GoogleNetHttpTransport.newTrustedTransport() returning Null

问题

I'm trying to load Google credential from json file. So before that, I knew, we have to get the default Google transport. Ref from. But it always gives null. Is anybody faced this issue?

This is my snippet:

try {
        JSON_FACTORY =  JacksonFactory.getDefaultInstance();
        HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();

    } catch (Throwable t) {
        Utilities.writeToLogFile(Constants.LOG_ERROR_LEVEL, ".. EXCEPTION" + t.toString());
    }

This always ends with catch part. says as below

... EXCEPTIONjava.security.KeyStoreException: java.security.NoSuchAlgorithmException: KeyStore JKS implementation not found

回答1:

Finally, I've found an answer on google issue tracker.

Replace

HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();

with

HTTP_TRANSPORT = new com.google.api.client.http.javanet.NetHttpTransport()

But don't know, how it's working.

回答2:

You can also use. From Tasks API sample by Google

AndroidHttp.newCompatibleTransport();

来源：https://stackoverflow.com/questions/39248453/googlenethttptransport-newtrustedtransport-returning-null