Java
Java
Dynamics CRM OAuth2 Access Token
See more OAuth2 Examples
Demonstrates how to get a Microsoft Dynamics CRM OAuth2 access token from a desktop (installed) application or script.Chilkat Java Downloads
import com.chilkatsoft.*;
public class ChilkatExample {
static {
try {
System.loadLibrary("chilkat");
} catch (UnsatisfiedLinkError e) {
System.err.println("Native code library failed to load.\n" + e);
System.exit(1);
}
}
public static void main(String argv[])
{
boolean success = false;
// To further clarify, see OAuth 2.0 Authorization Flow
CkOAuth2 oauth2 = new CkOAuth2();
// This should be the port in the localhost redirect URL for your app.
// Important: Make sure the redirect URI in your Azure app registration
// is exactly "http://localhost:3017/". Don't forget the ending "/" char.
// The redirect URL would look like "http://localhost:3017/" if the port number is 3017.
oauth2.put_ListenPort(3017);
// Get the endpoints from the Azure Portal in the "endpoints" section of App Registrations..
// The DYNAMICS-ENDPOINT-GUID is a Tenant dynamics-endpoint-guid such as 1b54e7ee-d61b-4f12-a621-a6b2805b98c2
oauth2.put_AuthorizationEndpoint("https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/authorize");
oauth2.put_TokenEndpoint("https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/token");
// Replace these with actual values.
oauth2.put_ClientId("DYNAMICS-CRM-CLIENT-ID");
oauth2.put_ClientSecret("DYNAMICS-CRM-SECRET-KEY");
oauth2.put_Resource("https://mydynamicsdomain.api.crm.dynamics.com");
oauth2.put_RedirectAllowHtml("<html><body><p>Thank you for granting access.</p></bod></html>");
oauth2.put_RedirectDenyHtml("<html><body><p>Maybe next time...</p></bod></html>");
// Begin the OAuth2 Authorization code flow. This returns a URL that should be loaded in a browser.
String url = oauth2.startAuth();
if (oauth2.get_LastMethodSuccess() != true) {
System.out.println(oauth2.lastErrorText());
return;
}
// We can pre-check the URL by sending a GET to catch any up-front errors.
// If we receive JSON with an error in response, then we don't proceed any farther.
// If we receive an HTML response, and the response status = 200, then all should be OK.
// We can proceed by displaying an interactive browser loaded with the url.
CkHttp http = new CkHttp();
CkStringBuilder sbPreCheck = new CkStringBuilder();
success = http.QuickGetSb(url,sbPreCheck);
if ((http.get_LastStatus() != 200) || (sbPreCheck.StartsWith("{",true) != true)) {
System.out.println("JSON Error Response:");
System.out.println(sbPreCheck.getAsString());
return;
}
// If the HTTP request itself failed, then examine the error.
if (success == false) {
System.out.println(http.lastErrorText());
return;
}
// OK.. the pre-flight check seems OK, go ahead with getting the interactive user authorization..
// Launch the default browser on the system and navigate to the url.
// The LaunchBrowser method was added in Chilkat v10.1.2.
success = oauth2.LaunchBrowser(url);
if (success == false) {
System.out.println(oauth2.lastErrorText());
return;
}
// Wait for the user to approve or deny authorization in the browser.
int numMsWaited = 0;
while ((numMsWaited < 90000) && (oauth2.get_AuthFlowState() < 3)) {
oauth2.SleepMs(100);
numMsWaited = numMsWaited+100;
}
// If the browser does not respond within the specified time, AuthFlowState will be:
//
// 1: Waiting for Redirect – The OAuth2 background thread is waiting for the browser's redirect request.
// 2: Waiting for Final Response – The thread is awaiting the final access token response.
// In either case, cancel the background task initiated by StartAuth.
if (oauth2.get_AuthFlowState() < 3) {
oauth2.Cancel();
System.out.println("No response from the browser!");
return;
}
// Check AuthFlowState to determine if authorization was granted, denied, or failed:
//
// 3: Success – OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
// 4: Access Denied – OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
// 5: Failure – OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.
if (oauth2.get_AuthFlowState() == 5) {
System.out.println("OAuth2 failed to complete.");
System.out.println(oauth2.failureInfo());
return;
}
if (oauth2.get_AuthFlowState() == 4) {
System.out.println("OAuth2 authorization was denied.");
System.out.println(oauth2.accessTokenResponse());
return;
}
if (oauth2.get_AuthFlowState() != 3) {
System.out.println("Unexpected AuthFlowState:" + oauth2.get_AuthFlowState());
return;
}
System.out.println("OAuth2 authorization granted!");
System.out.println("Access Token = " + oauth2.accessToken());
// Get the full JSON response:
CkJsonObject json = new CkJsonObject();
json.Load(oauth2.accessTokenResponse());
json.put_EmitCompact(false);
// The JSON response looks like this:
// {
// "token_type": "Bearer",
// "scope": "user_impersonation",
// "expires_in": "3599",
// "ext_expires_in": "0",
// "expires_on": "1524783438",
// "not_before": "1524779538",
// "resource": "https://mydomain.api.crm.dynamics.com",
// "access_token": "...",
// "refresh_token": "...",
// "id_token": "..."
// }
// If an "expires_on" member does not exist, then add the JSON member by
// getting the current system date/time and adding the "expires_in" seconds.
// This way we'll know when the token expires.
if (json.HasMember("expires_on") != true) {
CkDateTime dtExpire = new CkDateTime();
dtExpire.SetFromCurrentSystemTime();
dtExpire.AddSeconds(json.IntOf("expires_in"));
json.AppendString("expires_on",dtExpire.getAsUnixTimeStr(false));
}
System.out.println(json.emit());
// Save the JSON to a file for future requests.
CkFileAccess fac = new CkFileAccess();
fac.WriteEntireTextFile("qa_data/tokens/dynamicsCrm.json",json.emit(),"utf-8",false);
}
}