Ive done a service that should download a excelfile and pass in on to the user.
The download method:
private void fetchCompanyInfo(int id) throws IOException{
URL url = new URL("https://xxxxxxxxxx");
URLConnection con = url.openConnection();
String query = "ID="+java.net.URLEncoder.encode(String.valueOf(id),"UTF-8");
String cookie = "";
for (String tmp: this.cookies)
{
System.out.println(tmp);
cookie += tmp.split(";")[0] + ";";
System.out.println(cookie);
}
con.setRequestProperty(COOKIE, cookie);
System.out.println("this is the cookie: " + cookie);
con.setRequestProperty("Content-length", String.valueOf(query.length()));
con.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
con.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0;Windows98;DigExt)");
con.setDoOutput(true);
con.setDoInput(true);
OutputStreamWriter out = new OutputStreamWriter(con.getOutputStream());
out.write(query);
out.close();
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
String receive = "";
do {
String line = in.readLine();
if (line == null)
break;
receive += line;
} while (true);
in.close();
excel = receive;
System.out.println(receive);
}
And this is the controller:
#RequestMapping(value="/test", produces="application/x-msexcel")
public CompanyInfo test() throws IOException {
return new CompanyInfo();
}
The response from the site im calling returns an
Content-Disposition: attachment; filename=Company123.xls;
Content-Type: Application/x-msexcel
So I just want to forward that attachment
Related
I have this method to connect to my webservice (REST API)
public static void getHttpCon() throws Exception{
String tokenUrl = AppPropertiesService.getProperty( URL_TOKEN );
String username = AppPropertiesService.getProperty( USERNAME );
String password = AppPropertiesService.getProperty( PASSWORD );
String POST_PARAMS = "username="+username+"&password="+password+"&lang=fr&grant_type=password&client_id=apiclient";
URL obj = new URL(tokenUrl);
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("Content-Type", "application/json;odata=verbose");
con.setRequestProperty("Authorization",
"Basic Base64_encoded_clientId:clientSecret");
con.setRequestProperty("Accept",
"application/x-www-form-urlencoded");
// For POST only - START
con.setDoOutput(true);
OutputStream os = con.getOutputStream();
os.write(POST_PARAMS.getBytes());
os.flush();
os.close();
// For POST only - END
int responseCode = con.getResponseCode();
System.out.println("POST Response Code :: " + responseCode);
if (responseCode == HttpURLConnection.HTTP_OK) { //success
BufferedReader in = new BufferedReader(new InputStreamReader(
con.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
// print result
System.out.println(response.toString());
} else {
System.out.println("POST request not worked");
}
}
I want to know how can i POSTa CSV File .
Should I do it directly in my method above ?
Do I have to create a new method by recovering the connection token from my method above?
My API ULR is POST /api/{id}/csv
I am trying to make it so I can login to facebook using proxies and threads. I had this working single thread with jsoup.connect but it will not allow me to do multithreading with multiple proxies. I am trying to login to Facebook using HttpsURLConnection.
public class HttpUrlConnectionExample {
private List<String> cookies;
private HttpsURLConnection conn;
private final String USER_AGENT = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.108 Safari/537.36";
public static void main(String[] args) throws Exception {
String url = "https://facebook.com/login.php?login_attempt=1&lwv=110";
String gmail = "https://facebook.com";
HttpUrlConnectionExample http = new HttpUrlConnectionExample();
// make sure cookies is turn on
CookieHandler.setDefault(new CookieManager());
// 1. Send a "GET" request, so that you can extract the form's data.
String page = http.GetPageContent(url);
String postParams = http.getFormParams(page, "email#live.com", "password");
// 2. Construct above post's content and then send a POST request for
// authentication
http.sendPost(url, postParams);
// 3. success then go to gmail.
String result = http.GetPageContent(gmail);
System.out.println(result);
}
private void sendPost(String url, String postParams) throws Exception {
URL obj = new URL(url);
conn = (HttpsURLConnection) obj.openConnection();
// Acts like a browser
conn.setUseCaches(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Host", "facebook.com");
conn.setRequestProperty("User-Agent", USER_AGENT);
conn.setRequestProperty("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
conn.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
/*
for (String cookie : this.cookies) {
conn.addRequestProperty("Cookie", cookie.split(";", 1)[0]);
}
*/
conn.setRequestProperty("Connection", "keep-alive");
conn.setRequestProperty("Referer", "https://facebook.com/login.php?login_attempt=1&lwv=110");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", Integer.toString(postParams.length()));
conn.setDoOutput(true);
conn.setDoInput(true);
// Send post request
DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
wr.writeBytes(postParams);
wr.flush();
wr.close();
int responseCode = conn.getResponseCode();
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Post parameters : " + postParams);
System.out.println("Response Code : " + responseCode);
System.out.println(conn.toString());
BufferedReader in =
new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
// System.out.println(response.toString());
}
private String GetPageContent(String url) throws Exception {
URL obj = new URL(url);
conn = (HttpsURLConnection) obj.openConnection();
// default is GET
conn.setRequestMethod("GET");
conn.setUseCaches(false);
// act like a browser
conn.setRequestProperty("User-Agent", USER_AGENT);
conn.setRequestProperty("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
conn.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
if (cookies != null) {
for (String cookie : this.cookies) {
conn.addRequestProperty("Cookie", cookie.split(";", 1)[0]);
}
}
int responseCode = conn.getResponseCode();
System.out.println("\nSending 'GET' request to URL : " + url);
System.out.println("Response Code : " + responseCode);
BufferedReader in =
new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
// Get the response cookies
setCookies(conn.getHeaderFields().get("Set-Cookie"));
return response.toString();
}
public String getFormParams(String html, String username, String password)
throws UnsupportedEncodingException {
System.out.println("Extracting form's data...");
Document doc = Jsoup.parse(html);
System.out.println(doc.body());
// Facebook form id
Element loginform = doc.getElementById("login_form");
Elements inputElements = loginform.getElementsByTag("input");
List<String> paramList = new ArrayList<String>();
for (Element inputElement : inputElements) {
String key = inputElement.attr("name");
System.out.println("Key: " + key);
String value = inputElement.attr("value");
System.out.println("Value: " + value);
if (key.equals("email"))
{
value = username;
System.out.println("Email: "+value);
}
else if (key.equals("pass"))
{
value = password;
System.out.println("Password: "+value);
//paramList.add(key + "=" + URLEncoder.encode(value, "UTF-8"));
}
paramList.add(key + "=" + URLEncoder.encode(value, "UTF-8"));
}
// build parameters list
StringBuilder result = new StringBuilder();
for (String param : paramList) {
if (result.length() == 0) {
result.append(param);
} else {
result.append("&" + param);
}
}
System.out.println("result: " + result.toString());
return result.toString();
/*
// Google form id
Element loginform = doc.getElementById("gaia_loginform");
Elements inputElements = loginform.getElementsByTag("input");
List<String> paramList = new ArrayList<String>();
for (Element inputElement : inputElements) {
String key = inputElement.attr("name");
String value = inputElement.attr("value");
if (key.equals("Email"))
value = username;
else if (key.equals("Passwd"))
value = password;
paramList.add(key + "=" + URLEncoder.encode(value, "UTF-8"));
}
// build parameters list
StringBuilder result = new StringBuilder();
for (String param : paramList) {
if (result.length() == 0) {
result.append(param);
} else {
result.append("&" + param);
}
}
*/
//return result.toString();
//return "";
}
public List<String> getCookies() {
return cookies;
}
public void setCookies(List<String> cookies) {
this.cookies = cookies;
}
}
Originally I was able to login, but now it it is forcing me to change my password, and giving a message saying an unusual login attempt has been detected. Is there anyone who would be able to give me some guidance of where I should look to achieve what I am looking to do. I have also tried logging into m.facebook utilizing fiddler with no avail. I would like to do this without the API to just see how it works.
I am trying to adapt this to learn from - https://www.mkyong.com/java/how-to-automate-login-a-website-java-example/
UPDATE:
So not only it showing the unusual login attempt, but it is giving a diffrent user agent and ip then the one I am attempting with. The login is working, but it's not passing the string that says invalid user or email when I enter a wrong password. Can anyone shed some light?
I am facing a problem while using POST Method in Java nowadays. I am receiving
Exception in thread "main" java.lang.RuntimeException: Server returned HTTP response code: 411 for URL.
I couldn't find any available document anywhere. None of them were useful. How do I fix it?
My code
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class req {
public static void main(String[] args) {
sendPostRequest(requestURL);
}
private static String sendPostRequest(String requestUrl) {
StringBuilder jsonString = new StringBuilder();
try {
URL url = new URL(requestUrl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
byte[] data = requestUrl.getBytes("UTF-8");
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setRequestMethod("POST");
connection.setRequestProperty("Accept", "application/json");
connection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
connection.setRequestProperty("Content-Length", String.valueOf(data.length));
connection.setRequestProperty("Authorization", "Basic " + "usename:password");
BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line;
while ((line = br.readLine()) != null) {
jsonString.append(line);
}
br.close();
connection.disconnect();
} catch (Exception e) {
throw new RuntimeException(e.getMessage());
}
return jsonString.toString();
}
}
Perfectly working method:
public String sendPostRequest(String requestURL, HashMap<String, String> postDataParams) {
URL url;
String response = "";
try {
url = new URL(requestURL);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(15000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(getPostDataString(postDataParams));
writer.flush();
writer.close();
os.close();
int responseCode=conn.getResponseCode();
if (responseCode == HttpsURLConnection.HTTP_OK) {
BufferedReader br=new BufferedReader(new InputStreamReader(conn.getInputStream()));
response = br.readLine();
}
else {
response="Error Registering";
}
} catch (Exception e) {
e.printStackTrace();
}
return response;
}
private String getPostDataString(HashMap<String, String> params) throws UnsupportedEncodingException {
StringBuilder result = new StringBuilder();
boolean first = true;
for(Map.Entry<String, String> entry : params.entrySet()){
if (first)
first = false;
else
result.append("&");
result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
result.append("=");
result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
}
return result.toString();
}
If you are returning a JSON in your response:
public JSONObject getPostResult(String json){
if(!json.isEmpty()) {
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON_ERROR", "Error parsing data " + e.toString());
}
}
return jObj;
}
If you are still having trouble, maybe this will help. I did not test, machine does not have java installed.
You should also set all other headers that you need.
public static String PostRequest(String requestUrl, String username, String password) {
StringBuilder jsonString = new StringBuilder();
HttpURLConnection connection = null;
try {
URL url = new URL(requestUrl);
connection = (HttpURLConnection)url.openConnection();
byte[] authData = Base64.encode((username + password).getBytes());
connection.setRequestMethod("POST");
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setRequestProperty("Authorization", "Basic " + new String(authData));
connection.setRequestProperty("Content-Length", String.valueOf(authData.length));
try (DataOutputStream writer = new DataOutputStream(connection.getOutputStream())) {
writer.writeBytes("REPLACE ME WITH DATA TO BE WRITTEN");
writer.flush();
}
try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
String data = null;
while ((data = reader.readLine()) != null) {
jsonString.append(data);
}
}
} catch (IOException ex) {
//Handle exception.
} finally {
if (connection != null)
connection.disconnect();
}
return jsonString.toString();
}
You should send empty data in body if you are using post method.
For example if you are using json data you need to send "{}"
public void Post() throws Exception {
StringBuffer d = new StringBuffer();
String da = "ClearanceDate=2020-08-31&DepositeDate=2020-08-31&BankTransactionNo=UATRYU56789";
URL url = new URL("https://abcd/AddReceipt?" + da);
byte[] postDataBytes = ("https://abcd/AddReceipt?" + da).toString()
.getBytes("UTF-8");
System.out.println("Data--" + postDataBytes);
HttpsURLConnection con = (HttpsURLConnection) url.openConnection();
// con.setRequestProperty("User-Agent",
// "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.95 Safari/537.11");
con.setRequestMethod("POST");
con.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
con.setRequestProperty("Content-Length",
String.valueOf(postDataBytes.length));
con.setRequestProperty(
"Authorization",
"Bearer "
+ "o731WGgp1d913ZOYivnc55yOg0y1Wk7GsT_mnCUKOJf1VChYOdfRjovAxOhyyPKU93ERue6-l9DyG3IP29ObsCNTFr4lGZOcYAaR96ZudKgWif1UuSfVx4AlATiOs9shQsGgb1oXN_w0NRJKvYqD0LLsZLstBAzP1s5PZoaS9c6MmO32AV47FUvxRT6Tflus5DBDHji3N4f1AM0dShbzmjkBCzXmGzEDnU6Jg1Mo5kb884kParngKADG5umtuGbNzChQpMw_A0SyEYaUNh18pXVmnNhqM3Qx5ZINwDEXlYY");
con.setRequestProperty("Accept", "application/json");
con.setDoInput(true);
con.setDoOutput(true);
con.getOutputStream().write(postDataBytes);
int status = con.getResponseCode();
System.out.println("Response status: " + status + "|"
+ con.getResponseMessage());
BufferedReader in = new BufferedReader(new InputStreamReader(
con.getInputStream()));
String inputLine;
StringBuffer content = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
content.append(inputLine);
}
in.close();
con.disconnect();
System.out.println("Response status: " + status);
System.out.println(content.toString());
System.out.print("Raw Response->>" + d);
}
I'm developing a small program that performs login via HttpUrlConnection in a session-based screen, save the cookies and go to another page using the saved cookies. My code looks like this:
public class LoginConnection {
private final String USER_AGENT = "Mozilla/5.0";
private CookieStore cookieJar;
public static void main(String[] args) throws Exception {
LoginConnection http = new LoginConnection();
http.sendPost();
http.sendGet();
}
public LoginConnection() {
CookieManager manager = new CookieManager();
CookieHandler.setDefault(manager);
cookieJar = manager.getCookieStore();
}
private void sendPost() throws Exception {
String params = "login=username&password=passwd";
URL url = new URL("http://www.domain.com/login");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Accept-Language", "pt-BR,pt;q=0.8,en-US;q=0.6,en;q=0.4");
// Send post request
connection.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
wr.writeBytes(params);
wr.flush();
wr.close();
// send request
DataOutputStream dos = new DataOutputStream(connection.getOutputStream());
dos.writeBytes(params);
dos.flush();
dos.close();
BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line, response = "";
while ((line = in.readLine()) != null) {
response += line + "\n";
}
in.close();
String headerName = null;
for (int i = 1; (headerName = connection.getHeaderFieldKey(i)) != null; i++) {
if (headerName.equals("Set-Cookie")) {
String cookie = connection.getHeaderField(i);
cookie = cookie.substring(0, cookie.indexOf(";"));
String cookieName = cookie.substring(0, cookie.indexOf("="));
String cookieValue = cookie.substring(cookie.indexOf("=") + 1, cookie.length());
HttpCookie httpCookie = new HttpCookie(cookieName, cookieValue);
httpCookie.setDomain("http://www.domain.com/");
httpCookie.setPath("/");
httpCookie.setVersion(0);
cookieJar.add(new URI("http://www.domain.com/"), httpCookie);
}
}
// show cookies (sessionid)
System.out.println("CookieHandler retrieved cookie: " + cookieJar.getCookies().get(0).toString());
// print result
System.out.println(response.toString().replaceAll("\\s+", " "));
}
// HTTP GET request
private void sendGet() throws Exception {
URL url = new URL("http://www.domain.com/profile");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("GET");
// add request header
con.setRequestProperty("User-Agent", USER_AGENT);
con.setRequestProperty("Cookie", cookieJar.getCookies().get(0).toString());
con.getContent();
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
String line, response = "";
while ((line = in.readLine()) != null) {
response += line + "\n";
}
in.close();
// show cookies (sessionid)
System.out.println("CookieHandler retrieved cookie: " + cookieJar.getCookies().get(0).toString());
// print result
System.out.println(response.toString().replaceAll("\\s+", " "));
}
}
The problem is that even sending cookies, the server is returning to the login page. Can someone help me?
I want to make java program to download a file from website, but i'm stuck in following situation. When I run the following code logging to page gets done successfully, but after it is done, when I send request for the next page, it shows response code 500.
public class Ss2mydb
{
private List<String> cookies;
private HttpURLConnection conn;
private final String USER_AGENT = "Mozilla/5.0";
public static void main(String[] args) throws Exception
{
String indexPage = "http://10.100.100.142/index.asp";
String validatePage = "http://10.100.100.142/validate.asp";
String ccmenuPage = "http://10.100.100.142/callcentre/ccmenu.asp";
String reportPage = "http://10.100.100.142/topmgmt/reports/PROJECTVIJAY/get_download_cafs.asp";
String reportPageDownload = "http://10.100.100.142/topmgmt/reports/PROJECTVIJAY/get_download_cafs.asp?view=N";
Ss2mydb http = new Ss2mydb();
// make sure cookies is turn on
CookieHandler.setDefault(new CookieManager());
// 1. Send a "GET" request, so that you can extract the form's data.
String page = http.GetPageContent(indexPage);
String postParams = http.getFormParams(page, "username", "password");
// 2. Construct above post's content and then send a POST request for
// authentication
http.sendPost(validatePage, postParams);
// System.exit(0);
// 3. success then go to gmail.
http.GetPageContent2(ccmenuPage);
String result = http.GetPageContent2(reportPage);
System.out.println(result);
}
private void sendPost(String url, String postParams) throws Exception {
URL obj = new URL(url);
conn = (HttpURLConnection) obj.openConnection();
// Acts like a browser
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Host", "10.100.100.142");
conn.setRequestProperty("User-Agent", USER_AGENT);
conn.setRequestProperty("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
conn.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
for (String cookie : this.cookies) {
System.out.println(" sendPost : "+cookie.split(";", 1)[0]);
conn.addRequestProperty("Cookie",cookie.split(";", 1)[0]);
}
conn.setRequestProperty("Connection", "keep-alive");
conn.setRequestProperty("Referer", "http://10.100.100.142/index.asp");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", Integer.toString(postParams.length()));
conn.setDoOutput(true);
conn.setDoInput(true);
// Send post request
DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
wr.writeBytes(postParams);
wr.flush();
wr.close();
int responseCode = conn.getResponseCode();
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Post parameters : " + postParams);
System.out.println("Response Code : " + responseCode);
// setCookies(conn.getHeaderFields().get("Set-Cookie"));
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
// System.out.println(response.toString());
}
private String GetPageContent2(String url) throws Exception {
URL obj = new URL(url);
conn = (HttpURLConnection) obj.openConnection();
// default is GET
conn.setRequestMethod("GET");
conn.setUseCaches(false);
// act like a browser
conn.setRequestProperty("User-Agent", USER_AGENT);
conn.setRequestProperty("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
conn.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
System.out.println(" L : "+cookies);
if (cookies != null) {
for (String cookie : this.cookies) {
System.out.println(" GetPageContent : "+cookie.split(";", 1)[0]);
conn.addRequestProperty("Cookie", cookie.split(";", 1)[0]);
}
}
int responseCode = conn.getResponseCode();
System.out.println("\nSending 'GET' request to URL : " + url);
System.out.println("Response Code : " + responseCode);
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
// Get the response cookies
// System.out.println(" Get : "+conn.getHeaderFields().get("Set-Cookie"));
// setCookies(conn.getHeaderFields().get("Set-Cookie"));
return response.toString();
}
private String GetPageContent(String url) throws Exception {
URL obj = new URL(url);
conn = (HttpURLConnection) obj.openConnection();
// default is GET
conn.setRequestMethod("GET");
conn.setUseCaches(false);
// act like a browser
conn.setRequestProperty("User-Agent", USER_AGENT);
conn.setRequestProperty("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
conn.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
System.out.println(" L : "+cookies);
if (cookies != null) {
for (String cookie : this.cookies) {
System.out.println(" GetPageContent : "+cookie.split(";", 1)[0]);
conn.addRequestProperty("Cookie", cookie.split(";", 1)[0]);
}
}
int responseCode = conn.getResponseCode();
System.out.println("\nSending 'GET' request to URL : " + url);
System.out.println("Response Code : " + responseCode);
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
// Get the response cookies
System.out.println(" Get : "+conn.getHeaderFields().get("Set-Cookie"));
setCookies(conn.getHeaderFields().get("Set-Cookie"));
return response.toString();
}
public String getFormParams(String html, String username, String password)
throws UnsupportedEncodingException {
System.out.println("Extracting form's data...");
Document doc = Jsoup.parse(html);
// Google form id
Element loginform = doc.getElementById("right");
Elements inputElements = loginform.getElementsByTag("input");
List<String> paramList = new ArrayList<String>();
for (Element inputElement : inputElements) {
String key = inputElement.attr("name");
String value = inputElement.attr("value");
if (key.equals("USERname"))
value = username;
else if (key.equals("password"))
value = password;
if(!key.equals(""))
paramList.add(key + "=" + URLEncoder.encode(value, "UTF-8"));
}
// build parameters list
StringBuilder result = new StringBuilder();
for (String param : paramList) {
if (result.length() == 0) {
result.append(param);
} else {
result.append("&" + param);
}
}
return result.toString();
}
public List<String> getCookies() {
return cookies;
}
public void setCookies(List<String> cookies) {
this.cookies = cookies;
}
}
500 means "Internal server error" (see HTTP codes and their meaning).
It does mean that the request you sent was understood and was valid HTTP, but either there is an internal, unrelated issue, or the request you send is missing some parameter or is sending some incorrect value, and that omission/mistake causes the server logic to crash (either because it fails a validation of the request content or in a deeper, uncontrolled way).
The only way to get more specific info would be seeing the server logs (and that if the developer was careful checking parameters and logging info).
Your best option is to analize the traffic between the web browser and the server using some tool like wireshark, and then analize the traffic between your client and the server and try to spot the differences.