Comments on: RestTemplate, the Spring way of accessing RESTful services

By: Arul

Arul — Fri, 22 Oct 2010 01:20:15 +0000

Hi Mack, Hari,

I believe you are not setting the correct Twitter credentials. The credentials are set in line numbers 19 and 20 in applicationContext.xml. I have highlighted them above. This should fix the 401 error you are seeing.

-Arul

By: Hari

Hari — Thu, 21 Oct 2010 07:07:32 +0000

Hi,

Getting the below error while executing the above code.

POST request for “https://twitter.com/statuses/update.xml” resulted in 401 (Unauthorized); invoking error handler
Exception in thread “main” org.springframework.web.client.HttpClientErrorException: 401 Unauthorized

Please suggest how twitter credentials can be passed to the code?

Thanks in advance very much!

By: mack

mack — Thu, 14 Oct 2010 08:25:07 +0000

i got this error

Exception in thread “main” org.springframework.web.client.HttpClientErrorException: 401 Unauthorized
at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:69)
at org.springframework.web.client.RestTemplate.handleResponseError(RestTemplate.java:486)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:443)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:401)
at org.springframework.web.client.RestTemplate.postForLocation(RestTemplate.java:257)
at twitter.TwitterClient.setStatus(TwitterClient.java:40)
at twitter.Spring3RestClientTest.main(Spring3RestClientTest.java:13)

By: Fray

Fray — Tue, 22 Sep 2009 19:05:35 +0000

Thanks…wow it is very helpful blog for SSL & resttemplate stuff..

Very helpful info.

By: Arul

Arul — Mon, 21 Sep 2009 20:01:17 +0000

Hi Fray, Nice to see you got it working with SSL. Btw, I just blogged about accessing SSL configured resources using RestTemplate here. You may want to look at the MappingJacksonHttpMessageConverter which supports "application/json". Cheers, Arul

By: Fray

Fray — Mon, 21 Sep 2009 17:18:32 +0000

Arul
I got the SSL work, thanks to your links and direction.

Once more question: I format the return from Rest Servie as a json. In spring 3M4, there is no coverter for Json, I saw you using the FormHttpMessageConverter. How would you handle when stuff return are in JSON format

again greatly appreciated

By: Arul

Arul — Fri, 18 Sep 2009 05:31:44 +0000

Hi Fray,

No problem.

You may want to look at the Jersey client sample used to access a secured resource. This would give you an idea on how to setup TrustManager and KeyManager on the client.

Cheers,
Arul

By: Fray

Fray — Thu, 17 Sep 2009 13:25:18 +0000

Thanks Arul, that helps. I am looking into it .
Greatly appreciated your direction and time to help out.

By: Arul

Arul — Thu, 17 Sep 2009 02:47:19 +0000

Hi Fray,

I did receive your email. I did not had a chance to respond to your email yet.

You may want to look at the SSL Guide for Commons HTTP Client. You need to configure the HttpClient from RestTemplate with an SSLSocketFactory.

HTH,
Arul

By: Fray

Fray — Wed, 16 Sep 2009 13:39:27 +0000

Hi again,
Thnks for your help. I have email you via the Contact me, not sure if you got it.
I have following your blog sample, how would you handle like passing all the cert key information including password, truststore, keystore more likely doing the SSL info using RestTemplate.

If you got any ideas, please help.