{"id":175,"date":"2026-06-17T19:36:17","date_gmt":"2026-06-17T11:36:17","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=175"},"modified":"2026-06-17T19:36:17","modified_gmt":"2026-06-17T11:36:17","slug":"flask-%e8%a1%a8%e5%8d%95%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2026\/06\/17\/flask-%e8%a1%a8%e5%8d%95%e5%a4%84%e7%90%86\/","title":{"rendered":"Flask \u8868\u5355\u5904\u7406"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5728 Web \u5f00\u53d1\u4e2d\uff0c<strong>\u8868\u5355\uff08Form\uff09<\/strong> \u662f\u7528\u6237\u4e0e\u670d\u52a1\u5668\u4ea4\u4e92\u7684\u6838\u5fc3\u65b9\u5f0f\uff08\u5982\u767b\u5f55\u3001\u6ce8\u518c\u3001\u641c\u7d22\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 Flask \u4e2d\u5904\u7406\u8868\u5355\u4e3b\u8981\u6709\u4e24\u79cd\u6d41\u6d3e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u539f\u751f\u65b9\u5f0f<\/strong>\uff1a\u76f4\u63a5\u4f7f\u7528 <code>request.form<\/code> \u83b7\u53d6\u6570\u636e\u3002\u7b80\u5355\u76f4\u63a5\uff0c\u4f46\u9700\u8981\u624b\u52a8\u5904\u7406\u9a8c\u8bc1\u548c\u5b89\u5168\u95ee\u9898\u3002<\/li>\n\n\n\n<li><strong>\u6269\u5c55\u65b9\u5f0f\uff08\u63a8\u8350\uff09<\/strong>\uff1a\u4f7f\u7528 <strong>Flask-WTF<\/strong>\u3002\u5b83\u63d0\u4f9b\u4e86\u8868\u5355\u7c7b\u5b9a\u4e49\u3001\u81ea\u52a8\u6570\u636e\u9a8c\u8bc1\u548c CSRF \u4fdd\u62a4\uff0c\u662f\u5de5\u4e1a\u7ea7\u5f00\u53d1\u7684\u6807\u51c6\u9009\u62e9\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u26a0\ufe0f \u6838\u5fc3\u5b89\u5168\u6982\u5ff5\uff1aCSRF<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8de8\u7ad9\u8bf7\u6c42\u4f2a\u9020 (CSRF)<\/strong> \u662f\u4e00\u79cd\u5e38\u89c1\u653b\u51fb\u3002\u653b\u51fb\u8005\u8bf1\u5bfc\u7528\u6237\u5728\u5df2\u767b\u5f55\u7684\u72b6\u6001\u4e0b\u70b9\u51fb\u6076\u610f\u94fe\u63a5\uff0c\u4ece\u800c\u4ee5\u7528\u6237\u8eab\u4efd\u6267\u884c\u975e\u9884\u671f\u64cd\u4f5c\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9632\u5fa1\u65b9\u6cd5<\/strong>\uff1a\u5728\u6bcf\u4e2a\u8868\u5355\u4e2d\u52a0\u5165\u4e00\u4e2a\u9690\u85cf\u7684\u3001\u968f\u673a\u7684 Token\uff08\u4ee4\u724c\uff09\uff0c\u670d\u52a1\u5668\u9a8c\u8bc1\u8be5 Token \u662f\u5426\u5408\u6cd5\u3002<\/li>\n\n\n\n<li><strong>Flask-WTF<\/strong> \u4f1a\u81ea\u52a8\u5e2e\u4f60\u751f\u6210\u548c\u9a8c\u8bc1\u8fd9\u4e2a Token\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6848\u4e00\uff1a\u539f\u751f\u8868\u5355\u5904\u7406\uff08\u7406\u89e3\u5e95\u5c42\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9002\u5408\u6781\u7b80\u573a\u666f\u6216\u5b66\u4e60\u539f\u7406\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. HTML \u6a21\u677f (<code>templates\/login.html<\/code>)<\/h4>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">&lt;form method=&quot;POST&quot; action=&quot;\/login&quot;&gt;\n    &lt;!-- \u6ce8\u610f\uff1a\u539f\u751f\u65b9\u5f0f\u6ca1\u6709 CSRF Token\uff0c\u5b58\u5728\u5b89\u5168\u9690\u60a3 --&gt;\n    &lt;input type=&quot;text&quot; name=&quot;username&quot; placeholder=&quot;\u7528\u6237\u540d&quot;&gt;\n    &lt;input type=&quot;password&quot; name=&quot;password&quot; placeholder=&quot;\u5bc6\u7801&quot;&gt;\n    &lt;button type=&quot;submit&quot;&gt;\u767b\u5f55&lt;\/button&gt;\n&lt;\/form&gt;<\/code><\/pre><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">2. Python \u89c6\u56fe<\/h4>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><span>13<\/span><span>14<\/span><span>15<\/span><span>16<\/span><span>17<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">from flask import request, render_template\n\n@app.route(&#039;\/login&#039;, methods=[&#039;GET&#039;, &#039;POST&#039;])\ndef login():\n    if request.method == &#039;POST&#039;:\n        # 1. \u83b7\u53d6\u6570\u636e\n        username = request.form.get(&#039;username&#039;)\n        password = request.form.get(&#039;password&#039;)\n\n        # 2. \u624b\u52a8\u9a8c\u8bc1\n        if not username or not password:\n            return &quot;\u8bf7\u8f93\u5165\u5b8c\u6574\u4fe1\u606f&quot;, 400\n\n        # 3. \u4e1a\u52a1\u903b\u8f91...\n        return f&quot;\u6b22\u8fce, {username}&quot;\n\n    return render_template(&#039;login.html&#039;)<\/code><\/pre><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6848\u4e8c\uff1a\u4f7f\u7528 Flask-WTF\uff08\u2b50 \u6700\u4f73\u5b9e\u8df5\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f Flask \u793e\u533a\u63a8\u8350\u7684\u65b9\u5f0f\u3002\u5b83\u5c06\u8868\u5355\u62bd\u8c61\u4e3a Python \u7c7b\uff0c\u4ee3\u7801\u66f4\u6574\u6d01\u3001\u66f4\u5b89\u5168\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. \u5b89\u88c5\u4e0e\u914d\u7f6e<\/h4>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">pip install Flask-WTF<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5fc5\u987b\u914d\u7f6e SECRET_KEY<\/strong>\uff08\u7528\u4e8e\u52a0\u5bc6 CSRF Token\uff09\uff1a<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">app.config[&#039;SECRET_KEY&#039;] = &#039;your-secret-key-change-in-production&#039;<\/code><\/pre><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">2. \u5b9a\u4e49\u8868\u5355\u7c7b (<code>forms.py<\/code>)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u5c06\u8868\u5355\u7ed3\u6784\u5b9a\u4e49\u4e3a\u7c7b\uff0c\u5e76\u6dfb\u52a0\u9a8c\u8bc1\u89c4\u5219\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><span>13<\/span><span>14<\/span><span>15<\/span><span>16<\/span><span>17<\/span><span>18<\/span><span>19<\/span><span>20<\/span><span>21<\/span><span>22<\/span><span>23<\/span><span>24<\/span><span>25<\/span><span>26<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">from flask_wtf import FlaskForm\nfrom wtforms import StringField, PasswordField, SubmitField, BooleanField\nfrom wtforms.validators import DataRequired, Length, Email, EqualTo\n\nclass RegistrationForm(FlaskForm):\n    # \u5b57\u6bb5\u5b9a\u4e49\uff1a\u6807\u7b7e\u540d, \u9a8c\u8bc1\u5668\u5217\u8868\n    username = StringField(&#039;\u7528\u6237\u540d&#039;, validators=[\n        DataRequired(message=&#039;\u7528\u6237\u540d\u4e0d\u80fd\u4e3a\u7a7a&#039;),\n        Length(min=3, max=20, message=&#039;\u957f\u5ea6\u9700\u57283-20\u4e2a\u5b57\u7b26\u4e4b\u95f4&#039;)\n    ])\n\n    email = StringField(&#039;\u90ae\u7bb1&#039;, validators=[\n        DataRequired(),\n        Email(message=&#039;\u8bf7\u8f93\u5165\u6709\u6548\u7684\u90ae\u7bb1\u5730\u5740&#039;)\n    ])\n\n    password = PasswordField(&#039;\u5bc6\u7801&#039;, validators=[DataRequired()])\n\n    confirm_password = PasswordField(&#039;\u786e\u8ba4\u5bc6\u7801&#039;, validators=[\n        DataRequired(),\n        EqualTo(&#039;password&#039;, message=&#039;\u4e24\u6b21\u5bc6\u7801\u8f93\u5165\u4e0d\u4e00\u81f4&#039;)\n    ])\n\n    remember = BooleanField(&#039;\u8bb0\u4f4f\u6211&#039;)\n\n    submit = SubmitField(&#039;\u6ce8\u518c&#039;)<\/code><\/pre><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">3. \u89c6\u56fe\u51fd\u6570\u5904\u7406 (<code>routes.py<\/code>)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Flask-WTF \u63d0\u4f9b\u4e86 <code>validate_on_submit()<\/code> \u65b9\u6cd5\uff0c\u5b83\u4f1a\u81ea\u52a8\u5224\u65ad\u662f\u5426\u662f POST \u8bf7\u6c42\u5e76\u6267\u884c\u6240\u6709\u9a8c\u8bc1\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><span>13<\/span><span>14<\/span><span>15<\/span><span>16<\/span><span>17<\/span><span>18<\/span><span>19<\/span><span>20<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">from flask import render_template, redirect, url_for, flash\nfrom app.forms import RegistrationForm\n\n@app.route(&#039;\/register&#039;, methods=[&#039;GET&#039;, &#039;POST&#039;])\ndef register():\n    form = RegistrationForm()\n\n    # \u5982\u679c\u8bf7\u6c42\u662f POST \u4e14\u6240\u6709\u9a8c\u8bc1\u90fd\u901a\u8fc7\n    if form.validate_on_submit():\n        # \u83b7\u53d6\u6e05\u6d17\u540e\u7684\u6570\u636e\n        username = form.username.data\n        email = form.email.data\n\n        # TODO: \u4fdd\u5b58\u7528\u6237\u5230\u6570\u636e\u5e93\n\n        flash(&#039;\u6ce8\u518c\u6210\u529f\uff01\u8bf7\u767b\u5f55\u3002&#039;, &#039;success&#039;)\n        return redirect(url_for(&#039;login&#039;))\n\n    # \u5982\u679c\u662f GET \u8bf7\u6c42\uff0c\u6216\u8005\u9a8c\u8bc1\u5931\u8d25\uff0c\u6e32\u67d3\u8868\u5355\u5e76\u663e\u793a\u9519\u8bef\n    return render_template(&#039;register.html&#039;, form=form)<\/code><\/pre><\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">4. \u6a21\u677f\u6e32\u67d3 (<code>templates\/register.html<\/code>)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 Jinja2 \u4e2d\u6e32\u67d3\u8868\u5355\u5bf9\u8c61\u3002<\/p>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><span>13<\/span><span>14<\/span><span>15<\/span><span>16<\/span><span>17<\/span><span>18<\/span><span>19<\/span><span>20<\/span><span>21<\/span><span>22<\/span><span>23<\/span><span>24<\/span><span>25<\/span><span>26<\/span><span>27<\/span><span>28<\/span><span>29<\/span><span>30<\/span><span>31<\/span><span>32<\/span><span>33<\/span><span>34<\/span><span>35<\/span><span>36<\/span><span>37<\/span><span>38<\/span><span>39<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">&lt;form method=&quot;POST&quot; action=&quot;&quot;&gt;\n    &lt;!-- \u26a0\ufe0f \u5173\u952e\uff1a\u751f\u6210 CSRF \u9690\u85cf\u4ee4\u724c --&gt;\n    {{ form.hidden_tag() }}\n\n    &lt;div&gt;\n        {{ form.username.label }}&lt;br&gt;\n        {{ form.username(size=32) }}&lt;br&gt;\n        &lt;!-- \u663e\u793a\u9a8c\u8bc1\u9519\u8bef --&gt;\n        {% for error in form.username.errors %}\n            &lt;span style=&quot;color: red;&quot;&gt;[{{ error }}]&lt;\/span&gt;\n        {% endfor %}\n    &lt;\/div&gt;\n\n    &lt;div&gt;\n        {{ form.email.label }}&lt;br&gt;\n        {{ form.email(size=32) }}&lt;br&gt;\n        {% for error in form.email.errors %}\n            &lt;span style=&quot;color: red;&quot;&gt;[{{ error }}]&lt;\/span&gt;\n        {% endfor %}\n    &lt;\/div&gt;\n\n    &lt;div&gt;\n        {{ form.password.label }}&lt;br&gt;\n        {{ form.password(size=32) }}\n    &lt;\/div&gt;\n\n    &lt;div&gt;\n        {{ form.confirm_password.label }}&lt;br&gt;\n        {{ form.confirm_password(size=32) }}\n    &lt;\/div&gt;\n\n    &lt;div&gt;\n        {{ form.remember() }} {{ form.remember.label }}\n    &lt;\/div&gt;\n\n    &lt;div&gt;\n        {{ form.submit() }}\n    &lt;\/div&gt;\n&lt;\/form&gt;<\/code><\/pre><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcc2 \u6587\u4ef6\u4e0a\u4f20\u5904\u7406<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6587\u4ef6\u4e0a\u4f20\u662f\u8868\u5355\u7684\u7279\u6b8a\u60c5\u51b5\uff0c\u56e0\u4e3a\u6570\u636e\u4e0d\u662f\u6587\u672c\uff0c\u800c\u662f\u4e8c\u8fdb\u5236\u6d41\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5173\u952e\u70b9\uff1a<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>HTML \u8868\u5355\u5fc5\u987b\u8bbe\u7f6e <code>enctype=\"multipart\/form-data\"<\/code>\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528 <code>request.files<\/code> \u83b7\u53d6\u6587\u4ef6\u3002<\/li>\n\n\n\n<li><strong>\u5b89\u5168\u7b2c\u4e00<\/strong>\uff1a\u6c38\u8fdc\u4e0d\u8981\u4fe1\u4efb\u5ba2\u6237\u7aef\u4f20\u6765\u7684\u6587\u4ef6\u540d\uff0c\u4f7f\u7528 <code>secure_filename<\/code> \u6e05\u6d17\u3002<\/li>\n<\/ol>\n\n\n\n<div class=\"chp-code-block chp-theme-github-dark chp-wrap-on\" data-chp-language=\"plaintext\" data-chp-line-start=\"1\" data-chp-highlight=\"\"><div class=\"chp-toolbar\"><div class=\"chp-toolbar-left\"><span class=\"chp-dots\"><span><\/span><span><\/span><span><\/span><\/span><span class=\"chp-language-label\">\u7eaf\u6587\u672c<\/span><\/div><div class=\"chp-toolbar-right\"><button type=\"button\" class=\"chp-copy-btn\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><svg class=\"chp-icon-copy\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z\"\/><\/svg><svg class=\"chp-icon-check\" viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" aria-hidden=\"true\" style=\"display:none;\"><path fill=\"currentColor\" d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><span class=\"chp-copy-text\">\u590d\u5236<\/span><\/button><\/div><\/div><div class=\"chp-code-wrapper\"><div class=\"chp-line-numbers\" aria-hidden=\"true\"><span>1<\/span><span>2<\/span><span>3<\/span><span>4<\/span><span>5<\/span><span>6<\/span><span>7<\/span><span>8<\/span><span>9<\/span><span>10<\/span><span>11<\/span><span>12<\/span><span>13<\/span><span>14<\/span><span>15<\/span><span>16<\/span><span>17<\/span><span>18<\/span><span>19<\/span><span>20<\/span><span>21<\/span><span>22<\/span><span>23<\/span><span>24<\/span><span>25<\/span><span>26<\/span><span>27<\/span><span>28<\/span><span>29<\/span><span>30<\/span><span>31<\/span><\/div><pre class=\"chp-pre\" style=\"font-size:14px;\"><code class=\"language-plaintext\">import os\nfrom werkzeug.utils import secure_filename\nfrom flask import request, current_app\n\nALLOWED_EXTENSIONS = {&#039;png&#039;, &#039;jpg&#039;, &#039;jpeg&#039;, &#039;gif&#039;}\n\ndef allowed_file(filename):\n    return &#039;.&#039; in filename and \\\n           filename.rsplit(&#039;.&#039;, 1)[1].lower() in ALLOWED_EXTENSIONS\n\n@app.route(&#039;\/upload&#039;, methods=[&#039;POST&#039;])\ndef upload_file():\n    if &#039;file&#039; not in request.files:\n        return &#039;No file part&#039;, 400\n\n    file = request.files[&#039;file&#039;]\n\n    if file.filename == &#039;&#039;:\n        return &#039;No selected file&#039;, 400\n\n    if file and allowed_file(file.filename):\n        # \u6e05\u6d17\u6587\u4ef6\u540d\uff0c\u9632\u6b62\u8def\u5f84\u7a7f\u8d8a\u653b\u51fb (\u5982 ..\/..\/etc\/passwd)\n        filename = secure_filename(file.filename)\n\n        # \u4fdd\u5b58\u6587\u4ef6\n        save_path = os.path.join(current_app.config[&#039;UPLOAD_FOLDER&#039;], filename)\n        file.save(save_path)\n\n        return &#039;File uploaded successfully&#039;, 201\n\n    return &#039;Invalid file type&#039;, 400<\/code><\/pre><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><em>(\u6ce8\uff1aFlask-WTF \u4e5f\u6709 <code>FileField<\/code> \u548c <code>FileAllowed<\/code> \u9a8c\u8bc1\u5668\uff0c\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u96c6\u6210\u5230\u8868\u5355\u7c7b\u4e2d\u3002)<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udca1 \u6700\u4f73\u5b9e\u8df5\u603b\u7ed3<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u59cb\u7ec8\u4f7f\u7528 Flask-WTF<\/strong>\uff1a\u5b83\u80fd\u5e2e\u4f60\u5904\u7406 CSRF \u4fdd\u62a4\u548c\u590d\u6742\u7684\u6570\u636e\u9a8c\u8bc1\u903b\u8f91\u3002<\/li>\n\n\n\n<li><strong>PRG \u6a21\u5f0f (Post\/Redirect\/Get)<\/strong>\uff1a\u8868\u5355\u63d0\u4ea4\u6210\u529f\u540e\uff0c<strong>\u52a1\u5fc5\u91cd\u5b9a\u5411<\/strong>\u5230\u4e00\u4e2a\u65b0\u7684\u9875\u9762\uff08\u5982\u9996\u9875\u6216\u767b\u5f55\u9875\uff09\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u8fd4\u56de HTML\u3002\u8fd9\u6837\u53ef\u4ee5\u9632\u6b62\u7528\u6237\u5237\u65b0\u9875\u9762\u65f6\u91cd\u590d\u63d0\u4ea4\u8868\u5355\u3002<\/li>\n\n\n\n<li><strong>Flash \u6d88\u606f<\/strong>\uff1a\u4f7f\u7528 <code>flash()<\/code> \u51fd\u6570\u5728\u91cd\u5b9a\u5411\u524d\u5b58\u50a8\u4e00\u6b21\u6027\u6d88\u606f\uff0c\u5728\u4e0b\u4e00\u4e2a\u9875\u9762\u663e\u793a\u201c\u64cd\u4f5c\u6210\u529f\u201d\u6216\u201c\u9a8c\u8bc1\u5931\u8d25\u201d\u3002<\/li>\n\n\n\n<li><strong>\u6587\u4ef6\u5b89\u5168<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9650\u5236\u6587\u4ef6\u6269\u5c55\u540d\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528 <code>secure_filename<\/code>\u3002<\/li>\n\n\n\n<li>\u6700\u597d\u5c06\u4e0a\u4f20\u7684\u6587\u4ef6\u5b58\u50a8\u5728\u975e Web \u6839\u76ee\u5f55\uff0c\u6216\u901a\u8fc7 Nginx \u4e13\u95e8\u670d\u52a1\u9759\u6001\u6587\u4ef6\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4e0d\u8981\u786c\u7f16\u7801\u9a8c\u8bc1\u903b\u8f91<\/strong>\uff1a\u5c06\u9a8c\u8bc1\u89c4\u5219\u653e\u5728 <code>validators<\/code> \u5217\u8868\u4e2d\uff0c\u4fdd\u6301\u89c6\u56fe\u51fd\u6570\u5e72\u51c0\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u638c\u63e1\u4e86\u8868\u5355\u5904\u7406\uff0c\u4f60\u7684\u5e94\u7528\u5c31\u80fd\u771f\u6b63\u63a5\u6536\u7528\u6237\u8f93\u5165\u4e86\u3002\u63a5\u4e0b\u6765\uff0c\u4f60\u60f3\u5b66\u4e60\u5982\u4f55\u5c06\u8fd9\u4e9b\u6570\u636e<strong>\u6301\u4e45\u5316\u5b58\u50a8\u5230\u6570\u636e\u5e93 (Flask-SQLAlchemy)<\/strong>\uff0c\u8fd8\u662f\u5b66\u4e60\u5982\u4f55\u5b9e\u73b0<strong>\u7528\u6237\u767b\u5f55\u4f1a\u8bdd\u7ba1\u7406 (Flask-Login)<\/strong>\uff1f<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Web \u5f00\u53d1\u4e2d\uff0c\u8868\u5355\uff08Form\uff09 \u662f\u7528\u6237\u4e0e\u670d\u52a1\u5668\u4ea4\u4e92\u7684\u6838&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-175","post","type-post","status-publish","format-standard","hentry","category-flask-"],"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/175","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=175"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/175\/revisions"}],"predecessor-version":[{"id":176,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/175\/revisions\/176"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=175"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}