{"id":1495,"date":"2025-02-09T18:50:37","date_gmt":"2025-02-09T10:50:37","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=1495"},"modified":"2025-02-09T18:50:38","modified_gmt":"2025-02-09T10:50:38","slug":"flask-%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5%e4%b8%8e%e7%ae%80%e5%8d%95%e5%ba%94%e7%94%a8%e6%9e%84%e5%bb%ba%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/02\/09\/flask-%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5%e4%b8%8e%e7%ae%80%e5%8d%95%e5%ba%94%e7%94%a8%e6%9e%84%e5%bb%ba%e6%95%99%e7%a8%8b\/","title":{"rendered":"Flask \u57fa\u672c\u6982\u5ff5\u4e0e\u7b80\u5355\u5e94\u7528\u6784\u5efa\u6559\u7a0b"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Flask \u662f\u4e00\u4e2a\u975e\u5e38\u7075\u6d3b\u4e14\u6613\u4e8e\u4e0a\u624b\u7684 Web \u6846\u67b6\uff0c\u7279\u522b\u9002\u5408\u6784\u5efa\u5c0f\u578b\u5e94\u7528\u6216\u8005\u539f\u578b\u3002\u4e0b\u9762\u8be6\u7ec6\u4ecb\u7ecd Flask \u7684\u57fa\u672c\u6982\u5ff5\uff0c\u5e76\u7b80\u5355\u6307\u5bfc\u5982\u4f55\u5f00\u59cb\u6784\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Flask \u7b80\u4ecb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Flask \u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684 Web \u6846\u67b6\uff0c\u5b83\u662f\u57fa\u4e8e WSGI\uff08Web Server Gateway Interface\uff09\u6807\u51c6\u6784\u5efa\u7684\u3002Flask \u7684\u6838\u5fc3\u76ee\u6807\u662f\u63d0\u4f9b\u4e00\u4e2a\u7b80\u5355\u7684 API\uff0c\u8ba9\u5f00\u53d1\u8005\u80fd\u591f\u4ee5\u6700\u5c11\u7684\u4ee3\u7801\u6784\u5efa\u529f\u80fd\u9f50\u5168\u7684 Web \u5e94\u7528\u3002Flask \u672c\u8eab\u5e76\u4e0d\u5305\u542b\u5f88\u591a\u5185\u7f6e\u7684\u529f\u80fd\uff08\u4f8b\u5982\u8ba4\u8bc1\u3001\u6570\u636e\u5e93\u7b49\uff09\uff0c\u4f46\u4f60\u53ef\u4ee5\u901a\u8fc7\u5b89\u88c5\u6269\u5c55\u6765\u589e\u5f3a\u529f\u80fd\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u5b89\u88c5 Flask<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\uff0c\u4f60\u9700\u8981\u5728\u4f60\u7684\u5f00\u53d1\u73af\u5883\u4e2d\u5b89\u88c5 Flask\u3002\u53ef\u4ee5\u4f7f\u7528 <code>pip<\/code> \u6765\u5b89\u88c5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>pip install flask<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684 Flask \u5e94\u7528<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 Flask \u4e2d\uff0c\u6700\u57fa\u672c\u7684 Web \u5e94\u7528\u7531\u4e00\u4e2a Python \u6587\u4ef6\u548c\u4e00\u4e9b\u8def\u7531\u7ec4\u6210\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684 Flask \u5e94\u7528\u793a\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from flask import Flask\n\napp = Flask(__name__)\n\n@app.route('\/')\ndef hello_world():\n    return \"Hello, World!\"\n\nif __name__ == '__main__':\n    app.run(debug=True)<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u89e3\u91ca\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>Flask(__name__)<\/code>\uff1a\u521b\u5efa\u4e00\u4e2a Flask \u5e94\u7528\u5b9e\u4f8b\u3002<\/li>\n\n\n\n<li><code>@app.route('\/')<\/code>\uff1a\u5b9a\u4e49\u4e00\u4e2a\u8def\u7531\uff0c\u5f53\u8bbf\u95ee\u7f51\u7ad9\u7684\u6839\u76ee\u5f55\u65f6\uff0c\u6267\u884c <code>hello_world()<\/code> \u51fd\u6570\u3002<\/li>\n\n\n\n<li><code>app.run(debug=True)<\/code>\uff1a\u542f\u52a8\u5e94\u7528\uff0c\u5e76\u542f\u7528\u8c03\u8bd5\u6a21\u5f0f\u3002\u8c03\u8bd5\u6a21\u5f0f\u4f1a\u81ea\u52a8\u91cd\u8f7d\u670d\u52a1\u5668\uff0c\u5e76\u663e\u793a\u8be6\u7ec6\u7684\u9519\u8bef\u4fe1\u606f\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u8def\u7531\u548c\u89c6\u56fe\u51fd\u6570<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Flask \u7684\u8def\u7531\u5b9a\u4e49\u4e86 URL \u8def\u5f84\u548c\u89c6\u56fe\u51fd\u6570\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u3002\u4f8b\u5982\uff0c\u5f53\u4f60\u8bbf\u95ee <code>\/home<\/code> \u8def\u5f84\u65f6\uff0cFlask \u4f1a\u8c03\u7528\u5bf9\u5e94\u7684\u89c6\u56fe\u51fd\u6570\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@app.route('\/home')\ndef home():\n    return \"Welcome to the home page!\"<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u53ef\u4ee5\u4e3a\u4e0d\u540c\u7684\u8def\u5f84\u5b9a\u4e49\u4e0d\u540c\u7684\u89c6\u56fe\u51fd\u6570\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. \u6a21\u677f\u5f15\u64ce<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Flask \u4f7f\u7528 Jinja2 \u4f5c\u4e3a\u6a21\u677f\u5f15\u64ce\uff0c\u4f60\u53ef\u4ee5\u5728 HTML \u6587\u4ef6\u4e2d\u63d2\u5165\u52a8\u6001\u6570\u636e\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;!DOCTYPE html&gt;\n&lt;html&gt;\n&lt;head&gt;\n    &lt;title&gt;Welcome Page&lt;\/title&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n    &lt;h1&gt;Hello, {{ name }}!&lt;\/h1&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 Python \u89c6\u56fe\u51fd\u6570\u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f20\u9012\u6570\u636e\u7ed9\u6a21\u677f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from flask import render_template\n\n@app.route('\/greet\/&lt;name&gt;')\ndef greet(name):\n    return render_template('greet.html', name=name)<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">6. \u8868\u5355\u548c\u8bf7\u6c42\u6570\u636e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Flask \u63d0\u4f9b\u4e86 <code>request<\/code> \u5bf9\u8c61\u6765\u5904\u7406\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e\u3002\u4f8b\u5982\uff0c\u5904\u7406 POST \u8bf7\u6c42\u548c\u8868\u5355\u6570\u636e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from flask import request\n\n@app.route('\/submit', methods=&#91;'POST'])\ndef submit():\n    username = request.form&#91;'username']\n    return f\"Hello, {username}!\"<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">7. \u6570\u636e\u5e93\u96c6\u6210<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Flask \u672c\u8eab\u4e0d\u5305\u542b\u6570\u636e\u5e93\uff0c\u4f46\u4f60\u53ef\u4ee5\u4f7f\u7528\u6269\u5c55\uff08\u5982 Flask-SQLAlchemy\uff09\u6765\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002\u9996\u5148\u5b89\u88c5 Flask-SQLAlchemy\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>pip install flask-sqlalchemy<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7136\u540e\uff0c\u4f60\u53ef\u4ee5\u521b\u5efa\u6570\u636e\u5e93\u6a21\u578b\uff0c\u5e76\u5728\u5e94\u7528\u4e2d\u8fdb\u884c\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from flask import Flask\nfrom flask_sqlalchemy import SQLAlchemy\n\napp = Flask(__name__)\napp.config&#91;'SQLALCHEMY_DATABASE_URI'] = 'sqlite:\/\/\/example.db'\ndb = SQLAlchemy(app)\n\nclass User(db.Model):\n    id = db.Column(db.Integer, primary_key=True)\n    username = db.Column(db.String(120), unique=True, nullable=False)\n\n@app.route('\/add_user')\ndef add_user():\n    user = User(username=\"JohnDoe\")\n    db.session.add(user)\n    db.session.commit()\n    return f\"User {user.username} added!\"\n\nif __name__ == '__main__':\n    app.run(debug=True)<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">8. Flask \u7684\u5e38\u7528\u6269\u5c55<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Flask \u672c\u8eab\u6bd4\u8f83\u7b80\u6d01\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u6269\u5c55\u6765\u589e\u52a0\u529f\u80fd\u3002\u5e38\u89c1\u7684 Flask \u6269\u5c55\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Flask-SQLAlchemy<\/strong>\uff1a\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92<\/li>\n\n\n\n<li><strong>Flask-WTF<\/strong>\uff1a\u5904\u7406\u8868\u5355<\/li>\n\n\n\n<li><strong>Flask-Login<\/strong>\uff1a\u7528\u6237\u8ba4\u8bc1<\/li>\n\n\n\n<li><strong>Flask-Mail<\/strong>\uff1a\u53d1\u9001\u90ae\u4ef6<\/li>\n\n\n\n<li><strong>Flask-Migrate<\/strong>\uff1a\u6570\u636e\u5e93\u8fc1\u79fb<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">9. \u90e8\u7f72\u5e94\u7528<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4f60\u5b8c\u6210\u4e86\u5e94\u7528\u7684\u5f00\u53d1\uff0c\u63a5\u4e0b\u6765\u662f\u90e8\u7f72\u5230\u751f\u4ea7\u73af\u5883\u3002Flask \u9ed8\u8ba4\u7684\u5f00\u53d1\u670d\u52a1\u5668\u5e76\u4e0d\u9002\u7528\u4e8e\u751f\u4ea7\u73af\u5883\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u50cf <strong>Gunicorn<\/strong> \u8fd9\u6837\u7684 WSGI \u670d\u52a1\u5668\u8fdb\u884c\u90e8\u7f72\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff0c\u4f7f\u7528 Gunicorn \u542f\u52a8 Flask \u5e94\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>pip install gunicorn\ngunicorn -w 4 app:app<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u5c06\u4f7f\u7528 4 \u4e2a\u5de5\u4f5c\u8fdb\u7a0b\u8fd0\u884c Flask \u5e94\u7528\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e0b\u4e00\u6b65<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e86\u89e3 Flask \u4e2d\u7684\u84dd\u56fe\uff08Blueprints\uff09\uff0c\u5e2e\u52a9\u4f60\u7ec4\u7ec7\u5927\u578b\u5e94\u7528\u3002<\/li>\n\n\n\n<li>\u5b66\u4e60\u5982\u4f55\u5728 Flask \u4e2d\u5904\u7406\u9759\u6001\u6587\u4ef6\uff08\u4f8b\u5982\u56fe\u7247\u3001CSS \u6587\u4ef6\u7b49\uff09\u3002<\/li>\n\n\n\n<li>\u8fdb\u884c\u524d\u540e\u7aef\u5206\u79bb\u7684\u5f00\u53d1\uff0c\u4f7f\u7528 Flask \u6784\u5efa RESTful API\uff0c\u4e0e\u524d\u7aef\u6846\u67b6\uff08\u5982 React \u6216 Vue\uff09\u7ed3\u5408\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Flask \u662f\u4e00\u4e2a\u975e\u5e38\u7075\u6d3b\u4e14\u6613\u4e8e\u4e0a\u624b\u7684 Web \u6846\u67b6\uff0c\u7279\u522b\u9002\u5408\u6784\u5efa\u5c0f\u578b\u5e94\u7528\u6216\u8005\u539f\u578b\u3002\u4e0b\u9762\u8be6\u7ec6\u4ecb\u7ecd Flask  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[],"class_list":["post-1495","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1495","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=1495"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1495\/revisions"}],"predecessor-version":[{"id":1496,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1495\/revisions\/1496"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=1495"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=1495"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=1495"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}