看日志希望带有彩色，希望从浏览器上看到，不用连到机器上看。

 浏览系统的文件夹，scan + 系统文件夹的层级名字当做url路由，可以深层次看到机器上任何层级的文件夹，实现系统文件夹浏览下载。

如果是点击文件夹进入子目录。

如果是点击文件，尝试以文本格式读取文件，并以实时更新的方式显示到浏览器日志控制台并加彩。 主要是要做到不遗漏推送日志和不重复推送日志，采用的是python 操作文件的seek和tell。

 

浏览系统目录和下载文件的页面

 

 

 

 

查看实时日志更新的页面，提供了暂停功能和自动下拉功能。把日志根据级别加了彩色，更容易观察哪些是严重的，哪些是debug的。

 

 

实现代码。

# -*- coding: utf-8 -*-# @Author  : ydf# @Time    : 2019/6/14 17:33import osfrom pathlib import Pathfrom flask import Flask, send_from_directory, url_for, jsonify, request, render_template, current_app, abort, g, send_filefrom flask_httpauth import HTTPBasicAuthfrom flask_bootstrap import Bootstrapfrom app.utils_ydf import LogManager, nb_print, time_utilprint(str((Path(__file__).parent / Path('ydf_dir')).absolute()))app = Flask(__name__, template_folder=str((Path(__file__).parent / Path('ydf_dir')).absolute()))app.config['JSON_AS_ASCII'] = Falseapp.config['REFRESH_MSEC'] = 1000auth = HTTPBasicAuth()LogManager(app.logger.name).get_logger_and_add_handlers()bootstrap = Bootstrap(app)@app.route('/favicon.ico')def favicon():    print(Path(__file__).parent / Path('ydf_dir/').absolute())    return send_from_directory(str(Path(__file__).parent / Path('ydf_dir/').absolute()),                               'log_favicon.ico', mimetype='image/vnd.microsoft.icon')@app.route("/ajax0/
     
      /")def info0(fullname):    fullname = f'/{fullname}'    position = int(request.args.get('position'))    current_app.logger.debug(position)    # if os.path.isfile(full_name):    #     fo = open(full_name,encoding='utf8')    #     content  = fo.read()    #     return content    # else :    #     return "There is no log file"    with open(fullname, 'rb') as f:        try:            if position == 0:                f.seek(-50000, 2)            else:                f.seek(position, 0)        except Exception:            current_app.logger.exception('读取错误')            f.seek(0, 0)        content_text = f.read().decode()        # nb_print([content_text])        content_text = content_text.replace('\n', '
      
')        # nb_print(content_text)        position_new = f.tell()        current_app.logger.debug(position_new)        # nb_print(len(content_text))        return jsonify(content_text=content_text, position=position_new)@app.route("/ajax/
      
       /")def info(fullname):    fullname = f'/{fullname}'    position = int(request.args.get('position'))    current_app.logger.debug(position)    # if os.path.isfile(full_name):    #     fo = open(full_name,encoding='utf8')    #     content  = fo.read()    #     return content    # else :    #     return "There is no log file"    with open(fullname, 'rb') as f:        try:            if position == 0:                f.seek(-50000, 2)            else:                f.seek(position, 0)        except Exception:            current_app.logger.exception('读取错误')            f.seek(0, 0)        lines = f.readlines()        content_text = ''        for line in lines:            line = line.strip().decode()            if '- DEBUG -' in line:                color = '#00FF00'            elif '- INFO -' in line:                color = '#00FFFF'            elif '- WARNING -' in line:                color = 'yellow'            elif '- ERROR -' in line:                color = '#FF00FF'            elif '- CRITICAL -' in line:                color = '#FF0033'            else:                color = ''            content_text += f'
       
 {line} 
'        # content_text = f.read().decode()        # # nb_print([content_text])        # content_text = content_text.replace('\n', '
       
')        # # nb_print(content_text)        position_new = f.tell()        current_app.logger.debug(position_new)        # nb_print(content_text)        return jsonify(content_text=content_text, position=position_new)@app.route("/view/
       
        ")def view(fullname):    view_html = '''            
            
                    
        
    
        
    
         自动滚动浏览器滚动条          
        
         ON
        
    
         运行中     
         下载 %s        
                '''    # return view_html % (logfilename,logfilename,logfilename,logfilename,logfilename, REFRESH_MSEC, REFRESH_MSEC)    return render_template('/log_view_html.html', fullname=fullname)@app.route('/download/
        
         ', )def download_file(fullname):    current_app.logger.debug(fullname)    return send_file(f'/{fullname}')    # return send_from_directory(f'/{logs_dir}',    #                            filename, as_attachment=True, )@app.route('/scan/', )@app.route('/scan/
         
          ', )def index(logs_dir=''):    current_app.logger.debug(logs_dir)    file_ele_list = list()    dir_ele_list = list()    for f in (Path('/') / Path(logs_dir)).iterdir():        fullname = str(f).replace('\\', '/')        if f.is_file():            # current_app.logger.debug(str(f).replace('\\', '/')[1:])            # current_app.logger.debug((logs_dir, str(f).replace('\\','/')[1:]))            current_app.logger.debug(str(f))            current_app.logger.debug(url_for('download_file', fullname=fullname[0:]))            # current_app.logger.debug(url_for('download_file', logs_dir='', filename='windows_to_linux_syn_config.json'))            file_ele_list.append({
   'is_dir': 0, 'filesize': os.path.getsize(f) / 1000000,                                  'last_modify_time': time_util.DatetimeConverter(os.stat(str(fullname)).st_mtime).datetime_str,                                  'url': url_for('view', fullname=fullname[1:]), 'download_url': url_for('download_file', fullname=fullname[1:]), 'fullname': fullname})        if f.is_dir():            fullname = str(f).replace('\\', '/')            dir_ele_list.append({
    'is_dir': 1, 'filesize': 0,                                 'last_modify_time': time_util.DatetimeConverter(os.stat(str(f)).st_mtime).datetime_str, 'url': url_for('index', logs_dir=fullname[1:]), 'download_url': url_for('index', logs_dir=fullname[1:]), 'fullname': fullname})    return render_template('dir_view.html', ele_list=dir_ele_list + file_ele_list, logs_dir=logs_dir)@app.template_filter()def file_filter(filefullname, file_name_part):    if file_name_part == 1:        return str(Path(filefullname).parent)    if file_name_part == 2:        return str(Path(filefullname).name)@app.context_processordef dir_processor():    def format_logs_dir_to_multi(logs_dir):        parent_dir_list = list()        pa = Path(f'/{logs_dir}')        while True:            nb_print(pa.as_posix())            parent_dir_list.append({
    'url': url_for('index', logs_dir=pa.as_posix()[1:]), 'dir_name': pa.name[:]})            pa = pa.parent            if pa == Path('/'):                parent_dir_list.append({
    'url': url_for('index', logs_dir=''), 'dir_name': '根目录'})                break        nb_print(parent_dir_list)        return parent_dir_list    return dict(format_logs_dir_to_multi=format_logs_dir_to_multi)@auth.verify_passworddef verify_password(username, password):    if username == 'user' and password == 'mtfy123':        return True    return False@app.before_request@auth.login_requireddef before_request():    passif __name__ == "__main__":    # main()    print(app.url_map)    app.run(host="0.0.0.0", port=8888, threaded=True, )
         
        
       
      
     

 

dir_view.html

{% extends 'bootstrap/base.html' %}​{
    % block title %} {
   { logs_dir }} {% endblock %}{
    % block scripts %}    {
    { super() }}    {
    % endblock %}{
    % block content %}          
     
        
      常用文件夹        
      pythonlogs/        
      data/supervisorout/        
      
                   {
    #  
 #}            
                    {
    % for ele in ele_list %}                {
    % if ele.is_dir %}                    
                                 {
    % else %}                    
                         {
    % endif %}            
            {
    % endfor %}            
       
         / {
    { logs_dir }} 的文件浏览
       
       
          {% for dir_item in format_logs_dir_to_multi(logs_dir)|reverse %}                /
          {
   { dir_item.dir_name }}            {
    % endfor %}                 的文件浏览            
       
                   
                    
                         
                    名称                
                         
                    最后修改时间                
                         
                    文件大小                
                         
下载文件
                    
                   
                   
        
        
        
         
{ { ele.fullname | file_filter(2) }}
                     
{
   { ele.last_modify_time }}
                     
{
   { ele.filesize }} M
                     
下载 { { ele.fullname | file_filter(2) }}
                    
       
              
    
     
{
    % endblock %}

 

log_view.html

    
             
     
     
 自动滚动浏览器滚动条 
     
      ON
     
 运行中下载 {
   { fullname|  file_filter(2) }}