c#查找PHP变量从URL代码 - C# Find PHP Variable from URL Code

C# Find PHP Variable from URL Code

本文关键字：URL 代码变量查找 PHP | 更新日期: 2023-09-27

在c#中，我想从URL代码中找到一个PHP变量
示例:我想从www.domain.com/file.php?var=text中找出text
这样做的主要原因是我想解析
的输出youtube.com/get_video_info?video_id=或System.IO.Path.GetTempPath() + @"'tempytinfo.txt"，格式为:
?var=value&var2=value&var3=value&…

我的努力试图找出这个坐在谷歌，调试其他答案，要么不工作，要么只是不是我要找的，这是我迄今为止的努力(也在第一个awnser的帮助下):

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net;
        namespace ConsoleApplication2
        {
            class Program
            {
                static void Main(string[] args)
                {
                    Console.WriteLine("Paste A YouTube URL/URI to Download:");
                    string yturlstr = Console.ReadLine();
                    Uri yturl = new Uri(yturlstr);
                    Console.WriteLine("Finding ID in YouTube URL...");
                    string ytid = yturlstr.Split('?')[1];
                    ytid = ytid.Replace("v=", "");
                    Console.WriteLine("Found Watch ID.");
                    Console.WriteLine("The " + '"' + "Watch ID" + '"' + " is " + ytid);
                    Console.WriteLine("Getting Video Info...");
                    Download("http://youtube.com/get_video_info?video_id=" + ytid, System.IO.Path.GetTempPath() + @"'tempytinfo.txt");
                    Console.WriteLine("Got Info.");
                    Console.WriteLine("Reading Video Info...");
                    string viddata = System.IO.File.ReadAllText(System.IO.Path.GetTempPath() + @"'tempytinfo.txt");
                    Console.WriteLine("Parsing Video Info...");
                    Dictionary<string, string> videodata = new Dictionary<string, string>();
                    string vdt = viddata;
                    string[] vdata = vdt.Split('&');
                    foreach (char param in vdt)
                    {
                        string[] paramParts = char.ToString(param).Split('=');
                        videodata.Add(paramParts[0], paramParts[1]);
                    }
                    string uefsm = WebUtility.UrlDecode(videodata["url_encoded_fmt_stream_map"]);
                    Dictionary<string, string> videosubdata = new Dictionary<string, string>();
                    string[] vsdata = uefsm.Split('&');
                    foreach (char param2 in uefsm)
                    {
                        string[] paramParts2 = char.ToString(param2).Split('=');
                        videosubdata.Add(paramParts2[0], paramParts2[1]);
                    }
                    Uri downloadlink = new Uri(WebUtility.UrlDecode(videosubdata["url"]));
                    Console.WriteLine("Download Link: " + '"' + downloadlink + '"');
                    Console.ReadKey();
               }
               private static void Download(string URL, string WhereToDownload)
               {
                    var client = new WebClient();
                    Uri downloadurl = new Uri(URL);
                    client.DownloadFile(downloadurl, WhereToDownload);
                }
            }
        }

，我的错误是:

An unhandled exception of type 'System.IndexOutOfRangeException' occurred in ConsoleApplication2.exe

Additional information: Index was outside the bounds of the array.

我会解析所有参数并将它们存储在一个集合中以便于访问它们。假设您在yturl中有URL，就像您在代码中所做的那样，您可以创建集合:

Dictionary<string, string> parameters = new Dictionary<string, string>();
string tmpStr = yturl.Split('?')[1];
string[] params = tmpStr.Split('&');
foreach (string param in params) 
{
    string[] paramParts = param.Split('=');
    parameters.Add(paramParts[0], paramParts[1]); 
}

然后像你的例子一样，用:

获取"text"

string var = parameters["var"];
// var == "text"

和其他参数的名称:

string var1 = parameters["var1"];
string var2 = parameters["var2"];