开始Flask项目

Posted 2020-10-13 L文斌

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新建Flask项目。
设置调试模式。
理解Flask项目主程序。
使用装饰器，设置路径与函数之间的关系。
使用Flask中render_template，用不同的路径，返回首页、登录员、注册页。
用视图函数反转得到URL，url_for(‘login’)，完成导航里的链接。

py文件：

from flask import Flask,render_template

app = Flask(__name__)


@app.route(\'/\')
def daohang():
    return render_template(\'daohang.html\')

@app.route(\'/lin/\')
def lin():
    return \'lin\'

@app.route(\'/denglu/\')
def denglu():
    return render_template(\'denglu.html\')

@app.route(\'/zhuce/\')
def zhuce():
    return render_template(\'zhuce.html\')


if __name__ == \'__main__\':
    app.run(debug=True)

daohang.css

img {
    width: 400px; /*设置图片的大小*/
}

div.sa {
    border-style: solid; /*设置边距线条格式*/
    border-width: 5px; /*设置边距线条大小*/
    border-color: gold; /*设置边距线条颜色*/
    width: 400px; /*盒子大小*/
    float: left; /*向左浮动*/
    margin: 5px; /*设置外边距*/
}

div.sa img {
    width: 100%; /*设置盒子内容的缩放*/
    heigh: aute; /*aute是自动对齐格式*/
}

div.st {
    text-align: center;
    padding: 2px; /*设置内边距*/
}

div.sa:hover {
    border-style: solid;
    border-width: 5px;
    border-color: green;
}  /*设置鼠标经过时产生的变化*/

denglu.css:

#container{width: 400px}
#header{background-color: coral}
#content{background-color: aquamarine}
#footer{background-color: coral}

daohang.js

function mySwitch() {
    var oBody = document.getElementById("mybody");
    var oOnoff = document.getElementById("myonoff");
    if (oOnoff.src.match("bulbon")) {
        oOnoff.src = "http://www.runoob.com/images/pic_bulboff.gif";
        oBody.style.background = "black";
        oBody.style.color = "yellow"
    } else {
        oOnoff.src = "http://www.runoob.com/images/pic_bulbon.gif";
        oBody.style.background = "white";
        oBody.style.color = "black"
    }
}
// match()如果检验到括号里的内容就做以下变动

denglu.js

function fnLogin() {
    var uSer = document.getElementById("user");
    var pAss = document.getElementById("pass");
    var oError = document.getElementById("error_box");

    oError.innerHTML = "<br>";

    // 验证用户名
    if (uSer.value.length < 6 || uSer.value.length > 20) {
        oError.innerHTML = "用户名只能6-20位";
        return
    } else if ((uSer.value.charCodeAt(0) >= 48) && (uSer.value.charCodeAt(0) <= 57)) {
        oError.innerHTML = "用户名首字母不能是数字";
        return
    } else for (var i = 0; i < uSer.value.length; i++) {
        if ((uSer.value.charCodeAt(i) < 48) || (uSer.value.charCodeAt(i) > 57) && (uSer.value.charCodeAt(i) < 97) || (uSer.value.charCodeAt(i) > 122)) {
            oError.innerHTML = "用户名只能由数字和字母组成";
            return
        }
    }

    // 验证密码
    if (pAss.value.length < 6 || pAss.value.length > 20) {
        oError.innerHTML = "密码只能6-20位";
        return
    }
    // 验证弹框
    window.alert("登陆成功！")
}


function fnRegistration() {
    var uSer = document.getElementById("user");
    var pAss = document.getElementById("pass");
    var aGain = document.getElementById("again");
    var oError = document.getElementById("error_box");

    oError.innerHTML = "<br>";

    // 验证用户名
    if (uSer.value.length < 6 || uSer.value.length > 20) {
        oError.innerHTML = "用户名只能6-20位";
        return
    } else if ((uSer.value.charCodeAt(0) >= 48) && (uSer.value.charCodeAt(0) <= 57)) {
        oError.innerHTML = "用户名首字母不能是数字";
        return
    } else for (var i = 0; i < uSer.value.length; i++) {
        if ((uSer.value.charCodeAt(i) < 48) || (uSer.value.charCodeAt(i) > 57) && (uSer.value.charCodeAt(i) < 97) || (uSer.value.charCodeAt(i) > 122)) {
            oError.innerHTML = "用户名只能由数字和字母组成";
            return
        }
    }

    // 验证密码
    if (pAss.value.length < 6 || pAss.value.length > 20) {
        oError.innerHTML = "密码只能6-20位";
        return
    }

    // 验证再次输入的密码
    if (aGain.value != pAss.value) {
        oError.innerHTML = "密码不一致";
        return
    }
    // 验证弹框
    window.alert("注册成功！")
}

daohang.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>Bootstrap 实例 - 倒置的导航栏</title>
    <link rel="stylesheet" type="text/css" href="../static/css/daohang.css">
    <link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js"></script>
    <script src="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <script src="../static/js/daohang.js"></script>
</head>
<body id="mybody">

<nav class="navbar navbar-inverse" role="navigation">
    <div class="container-fluid">
        <div class="navbar-header">
            <a class="navbar-brand" href="#">首页</a>
        </div>
        <div>
            <ul class="nav navbar-nav">
                <li><a href="{{ url_for(\'denglu\') }}" onclick="">登陆</a></li>
                <li><a href="{{ url_for(\'zhuce\') }}" onclick="">注册</a></li>
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                        设置 <b class="caret"></b>
                    </a>
                    <ul class="dropdown-menu">
                        <li><a href="#">收藏</a></li>
                        <li><a href="#">分享</a></li>
                        <li><a href="#">搜索</a></li>
                        <li class="divider"></li>
                        <li><a href="#">点赞</a></li>
                    </ul>
                </li>
                <li><a href="#">||</a></li>
            </ul>
        </div>
        <div style="float: left">
            <img id="myonoff" onclick="mySwitch()" src="http://www.runoob.com/images/pic_bulbon.gif" style="width:40px" >
        </div>
        <div>
            <input type="text" name="user" id="user" placeholder="请输入内容">
            <input type="button" value="搜索" class="btn btn-success" onclick="">
        </div>
    </div>
</nav>

<nav class="navbar navbar-inverse navbar-fixed-bottom" role="navigation">
    <ul class="nav navbar-nav">
        <li><img src="http://www.gzcc.cn/2016/images/footer1-logo.png"></li>
        <li style="color: bisque;">版权所有@lin</li>
    </ul>
</nav>

<script>
    document.write(Date())
</script>
<div>
    <div class="sa">
        <a href="http://desk.zol.com.cn/"><img
                src="http://desk.fd.zol-img.com.cn/t_s1920x1080c5/g5/M00/0F/06/ChMkJlfI162IeK07AAY_egKaTWoAAU6qQHhDUcABj-S342.jpg"></a>
        <div class="st"><a href="http://desk.zol.com.cn/">爱宠大机密1</a></div>
    </div>
    <div class="sa">
        <a href="http://desk.zol.com.cn/"><img
                src="http://desk.fd.zol-img.com.cn/t_s1920x1080c5/g5/M00/0F/06/ChMkJlfI17KIHB_fAAMRJQRdoxQAAU6qQIhsoEAAxE9307.jpg"></a>
        <div class="st"><a href="http://desk.zol.com.cn/">爱宠大机密2</a></div>
    </div>
    <div class="sa">
        <a href="http://desk.zol.com.cn/"><img
                src="http://desk.fd.zol-img.com.cn/t_s1920x1080c5/g5/M00/0F/06/ChMkJlfI15yIFHF8AANwCMns-CoAAU6qQFNDZMAA3Ag386.jpg"></a>
        <div class="st"><a href="http://desk.zol.com.cn/">爱宠大机密3</a></div>
    </div>
    <div class="sa">
        <a href="http://desk.zol.com.cn/"><img
                src="http://desk.fd.zol-img.com.cn/t_s1920x1080c5/g5/M00/0F/06/ChMkJ1fI18uIPl4SAAH7nIUWw9wAAU6qQKoXZ4AAfu0026.jpg"></a>
        <div class="st"><a href="http://desk.zol.com.cn/">爱宠大机密4</a></div>
    </div>
</div>
</body>
</html>

denglu.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>练习</title>
    <link rel="stylesheet" type="text/css" href="../static/css/denglu.css">
    <script src="../static/js/denglu.js"></script>
</head>
<body>
<div id="container">
    <div id="header"><h2 align="center">请登录</h2></div>
    <div id="content">
        <form>
            Username：<input type="text" name="user" id="user" placeholder="请输入用户名">
            <br>
            Password：<input type="password" name="pass" id="pass" placeholder="请输入密码">
            <br>
            <input type="radio" name="r1" id="r1" value="stu">student
            <input type="radio" name="r2" id="r2" value="tea">teacher
            <br>
            <input type="checkbox" name="c1" id="c1" value="">记住我
            <br>
            <div id="error_box"><br></div>
            <input type="button" value="login" onclick="fnLogin()">&nbsp
            <button><a href="http://localhost:63342/untitled1/templates/lin2.html?_ijt=trea96c8krh54963ip8s1c8rso">registration</a>
            </button>
            &nbsp&nbsp&nbsp&nbsp<a href="">忘记密码？</a>

        </form>
    </div>
    <div id="footer"><p align="right">版权@lin</p></div>
</div>

</body>
</html>

zhuce.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>练习</title>
    <link rel="stylesheet" type="text/css" href="../static/css/denglu.css">
    <script src="../static/js/denglu.js"></script>
</head>
<body>
<div id="container">
    <div id="header"><h2 align="center">注册</h2></div>
    <div id="content">
        <form>
            <p align="center">Username：</p>
            <p align="center">
                <input type="text" name="user" id="user" placeholder="请输入用户名">
            </p>
            <p align="center">Password：</p>
            <p align="center">
                <input type="password" name="pass" id="pass" placeholder="请输入密码">
            </p>
            <p align="center">Lnput again：</p>
            <p align="center">
                <input type="password" name="again" id="again" placeholder="再次输入密码">
            </p>
            <p align="center">
                <input type="radio" name="r1" id="r1" value="stu">student
                <input type="radio" name="r2" id="r2" value="tea">teacher
            </p>
            <div id="error_box"><br></div>
            <p align="center">
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