吾爱破解贴子地址：https://www.52pojie.cn/thread-1374014-1-1.html

包涵的知识点：

• selenium需要的webdriver的选型
• 配置webdriver环境变量
• winform操作html标签与执行javaScript代码
• 使用Task、委托更新UI线程

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using HZH_Controls.Forms;
using HZH_Controls.Controls;
using OpenQA.Selenium;
using OpenQA.Selenium.Edge;
using System.IO;
using System.Net;
using System.Threading;
 
namespace BabyMusicDownloader
{
    public partial class Form1 : FrmWithTitle
    {
        public Form1()
        {
            InitializeComponent();
            m_SyncContext = SynchronizationContext.Current;
            this.Title = "【吾爱破解论坛】 MusicDownloadApp - by Pojie1999.0909";
            this.IsShowCloseBtn = true;
 
            List<DataGridViewColumnEntity> lstCulumns = new List<DataGridViewColumnEntity>();
            lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Title", HeadText = "标题", Width = 40, WidthType = SizeType.Percent });
            lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Href", HeadText = "链接", Width = 40, WidthType = SizeType.Percent });
            lstCulumns.Add(new DataGridViewColumnEntity()
            {
                DataField = "State",
                HeadText = "状态",
                Width = 20,
                WidthType = SizeType.Percent,
                Format = (a) => { return Convert.ToInt32(a) == 0 ? "等待下载" : Convert.ToInt32(a) == 1 ? "下载完成" : "歌曲已存在"; }
            });
            this.ucDataGridView1.Columns = lstCulumns;
            this.ucDataGridView1.IsShowCheckBox = true;
        }
 
        private void ucBtnExt1_BtnClick(object sender, EventArgs e)
        {
            lstSource.Clear();
            driver.Navigate().GoToUrl(ucTextBoxEx1.InputText);
            IWebElement table = driver.FindElement(By.ClassName("list_musiclist"));
            IList<IWebElement> redlines = table.FindElements(By.ClassName("redline"));
            foreach (IWebElement item in redlines)
            {
                string song = item.FindElement(By.TagName("a")).Text;
                lstSource.Add(new SongObj { Title = song + ".mp4", Href = item.FindElement(By.TagName("a")).GetAttribute("href"), State = "0" });
            }
            ucDataGridView1.DataSource = lstSource;
        }
 
        private void ucBtnExt2_BtnClick(object sender, EventArgs e)
        {
            Task.Run(() =>
            {
                ThreadProcSafePost();
            });
        }
 
        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            driver.Close();
            driver.Quit();
        }
 
        private void ThreadProcSafePost()
        {
            if (ucDataGridView1.SelectRows.Count < 1)
            {
                FrmDialog.ShowDialog(this, "请选择至少一条记录！", "提示");
            }
            else
            {
                foreach (var item in ucDataGridView1.SelectRows)
                {
                    string title = ((SongObj)item.DataSource).Title;
                    string href = ((SongObj)item.DataSource).Href;
                    driver.Navigate().GoToUrl(href);
                    IJavaScriptExecutor js = (IJavaScriptExecutor)driver;
                    string truthUrl = js.ExecuteScript("return playurl2").ToString();
                    string fileName = rootPath + title;
                    if (!File.Exists(fileName))
                    {
                        WebClient client = new WebClient();
                        client.DownloadFile(truthUrl, fileName);
                        lstSource.Where(x => x.Title == title && x.Href == href).ToList()[0].State = "1";
                    }
                    else
                    {
                        lstSource.Where(x => x.Title == title && x.Href == href).ToList()[0].State = "2";
                    }
                    m_SyncContext.Post(SetDataGridViewSafePost, null);
                }
            }
        }
 
        private void SetDataGridViewSafePost(object state)
        {
            this.ucDataGridView1.ReloadSource();
        }
 
        IWebDriver driver = new EdgeDriver();
        const string domain = "http://www.abc.com/";
        const string rootPath = @"D:\";
        List<SongObj> lstSource = new List<SongObj>();
        SynchronizationContext m_SyncContext = null;
 
    }
 
    public class SongObj
    {
        public string Title { get; set; }
        public string Href { get; set; }
        public string State { get; set; }
    }
}