CODEWITHSUNDEEP
javagoogle-app-enginessl
siamii
siamii

Reputation: 24134

How to make an HTTPS call on App Engine

My app queries other web services via SSL. I've used Apache HttpClient to create https POST calls on my server to other web services. When I deployed my app to App Engine I got the following error:

java.lang.NoClassDefFoundError: javax.net.ssl.KeyManagerFactory is a restricted class. 
Please see the Google App Engine developer's guide for more details.

My question is, how can I make HTTPS calls on Google App engine?

Upvotes: 3

Views: 1090

Answers (2)

Benjamin Muschko
Benjamin Muschko

Reputation: 33476

Apache HttpClient is not supported out-of-the-box by App Engine. You will have to write a custom ConnectionManager that wraps UrlFetch. This post explains it pretty well and provides you with sample code. I used that code successfully on App Engine before.

Upvotes: 4

Kal
Kal

Reputation: 24910

You can just use a URL class to make HTTPS connections on the app-engine.

Something like this --

URL url = new URL(yourHttpsURL);
BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));
StringBuilder responseBody = new StringBuilder();
String line;

while ((line = reader.readLine()) != null)
    responseBody.append(line);

reader.close();

The app engine also supports host validation using the FetchOptions class in the low-level API.

Upvotes: 1

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