登录网站？（Jsoup）(Logging into a website?( Jsoup))

使用Jsoup登录网站需要什么？我相信我的代码是正确的，但我从未使用Jsoup成功登录过网站，所以我可能会错过一些东西。这是我的代码：

try { String url = ("http://quadrigacx.com/login"); Connection.Response loginForm = (Connection.Response)Jsoup.connect(url) .method(Connection.Method.GET) .execute(); Document loginDoc = loginForm.parse(); Elements loginElements = loginDoc.select("input:not([name=client_id]):not([name=password])"); int i = 0; String v[] = new String[loginElements.size()]; for (Element element: loginElements){ v[i++] = element.attr("value"); } int ii = 0; String n[] = new String[loginElements.size()]; for (Element element: loginElements){ n[ii++] = element.attr("name"); } Connection.Response loginFormLogin = (Connection.Response)Jsoup.connect(url) .cookies(loginForm.cookies()) .data(n[0],v[0]) .data("client_id", "xxxxxxx") .data("password", "xxxxxx") .data(n[1],v[1]) .data(n[2],v[2]) .method(Connection.Method.POST) .execute(); Document document2 = Jsoup.connect("http://quadrigacx.com/settings") .cookies(loginFormLogin.cookies()) .get(); System.out.print(document2.toString()); } catch (IOException ex) { Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex); }

document2返回一个登录页面，显示它没有成功登录。有一个名为time的输入值，我认为这可能是它无效的原因。这是一个随着时间推移而增加的价值; 我运行了两次代码，时间变量返回1511226860和1511226876 。我的代码需要大约10秒来打印文档，所以time变量可能在发送帖子请求时已经改变了吗？我不确定这是不是问题。也许还有其他我没看到的东西？谢谢。

编辑：这是代码，我已经使用用户名和密码登录后发布了身份验证。 loginCookies是第一次登录的cookie。 Connection.Response auth = Jsoup.connect("https://quadrigacx.com/authenticate") .userAgent("Mozilla") .method(Connection.Method.POST) .cookies(loginCookies) .data("google_code", googleCode.getText()) .data("email_code", emailCode.getText()) .data("authenticate", "Authenticate") .followRedirects(true) .execute(); 我也尝试过： byte[] gcText = googleCode.getText().getBytes(ISO_8859_1); String gcValue = new String(gcText, UTF_8); byte[] ecText = emailCode.getText().getBytes(ISO_8859_1); String ecValue = new String(ecText, UTF_8); Connection.Response auth = Jsoup.connect("https://quadrigacx.com/authenticate") .userAgent("Mozilla") .method(Connection.Method.POST) .cookies(loginCookies) .data("google_code", gcValue) .data("email_code", ecValue) .data("authenticate", "Authenticate") .followRedirects(true) .execute(); byte[] gcText = googleCode.getText().getBytes(ISO_8859_1); String gcValue = new String(gcText, UTF_8); byte[] ecText = emailCode.getText().getBytes(ISO_8859_1); String ecValue = new String(ecText, UTF_8); Connection.Response auth = Jsoup.connect("https://quadrigacx.com/authenticate") .userAgent("Mozilla") .method(Connection.Method.POST) .cookies(loginCookies) .data("google_code", gcValue) .data("email_code", ecValue) .data("authenticate", "Authenticate") .followRedirects(true) .execute();

What is required to log into a website using Jsoup? I believe my code is correct, but I have never successfully logged into a website using Jsoup so I might be missing something. Here is my code:

try { String url = ("http://quadrigacx.com/login"); Connection.Response loginForm = (Connection.Response)Jsoup.connect(url) .method(Connection.Method.GET) .execute(); Document loginDoc = loginForm.parse(); Elements loginElements = loginDoc.select("input:not([name=client_id]):not([name=password])"); int i = 0; String v[] = new String[loginElements.size()]; for (Element element: loginElements){ v[i++] = element.attr("value"); } int ii = 0; String n[] = new String[loginElements.size()]; for (Element element: loginElements){ n[ii++] = element.attr("name"); } Connection.Response loginFormLogin = (Connection.Response)Jsoup.connect(url) .cookies(loginForm.cookies()) .data(n[0],v[0]) .data("client_id", "xxxxxxx") .data("password", "xxxxxx") .data(n[1],v[1]) .data(n[2],v[2]) .method(Connection.Method.POST) .execute(); Document document2 = Jsoup.connect("http://quadrigacx.com/settings") .cookies(loginFormLogin.cookies()) .get(); System.out.print(document2.toString()); } catch (IOException ex) { Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex); }

document2 returns a login page which shows it didn't successfully log in. There is a input value named time, and I think that it might be why it doesn't work. It is a value that goes up over time; I ran the code twice and the time variables returned 1511226860 and 1511226876. My code takes about 10 seconds to print the doc, so maybe the time variable has already changed by the time it sends the post request? I am not sure whether this is the problem. Maybe there is something else I'm not seeing? Thanks.

Edit: Here is the code, I post the authenticate after I have already logged in with the user Id and password. loginCookies are the cookies from the first login. Connection.Response auth = Jsoup.connect("https://quadrigacx.com/authenticate") .userAgent("Mozilla") .method(Connection.Method.POST) .cookies(loginCookies) .data("google_code", googleCode.getText()) .data("email_code", emailCode.getText()) .data("authenticate", "Authenticate") .followRedirects(true) .execute(); I have also tried: byte[] gcText = googleCode.getText().getBytes(ISO_8859_1); String gcValue = new String(gcText, UTF_8); byte[] ecText = emailCode.getText().getBytes(ISO_8859_1); String ecValue = new String(ecText, UTF_8); Connection.Response auth = Jsoup.connect("https://quadrigacx.com/authenticate") .userAgent("Mozilla") .method(Connection.Method.POST) .cookies(loginCookies) .data("google_code", gcValue) .data("email_code", ecValue) .data("authenticate", "Authenticate") .followRedirects(true) .execute();

最满意答案

您需要为请求添加更多参数： csrf，time，hash

代码用空表：

import org.jsoup.Connection; import org.jsoup.Jsoup; import org.jsoup.nodes.Element; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.nio.charset.StandardCharsets; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Scanner; public class Quadrigacx { public static String[] TABLE = new String[]{}; // Add data here public static void main(String[] args) throws IOException, NoSuchAlgorithmException { final String URL = "https://www.quadrigacx.com/login/"; String password = "password"; String clientId = "id"; String hashPassword = getHash(new String[]{clientId, password}); Connection.Response response = Jsoup.connect(URL) .userAgent("Mozilla") .method(Connection.Method.GET) .execute(); Element csrf = response.parse().select("input[name=csrf]").first(); Element time = response.parse().select("input[name=time]").first(); Element hash = response.parse().select("input[name=hash]").first(); Jsoup.connect(URL) .userAgent("Mozilla") .method(Connection.Method.POST) .cookies(response.cookies()) .data("password", hashPassword) .data("client_id", clientId) .data("csrf", csrf.attr("value")) .data("time", time.attr("value")) .data("hash", hash.attr("value")) .execute(); String googleCode = ""; while (!googleCode.matches("^(?=[0-9]+)\\d{6}$")) { System.out.print("Please enter the Two-Factor Authentication to validate your login. (Numbers Only): "); Scanner in = new Scanner(System.in); googleCode = in.nextLine(); } Jsoup.connect("https://www.quadrigacx.com/authenticate") .userAgent("Mozilla") .method(Connection.Method.POST) .cookies(response.cookies()) .data("google_code", googleCode) .data("redirect", "dash") .data("authenticate", "Authenticate") .execute(); response = Jsoup.connect("https://www.quadrigacx.com/dash/") .userAgent("Mozilla") .cookies(response.cookies()) .method(Connection.Method.GET) .execute(); System.out.println(response.body()); } private static String getHash(String[] loginArray) throws NoSuchAlgorithmException, UnsupportedEncodingException { StringBuilder h = new StringBuilder(); for (String data : loginArray) h.append(data).append(getSalt(data)); MessageDigest digest = MessageDigest.getInstance("SHA-256"); byte[] byteHash = digest.digest(h.toString().getBytes(StandardCharsets.UTF_8)); StringBuilder sb = new StringBuilder(byteHash.length * 2); for (byte b : byteHash) sb.append(String.format("%02x", b)); return sb.toString(); } private static String getSalt(String arg) throws UnsupportedEncodingException { return TABLE[getLastByte(arg)]; } private static int getLastByte(String login) throws UnsupportedEncodingException { final byte[] utf8Bytes = login.getBytes("UTF-8"); return utf8Bytes[utf8Bytes.length - 1]; } }

你可以在这里找到完整的工作代码（很长）：

https://pastebin.com/aBf1M3fX

You need to add more parameters to your request: csrf, time, hash

Code with empty TABLE:

import org.jsoup.Connection; import org.jsoup.Jsoup; import org.jsoup.nodes.Element; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.nio.charset.StandardCharsets; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Scanner; public class Quadrigacx { public static String[] TABLE = new String[]{}; // Add data here public static void main(String[] args) throws IOException, NoSuchAlgorithmException { final String URL = "https://www.quadrigacx.com/login/"; String password = "password"; String clientId = "id"; String hashPassword = getHash(new String[]{clientId, password}); Connection.Response response = Jsoup.connect(URL) .userAgent("Mozilla") .method(Connection.Method.GET) .execute(); Element csrf = response.parse().select("input[name=csrf]").first(); Element time = response.parse().select("input[name=time]").first(); Element hash = response.parse().select("input[name=hash]").first(); Jsoup.connect(URL) .userAgent("Mozilla") .method(Connection.Method.POST) .cookies(response.cookies()) .data("password", hashPassword) .data("client_id", clientId) .data("csrf", csrf.attr("value")) .data("time", time.attr("value")) .data("hash", hash.attr("value")) .execute(); String googleCode = ""; while (!googleCode.matches("^(?=[0-9]+)\\d{6}$")) { System.out.print("Please enter the Two-Factor Authentication to validate your login. (Numbers Only): "); Scanner in = new Scanner(System.in); googleCode = in.nextLine(); } Jsoup.connect("https://www.quadrigacx.com/authenticate") .userAgent("Mozilla") .method(Connection.Method.POST) .cookies(response.cookies()) .data("google_code", googleCode) .data("redirect", "dash") .data("authenticate", "Authenticate") .execute(); response = Jsoup.connect("https://www.quadrigacx.com/dash/") .userAgent("Mozilla") .cookies(response.cookies()) .method(Connection.Method.GET) .execute(); System.out.println(response.body()); } private static String getHash(String[] loginArray) throws NoSuchAlgorithmException, UnsupportedEncodingException { StringBuilder h = new StringBuilder(); for (String data : loginArray) h.append(data).append(getSalt(data)); MessageDigest digest = MessageDigest.getInstance("SHA-256"); byte[] byteHash = digest.digest(h.toString().getBytes(StandardCharsets.UTF_8)); StringBuilder sb = new StringBuilder(byteHash.length * 2); for (byte b : byteHash) sb.append(String.format("%02x", b)); return sb.toString(); } private static String getSalt(String arg) throws UnsupportedEncodingException { return TABLE[getLastByte(arg)]; } private static int getLastByte(String login) throws UnsupportedEncodingException { final byte[] utf8Bytes = login.getBytes("UTF-8"); return utf8Bytes[utf8Bytes.length - 1]; } }

Full working code you can find here (very long):

https://pastebin.com/aBf1M3fX

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