У меня возникают проблемы при входе на мою школьную веб-страницу Moodle и загрузке исходного кода, поэтому я могу получить страницу входа, на которой он фактически никогда не заходит, любая помощь будет принята с благодарностью. Я застрял с этой проблемой дляпару недель сейчас.Код ниже - не моя, а модифицированная версия нескольких примеров, которые я нашел в Интернете.
import java.net.*;
import java.io.*;
import java.util.*;
public class LoginByHttpPost
{
private static final String POST_CONTENT_TYPE = "application/x-www-form-urlencoded";
private static final String LOGIN_USER_NAME = "myusername";
private static final String LOGIN_PASSWORD = "mypassword";
private static final String LOGIN_DOMAIN = "students.ltu.edu.au";
private static final String TARGET_URL = "https://www.latrobe.edu.au/lms/login/";
private String page ="";
public static void main (String args[])
{
LoginByHttpPost httpUrlBasicAuthentication = new LoginByHttpPost();
httpUrlBasicAuthentication.httpPostLogin();
}
public void httpPostLogin ()
{
try
{
String urlEncodedContent = preparePostContent(LOGIN_USER_NAME, LOGIN_PASSWORD, LOGIN_DOMAIN);
HttpURLConnection urlConnection = doHttpPost(TARGET_URL, urlEncodedContent);
page = readResponse(urlConnection);
System.out.println("Successfully made the HTPP POST.");
System.out.println("Recevied response is: '/n" + page + "'");
}
catch(IOException ioException)
{
System.out.println("Problems encounterd.");
}
}
private String preparePostContent(String loginUserName, String loginPassword, String loginDomain) throws UnsupportedEncodingException
{
String encodedLoginUserName = URLEncoder.encode(loginUserName, "UTF-8");
String encodedLoginPassword = URLEncoder.encode(loginPassword, "UTF-8");
String encodedLoginDomain = URLEncoder.encode(loginDomain, "UTF-8");
String content = URLEncoder.encode("username=", "UTF-8") + encodedLoginUserName
+ URLEncoder.encode("&password=", "UTF-8") + encodedLoginPassword
+ URLEncoder.encode("&domain=", "UTF-8") + encodedLoginDomain
+ URLEncoder.encode("&Login=", "UTF-8") + URLEncoder.encode("Login", "UTF-8");
return content;
}
public HttpURLConnection doHttpPost(String targetUrl, String content) throws IOException
{
DataOutputStream dataOutputStream = null;
HttpURLConnection conn = null;
String cookieFirst = null;
String cookieValue = null;
String totalCookie = "";
try
{
CookieManager manager = new CookieManager();
manager.setCookiePolicy(CookiePolicy.ACCEPT_ALL);
CookieHandler.setDefault(manager);
URL url = new URL(targetUrl);
conn = (HttpURLConnection)url.openConnection();
conn.getContent();
CookieStore cookiejar = manager.getCookieStore();
List<HttpCookie> cookiesList = cookiejar.getCookies();
for(HttpCookie cookiel: cookiesList)
{
totalCookie += cookiel+"; ";
}
totalCookie = totalCookie.substring(0, totalCookie.length()-1);
System.out.println("Total Cookie: " + totalCookie);
}
catch(Exception e)
{
System.out.println("Something went wrong");
}
HttpURLConnection urlConnection = null;
try{
URL url = new URL(targetUrl);
urlConnection = (HttpURLConnection)url.openConnection();
urlConnection.setDoInput(true);
urlConnection.setDoOutput(true);
urlConnection.setUseCaches(true);
urlConnection.setRequestProperty("Content-Type", POST_CONTENT_TYPE);
urlConnection.setRequestProperty("Content-Length", Integer.toString(content.length()));
urlConnection.setInstanceFollowRedirects(true);
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("Cookie", totalCookie);
urlConnection.connect();
dataOutputStream = new DataOutputStream(urlConnection.getOutputStream());
dataOutputStream.writeBytes(content);
dataOutputStream.flush();
dataOutputStream.close();
}
catch(IOException ioException)
{
System.out.println("I/O problems while trying to do a HTTP post.");
ioException.printStackTrace();
if (dataOutputStream != null)
{
try
{
dataOutputStream.close();
}
catch(Throwable ignore)
{
}
}
if (urlConnection != null)
{
urlConnection.disconnect();
}
throw ioException;
}
return urlConnection;
}
private String readResponse(HttpURLConnection urlConnection) throws IOException
{
BufferedReader bufferedReader = null;
try
{
bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
String responeLine;
StringBuilder response = new StringBuilder();
while ((responeLine = bufferedReader.readLine()) != null)
{
response.append(responeLine + "\n");
}
return response.toString();
}
catch(IOException ioException)
{
System.out.println("Problems while reading the response");
ioException.printStackTrace();
throw ioException;
}
finally
{
if (bufferedReader != null)
{
try
{
bufferedReader.close();
}
catch(Throwable ignore)
{
}
}
}
}
}