03-27 06:37 阅读 183

bootstrap+flask写登录页面

flask是一个很小巧很方便的webframe，之前一直用django现在用尝试用flask感觉不错，准备用这个框架开发新的平台，首先就要有用户登录页面，用flask可以这样实现：

run.py

static

templates

前端就用bootstrap展示,login.html

<!DOCTYPE html><html lang="en">
  <head>
    <meta charset="utf-8">
    <title>Welcome to login!</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="">
    <meta name="author" content="">

    <!-- Le styles -->
    <link href="{{ url_for('static', filename='css/bootstrap.css') }}" rel="stylesheet">
    <style type="text/css">
      body {
        padding-top: 40px;
        padding-bottom: 40px;
        background-color: #f5f5f5;
      }

      .form-signin {
        max-width: 300px;
        padding: 19px 29px 29px;
        margin: 0 auto 20px;
        background-color: #fff;
        border: 1px solid #e5e5e5;
        -webkit-border-radius: 5px;
           -moz-border-radius: 5px;
                border-radius: 5px;
        -webkit-box-shadow: 0 1px 2px rgba(0,0,0,.05);
           -moz-box-shadow: 0 1px 2px rgba(0,0,0,.05);
                box-shadow: 0 1px 2px rgba(0,0,0,.05);
      }
      .form-signin .form-signin-heading,
      .form-signin .checkbox {
        margin-bottom: 10px;
      }
      .form-signin input[type="text"],
      .form-signin input[type="password"] {
        font-size: 16px;
        height: auto;
        margin-bottom: 15px;
        padding: 7px 9px;
      }

    </style>
    <link href="{{ url_for('static', filename='css/bootstrap-responsive.css') }}" rel="stylesheet">

    <!-- HTML5 shim, for IE6-8 support of HTML5 elements -->
    <!--[if lt IE 9]>
      <script src="../assets/js/html5shiv.js"></script>
    <![endif]-->

    <!-- Fav and touch icons -->
    <link rel="apple-touch-icon-precomposed" sizes="144x144" href="{{ url_for('static', filename='ico/apple-touch-icon-144-precomposed.png') }}">
    <link rel="apple-touch-icon-precomposed" sizes="114x114" href="{{ url_for('static', filename='ico/apple-touch-icon-114-precomposed.png') }}">
      <link rel="apple-touch-icon-precomposed" sizes="72x72" href="{{ url_for('static', filename='ico/apple-touch-icon-72-precomposed.png') }}">
                    <link rel="apple-touch-icon-precomposed" href="{{ url_for('static', filename='ico/apple-touch-icon-57-precomposed.png') }}">
                                   <link rel="shortcut icon" href="{{ url_for('static', filename='ico/favicon.png') }}">
  </head>

  <body>

    <div class="container">

      <form action="" method="post" class="form-signin">
        <h2 class="form-signin-heading">Login</h2>

     <input type="text" name="username" value="`request`.`form`.`username`"  class="input-block-level" placeholder="username">


        <input type="password" name="password" class="input-block-level" placeholder="password">
        <label class="checkbox">


          <input type="checkbox" value="remember-me"> Remember me        </label>
        <button class="btn btn-primary" type="submit" value="Login" >Login</button>
      </form>

    </div> <!-- /container -->

    <!-- Le javascript
    ================================================== -->
    <!-- Placed at the end of the document so the pages load faster -->
    <script src="{{ url_for('static', filename='js/bootstrap-transition.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-alert.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-modal.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-dropdown.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-scrollspy.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-tab.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-tooltip.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-popover.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-button.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-collapse.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-carousel.js') }}"></script>
    <script src="{{ url_for('static', filename='js/bootstrap-typeahead.js') }}"></script>

  </body></html>

run.py

from flask import * app = Flask(__name__)@app.route("/login",methods=['POST','GET'])def login():
    	error = None
	if request.method == 'POST':
		if request.form['username'] != 'admin' or request.form['password'] != 'admin123': 
	        	error= "sorry"
		else:
			return redirect(url_for('index'))
	return render_template('login.html',error=error)@app.route("/index")def index():
	return render_template('index.html')if __name__ == "__main__":
    app.run(
	    host="0.0.0.0", 
	    port=80, 
	    debug=True)

启动 python run.py，访问http://192.168.118.137/login

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