问使用Rest API和JAVA进行Salesforce身份验证

EN

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.util.EntityUtils;
import org.apache.http.client.ClientProtocolException;
import org.json.JSONObject;
import org.json.JSONTokener;
import org.json.JSONException;

public class OrderProcessing extends HttpServlet {
    private static final long serialVersionUID = 1L;
    static final String PASS = "XXXXXXX";
    static final String SecurityToken = "XXXXXXXXXXXX";
    static final String USERNAME = "adminuser@.salesforce.com";
    static final String PASSWORD = PASS + SecurityToken;
    static final String LOGINURL = "https://login.salesforce.com";
    static final String GRANTSERVICE = "/services/oauth2/token?grant_type=password";
    static final String CLIENTID = "ConsumerKeyFromSalesfoceConnectedApps";
    static final String CLIENTSECRET = "ConsumerSecretFromSalesforceConnectedApps";

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        HttpClient httpclient = HttpClientBuilder.create().build();
        String loginURL = LOGINURL + GRANTSERVICE + "&client_id=" + CLIENTID + "&client_secret=" + CLIENTSECRET
                + "&username=" + USERNAME + "&password=" + PASSWORD;

        HttpPost httpPost = new HttpPost(loginURL);
        HttpResponse resp = null;

        try {
            resp = httpclient.execute(httpPost);
        } catch (ClientProtocolException cpException) {
            cpException.printStackTrace();
        } catch (IOException ioException) {
            ioException.printStackTrace();
        }

        final int statusCode = resp.getStatusLine().getStatusCode();
        if (statusCode != HttpStatus.SC_OK) {
            System.out.println("Error authenticating to Force.com: " + statusCode);
            return;
        }

        String getResult = null;
        try {
            getResult = EntityUtils.toString(resp.getEntity());
        } catch (IOException ioException) {
            ioException.printStackTrace();
        }

        JSONObject jsonObject = null;
        String loginAccessToken = null;
        String loginInstanceUrl = null;
        try {
            jsonObject = (JSONObject) new JSONTokener(getResult).nextValue();
            loginAccessToken = jsonObject.getString("access_token");
            loginInstanceUrl = jsonObject.getString("instance_url");
        } catch (JSONException jsonException) {
            jsonException.printStackTrace();
        }

        System.out.println(resp.getStatusLine());
        System.out.println("Successful login");
        System.out.println("  instance URL: " + loginInstanceUrl);
        System.out.println("  access token/session ID: " + loginAccessToken);

        httpPost.releaseConnection();
    }
}