{"id":92812,"date":"2026-08-11T11:16:57","date_gmt":"2026-08-11T03:16:57","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/92812.html"},"modified":"2026-08-11T11:16:57","modified_gmt":"2026-08-11T03:16:57","slug":"flask-%e6%a0%b8%e5%bf%83%e9%80%9f%e6%9f%a5%e4%b8%8e%e5%ae%9e%e6%88%98%e6%89%8b%e5%86%8c","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/92812.html","title":{"rendered":"Flask \u6838\u5fc3\u901f\u67e5\u4e0e\u5b9e\u6218\u624b\u518c"},"content":{"rendered":"
\n

1. \u5feb\u901f\u542f\u52a8\u4e0e\u73af\u5883\u914d\u7f6e<\/h3>\n

1.1 \u865a\u62df\u73af\u5883（\u5fc5\u9009）<\/h4>\n

# \u521b\u5efa<\/span>
\npython -m<\/span> venv venv<\/p>\n

# \u6fc0\u6d3b (Windows)<\/span>
\nvenv\\\\<\/span>Scripts\\\\<\/span>activate
\n# \u6fc0\u6d3b (Mac\/Linux)<\/span>
\nsource<\/span> venv\/bin\/activate<\/p>\n

# \u5b89\u88c5<\/span>
\npip install<\/span> flask<\/p>\n

1.2 \u6700\u5c0f\u5e94\u7528\u7ed3\u6784<\/h4>\n

from<\/span> flask import<\/span> Flask<\/p>\n

app =<\/span> Flask(<\/span>__name__)<\/span><\/p>\n

@app.<\/span>route<\/span>(<\/span>'\/'<\/span>)<\/span>
\ndef<\/span> index<\/span>(<\/span>)<\/span>:<\/span>
\n return<\/span> "Hello, Flask!"<\/span><\/p>\n

if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
\n # \u751f\u4ea7\u73af\u5883\u8bf7\u52ff\u4f7f\u7528 debug=True<\/span>
\n app.<\/span>run(<\/span>debug=<\/span>True<\/span>,<\/span> port=<\/span>5000<\/span>)<\/span><\/p>\n

1.3 \u914d\u7f6e\u7ba1\u7406<\/h4>\n

\u63a8\u8350\u4f7f\u7528\u5de5\u5382\u6a21\u5f0f + \u73af\u5883\u53d8\u91cf：<\/p>\n

import<\/span> os
\nfrom<\/span> flask import<\/span> Flask<\/p>\n

def<\/span> create_app<\/span>(<\/span>config_name=<\/span>None<\/span>)<\/span>:<\/span>
\n app =<\/span> Flask(<\/span>__name__)<\/span>
\n config_map =<\/span> {<\/span>
\n 'dev'<\/span>:<\/span> 'config.DevelopmentConfig'<\/span>,<\/span>
\n 'prod'<\/span>:<\/span> 'config.ProductionConfig'<\/span>
\n }<\/span>
\n app.<\/span>config.<\/span>from_object(<\/span>config_map.<\/span>get(<\/span>config_name,<\/span> 'config.DevelopmentConfig'<\/span>)<\/span>)<\/span>
\n return<\/span> app<\/p>\n

\n

2. \u8def\u7531\u4e0e\u8bf7\u6c42\u5904\u7406<\/h3>\n

2.1 \u8def\u7531\u6838\u5fc3<\/h4>\n\n\u7279\u6027\u793a\u4f8b\u8bf4\u660e<\/tr>\n\n\n\n\n\n
\u52a8\u6001\u53c2\u6570<\/td>\n\/user\/<int:user_id><\/td>\n\u652f\u6301 int, float, path, uuid<\/td>\n<\/tr>\n
HTTP \u65b9\u6cd5<\/td>\nmethods=['GET', 'POST']<\/td>\n\u9ed8\u8ba4\u4ec5 GET<\/td>\n<\/tr>\n
URL \u6784\u5efa<\/td>\nurl_for('index', _external=True)<\/td>\n\u907f\u514d\u786c\u7f16\u7801，\u652f\u6301\u53cd\u5411\u89e3\u6790<\/td>\n<\/tr>\n
\u9759\u6001\u6587\u4ef6<\/td>\nurl_for('static', filename='css\/style.css')<\/td>\n\u81ea\u52a8\u6620\u5c04 \/static \u76ee\u5f55<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.2 \u8bf7\u6c42\u6570\u636e\u63d0\u53d6<\/h4>\n

from<\/span> flask import<\/span> request<\/p>\n

# 1. \u67e5\u8be2\u53c2\u6570 ?key=value<\/span>
\nval =<\/span> request.<\/span>args.<\/span>get(<\/span>'key'<\/span>,<\/span> 'default'<\/span>)<\/span><\/p>\n

# 2. \u8868\u5355\u6570\u636e (application\/x-www-form-urlencoded)<\/span>
\nval =<\/span> request.<\/span>form.<\/span>get(<\/span>'username'<\/span>)<\/span><\/p>\n

# 3. JSON \u6570\u636e (application\/json)<\/span>
\ndata =<\/span> request.<\/span>get_json(<\/span>silent=<\/span>True<\/span>)<\/span><\/p>\n

# 4. \u6587\u4ef6\u4e0a\u4f20<\/span>
\nfile<\/span> =<\/span> request.<\/span>files.<\/span>get(<\/span>'avatar'<\/span>)<\/span>
\nfile<\/span>.<\/span>save(<\/span>f"uploads\/<\/span>{<\/span>file<\/span>.<\/span>filename}<\/span><\/span>"<\/span><\/span>)<\/span><\/p>\n

\n

3. \u6a21\u677f\u5f15\u64ce (Jinja2)<\/h3>\n

3.1 \u6838\u5fc3\u8bed\u6cd5<\/h4>\n
    \n
  • \u53d8\u91cf\u8f93\u51fa：{{ user.name }}<\/li>\n
  • \u63a7\u5236\u6d41：{% if user.is_admin %} … {% endif %}<\/li>\n
  • \u5faa\u73af：{% for item in items %} … {% endfor %}<\/li>\n
  • \u7ee7\u627f：{% extends "base.html" %} + {% block content %}{% endblock %}<\/li>\n<\/ul>\n

    3.2 \u5b89\u5168\u4e0e\u8fc7\u6ee4\u5668<\/h4>\n
      \n
    • \u81ea\u52a8\u8f6c\u4e49：Flask \u9ed8\u8ba4\u5f00\u542f，\u9632 XSS\u3002<\/li>\n
    • \u53d6\u6d88\u8f6c\u4e49：{{ html_content | safe }}（\u4ec5\u7528\u4e8e\u53ef\u4fe1\u5185\u5bb9）<\/li>\n
    • \u5e38\u7528\u8fc7\u6ee4\u5668：{{ date | datetimeformat }}, {{ text | truncate(50) }}<\/li>\n<\/ul>\n
      \n

      4. \u6570\u636e\u5e93\u4e0e ORM (Flask-SQLAlchemy)<\/h3>\n

      4.1 \u6a21\u578b\u5b9a\u4e49<\/h4>\n

      from<\/span> flask_sqlalchemy import<\/span> SQLAlchemy<\/p>\n

      db =<\/span> SQLAlchemy(<\/span>)<\/span><\/p>\n

      class<\/span> User<\/span>(<\/span>db.<\/span>Model)<\/span>:<\/span>
      \n id<\/span> =<\/span> db.<\/span>Column(<\/span>db.<\/span>Integer,<\/span> primary_key=<\/span>True<\/span>)<\/span>
      \n username =<\/span> db.<\/span>Column(<\/span>db.<\/span>String(<\/span>80<\/span>)<\/span>,<\/span> unique=<\/span>True<\/span>,<\/span> nullable=<\/span>False<\/span>)<\/span>
      \n posts =<\/span> db.<\/span>relationship(<\/span>'Post'<\/span>,<\/span> backref=<\/span>'author'<\/span>,<\/span> lazy=<\/span>'dynamic'<\/span>)<\/span><\/p>\n

      4.2 \u5e38\u7528\u64cd\u4f5c<\/h4>\n

      # \u589e<\/span>
      \ndb.<\/span>session.<\/span>add(<\/span>user)<\/span>
      \ndb.<\/span>session.<\/span>commit(<\/span>)<\/span><\/p>\n

      # \u67e5<\/span>
      \nuser =<\/span> User.<\/span>query.<\/span>filter_by(<\/span>username=<\/span>'admin'<\/span>)<\/span>.<\/span>first(<\/span>)<\/span>
      \nusers =<\/span> User.<\/span>query.<\/span>filter<\/span>(<\/span>User.<\/span>id<\/span> ><\/span> 10<\/span>)<\/span>.<\/span>all<\/span>(<\/span>)<\/span><\/p>\n

      # \u6539<\/span>
      \nuser.<\/span>username =<\/span> 'new_name'<\/span>
      \ndb.<\/span>session.<\/span>commit(<\/span>)<\/span><\/p>\n

      # \u5220<\/span>
      \ndb.<\/span>session.<\/span>delete(<\/span>user)<\/span>
      \ndb.<\/span>session.<\/span>commit(<\/span>)<\/span><\/p>\n

      \n

      5. \u6838\u5fc3\u6269\u5c55\u751f\u6001<\/h3>\n\n\u6269\u5c55\u540d\u7528\u9014\u5907\u6ce8<\/tr>\n\n\n\n\n\n\n\n
      Flask-SQLAlchemy<\/td>\n\u6570\u636e\u5e93 ORM<\/td>\n\u7b80\u5316\u6570\u636e\u5e93\u64cd\u4f5c<\/td>\n<\/tr>\n
      Flask-Migrate<\/td>\n\u6570\u636e\u5e93\u8fc1\u79fb<\/td>\n\u57fa\u4e8e Alembic，\u7ba1\u7406\u8868\u7ed3\u6784\u53d8\u66f4<\/td>\n<\/tr>\n
      Flask-Login<\/td>\n\u7528\u6237\u8ba4\u8bc1<\/td>\n\u7ba1\u7406 current_user, \u767b\u5f55\/\u767b\u51fa<\/td>\n<\/tr>\n
      Flask-WTF<\/td>\n\u8868\u5355\u5904\u7406<\/td>\n\u8868\u5355\u9a8c\u8bc1 + CSRF \u9632\u62a4<\/td>\n<\/tr>\n
      Flask-RESTful<\/td>\nAPI \u5f00\u53d1<\/td>\n\u8d44\u6e90\u7c7b\u89c6\u56fe，\u5feb\u901f\u6784\u5efa REST API<\/td>\n<\/tr>\n
      Flask-Caching<\/td>\n\u7f13\u5b58<\/td>\n\u652f\u6301 Redis\/Memcached<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \n

      6. \u9879\u76ee\u67b6\u6784：\u84dd\u56fe (Blueprint)<\/h3>\n

      \u89e3\u51b3\u5927\u578b\u9879\u76ee\u4ee3\u7801\u8026\u5408\u95ee\u9898，\u5b9e\u73b0\u6a21\u5757\u5316\u3002<\/p>\n

      # app\/auth\/views.py<\/span>
      \nfrom<\/span> flask import<\/span> Blueprint<\/p>\n

      auth_bp =<\/span> Blueprint(<\/span>'auth'<\/span>,<\/span> __name__,<\/span> url_prefix=<\/span>'\/auth'<\/span>)<\/span><\/p>\n

      @auth_bp.<\/span>route<\/span>(<\/span>'\/login'<\/span>)<\/span>
      \ndef<\/span> login<\/span>(<\/span>)<\/span>:<\/span>
      \n return<\/span> "Login Page"<\/span><\/p>\n

      # app\/__init__.py<\/span>
      \nfrom<\/span> app.<\/span>auth.<\/span>views import<\/span> auth_bp<\/p>\n

      def<\/span> create_app<\/span>(<\/span>)<\/span>:<\/span>
      \n app =<\/span> Flask(<\/span>__name__)<\/span>
      \n app.<\/span>register_blueprint(<\/span>auth_bp)<\/span>
      \n return<\/span> app<\/p>\n

      \n

      7. \u5b89\u5168\u4e0e\u751f\u4ea7\u90e8\u7f72<\/h3>\n

      7.1 \u5b89\u5168\u6e05\u5355<\/h4>\n
    • SECRET_KEY：\u5fc5\u987b\u8bbe\u7f6e\u5f3a\u968f\u673a\u5bc6\u94a5，\u7528\u4e8e Session \u7b7e\u540d\u3002<\/li>\n
    • CSRF：\u6240\u6709\u8868\u5355\u5fc5\u987b\u5305\u542b CSRF Token (Flask-WTF)\u3002<\/li>\n
    • \u5bc6\u7801\u5b58\u50a8：\u7981\u6b62\u660e\u6587，\u4f7f\u7528 werkzeug.security.generate_password_hash\u3002<\/li>\n
    • \u8f93\u5165\u9a8c\u8bc1：\u6c38\u8fdc\u4e0d\u8981\u4fe1\u4efb\u5ba2\u6237\u7aef\u6570\u636e，\u540e\u7aef\u5fc5\u987b\u6821\u9a8c\u3002<\/li>\n

      7.2 \u751f\u4ea7\u90e8\u7f72\u65b9\u6848<\/h4>\n

      \u7981\u6b62：app.run()（Werkzeug \u5f00\u53d1\u670d\u52a1\u5668\u6027\u80fd\u5dee\u4e14\u4e0d\u7a33\u5b9a）<\/p>\n

      \u63a8\u8350\u6808：<\/p>\n

    • \n

      WSGI \u670d\u52a1\u5668：Gunicorn (Linux) \u6216 Waitress (Windows)<\/p>\n

      gunicorn -w<\/span> 4<\/span> -b<\/span> 0.0<\/span>.0.0:5000 "app:create_app()"<\/span><\/p>\n<\/li>\n

    • \n

      \u53cd\u5411\u4ee3\u7406：Nginx<\/p>\n

        \n
      • \u5904\u7406\u9759\u6001\u6587\u4ef6 (CSS\/JS\/Images)<\/li>\n
      • SSL \u7ec8\u6b62 (HTTPS)<\/li>\n
      • \u8d1f\u8f7d\u5747\u8861<\/li>\n
      • \u8f6c\u53d1\u8bf7\u6c42\u5230 Gunicorn<\/li>\n<\/ul>\n<\/li>\n
        \n

        8. \u5b9e\u6218\u5b66\u4e60\u8def\u5f84<\/h3>\n
      • \u5165\u95e8：\u4e2a\u4eba\u535a\u5ba2（\u8def\u7531\u3001\u6a21\u677f\u3001SQLite\u3001CRUD）<\/li>\n
      • \u8fdb\u9636：\u7528\u6237\u7cfb\u7edf（\u6ce8\u518c\/\u767b\u5f55\/\u6743\u9650\/\u90ae\u7bb1\u9a8c\u8bc1\/\u5934\u50cf\u4e0a\u4f20）<\/li>\n
      • \u9ad8\u9636：RESTful API（JSON \u54cd\u5e94\u3001Swagger \u6587\u6863\u3001Redis \u7f13\u5b58\u3001Celery \u5f02\u6b65\u4efb\u52a1）<\/li>\n
      • \u67b6\u6784：\u5fae\u670d\u52a1\u62c6\u5206\u3001Docker \u5bb9\u5668\u5316\u90e8\u7f72\u3001CI\/CD \u6d41\u6c34\u7ebf<\/li>\n
        \n","protected":false},"excerpt":{"rendered":"

        1. \u5feb\u901f\u542f\u52a8\u4e0e\u73af\u5883\u914d\u7f6e
        \n1.1 \u865a\u62df\u73af\u5883（\u5fc5\u9009）
        \n# \u521b\u5efa
        \npython -m venv venv# \u6fc0\u6d3b (Windows)
        \nvenv\\\\Scripts\\\\activate
        \n# \u6fc0\u6d3b (Mac\/Linux)
        \nsource venv\/bin\/activate# \u5b89\u88c5
        \npip install flask1.2 \u6700\u5c0f\u5e94\u7528\u7ed3\u6784
        \nfrom flask import Flaskapp Flask(__name__)app.route(\/)
        \ndef index<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[153,81,292],"topic":[],"class_list":["post-92812","post","type-post","status-publish","format-standard","hentry","category-server","tag-flask","tag-python","tag-292"],"yoast_head":"\nFlask \u6838\u5fc3\u901f\u67e5\u4e0e\u5b9e\u6218\u624b\u518c - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/92812.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flask \u6838\u5fc3\u901f\u67e5\u4e0e\u5b9e\u6218\u624b\u518c - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"1. \u5feb\u901f\u542f\u52a8\u4e0e\u73af\u5883\u914d\u7f6e 1.1 \u865a\u62df\u73af\u5883（\u5fc5\u9009） # \u521b\u5efa python -m venv venv# \u6fc0\u6d3b (Windows) venv\\Scripts\\activate # \u6fc0\u6d3b (Mac\/Linux) source venv\/bin\/activate# \u5b89\u88c5 pip install flask1.2 \u6700\u5c0f\u5e94\u7528\u7ed3\u6784 from flask import Flaskapp Flask(__name__)app.route(\/) def index\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/92812.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-11T03:16:57+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/92812.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/92812.html\",\"name\":\"Flask \u6838\u5fc3\u901f\u67e5\u4e0e\u5b9e\u6218\u624b\u518c - 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