Java

MercadoLibre Refresh OAuth2 Access Token

See more MercadoLibre Examples

Demonstrates how to refresh a MercadoLibre OAuth2 access token. The refresh does not require user interaction via a web browser. If an access token expires (typically with a 401 response code), a new access token can be automatically obtained by using the code in this example. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.OAuth2;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // It is assumed we previously obtained an OAuth2 access token.
        // This example loads the JSON access token file
        // saved by this example: Get MercadoLibre OAuth2 Access Token

        JsonObject jsonToken = new JsonObject();
        try {
            jsonToken.loadFile("qa_data/tokens/mercadolibre.json");
        } catch (ChilkatException e) {
            System.out.println("Failed to load mercadolibre.json");
            return;
        }

        // The access token JSON looks like this:

        // {
        //   "access_token": "APP_USR-8133606632685744-060115-93e1fd8b5e767c51c238df347bd0b288-577628017",
        //   "token_type": "bearer",
        //   "expires_in": 21600,
        //   "scope": "offline_access read write",
        //   "user_id": 577625107,
        //   "refresh_token": "TG-5ad522a286f1200006ac4ed1-577625007"
        // }

        OAuth2 oauth2 = new OAuth2();

        oauth2.setTokenEndpoint("https://api.mercadolibre.com/oauth/token");

        // Replace these with actual values.
        oauth2.setClientId("MY_MERCADOLIBRE_APP_ID");
        oauth2.setClientSecret("MY_MERCADOLIBRE_APP_SECRET");

        // Get the "refresh_token"
        oauth2.setRefreshToken(jsonToken.stringOf("refresh_token"));

        // Send the HTTP POST to refresh the access token..
        try {
            oauth2.refreshAccessToken();
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("New access token: " + oauth2.getAccessToken());
        System.out.println("New refresh token: " + oauth2.getRefreshToken());

        // Update the JSON with the new tokens.
        jsonToken.updateString("access_token", oauth2.getAccessToken());
        jsonToken.updateString("refresh_token", oauth2.getRefreshToken());

        // Save the new JSON access token response to a file.
        StringBuilder sbJson = new StringBuilder();
        jsonToken.setEmitCompact(false);
        jsonToken.emitSb(sbJson);
        sbJson.writeFile("qa_data/tokens/mercadolibre.json", "utf-8", false);

        System.out.println("OAuth2 authorization granted!");
        System.out.println("New Access Token = " + oauth2.getAccessToken());
    }
}