flask之文件管理系统-项目 JRP上线啦!!! ---修订版,兼容Windows和Linux系统

上一章的版本https://blog.csdn.net/weixin_44517278/article/details/135275066,在Windows下debug完成无异常后,上传到我的树莓下开始正式服役
由于开发环境是Windows,使用环境是Linux,导致最后没能成功运行起来
这个版本是今天去debug完成了,目前是Windows/Linux都能运行
问题点一:

# 运行出现这个报错
#  ERROR in app: Exception on /favicon.ico [GET]

# 解法:
# 添加 favicon.ico 请求的处理
self.app.route('/favicon.ico', methods=['GET'])(self.ignore_favicon)

def ignore_favicon(self):
    # 忽略 /favicon.ico 请求,返回 404
    return abort(404)

问题点二:

# 路径问题:
# 发现返回的文件夹路径没有 根目录 ‘/’

# 解法:
# 添加 path:    让返回是路径
 self.app.route('/download/')(self.download_file)
 self.app.route('/show_folder/')(self.show_folder)
 self.app.route('/return_folder/')(self.return_folder)

# 判断假设没有根目录,且不是Windows的文件路径结构,就添加一个 / 在左边
 if not file_name.startswith('/'):
     if not re.match('.:', file_name):
         file_name = '/' + file_name

问题点三:

# 额外发现原本埋的Bug,在返回超两层目录时,路径有问题,修改完以后成下面这样
                    if folder_name == ".":
                        folder_name = ""
                    else:
                        # 点击返回两次会报错,发现这里有问题,加上下面这句不全folder_name路径
                        # 不能直接放在判断句外面,否则进到初始目录,还会显示返回链接,点击会报错
                        folder_name = os.path.join(FileManagementApp.gDataPath, folder_name)

额外增加了上传路径可以自己选择的功能

以下是python源码和HTML模版 index.html

from flask import Flask, render_template, send_file, request, abort
import os, re


# 定义类
class FileManagementApp:
    # 定义类变量,这里是放数据库根目录,我这里就是我树莓派系统上的存储盘挂载位置
    gDataPath = os.path.normpath("/data/HOME_NAS/mydata")

    def __init__(self):
        self.app = Flask(__name__)
        self.app.config['UPLOAD_FOLDER'] = ''
        # 添加basename方法,让HTML中使用 路径|basename 输出结果是路径文件夹名或文件名而不是完整路径
        self.app.add_template_filter(self.basename)

        # 把所有下面函数定义的路由集中到这里,清晰明了
        self.app.route('/')(self.mainweb)
        self.app.route('/')(self.index)
        self.app.route('/download/')(self.download_file)
        self.app.route('/show_folder/')(self.show_folder)
        self.app.route('/return_folder/')(self.return_folder)
        self.app.route('/upload', methods=['POST'])(self.upload_file)
        self.app.route('/search', methods=['POST'])(self.search_file)
        # linux BUG-1 : ERROR in app: Exception on /favicon.ico [GET]
        # 添加 favicon.ico 请求的处理
        self.app.route('/favicon.ico', methods=['GET'])(self.ignore_favicon)


    def basename(self, value):
        return os.path.basename(value)

    # 主页面,show_main=True控制让它显示在html中,避免HTML中所有模块都显示在网页中,默认是关闭的,参考HTML模版
    def mainweb(self):
        return render_template('index.html',
                            show_main=True,
                            show_upload=False
                            )

    # 根据mainweb页面用户点击后的返回,跳转到不同的页面,show_xxx=True 则是打开显示不同的模块,其余不显示
    def index(self, show_item):
        if show_item == "show_list":
            files, folder_names, folder_name = self.getfile()
            return render_template('index.html',
                                files=files,
                                folder_names=folder_names,
                                folder_name=folder_name,
                                show_list=True
                                )
        elif show_item == "show_search":
            # files, folder_names, folder_name = self.getfile()
            files, folder_names, folder_name = [], [], ""
            return render_template('index.html',
                                files=files,
                                folder_names=folder_names,
                                folder_name=folder_name,
                                show_search=True
                                )
        elif show_item == "show_upload":
            files, folder_names, folder_name = self.getfile()
            return render_template('index.html',
                                files=files,
                                folder_names=folder_names,
                                folder_name=folder_name,
                                show_upload=True,
                                show_list=True
                                )

    # 下载文件
    def download_file(self, file_name):
        # 替换windows系统路径 \\为 /,即兼容不同系统的路径
        file_name = os.path.normpath(file_name)
        # Linux Bug-1  add /
        if not file_name.startswith('/'):
            if not re.match('.:', file_name):
                file_name = '/' + file_name
        # 将选择的文件下载下来
        return send_file(file_name, as_attachment=True)

    # 显示当前路径下所有的文件夹和文件,不包含子目录下的
    def show_folder(self, folder_name=""):
        # Linux Bug-1  add /
        # Linux Bug-1  add /
        if not folder_name.startswith('/'):
            if not re.match('.:', folder_name):
                folder_name = '/' + folder_name
        files, folder_names, folder_name = self.getfile(folder_name)
        return render_template('index.html',
                               files=files,
                               folder_names=folder_names,
                               folder_name=folder_name,
                               show_list=True
                               )

    # 返回上级目录
    def return_folder(self, folder_name):
        # Linux Bug-1  add /
        if not folder_name.startswith('/'):
            if not re.match('.:', folder_name):
                folder_name = '/' + folder_name
        refolder = folder_name
        full_path = os.path.join(FileManagementApp.gDataPath, refolder)
        for root, dirs, files in os.walk(FileManagementApp.gDataPath, topdown=True):
            for dir in dirs:
                if os.path.join(root, dir) == full_path:
                    folder_name = os.path.relpath(root, start=FileManagementApp.gDataPath)
                    print(folder_name)
                    if folder_name == ".":
                        folder_name = ""
                    else:
                        # 点击返回两次会报错,发现这里有问题,加上下面这句不全folder_name路径
                        # 不能直接放在判断句外面,否则进到初始目录,还会显示返回链接,点击会报错
                        folder_name = os.path.join(FileManagementApp.gDataPath, folder_name)

                    files, folder_names, folder_name = self.getfile(folder_name)
                    return render_template('index.html',
                                           files=files,
                                           folder_names=folder_names,
                                           folder_name=folder_name,
                                           show_list=True
                                           )

    # 抓取指定路径下所有的文件,文件夹(不包含子文件夹下的内容)
    def getfile(self, folder_name=""):
        files = []
        folder_names = []
        full_path = os.path.join(FileManagementApp.gDataPath, folder_name)
        fileList = os.listdir(full_path)
        for file in fileList:
            file = os.path.join(full_path, file)
            file = os.path.normpath(file)
            if os.path.isfile(file):
                files.append(file)
            else:
                folder_names.append(file)
        return files, folder_names, folder_name

    # 上传文件,上传的路径就是现在进到的路径,不允许在网页创建新的目录文件夹
    def upload_file(self):
        # 读取网页返回的值
        file = request.files['file']
        folder_name = request.form['folder_name']
        UPLOAD_FOLDER = os.path.join(FileManagementApp.gDataPath, folder_name)
        self.app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER

        if 'file' not in request.files:
            return 'No file part'
        file = request.files['file']

        if file.filename == '':
            return 'No selected file'
        # 将文件保存到指定路径下
        file.save(os.path.join(self.app.config['UPLOAD_FOLDER'], file.filename))
        files, folder_names, folder_name = self.getfile(folder_name)
        # 维持在这个上传文件的路径
        return render_template('index.html',
                               files=files,
                               folder_names=folder_names,
                               folder_name=folder_name,
                               show_list=True
                               )
    # 查找文件
    def search_file(self):
        sfile_result = []
        sfolder_result = []
        # keyword = request.text['keyword']  ## error
        keyword = request.form.get('keyword', '')  # 获取名为 'keyword' 的表单字段的值
        if keyword == "":
            pass
        else:
            files, folder_names = self.perform_search_file()

            for file in files:
                if keyword in file:
                    sfile_result.append(file)
            for sfolder in folder_names:
                if keyword in sfolder:
                    sfolder_result.append(sfolder)
        return render_template('index.html',
                               files=sfile_result,
                               folder_names=sfolder_result,
                               folder_name="",
                               show_search=True,
                               show_upload=False
                               )

    # 执行搜索的功能,遍历存储路径下所有的文件,看是否有包含关键字的文件并返回
    def perform_search_file(self):
        file_result = []
        folder_result = []
        for root, dirs, files in os.walk(FileManagementApp.gDataPath, topdown=True):
            for file in files:
                full_path = os.path.join(root, file)
                full_path = os.path.normpath(full_path)
                file_result.append(full_path)
            for dir in dirs:
                full_path = os.path.join(root, dir)
                full_path = os.path.normpath(full_path)
                folder_result.append(full_path)
        return file_result, folder_result

    # soltion BUG-1:
    def ignore_favicon(self):
        # 忽略 /favicon.ico 请求,返回 404
        return abort(404)

    # 运行服务
    def run(self):
        self.app.run(host='0.0.0.0', port=5000)

if __name__ == '__main__':
    # 实例化并开始执行
    file_app = FileManagementApp()
    file_app.run()
DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Folder Viewertitle>

    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 20px;
        }

        h1 {
            color: #333;
        }

        p {
            margin-bottom: 10px;
        }

        form {
            margin-bottom: 20px;
        }

        ul {
            list-style: none;
            padding: 0;
        }

        li {
            margin-bottom: 5px;
        }

        a {
            text-decoration: none;
            color: #007BFF;
        }
        a:link {color:#110101;}      /* 未访问链接*/
        a:visited {color:#00FF00;}  /* 已访问链接 */
        a:hover {color:#FF00FF;}  /* 鼠标移动到链接上 */
        a:active {color:#0000FF;}  /* 鼠标点击时 */
        h2 {
            margin-top: 20px;
            color: #333;
        }
    style>
head>
<body>


{% if show_main|default(false) %}

<h1>欢迎进入JRP系统主页h1>
<h1>当前版本 1.1.2023.12.29h1>
<h1>作者:零时搞学习h1>
<h1>h1>

    <li><a href="{{ url_for('index', show_item='show_upload') }}">上传a>li>
    <li><a href="{{ url_for('index', show_item='show_list') }}">浏览a>li>
    <li><a href="{{ url_for('index', show_item='show_search') }}">搜索a>li>
{% endif %}

{% if show_upload|default(true) %}
    <form method="post" enctype="multipart/form-data" action="/upload">
        <input type="file" name="file">
        
        <input type="hidden" name="folder_name" value="{{ folder_name }}">
        <input type="submit" value="Upload">
    form>
{% endif %}

{% if show_search|default(false) %}
    <li><a href="{{ url_for('mainweb') }}">首页a>li>
    <h1>文件搜索h1>
    <form action="/search" method="post">
        <input type="text" name="keyword" placeholder="输入关键字">
        <button type="submit">搜索button>
    form>
    <ul>
        <h2>搜索结果h2>
        <h2>文件夹:h2>
        {% for foldername in folder_names %}
            <li><a href="{{ url_for('search_file', folder_name=foldername) }}">{{ foldername|basename }}a>li>
        {% endfor %}

        <h2>文件:h2>
        {% for filename in files %}
            <li><a href="{{ url_for('download_file', file_name=filename) }}" download>{{ filename|basename }}a>li>
        {% endfor %}
    ul>
{% endif %}

{% if show_list|default(false) %}
    <li><a href="{{ url_for('mainweb') }}">首页a>li>
    <h1>文件下载列表h1>
    
    {% if folder_name == "" %}
        <p>当前路径:p>
    {% else %}
        <p>当前路径:p>
        <li><a href="{{ url_for('return_folder', folder_name=folder_name) }}">返回:{{ folder_name|basename }}a>li>
    {% endif %}
    <ul>
        <h2>文件夹:h2>
        {% for foldername in folder_names %}
            <li><a href="{{ url_for('show_folder', folder_name=foldername) }}">{{ foldername|basename }}a>li>
        {% endfor %}

        <h2>文件:h2>
        {% for filename in files %}
            <li><a href="{{ url_for('download_file', file_name=filename) }}" download>{{ filename|basename }}a>li>
        {% endfor %}
    ul>
{% endif %}
body>
html>

承接上文,在这个页面:
点击文件夹进入子文件夹下,并显示这个文件夹下的资料,点击文件可以直接下载:
flask之文件管理系统-项目 JRP上线啦!!! ---修订版,兼容Windows和Linux系统_第1张图片
进入新路径结果如下,点击返回可以返回上级目录:
flask之文件管理系统-项目 JRP上线啦!!! ---修订版,兼容Windows和Linux系统_第2张图片
然后这个颜色,靠这个设定:

        a:link {color:#110101;}      /* 未访问链接*/
        a:visited {color:#00FF00;}  /* 已访问链接 */
        a:hover {color:#FF00FF;}  /* 鼠标移动到链接上 */
        a:active {color:#0000FF;}  /* 鼠标点击时 */

新增的选择路径上传功能:
当前路径下上传的文件就在这个文件夹下,之前是放在默认存储路径下
flask之文件管理系统-项目 JRP上线啦!!! ---修订版,兼容Windows和Linux系统_第3张图片

如此,现在算是正常上线了

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