\/span>minutes<span class=\"token operator\">&#061;<\/span>ACCESS_TOKEN_EXPIRE_MINUTES<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u8bbe\u7f6e Token \u8fc7\u671f\u65f6\u95f4<\/span><br \/>\n    access_token <span class=\"token operator\">&#061;<\/span> create_access_token<span class=\"token punctuation\">(<\/span><br \/>\n        data<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;sub&#034;<\/span><span class=\"token punctuation\">:<\/span> user<span class=\"token punctuation\">.<\/span>username<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> expires_delta<span class=\"token operator\">&#061;<\/span>access_token_expires<br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;access_token&#034;<\/span><span class=\"token punctuation\">:<\/span> access_token<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;token_type&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;bearer&#034;<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\"># \u53d7\u4fdd\u62a4\u7684\u8def\u7531\u793a\u4f8b<\/span><br \/>\n<span class=\"token decorator annotation punctuation\">&#064;app<span class=\"token punctuation\">.<\/span>get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\/users\/me\/&#034;<\/span><span class=\"token punctuation\">,<\/span> response_model<span class=\"token operator\">&#061;<\/span>User<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">def<\/span> <span class=\"token function\">read_users_me<\/span><span class=\"token punctuation\">(<\/span>current_user<span class=\"token punctuation\">:<\/span> User <span class=\"token operator\">&#061;<\/span> Depends<span class=\"token punctuation\">(<\/span>get_current_active_user<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;<br \/>\n    \u83b7\u53d6\u5f53\u524d\u7528\u6237\u4fe1\u606f\u7684\u53d7\u4fdd\u62a4\u8def\u7531\u3002<\/p>\n<p>    \u53c2\u6570&#xff1a;<br \/>\n    &#8211; current_user (User): \u5f53\u524d\u767b\u5f55\u7684\u7528\u6237\u4fe1\u606f&#xff08;\u901a\u8fc7 JWT \u9a8c\u8bc1&#xff09;\u3002<\/p>\n<p>    \u8fd4\u56de&#xff1a;<br \/>\n    &#8211; User: \u8fd4\u56de\u5f53\u524d\u7528\u6237\u7684\u4fe1\u606f\u3002<br \/>\n    &#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> current_user<\/p>\n<p><span class=\"token comment\"># \u8fd0\u884c\u5e94\u7528<\/span><br \/>\n<span class=\"token keyword\">if<\/span> __name__ <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;__main__&#034;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    uvicorn<span class=\"token punctuation\">.<\/span>run<span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>os<span class=\"token punctuation\">.<\/span>path<span class=\"token punctuation\">.<\/span>basename<span class=\"token punctuation\">(<\/span>__file__<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>split<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;.&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:app&#034;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n        host<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;127.0.0.1&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        port<span class=\"token operator\">&#061;<\/span><span class=\"token number\">8000<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token builtin\">reload<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">,<\/span>  <span class=\"token comment\"># \u542f\u7528\u81ea\u52a8\u91cd\u8f7d<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><\/p>\n<h2>\u6d4b\u8bd5<\/h2>\n<h3>\u83b7\u53d6 Token<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250515043107-68256e0b9490f.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u8bbf\u95ee\u53d7\u4fdd\u62a4\u7684\u8def\u7531<\/h3>\n<h4>token\u6b63\u786e<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250515043107-68256e0be0c34.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>token\u9519\u8bef<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250515043108-68256e0c430db.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>JWT&#xff08;JSON Web Token&#xff09;\u662f\u4e00\u79cd\u7528\u4e8e\u5b89\u5168\u5730\u5728\u5404\u65b9\u4e4b\u95f4\u4f20\u9012\u4fe1\u606f\u7684\u5f00\u653e\u6807\u51c6&#xff0c;\u901a\u5e38\u7528\u4e8e\u7528\u6237\u8ba4\u8bc1\u548c\u6388\u6743\u3002\u5b83\u5c06\u7528\u6237\u4fe1\u606f\u7f16\u7801\u4e3a\u4e00\u4e2a\u7b7e\u540d\u7684\u4ee4\u724c&#xff0c;\u5ba2\u6237\u7aef\u53ef\u4ee5\u4f7f\u7528\u8be5\u4ee4\u724c\u8bbf\u95ee\u53d7\u4fdd\u62a4\u7684\u8d44\u6e90\u3002<\/p>\n<p>\u5728 FastAPI \u4e2d&#xff0c;JWT \u7528\u4e8e\u4fdd\u62a4 API \u8def\u7531\u3002\u7528\u6237\u901a\u8fc7\u63d0\u4ea4\u7528\u6237\u540d\u548c\u5bc6\u7801\u83b7\u53d6 JWT&#xff0c;\u5ba2\u6237\u7aef\u5728\u540e\u7eed\u8bf7\u6c42\u4e2d\u4f7f\u7528\u8be5\u4ee4\u724c\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u3002\u670d\u52a1\u5668\u9a8c\u8bc1\u4ee4\u724c\u7684\u5408\u6cd5\u6027\u540e&#xff0c;\u5141\u8bb8\u7528\u6237\u8bbf\u95ee\u53d7\u4fdd\u62a4\u7684\u8d44\u6e90\u3002<\/p>\n<p>\u5b9e\u73b0 JWT \u8ba4\u8bc1\u7684\u6b65\u9aa4\u5305\u62ec\u5b89\u88c5\u5fc5\u8981\u7684\u4f9d\u8d56\u9879\u3001\u914d\u7f6e JWT \u8bbe\u7f6e&#xff08;\u5982\u5bc6\u94a5\u548c\u7b97\u6cd5&#xff09;\u3001\u5b9a\u4e49\u6570\u636e\u6a21\u578b\u3001\u5b9e\u73b0\u8f85\u52a9\u51fd\u6570&#xff08;\u5982\u751f\u6210\u548c\u9a8c\u8bc1 JWT \u7684\u51fd\u6570&#xff09;&#xff0c;\u5e76\u8bbe\u7f6e\u53d7\u4fdd\u62a4\u7684 API \u8def\u7531\u3002<\/p>\n<ul>\n<li>JWT \u914d\u7f6e&#xff1a;\u5305\u62ec\u5bc6\u94a5&#xff08;SECRET_KEY&#xff09;\u548c\u52a0\u5bc6\u7b97\u6cd5&#xff08;ALGORITHM&#xff09;&#xff0c;\u7528\u4e8e\u751f\u6210\u548c\u9a8c\u8bc1\u4ee4\u724c\u3002<\/li>\n<li>\u8f85\u52a9\u51fd\u6570&#xff1a;\u5982\u751f\u6210 JWT\u3001\u9a8c\u8bc1\u5bc6\u7801\u3001\u83b7\u53d6\u7528\u6237\u4fe1\u606f\u7b49&#xff0c;\u7528\u4e8e\u5904\u7406\u8ba4\u8bc1\u903b\u8f91\u3002<\/li>\n<li>API \u8def\u7531&#xff1a;\u5305\u542b\u767b\u5f55\u63a5\u53e3&#xff0c;\u7528\u4e8e\u751f\u6210\u4ee4\u724c&#xff0c;\u4ee5\u53ca\u53d7\u4fdd\u62a4\u7684\u8def\u7531&#xff0c;\u53ea\u5141\u8bb8\u643a\u5e26\u6709\u6548 JWT \u7684\u8bf7\u6c42\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<p>\u4f7f\u7528 Postman \u6216\u5176\u4ed6\u5de5\u5177\u53ef\u4ee5\u6d4b\u8bd5 JWT \u7684\u751f\u6210\u548c\u9a8c\u8bc1\u8fc7\u7a0b&#xff0c;\u786e\u4fdd\u53ea\u6709\u7ecf\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u7684\u7528\u6237\u624d\u80fd\u8bbf\u95ee\u53d7\u4fdd\u62a4\u7684 API 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