StackExchangeExample.java

package com.github.scribejava.apis.examples;

import java.util.Random;
import java.util.Scanner;

import com.github.scribejava.apis.StackExchangeApi;
import com.github.scribejava.core.builder.ServiceBuilder;
import com.github.scribejava.core.model.OAuth2AccessToken;
import com.github.scribejava.core.model.OAuthRequest;
import com.github.scribejava.core.model.Response;
import com.github.scribejava.core.model.Verb;
import com.github.scribejava.core.oauth.OAuth20Service;
import java.io.IOException;
import java.util.concurrent.ExecutionException;

public final class StackExchangeExample {

    private static final String NETWORK_NAME = "Stack Exchange";
    private static final String PROTECTED_RESOURCE_URL = "https://api.stackexchange.com/2.2/me";

    private StackExchangeExample() {
    }

    public static void main(String... args) throws IOException, InterruptedException, ExecutionException {
        // Replace these with your client id, secret, application key and
        // optionally site name
        final String clientId = "your client id";
        final String clientSecret = "your client secret";
        final String key = "your client key";
        // Enter one of Stack Exchange site names the user has account with.
        final String site = "stackoverflow";
        final String secretState = "secret" + new Random().nextInt(999_999);
        final OAuth20Service service = new ServiceBuilder()
                .apiKey(clientId)
                .apiSecret(clientSecret)
                .state(secretState)
                .callback("http://www.example.com/oauth_callback/")
                .build(StackExchangeApi.instance());
        final Scanner in = new Scanner(System.in, "UTF-8");

        System.out.println("=== " + NETWORK_NAME + "'s OAuth Workflow ===");
        System.out.println();

        // Obtain the Authorization URL
        System.out.println("Fetching the Authorization URL...");
        final String authorizationUrl = service.getAuthorizationUrl();
        System.out.println("Got the Authorization URL!");
        System.out.println("Now go and authorize ScribeJava here:");
        System.out.println(authorizationUrl);
        System.out.println("And paste the authorization code here");
        System.out.print(">>");
        final String code = in.nextLine();
        System.out.println();

        System.out.println("And paste the state from server here. We have set 'secretState'='" + secretState + "'.");
        System.out.print(">>");
        final String value = in.nextLine();
        if (secretState.equals(value)) {
            System.out.println("State value does match!");
        } else {
            System.out.println("Ooops, state value does not match!");
            System.out.println("Expected = " + secretState);
            System.out.println("Got      = " + value);
            System.out.println();
        }

        // Trade the Request Token and Verfier for the Access Token
        System.out.println("Trading the Request Token for an Access Token...");
        final OAuth2AccessToken accessToken = service.getAccessToken(code);
        System.out.println("Got the Access Token!");
        System.out.println("(if your curious it looks like this: " + accessToken
                + ", 'rawResponse'='" + accessToken.getRawResponse() + "')");
        System.out.println();

        // Now let's go and ask for a protected resource!
        System.out.println("Now we're going to access a protected resource...");
        final OAuthRequest request = new OAuthRequest(Verb.GET,
                PROTECTED_RESOURCE_URL + "?site=" + site + "&key=" + key);
        service.signRequest(accessToken, request);
        final Response response = service.execute(request);
        System.out.println("Got it! Lets see what we found...");
        System.out.println();
        System.out.println(response.getCode());
        System.out.println(response.getBody());

        System.out.println();
        System.out.println("Thats it man! Go and build something awesome with ScribeJava! :)");

    }
}