Develop Reference

Trying to get an Access Token from Dwolla restful api

Im having trouble getting an access token for the sandbox environment.
Im following this guide for authenticating: OAuth
So when i create my request, following this guide, i get the following response from the api:
{"error":"access_denied","error_description":"Invalid application credentials."}
Im using key for mf client ID and secret as my client secret as per the instructions.
Here is the code Im using:
public static void main(String[] args) {
try {
URL url = new URL("https://www.dwolla.com/oauth/v2/token");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("client_id", "<Key>");
conn.setRequestProperty("client_secret", "<Secret>");
conn.setRequestProperty("grant_type", "client_credentials");
conn.setDoInput(true);
conn.setDoOutput(true);
System.out.println("Message:" + conn.getResponseMessage());
BufferedReader br = new BufferedReader(new InputStreamReader(
(conn.getInputStream())));
String output;
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
System.out.println(output);
}
conn.disconnect();
} catch (MalformedURLException ex) {
Logger.getLogger(PaymentTest.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(PaymentTest.class.getName()).log(Level.SEVERE, null, ex);
}
}

I was able to get an access token finally. My problem is first of all the above code uses client_id and client_secret as header params. These need to go in the body of the request.
My second problem is that I used the wrong content type for the message I was sending.
Here is the code that worked for me:
URL url = new URL("https://sandbox.dwolla.com/oauth/v2/token");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/json");
conn.setDoInput(true);
conn.setDoOutput(true);
String data = "";
JSONObject jsonObj = new JSONObject();
jsonObj.put("client_id", "<Your Client ID>");
jsonObj.put("client_secret", "<Your Client Secret>");
jsonObj.put("grant_type", "client_credentials");
data = jsonObj.toString();
System.out.println("data = " + data);
byte[] outputInBytes = data.getBytes("UTF-8");
OutputStream os = conn.getOutputStream();
os.write( outputInBytes );
os.close();
System.out.println("Message:" + conn.getResponseMessage());
BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
String output;
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
System.out.println(output);
}
conn.disconnect();

Querying Data from SUGARCRM

I have SugarCRM trail account. I can able to get Authenticate and get the AccessToken by the following url.
https://xxxxxxx.trial.sugarcrm.eu/rest/v10/oauth2/token
Method : POST
POST Data : postData: { "grant_type":"password", "client_id":"sugar", "client_secret":"", "username":"admin", "password":"Admin123", "platform":"base" }
Code I used to get the AccessToken
public static String getAccessToken() throws JSONException {
HttpURLConnection connection = null;
JSONObject requestBody = new JSONObject();
requestBody.put("grant_type", "password");
requestBody.put("client_id", CLIENT_ID);
requestBody.put("client_secret", CLIENT_SECRET);
requestBody.put("username", USERNAME);
requestBody.put("password", PASSWORD);
requestBody.put("platform", "base");
try {
URL url = new URL(HOST_URL + AUTH_URL);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/json");
connection.setUseCaches(false);
connection.setDoOutput(true);
connection.connect();
BufferedWriter out = new BufferedWriter(new OutputStreamWriter(connection.getOutputStream()));
out.write(requestBody.toString());
out.close();
int responseCode = connection.getResponseCode();
BufferedReader in = new BufferedReader(
new InputStreamReader(connection.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
JSONObject jObject = new JSONObject(response.toString());
if(!jObject.has("access_token")){
return null;
}
String accessToken = jObject.getString("access_token");
return accessToken;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
Now I have retrive Leads from CRM using rest API I can not able to find the appropriate method and Url to do the thing.
I can see the list rest of API's from /help but I cant understand what should be my module name and what I have to :record and how do I pass my access token for authentication.
Can anyone please help me?

The module name is simply the module you which to fetch records from, so in your case you'll want to do a GET request to rest/v10/Leads for a list of Leads. If you want to fetch a specific Lead you replace :record with the id of a Lead - for example: GET rest/v10/Leads/LEAD-ID-HERE
SugarCRM's documentation has a lot of relevant information that might not be included in /help plus working examples.
http://support.sugarcrm.com/Documentation/Sugar_Developer/Sugar_Developer_Guide_7.8/Integration/Web_Services/v10/Endpoints/module_GET/
http://support.sugarcrm.com/Documentation/Sugar_Developer/Sugar_Developer_Guide_7.8/Integration/Web_Services/v10/Examples/PHP/How_to_Fetch_Related_Records/

You need to include your retrieved token into an OAuth-Token header for subsequent requests, and then just use the module name as the endpoint i.e. in your case: "rest/v10/Leads" and call the GET method to retrieve them. Try something akin to this:
String token = getAccessToken();
HttpURLConnection connection = null;
try {
URL url = new URL(HOST_URL + "/rest/v10/Leads");
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setRequestProperty("Content-Type", "application/json");
connection.setRequestProperty("OAuth-Token", token);
connection.setUseCaches(false);
connection.setDoOutput(true);
connection.connect();
int responseCode = connection.getResponseCode();
BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
JSONObject jObject = new JSONObject(response.toString());
System.out.println(jObject);
} catch (Exception e) {
e.printStackTrace();
}
In the case you want to filter it down to specific id's to cut down on the amount of returned data, you can specify it after the module name i.e. "rest/v10/Leads/{Id}"

Java code to login to website which contains emailId in page and password in another page

I want to write a Java application, which can login to a website For example, www.tumblr.com/login. Basically this web page asks for an email address on the first page and then would take the user to the next page to enter the password.
Can someone please help me with a sample Java code for this problem?

You might want to look at HttpURLConnection
public static String executePost(String targetURL, String urlParameters) {
HttpURLConnection connection = null;
try {
//Create connection
URL url = new URL(targetURL);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
connection.setRequestProperty("Content-Length",
Integer.toString(urlParameters.getBytes().length));
connection.setRequestProperty("Content-Language", "en-US");
connection.setUseCaches(false);
connection.setDoOutput(true);
//Send request
DataOutputStream wr = new DataOutputStream (
connection.getOutputStream());
wr.writeBytes(urlParameters);
wr.close();
//Get Response
InputStream is = connection.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
StringBuilder response = new StringBuilder(); // or StringBuffer if Java version 5+
String line;
while ((line = rd.readLine()) != null) {
response.append(line);
response.append('\r');
}
rd.close();
return response.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
if (connection != null) {
connection.disconnect();
}
}
Code example found here

java.io.IOException: Server returned HTTP response code: 411

I am trying to post to a server the following URL:
http://localhost:3000/webserver/query?q=AddData(123,2015)
Using the code below, the server is returning error 411.
HttpURLConnection connection = null;
try {
//Create connection
URL url = new URL(targetURL);
connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/xml");
connection.setRequestProperty("Authorization", "Basic " + Base64.encode("administrator:"));
connection.setRequestProperty("Content-Length", "0");
connection.setDoOutput(true);
//Get Response
InputStream is = connection.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
while((line = rd.readLine()) != null) {
System.out.println(line);
}
rd.close();
}
catch (Exception e) {
e.printStackTrace();
}
finally {
if(connection != null) connection.disconnect();
}
I know that error 411 is an invalid Content-Length method. I have tried giving the Content-Length the length of the URL but the error persisted.
Can you please help with this issue?

Send post via CXF

I'm building webservice based on CXF and now I'm sending variables into some URL by code:
url = new URL(urlSSO + "/user");
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
connection.setRequestProperty("Content-Length","" + Integer.toString(urlParameters.getBytes().length));
connection.setRequestProperty("Content-Language", "en-EN");
connection.setUseCaches(false);
connection.setDoInput(true);
connection.setDoOutput(true);
// Send request
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
// Get Response
InputStream is = connection.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
StringBuffer response = new StringBuffer();
while ((line = rd.readLine()) != null) {
response.append(line);
response.append('\r');
}
rd.close();
userInfo = response.toString();
if (userInfo != null) {
//do something
} else {
// some problem with user
return "home";
}
But I'm wondering if there is some more easy way to do this with CXF?
I mean, maybe CXF has something built-in?
I think that this code can take a lot of time to send and get response from other servlet... This CXF webservice will be put on servicemix, so I need something very fast to send variables