每个web应用都需要使用表单来采集用户数据。现在让我们使用Flask框架创建一个简单的表单来收集用户的基本信息，例如名称、年龄、邮件、兴趣爱好等，我们将这个模板文件命名为bio_form.html

    1. <!DOCTYPE html><html>
    2. <head>
    3.     <title></title>
    4. </head>
    5. <body>
    6.     <h1>Bio Data Form</h1>
    7.     <form action="showbio">
    8.         <label>Username</label>
    9.         <input type="name" name="username"><br>
    10.         <label>Email</label>
    11.         <input type="email" name="email"><br>
    12.         <label>Hobbies</label>
    13.         <input type="name" name="hobbies"><br>
    14.         <input type="submit" name="">
    15.     </form>
    16. </body>
    17. </html>

    以及show_bio.html的内容：

    1. <!DOCTYPE html><html>
    2. <head>
    3.     <title>Bio-Data Details</title>
    4. </head>
    5. <body>
    6.     <h1>Bio-Data Details</h1>
    7.     <hr>
    8.     <h1>Username: {{ username }}</h1>
    9.     <h1>Email: {{ email }}</h1>
    10.     <h1>Hobbies: {{ hobbies }}</h1>
    11. </body>
    12. </html>

    源码文件如下：

    1. from flask import Flask, request, redirect, url_for, render_template
    3. app = Flask(__name__)
    5. @app.route('/form', methods=['POST', 'GET'])
    6. def bio_data_form():
    7.     if request.method == "POST":
    8.         username = request.form['username']
    9.         age = request.form['age']
    10.         email = request.form['email']
    11.         hobbies = request.form['hobbies']
    12.         return redirect(url_for('showbio',
    13.                                 username=username,
    14.                                 age=age,
    15.                                 email=email,
    16.                                 hobbies=hobbies))
    17.     return render_template("bio_form.html")
    19. @app.route('/showbio', methods=['GET'])
    20. def showbio():
    21.     username = request.args.get('username')
    22.     age = request.args.get('age')
    23.     email = request.args.get('email')
    24.     hobbies = request.args.get('hobbies')
    25.     return render_template("show_bio.html",
    26.                            username=username,
    27.                            age=age,
    28.                            email=email,
    29.                            hobbies=hobbies)
    31. if __name__ == "__main__":
    32.     app.run(debug=True, port=8080

    视图函数bio_data_form同时支持POST和GET请求。GET请求将渲染bio_form.html模板，而POST请求将重定向到showbio

    web访问表单页面如下：

    Untitled.gif