Authorization Bearer token in HttpClient?

107,435

Solution 1

I have come across similar situation, I was able to do it by following way, I hope this will help others.

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpURLConnectionExample {


    public static void main(String[] args) throws Exception {

        // Sending get request
        URL url = new URL("http://example-url");
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();

        conn.setRequestProperty("Authorization","Bearer "+" Actual bearer token issued by provider.");
        //e.g. bearer token= eyJhbGciOiXXXzUxMiJ9.eyJzdWIiOiPyc2hhcm1hQHBsdW1zbGljZS5jb206OjE6OjkwIiwiZXhwIjoxNTM3MzQyNTIxLCJpYXQiOjE1MzY3Mzc3MjF9.O33zP2l_0eDNfcqSQz29jUGJC-_THYsXllrmkFnk85dNRbAw66dyEKBP5dVcFUuNTA8zhA83kk3Y41_qZYx43T

        conn.setRequestProperty("Content-Type","application/json");
        conn.setRequestMethod("GET");


        BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        String output;

        StringBuffer response = new StringBuffer();
        while ((output = in.readLine()) != null) {
            response.append(output);
        }

        in.close();
        // printing result from response
        System.out.println("Response:-" + response.toString());

    }
}

Solution 2

I was trying to do something similar using HttpClient and I got it working by making a small change as below.

post.setHeader(HttpHeaders.CONTENT_TYPE,"application/json");
post.setHeader(HttpHeaders.AUTHORIZATION, "Bearer " + finalToken);
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107,435
user_mda
Author by

user_mda

Updated on January 21, 2022

Comments

  • user_mda
    user_mda about 2 years

    I am trying to access an API using an oauth2 authorization token in Java Here is the client code

    DefaultHttpClient httpclient = new DefaultHttpClient(); 
    HttpPost post = new HttpPost("http://res-api");
    post.setHeader("Content-Type","application/json");
    post.setHeader("Authorization", "Bearer " + finalToken);
    
    JSONObject json = new JSONObject();
    // json.put ...
    // Send it as request body in the post request 
    
    StringEntity params = new StringEntity(json.toString());
    post.setEntity(params);
    
    HttpResponse response = httpclient.execute(post);
    httpclient.getConnectionManager().shutdown();
    

    This returns a 401.

    An equivalent curl command works with no issues with the same token:

    curl -H "Content-Type:application/json" -H "Authorization:Bearer randomToken" -X POST -d @example.json http://rest-api
    

    I tried logging out the request and it looks like the authorization is set correctly

    DEBUG [2016-06-28 20:51:13,655] org.apache.http.headers: >> Authorization: Bearer authRandomToKen; Path=/; Domain=oauth2-server; Expires=Wed, 29 Jun 2016 20:51:13 UTC
    

    I tried out the curl command by copy-pasting this same token and t works fine

    Although I also see this line

    DEBUG [2016-06-28 20:51:13,658] org.apache.http.impl.client.DefaultHttpClient: Response contains no authentication challenges