{"id":54954,"date":"2025-08-13T14:00:20","date_gmt":"2025-08-13T06:00:20","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/54954.html"},"modified":"2025-08-13T14:00:20","modified_gmt":"2025-08-13T06:00:20","slug":"pythonflask%e5%90%8e%e7%ab%af%e5%bc%80%e5%8f%91%e8%bf%9b%e9%98%b6%e7%b3%bb%e5%88%97-flask%e5%90%8e%e7%ab%aform%e6%a8%a1%e5%9e%8b%e6%89%a7%e8%a1%8c%e6%95%b0%e6%8d%ae%e5%ba%93%e7%9a%84%e5%a2%9e","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/54954.html","title":{"rendered":"python+flask\u540e\u7aef\u5f00\u53d1~\u8fdb\u9636\u7cfb\u5217 | Flask\u540e\u7aefORM\u6a21\u578b\u6267\u884c\u6570\u636e\u5e93\u7684\u589e\u3001\u5220\u3001\u6539\u3001\u67e5(CRUD)\u64cd\u4f5c"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813060007-689c29e78c88a.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u7b80\u4ecb&#xff1a;Python &#043; Flask \u7ec4\u5408\u51ed\u501f\u5176\u7b80\u6d01\u9ad8\u6548\u3001\u7075\u6d3b\u6613\u7528\u7684\u7279\u70b9&#xff0c;\u6df1\u53d7\u5e7f\u5927\u5f00\u53d1\u8005\u7684\u9752\u7750\u3002\u800c\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04&#xff08;ORM&#xff09; \u6280\u672f\u66f4\u662f\u4e3a\u6570\u636e\u5e93\u64cd\u4f5c\u5e26\u6765\u4e86\u9769\u547d\u6027\u7684\u53d8\u9769\u3002ORM \u6a21\u578b\u4e0d\u4ec5\u7b80\u5316\u4e86\u6570\u636e\u5e93\u64cd\u4f5c&#xff0c;\u8fd8\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u901a\u8fc7\u5c06\u6570\u636e\u5e93\u8868\u6620\u5c04\u4e3a Python \u7c7b&#xff0c;\u5f00\u53d1\u8005\u53ef\u4ee5\u4f7f\u7528\u9762\u5411\u5bf9\u8c61\u7684\u65b9\u5f0f\u64cd\u4f5c\u6570\u636e\u5e93&#xff0c;\u800c\u65e0\u9700\u76f4\u63a5\u7f16\u5199 SQL \u8bed\u53e5\u3002\u672c\u6587\u5c06\u63a2\u8ba8 Flask \u540e\u7aef\u5f00\u53d1\u4e2d ORM \u6a21\u578b\u7684\u9ad8\u7ea7\u5e94\u7528&#xff0c;\u5e2e\u52a9\u4f60\u638c\u63e1\u5982\u4f55\u901a\u8fc7 ORM \u6a21\u578b\u9ad8\u6548\u5730\u6267\u884c\u6570\u636e\u5e93\u7684\u589e\u3001\u5220\u3001\u6539\u3001\u67e5&#xff08;CRUD&#xff09;\u64cd\u4f5c\u3002<\/p>\n<p>\u76ee\u5f55&#xff1a;<\/p>\n<p>\u4e00\u3001\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04 ORM \u6a21\u578b\u7684\u77e5\u8bc6\u56de\u987e 1.1 ORM \u6a21\u578b\u7684\u57fa\u672c\u6982\u5ff5 1.2 ORM \u6a21\u578b\u7684\u5b9e\u4f8b\u5feb\u901f\u521b\u5efa \u4e8c\u3001ORM \u6a21\u578b\u5bf9\u6570\u636e\u5e93\u6267\u884c\u589e\u5220\u6539\u67e5 2.1 \u589e\u52a0\u6570\u636e 2.2 \u67e5\u8be2\u6570\u636e 2.3 \u4fee\u6539\u6570\u636e 2.4 \u4fee\u6539\u6570\u636e \u4e09\u3001\u7ed3\u675f\u8bed<\/p>\n<hr \/>\n<p>&#x1f680; \u8bfb\u5b8c\u672c\u6587&#xff0c;\u4f60\u5c06\u89e3\u9501\u4ee5\u4e0b\u8d85\u5b9e\u7528\u6280\u80fd\u548c\u77e5\u8bc6\u50a8\u5907&#xff1a;<\/p>\n<ul>\n<li>\u6df1\u5165\u7406\u89e3 ORM \u6a21\u578b\u7684\u6838\u5fc3\u6982\u5ff5&#xff1a;\u638c\u63e1 ORM \u6a21\u578b\u7684\u5b9a\u4e49\u3001\u539f\u7406\u4ee5\u53ca\u5b83\u5982\u4f55\u5c06\u9762\u5411\u5bf9\u8c61\u7684\u7f16\u7a0b\u601d\u60f3\u4e0e\u5173\u7cfb\u578b\u6570\u636e\u5e93\u5b8c\u7f8e\u7ed3\u5408\u3002<\/li>\n<li>\u638c\u63e1 Flask \u540e\u7aef ORM \u6a21\u578b\u7684 CRUD \u64cd\u4f5c&#xff1a;\u5b66\u4f1a\u5982\u4f55\u4f7f\u7528 Flask \u7684 ORM \u6a21\u578b\u8fdb\u884c\u6570\u636e\u5e93\u7684\u589e\u3001\u5220\u3001\u6539\u3001\u67e5\u64cd\u4f5c&#xff0c;\u5e76\u7406\u89e3\u6bcf\u79cd\u64cd\u4f5c\u7684\u5b9e\u73b0\u539f\u7406\u548c\u6700\u4f73\u5b9e\u8df5\u3002<\/li>\n<li>\u63d0\u9ad8\u4ee3\u7801\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027&#xff1a;\u901a\u8fc7\u5b9e\u9645\u4ee3\u7801\u793a\u4f8b&#xff0c;\u5b66\u4e60\u5982\u4f55\u7f16\u5199\u9ad8\u6548\u3001\u53ef\u7ef4\u62a4\u4e14\u6613\u4e8e\u6269\u5c55\u7684 ORM \u6a21\u578b\u4ee3\u7801&#xff0c;\u63d0\u5347\u4f60\u7684\u540e\u7aef\u5f00\u53d1\u80fd\u529b\u3002<\/li>\n<\/ul>\n<h2>\u4e00\u3001\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04 ORM \u6a21\u578b\u7684\u77e5\u8bc6\u56de\u987e<\/h2>\n<h3>1.1 ORM \u6a21\u578b\u7684\u57fa\u672c\u6982\u5ff5<\/h3>\n<p>\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04&#xff08;ORM&#xff09; \u662f\u4e00\u79cd\u7f16\u7a0b\u6280\u672f&#xff0c;\u7528\u4e8e\u5b9e\u73b0\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u8bed\u8a00\u4e2d\u7684\u5bf9\u8c61\u4e0e\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u8868\u4e4b\u95f4\u7684\u6620\u5c04\u3002\u5728 Python \u4e2d&#xff0c;\u6700\u5e38\u7528\u7684 ORM \u6846\u67b6\u662f SQLAlchemy\u3002<\/p>\n<p>ORM \u6a21\u578b\u7684\u6838\u5fc3\u601d\u60f3\u662f\u5c06\u6570\u636e\u5e93\u4e2d\u7684\u8868\u6620\u5c04\u4e3a Python \u4e2d\u7684\u7c7b&#xff0c;\u8868\u4e2d\u7684\u6bcf\u4e00\u884c\u6570\u636e\u6620\u5c04\u4e3a\u7c7b\u7684\u4e00\u4e2a\u5b9e\u4f8b\u5bf9\u8c61\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f&#xff0c;\u5f00\u53d1\u8005\u53ef\u4ee5\u4f7f\u7528\u9762\u5411\u5bf9\u8c61\u7684\u65b9\u5f0f\u64cd\u4f5c\u6570\u636e\u5e93&#xff0c;\u800c\u65e0\u9700\u76f4\u63a5\u7f16\u5199 SQL \u8bed\u53e5\u3002<\/p>\n<h3>1.2 ORM \u6a21\u578b\u7684\u5b9e\u4f8b\u5feb\u901f\u521b\u5efa<\/h3>\n<ul>\n<li>\u91c7\u7528\u4ee5\u4e0b\u4ee3\u7801\u5feb\u901f\u521b\u5efa\u4e00\u4e2aORM\u5bf9\u8c61\u5b9e\u4f8b&#xff1a;&#xff08;app.py&#xff09;<\/li>\n<\/ul>\n<p><span class=\"token comment\"># -*- coding: utf-8 -*-<\/span><br \/>\n<span class=\"token keyword\">from<\/span> flask <span class=\"token keyword\">import<\/span> Flask<span class=\"token punctuation\">,<\/span> render_template<br \/>\n<span class=\"token keyword\">from<\/span> flask_sqlalchemy <span class=\"token keyword\">import<\/span> SQLAlchemy<\/p>\n<p>app <span class=\"token operator\">&#061;<\/span> Flask<span class=\"token punctuation\">(<\/span>__name__<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># MySQL \u6240\u5728\u7684\u4e3b\u673a\u540d<\/span><br \/>\nHOSTNAME <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;127.0.0.1&#034;<\/span><br \/>\n<span class=\"token comment\"># MYSQL \u76d1\u542c\u7684\u7aef\u53e3\u53f7&#xff0c;\u9ed8\u8ba43306<\/span><br \/>\nPORT <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3306<\/span><br \/>\n<span class=\"token comment\"># \u8fde\u63a5MySQL\u7684\u7528\u6237\u540d&#xff0c;\u8bfb\u8005\u7528\u81ea\u5df1\u8bbe\u7f6e\u7684<\/span><br \/>\nUSERNAME <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;root&#034;<\/span><br \/>\n<span class=\"token comment\"># \u8fde\u63a5 MYSQL\u7684\u5bc6\u7801&#xff0c;\u8bfb\u8005\u7528\u81ea\u5df1\u7684<\/span><br \/>\nPASSWORD <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;******&#034;<\/span><br \/>\n<span class=\"token comment\"># MYSQL\u4e0a\u521b\u5efa\u7684\u6570\u636e\u5e93\u540d\u79f0<\/span><br \/>\nDATABASE <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;backdb_test&#034;<\/span><\/p>\n<p>app<span class=\"token punctuation\">.<\/span>config<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;SQLALCHEMY_DATABASE_URI&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;mysql&#043;pymysql:\/\/<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>USERNAME<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>PASSWORD<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#064;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>HOSTNAME<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>PORT<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\/<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>DATABASE<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">?charsetut-8mb4&#034;<\/span><\/span><br \/>\n<span class=\"token comment\"># \u5728app.config\u4e2d\u8bbe\u7f6e\u8fde\u63a5\u6570\u636e\u5e93\u7684\u57fa\u672c\u4fe1\u606f<\/span><br \/>\n<span class=\"token comment\"># \u7136\u540e\u4f7f\u7528SQLAlchemy(app)\u521b\u5efa\u4e00\u4e2adb\u5bf9\u8c61<\/span><br \/>\n<span class=\"token comment\"># SQLAlchemy\u4f1a\u81ea\u52a8\u8bfb\u53d6app.config\u4e2d\u7684\u914d\u7f6e\u4fe1\u606f<\/span><br \/>\ndb <span class=\"token operator\">&#061;<\/span> SQLAlchemy<span class=\"token punctuation\">(<\/span>app<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">User<\/span><span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>Model<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token comment\"># \u521b\u5efa\u4e00\u4e2a\u8868&#xff0c;\u540d\u4e3auser&#xff0c;\u53ef\u81ea\u5b9a\u4e49<\/span><br \/>\n    __tablename__ <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;user&#034;<\/span><br \/>\n    <span class=\"token comment\"># \u6dfb\u52a0\u4e3b\u952e\u5b57\u6bb5&#xff0c;\u5e76\u5b9a\u4e49\u4e86\u7c7b\u578b\u3001\u4e3b\u952e\u3001\u81ea\u589e<\/span><br \/>\n    <span class=\"token builtin\">id<\/span> <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>Column<span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>Integer<span class=\"token punctuation\">,<\/span> primary_key <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">,<\/span> autoincrement <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># \u6dfb\u52a0\u5b57\u6bb5&#xff0c;\u5e76\u6307\u5b9a\u5b57\u7b26\u957f\u5ea6&#xff0c;\u975e\u7a7a<\/span><br \/>\n    username <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>Column<span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>String<span class=\"token punctuation\">(<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> nullable <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    password <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>Column<span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>String<span class=\"token punctuation\">(<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> nullable <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">with<\/span> app<span class=\"token punctuation\">.<\/span>app_context<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    db<span class=\"token punctuation\">.<\/span>create_all<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff1a;<\/p>\n<ul>\n<li>User \u7c7b\u7ee7\u627f\u81ea db.Model&#xff0c;\u8868\u793a\u5b83\u662f\u4e00\u4e2a ORM \u6a21\u578b\u3002<\/li>\n<li>id\u3001username \u548c password \u662f\u7c7b\u7684\u5c5e\u6027&#xff0c;\u5206\u522b\u5bf9\u5e94\u6570\u636e\u5e93\u8868\u4e2d\u7684\u5217\u3002<\/li>\n<li>db.Column \u7528\u4e8e\u5b9a\u4e49\u5217\u7684\u7c7b\u578b\u548c\u7ea6\u675f\u3002<\/li>\n<li>db.create_all()\u7528\u4e8e\u5c06Python\u7c7b\u4e2d\u7684\u5bf9\u8c61\u521b\u5efa\u6267\u884c\u5728\u6570\u636e\u5e93\u4e2d\u3002<\/li>\n<\/ul>\n<p>\u6b64\u65f6&#xff0c;\u5df2\u7ecf\u5728\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3auser\u7684\u8868&#xff0c;\u5e76\u4e14\u8868\u4e2d\u5305\u542b\u4e09\u4e2a\u5b57\u6bb5&#xff0c;id&#xff0c;username\u548cpassword\u3002\u5982\u679c\u60f3\u8981\u77e5\u9053\u66f4\u591a\u5173\u4e8e\u521b\u5efaORM\u5bf9\u8c61\u7684\u77e5\u8bc6&#xff0c;\u53ef\u4ee5\u53c2\u8003\u6211\u7684\u524d\u4e00\u7bc7\u535a\u5ba2\u6587\u7ae0&#xff1a;python&#043;flask\u540e\u7aef\u5f00\u53d1~\u8fdb\u9636\u7cfb\u5217 | \u5bf9\u8c61\u5173\u7cfb\u6620\u5c04ORN\u6a21\u578b\u4e0e\u6570\u636e\u5e93\u2192\u8868\u4e4b\u95f4\u7684\u6620\u5c04\u3002<\/p>\n<h2>\u4e8c\u3001ORM \u6a21\u578b\u5bf9\u6570\u636e\u5e93\u6267\u884c\u589e\u5220\u6539\u67e5<\/h2>\n<h3>2.1 \u589e\u52a0\u6570\u636e<\/h3>\n<ul>\n<li>\u901a\u8fc7 ORM \u6a21\u578b\u5411\u6570\u636e\u5e93\u4e2d\u6dfb\u52a0\u6570\u636e\u975e\u5e38\u7b80\u5355\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b&#xff1a;<\/li>\n<\/ul>\n<p><span class=\"token comment\"># \u589e\u52a0\u64cd\u4f5c<\/span><br \/>\n<span class=\"token decorator annotation punctuation\">&#064;app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/user\/add&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">add_user<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token comment\"># 1.\u521b\u5efaORM\u5bf9\u8c61<\/span><br \/>\n    user <span class=\"token operator\">&#061;<\/span> User<span class=\"token punctuation\">(<\/span>username <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">,<\/span> password <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;111111&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># 2.\u5c06ORM\u5bf9\u8c61\u6dfb\u52a0\u5230db.session\u4e2d<\/span><br \/>\n    db<span class=\"token punctuation\">.<\/span>session<span class=\"token punctuation\">.<\/span>add<span class=\"token punctuation\">(<\/span>user<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># 3.\u5c06session\u4e2d\u7684\u6539\u53d8\u540c\u6b65\u5230\u6570\u636e\u5e93\u4e2d<\/span><br \/>\n    db<span class=\"token punctuation\">.<\/span>session<span class=\"token punctuation\">.<\/span>commit<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;\u7528\u6237\u521b\u5efa\u6210\u529f&#034;<\/span><\/p>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff1a;<\/p>\n<ul>\n<li>user \u662f\u4e00\u4e2a User \u7c7b\u7684\u5b9e\u4f8b\u5bf9\u8c61\u3002<\/li>\n<li>db.session.add() \u65b9\u6cd5\u5c06\u5b9e\u4f8b\u5bf9\u8c61\u6dfb\u52a0\u5230\u5f53\u524d\u4f1a\u8bdd\u4e2d\u3002<\/li>\n<li>db.session.commit() \u65b9\u6cd5\u63d0\u4ea4\u4f1a\u8bdd&#xff0c;\u5c06\u6570\u636e\u4fdd\u5b58\u5230\u6570\u636e\u5e93\u4e2d\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u8bbf\u95eehttp:\/\/127.0.0.1:5000\/user\/add\u5f97\u5230\u6e32\u67d3\u7ed3\u679c\u5982\u4e0b&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813060008-689c29e88a5b9.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813060010-689c29ea75525.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>2.2 \u67e5\u8be2\u6570\u636e<\/h3>\n<p>ORM \u6a21\u578b\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u67e5\u8be2\u529f\u80fd&#xff0c;\u53ef\u4ee5\u65b9\u4fbf\u5730\u67e5\u8be2\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u67e5\u627e\u64cd\u4f5c<\/span><br \/>\n<span class=\"token decorator annotation punctuation\">&#064;app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/user\/query&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">query_user<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token comment\"># 1.get\u67e5\u627e&#xff0c;\u6839\u636e\u4e3b\u952e\u67e5\u627e<\/span><br \/>\n    user <span class=\"token operator\">&#061;<\/span> User<span class=\"token punctuation\">.<\/span>query<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u67e5\u627e\u6210\u529f&#xff0c;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>user<span class=\"token punctuation\">.<\/span><span class=\"token builtin\">id<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>user<span class=\"token punctuation\">.<\/span>password<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># 2.filter_by\u67e5\u627e<\/span><br \/>\n    <span class=\"token comment\"># users\u662f\u4e00\u4e2aQuery\u5bf9\u8c61&#xff0c;\u5177\u5907\u5217\u8868\u529f\u80fd&#xff0c;\u4e0d\u662f\u4e00\u4e2auser\u5bf9\u8c61<\/span><br \/>\n    users <span class=\"token operator\">&#061;<\/span> User<span class=\"token punctuation\">.<\/span>query<span class=\"token punctuation\">.<\/span>filter_by<span class=\"token punctuation\">(<\/span>username<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> user <span class=\"token keyword\">in<\/span> users<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>user<span class=\"token punctuation\">.<\/span>username<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">type<\/span><span class=\"token punctuation\">(<\/span>users<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;\u7528\u6237\u67e5\u627e\u6210\u529f&#034;<\/span><\/p>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff1a;<\/p>\n<ul>\n<li>User.query.get(1)\u8fd4\u56de\u4e00\u4e2a\u67e5\u8be2\u5bf9\u8c61&#xff0c;\u5177\u6709\u5c5e\u6027\u3002\u6211\u901a\u8fc7\u8bbf\u95ee\u62ff\u5230\u5bf9\u8c61\u4e2d\u7684\u5177\u4f53\u503c&#xff0c;\u5e76\u5728Flask\u540e\u7aef\u8f93\u51fa\u3002<\/li>\n<li>User.query.filter_by(username&#061;&#034;\u5f20\u4e09&#034;)\u65b9\u6cd5\u7528\u4e8e\u6dfb\u52a0\u67e5\u8be2\u6761\u4ef6&#xff0c;\u8fd4\u56de\u4e00\u4e2aQuery\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n<p>\u6e32\u67d3\u7ed3\u679c\u5982\u4e0b&#xff1a;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813060012-689c29ec22b61.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>2.3 \u4fee\u6539\u6570\u636e<\/h3>\n<p>\u901a\u8fc7 ORM \u6a21\u578b\u4fee\u6539\u5e76\u66f4\u65b0\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u4e5f\u975e\u5e38\u7b80\u5355\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u4fee\u6539\u64cd\u4f5c<\/span><br \/>\n<span class=\"token decorator annotation punctuation\">&#064;app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/user\/update&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">update_user<\/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> User<span class=\"token punctuation\">.<\/span>query<span class=\"token punctuation\">.<\/span>filter_by<span class=\"token punctuation\">(<\/span>username<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>first<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    user<span class=\"token punctuation\">.<\/span>password <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;222222&#034;<\/span><br \/>\n    db<span class=\"token punctuation\">.<\/span>session<span class=\"token punctuation\">.<\/span>commit<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;\u7528\u6237\u4fee\u6539\u6210\u529f&#034;<\/span><\/p>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\u901a\u8fc7 User.query.filter_by() \u67e5\u8be2\u5230\u8981\u66f4\u65b0\u7684\u7528\u6237\u5bf9\u8c61\u3002<\/li>\n<li>\u4fee\u6539\u7528\u6237\u5bf9\u8c61\u7684\u5c5e\u6027\u503c&#xff0c;\u4e5f\u5c31\u662f\u76f4\u63a5\u5b9a\u4e49&#xff0c;\u540e\u7eed\u63d0\u4ea4\u540e\u8fdb\u884c\u8986\u76d6\u3002<\/li>\n<li>\u8c03\u7528 db.session.commit() \u65b9\u6cd5\u63d0\u4ea4\u4f1a\u8bdd&#xff0c;\u4fdd\u5b58\u66f4\u65b0\u3002<\/li>\n<\/ul>\n<p>\u6e32\u67d3\u7ed3\u679c\u5982\u4e0b&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813060015-689c29efe0b0c.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>2.4 \u5220\u9664\u6570\u636e<\/h3>\n<p>\u901a\u8fc7 ORM \u6a21\u578b\u5220\u9664\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u4e5f\u975e\u5e38\u7b80\u5355\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u5220\u9664\u64cd\u4f5c<\/span><br \/>\n<span class=\"token decorator annotation punctuation\">&#064;app<span class=\"token punctuation\">.<\/span>route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/user\/delete&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">delete_user<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token comment\"># \u67e5\u627e\u5230<\/span><br \/>\n    user <span class=\"token operator\">&#061;<\/span> User<span class=\"token punctuation\">.<\/span>query<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token number\">111111<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># \u4ecedb.session\u4e2d\u5220\u9664<\/span><br \/>\n    db<span class=\"token punctuation\">.<\/span>session<span class=\"token punctuation\">.<\/span>delete<span class=\"token punctuation\">(<\/span>user<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># \u5c06sb.session\u4e2d\u7684\u4fee\u6539\u540c\u6b65\u5230\u6570\u636e\u5e93\u4e2d<\/span><br \/>\n    db<span class=\"token punctuation\">.<\/span>session<span class=\"token punctuation\">.<\/span>commit<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;\u7528\u6237\u5220\u9664\u6210\u529f&#034;<\/span><\/p>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\u901a\u8fc7User.query.get(111111)\u67e5\u8be2\u5230\u8981\u5220\u9664\u7684\u7528\u6237\u5bf9\u8c61\u3002<\/li>\n<li>\u8c03\u7528 db.session.delete() \u65b9\u6cd5\u5c06\u7528\u6237\u5bf9\u8c61\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\u3002<\/li>\n<li>\u8c03\u7528 db.session.commit() \u65b9\u6cd5\u63d0\u4ea4\u4f1a\u8bdd&#xff0c;\u4fdd\u5b58\u5220\u9664\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p>\u6e32\u67d3\u7ed3\u679c\u5982\u4e0b&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813060017-689c29f194c7e.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h2>\u4e09\u3001\u7ed3\u675f\u8bed<\/h2>\n<p>\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd&#xff0c;\u4f60\u5df2\u7ecf\u638c\u63e1\u4e86\u5982\u4f55\u5728 Flask \u540e\u7aef\u5f00\u53d1\u4e2d\u4f7f\u7528 ORM \u6a21\u578b\u9ad8\u6548\u5730\u6267\u884c\u6570\u636e\u5e93\u7684\u589e\u3001\u5220\u3001\u6539\u3001\u67e5\u64cd\u4f5c\u3002ORM \u6a21\u578b\u4e0d\u4ec5\u7b80\u5316\u4e86\u6570\u636e\u5e93\u64cd\u4f5c&#xff0c;\u8fd8\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002\u5e0c\u671b\u672c\u6587\u7684\u5185\u5bb9\u80fd\u591f\u5e2e\u52a9\u4f60\u5728 Flask \u540e\u7aef\u5f00\u53d1\u4e2d\u66f4\u52a0\u9ad8\u6548\u5730\u4f7f\u7528 ORM \u6a21\u578b&#xff0c;\u63d0\u5347\u4f60\u7684\u5f00\u53d1\u6280\u80fd\u3002<\/p>\n<hr \/>\n<p>\u6700\u540e&#xff0c;\u611f\u8c22\u4f60\u7684\u9605\u8bfb&#xff01;\u5982\u679c\u4f60\u89c9\u5f97\u672c\u6587\u5bf9\u4f60\u6709\u5e2e\u52a9&#xff0c;\u4e0d\u59a8\u70b9\u8d5e\u548c\u5173\u6ce8&#xff0c;\u6211\u4f1a\u7ee7\u7eed\u5206\u4eab\u66f4\u591a\u5173\u4e8e Python \u548c Flask \u5f00\u53d1\u7684\u5b9e\u7528\u77e5\u8bc6\u3002&#x1f680;<\/p>\n<p>\u6211\u7684\u90ae\u7bb1&#xff1a;yifanduan&#064;stu.ncst.edu.cn.<\/p>\n<p>\u5173\u6ce8\u4e13\u680f&#xff0c;\u6bcf\u5468\u66f4\u65b0&#xff0c;\u5e26\u4f60\u4ece\u201c\u7b2c\u4e00\u4e2a Flask \u9879\u76ee\u201d\u4e00\u8def\u8fdb\u9636\u5230\u201cDocker \u90e8\u7f72\u3001JWT 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