Java

Banco Inter OAuth2 Client Credentials

Generate an OAuth2 access token needed to consume the Inter APIs. Chilkat2 Java

import com.chilkatsoft.chilkat2.BinData;
import com.chilkatsoft.chilkat2.Cert;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Http;
import com.chilkatsoft.chilkat2.HttpRequest;
import com.chilkatsoft.chilkat2.HttpResponse;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.PrivateKey;

public class ChilkatExample {

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

        Http http = new Http();

        // First load the certificate and private key, and set as the HTTP object's client certificate.
        Cert cert = new Cert();
        try {
            cert.loadFromFile("<nome arquivo certificado>.crt");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        BinData bdPrivKey = new BinData();
        try {
            bdPrivKey.loadFile("<nome arquivo chave privada>.key");
        } catch (ChilkatException e) {
            System.out.println("Failed to load <nome");
            return;
        }

        PrivateKey privKey = new PrivateKey();
        try {
            privKey.loadAnyFormat(bdPrivKey, "");

            cert.setPrivateKey(privKey);

            http.setSslClientCert(cert);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        HttpRequest req = new HttpRequest();
        req.setHttpVerb("POST");
        req.setPath("/oauth/v2/token");
        req.setContentType("application/x-www-form-urlencoded");
        req.addParam("grant_type", "client_credentials");
        // Requested scopes in OAuth2 are typically SPACE separated.
        req.addParam("scope", "boleto-cobranca.read boleto-cobranca.write");
        req.addHeader("accept", "application/json");

        HttpResponse resp = new HttpResponse();
        try {
            http.httpReq("https://cdpj.partners.bancointer.com.br/oauth/v2/token", req, resp);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        JsonObject jResp = new JsonObject();
        resp.getBodyJson(jResp);
        jResp.setEmitCompact(false);

        System.out.println("Response Body:");
        System.out.println(jResp.emit());

        int respStatusCode = resp.getStatusCode();
        System.out.println("Response Status Code = " + respStatusCode);
        if (respStatusCode >= 400) {
            System.out.println("Response Header:");
            System.out.println(resp.getHeader());
            System.out.println("Failed.");
            return;
        }

        try {
            jResp.writeFile("qa_data/tokens/banco_inter_client_credentials.json");
        } catch (ChilkatException e) {
            System.out.println("Failed to save JSON access token file.");
            return;
        }

        System.out.println("Success.");
    }
}