闲来无事，写了一个对discuss论坛登陆的案例，初次上场按照之前的惯例没成功，见过抓包分析discuss论坛成功完成，废话很少说 直接上代码。php
1：winform 作客户端，添加HttpClient的引用html
初始化对象：ajax
private const string BaseUrl = "替换为论坛地址"; private const string useAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36"; private readonly HttpClient httpClient; private readonly HttpClientHandler handler; private readonly string userName = "superadmin"; private readonly string passWord = "123456"; private readonly HtmlDocument htmlDoc; private BaiDuToken baiDuToken; public Form1() { InitializeComponent(); handler = new HttpClientHandler() { UseCookies = true, AllowAutoRedirect = true }; httpClient = new HttpClient(handler) { BaseAddress = new Uri(BaseUrl) }; httpClient.DefaultRequestHeaders.Add("user-agent", useAgent); httpClient.DefaultRequestHeaders.Add("Connection", "Keep-Alive"); httpClient.DefaultRequestHeaders.Add("Keep-Alive", "timeout=600"); httpClient.DefaultRequestHeaders.Add("Referer", $"{BaseUrl}member.php?mod=logging&action=login"); htmlDoc = new HtmlDocument(); }
2：具体方法async
/// <summary>
/// 获取导航
/// </summary>
/// <param name="fid"></param>
/// <returns></returns>
private string GetNav(int fid = 72)
{
return $"forum.php?mod=forumdisplay&fid={fid}";
}
/// <summary>
/// 百度ai token
/// </summary>
/// <returns></returns>
private async Task<BaiDuToken> BaiDuTokenAsync() =>
await httpClient.GetAccessTokenAsync(); //百度ai 代码 自我实现
/// <summary>
/// 搜索字符
/// </summary>
/// <param name="allStr"></param>
/// <param name="firstStr"></param>
/// <param name="lastStr"></param>
/// <returns></returns>
public string GetStringMid(string allStr, string firstStr, string lastStr)
{
int num = allStr.IndexOf(firstStr);
int num2 = allStr.IndexOf(lastStr, num + firstStr.Length);
if (num < 0 || num2 < 0)
{
return "";
}
num += firstStr.Length;
num2 -= num;
if (num < 0 || num2 < 0)
{
return "";
}
return allStr.Substring(num, num2);
}
/// <summary>
/// 搜索字符
/// </summary>
/// <param name="allStr"></param>
/// <param name="firstStr"></param>
/// <param name="lastStr"></param>
/// <param name="regexCode"></param>
/// <returns></returns>
public List<string> GetStringMids(string allStr, string firstStr,
string lastStr, string regexCode = "(.*?)")
{
List<string> list = new List<string>();
string pattern = $"{firstStr}{regexCode}{lastStr}";
Regex regex = new Regex(pattern);
MatchCollection matchCollection = regex.Matches(allStr);
for (int i = 0; i < matchCollection.Count; i++)
{
GroupCollection groups = matchCollection[i].Groups;
for (int j = 1; j < groups.Count; j++)
{
string value = groups[j].Value;
if (!string.IsNullOrEmpty(value))
{
list.Add(value);
}
}
}
return list;
}
/// <summary>
/// 响应html为字符串
/// </summary>
/// <param name="url"></param>
/// <returns></returns>
private async Task<string> GetResponseStrAsync(string url)
{
return await (await GetResponseAsync(url))?.ReadAsStringAsync();
}
/// <summary>
/// 响应
/// </summary>
/// <param name="url"></param>
/// <returns></returns>
private async Task<HttpContent> GetResponseAsync(string url)
{
HttpResponseMessage response = await httpClient.GetAsync(url);
if (!response.IsSuccessStatusCode)
{
return null;
}
return response.Content;//具体结果
}
private string seccode, loginhash, formhash;
/// <summary>
/// 获取登陆相关参数
/// </summary>
/// <returns></returns>
private async Task GetformAsync() //获取登陆相关参数
{
string url = "member.php?mod=logging&action=login";
string html = await GetResponseStrAsync(url);
seccode = GetStringMid(html, "seccode_", "\"");
loginhash = GetStringMid(html, "loginhash=", "\"");
formhash = GetStringMid(html, "<input type=\"hidden\" name=\"formhash\" value=\"", "\"");
}
/// <summary>
/// 获取验证码地址
/// </summary>
/// <returns></returns>
private async Task<string> GetupdateAsync()//获取验证码地址
{
string url = $"misc.php?mod=seccode&action=update&idhash={seccode}";//请求地址
string res = await GetResponseStrAsync(url);
return GetStringMid(res, "width=\"100\" height=\"30\" src=\"", "\"");
}
private async void PictureBox1_Click(object sender, EventArgs e)
{
await GetImageAsync();
}
private async void Form1_Load(object sender, EventArgs e)
{
await GetformAsync();
await GetImageAsync();
baiDuToken = await BaiDuTokenAsync();
}
/// <summary>
/// 获取验证码图片
/// </summary>
/// <param name="update"></param>
/// <returns></returns>
private async Task<byte[]> GetImageAsync()
{
string update = await GetupdateAsync();
byte[] bytes = await httpClient.GetByteArrayAsync(update);
return bytes;
}
/// <summary>
/// 登陆
/// </summary>
/// <returns></returns>
private async Task<bool> GetLoginAsync()
{
byte[] bytes = await GetImageAsync();
ImagToWords imagToWords = BaiDuAccessToken.RecogniseImage(bytes, baiDuToken);//利用百度 ai识别验证码
string code = string.Join("", imagToWords.Words_result.Select(s => s.Words));
string url = $"misc.php?mod=seccode&action=check&inajax=1&modid=member::logging&idhash={seccode}&secverify={code}";//请求地址
string html = await GetResponseStrAsync(url);
if (html.Contains("succeed"))
{
url = $"member.php?mod=logging&action=login&loginsubmit=yes&loginhash{loginhash}&inajax=1";//请求地址
List<KeyValuePair<string, string>> paraList = new List<KeyValuePair<string, string>>
{
new KeyValuePair<string, string>("formhash", formhash),
new KeyValuePair<string, string>("username", userName),
new KeyValuePair<string, string>("password", passWord),
new KeyValuePair<string, string>("seccodehash", seccode),
new KeyValuePair<string, string>("seccodeverify", code),
};
HttpResponseMessage response = await httpClient.PostAsync(url,
new FormUrlEncodedContent(paraList));
html = await response.Content.ReadAsStringAsync();
return html.Contains("欢迎您回来");
}
return false;
}