.NET C# 获取免费代理IP

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.NET C# 获取免费代理IP

66ip代理：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Text.RegularExpressions;
using System.Security.Policy;

namespace Proxy
{
    public partial class Form1 : Form
    {
        private static string StrUrl = "http://www.66ip.cn/mo.php?sxb=&tqsl=10&port=&export=&ktip=&sxa=&submit=%CC%E1++%C8%A1&textarea=";//实例化timer
        System.Timers.Timer t = new System.Timers.Timer();
        //定义委托变量
        public happy updateTxt_ok;
        public delegate void happy();

        public Form1()
        {
            InitializeComponent();

            //设定timer
            t.Interval = 100000; //定时，单位ms
            t.Enabled = true; //回调函数允许执行
            t.AutoReset = false; //回调函数循环执行
            t.Elapsed += new System.Timers.ElapsedEventHandler(theout); //到达时间的时候执行事件；
            t.Stop();
        }

        //timer事件
        public void theout(object source, System.Timers.ElapsedEventArgs e)
        {
            this.BeginInvoke(updateTxt_ok);//委托执行updateTxt_ok
        }

        //委托执行函数
        public void UpdateTxtMethod()
        {
            try
            {
                HtmlDocument html = this.webBrowser1.Document;
                string IpStr = html.Body.InnerText.Trim().Replace("\r\n", ";");
                DBA.SqlDbAccess.ExecNoQuery(CommandType.Text, string.Format("insert into iptable(ip) values('{0}')", IpStr));         
            }
            catch (Exception ex)
            {
                //记录日志             
            }
            webBrowser1.Navigate(StrUrl);
            webBrowser1_DocumentCompleted(null, null);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            webBrowser1.Navigate(StrUrl);
            webBrowser1_DocumentCompleted(null, null);        
        }
       
        private void Form1_Load(object sender, EventArgs e)
        {
            updateTxt_ok = new happy(UpdateTxtMethod);
            button1_Click(null,null);
        }

        private void webBrowser1_DocumentCompleted(object sender, EventArgs e)//这个就是当网页载入完毕后要进行的操作
        {
            t.Start();//开启时钟
        }
    }
}

89ip代理：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Text.RegularExpressions;
using System.Security.Policy;

namespace 数据提取
{
    public partial class Form1 : Form
    {
        private static string StrUrl_66 = "http://www.66ip.cn/nmtq.php?getnum=10&isp=0&anonymoustype=0&start=&ports=&export=&ipaddress=&area=0&proxytype=2&api=66ip";
        private static string StrUrl_89 = "http://www.89ip.cn/tqdl.html?api=1&num=30&port=&address=&isp=";
        private static string StrUrl = StrUrl_89;
        //实例化timer
        System.Timers.Timer t = new System.Timers.Timer();
        //定义委托变量
        public happy updateTxt_ok;
        public delegate void happy();

        public Form1()
        {
            InitializeComponent();

            //设定timer
            t.Interval = 100000; //定时，单位ms
            t.Enabled = true; //回调函数允许执行
            t.AutoReset = false; //回调函数循环执行
            t.Elapsed += new System.Timers.ElapsedEventHandler(theout); //到达时间的时候执行事件；
            t.Stop();
        }

        //timer事件
        public void theout(object source, System.Timers.ElapsedEventArgs e)
        {
            this.BeginInvoke(updateTxt_ok);//委托执行updateTxt_ok
        }

        //委托执行函数
        public void UpdateTxtMethod()
        {
            try
            {
                HtmlDocument html = this.webBrowser1.Document;
                string IpStr = html.Body.InnerText.Trim().Replace("更好用的代理ip请访问：https://www.7yip.cn/", "");
                if (IpStr.LastIndexOf("更好用的代理") > 0)
                {
                    IpStr = IpStr.Substring(0, IpStr.LastIndexOf("更好用的代理")).Trim().Replace("\r\n", ";");
                }
                DBA.SqlDbAccess.ExecNoQuery(CommandType.Text, string.Format("insert into iptable(ip) values('{0}')", IpStr));                   
            }
            catch (Exception ex)
            {
                //记录日志             
            }
            webBrowser1.Navigate(StrUrl);
            webBrowser1_DocumentCompleted(null, null);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            webBrowser1.Navigate(StrUrl);
            webBrowser1_DocumentCompleted(null, null);        
        }
       
        private void Form1_Load(object sender, EventArgs e)
        {
            updateTxt_ok = new happy(UpdateTxtMethod);
            button1_Click(null,null);
        }

        private void webBrowser1_DocumentCompleted(object sender, EventArgs e)//这个就是当网页载入完毕后要进行的操作
        {
            t.Start();//开启时钟
        }
    }
}

以翻译接口演示：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Text.RegularExpressions;
using LibHW;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.IO;
using System.Security.Cryptography;

namespace KXDataToDB
{
    public class TranslateApi
    {
        static List<string> lstIP = new List<string>();
        static string ip = null;

        //读取数据库
        private void GetIPList()
        {
            string strip = DBA.SqlDbAccess.ExecuteScalar(System.Data.CommandType.Text, "select top 1 ip from iptable order by id desc").ToString();
            foreach (string item in strip.Split(';'))
            {
                string ip = "http://" + item.Trim();
                lstIP.Add(ip);
            }
        }private string getnewIP()
        {
            if (ip == null)
            {
                if (lstIP.Count == 0)
                {
                    GetIPList();
                }
                ip = lstIP[0].ToString();
                lstIP.RemoveAt(0);
            }
            return ip;
        }public string TranslateGoogle(string q, string from, string to)
        {
            bool isError = true;
            string result = string.Empty;
            while (isError)
            {
                try
                {
                    string url = string.Format(
                        "https://translate.google.cn/_/TranslateWebserverUi/data/batchexecute?rpcids={0}&bl={1}&soc-app={2}&soc-platform={3}&soc-device={4}&rt={5}", 
                        "MkEWBc", "boq_translate-webserver_20210927.13_p0", "1", "1", "1", "c");
                    var from_data = "f.req=" + System.Web.HttpUtility.UrlEncode(
                        string.Format("[[[\"MkEWBc\",\"[[\\\"{0}\\\",\\\"{1}\\\",\\\"{2}\\\",true],[null]]\", null, \"generic\"]]]",
                        ReplaceString(q), from, to), Encoding.UTF8).Replace("+", "%20");
                    byte[] postData = Encoding.UTF8.GetBytes(from_data);
                    WebClientPro client = new WebClientPro(10000);
                    WebProxy proxy = new WebProxy();
                    proxy.UseDefaultCredentials = false;
                    proxy.Address = new Uri(getnewIP());
                    client.Proxy = proxy;
                    client.Encoding = Encoding.UTF8;
                    client.Headers.Add("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
                    client.Headers.Add("ContentLength", postData.Length.ToString());
                    client.Headers.Add("accept", 
                        "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9");
                    client.Headers.Add("User-Agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36");
                    byte[] responseData = client.UploadData(url, "POST", postData);
                    string content = Encoding.UTF8.GetString(responseData);
                    result = MatchResult(content);
                    System.Threading.Thread.Sleep(new Random().Next(200, 500));
                    isError = false;
                }
                catch (Exception e)
                {
                    ip = null;
                    isError = true;
                }
            }
            return result;
        }

        /// <summary>
        /// 匹配翻译结果
        /// </summary>
        /// <returns></returns>
        public static string MatchResult(string content)
        {
            string result = "";
            string patttern = @",\[\[\\\""(.*?)\\\"",";
            Regex regex = new Regex(patttern);
            MatchCollection matchcollection = regex.Matches(content);
            if (matchcollection.Count > 0)
            {
                List<string> list = new List<string>();
                foreach (Match match in matchcollection)
                {
                    list.Add(match.Groups[1].Value);
                }
                result = string.Join(" ", list.Distinct());
                if (result.LastIndexOf(@"\""]]]],\""") > 0)
                {
                    result = result.Substring(0, result.LastIndexOf(@"\""]]]],"));
                }
            }
            return result;
        }

        /// <summary>
        ///   替换部分字符串
        /// </summary>
        /// <param name="sPassed">需要替换的字符串</param>
        /// <returns></returns>
        public static string ReplaceString(string JsonString)
        {
            if (JsonString == null) { return JsonString; }
            if (JsonString.Contains("\\"))
            {
                JsonString = JsonString.Replace("\\", "\\\\");
            }
            if (JsonString.Contains("\'"))
            {
                JsonString = JsonString.Replace("\'", "\\\'");
            }
            if (JsonString.Contains("\""))
            {
                JsonString = JsonString.Replace("\"", "\\\\\\\"");
            }
            //去掉字符串的回车换行符
            JsonString = Regex.Replace(JsonString, @"[\n\r]", "");
            JsonString = JsonString.Trim();
            return JsonString;
        }
　　}
}

WebClient重写：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;

namespace KXDataToDB
{
    public class WebClientPro : WebClient
    {
        /// <summary>
        /// 过期时间
        /// </summary>
        public int Timeout { get; set; }

        public WebClientPro(int timeout = 30000)
        {//默认30秒
            Timeout = timeout;
        }

        /// <summary>
        /// 重写GetWebRequest,添加WebRequest对象超时时间
        /// </summary>
        /// <param name="address"></param>
        /// <returns></returns>
        protected override WebRequest GetWebRequest(Uri address)
        {//WebClient里上传下载的方法很多，但最终应该都是调用了这个方法
            HttpWebRequest request = (HttpWebRequest)base.GetWebRequest(address);
            request.Timeout = Timeout;
            request.ReadWriteTimeout = Timeout;
            return request;
        }
    }
}

原文：https://www.cnblogs.com/wang920607/p/15378846.html

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