Java

Download Google Contact Photo

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Demonstrates how to download Google Contact's photo. Chilkat2 Java

import com.chilkatsoft.chilkat2.AuthGoogle;
import com.chilkatsoft.chilkat2.BinData;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Rest;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // --------------------------------------------------------------------------------------------------------
        // Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
        // Once connected, the REST object may be re-used for many REST API calls.
        // (It's a good idea to put the connection setup code in a separate function/subroutine.)
        // --------------------------------------------------------------------------------------------------------

        // It is assumed we previously obtained an OAuth2 access token.
        // This example loads the JSON access token file
        // saved by this example: Get Google Contacts OAuth2 Access Token

        JsonObject jsonToken = new JsonObject();
        try {
            jsonToken.loadFile("qa_data/tokens/googleContacts.json");
        } catch (ChilkatException e) {
            System.out.println("Failed to load googleContacts.json");
            return;
        }

        AuthGoogle gAuth = new AuthGoogle();
        gAuth.setAccessToken(jsonToken.stringOf("access_token"));

        Rest rest = new Rest();

        // Connect using TLS.
        boolean bAutoReconnect = true;
        rest.connect("www.google.com", 443, true, bAutoReconnect);

        // Provide the authentication credentials (i.e. the access token)
        rest.setAuthGoogle(gAuth);

        // ----------------------------------------------
        // OK, the REST connection setup is completed..
        // ----------------------------------------------

        // To get the photo, send the following:

        //     GET /m8/feeds/photos/media/default/contactId

        rest.addHeader("GData-Version", "3.0");

        StringBuilder sbPath = new StringBuilder();
        // Get the photo for the contact having contactId = "1ea2e4fe0ef24e09"
        String contactId = "1ea2e4fe0ef24e09";
        sbPath.setString("/m8/feeds/photos/media/default/{contactId}");
        int numReplacements = sbPath.replace("{contactId}", contactId);

        BinData imageData = new BinData();
        try {
            rest.fullRequestNoBodyBd("GET", sbPath.getAsString(), imageData);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // A 404 response indicates the contact has no photo.
        // (We could've first fetched the contact information, parsed out the
        // photo etag, and then if no photo etag existed, we'd know the contact has no
        // photo.  Or... we can just try to download the photo and if a 404 is received,
        // we know there's no photo.  Much simpler.)
        if (rest.getResponseStatusCode() == 404) {
            System.out.println("This contact has no photo.");
            return;
        }

        // A successful response will have a status code equal to 200.
        if (rest.getResponseStatusCode() != 200) {
            // If the response was not successful, then the response body
            // does not contain image data.  Instead it contains XML.
            StringBuilder sbResponseBody = new StringBuilder();
            sbResponseBody.appendBd(imageData, "utf-8", 0, 0);

            System.out.println("response status code = " + rest.getResponseStatusCode());
            System.out.println("response status text = " + rest.getResponseStatusText());
            System.out.println("response header: " + rest.getResponseHeader());
            System.out.println("response body: " + sbResponseBody.getAsString());
            System.out.println("request startline: " + rest.getLastRequestStartLine());
            System.out.println("request header: " + rest.getLastRequestHeader());
            return;
        }

        // Examine the content-type in the response header so we know what file
        // extension to use (.jpg, .png, etc.)
        StringBuilder sbContentType = new StringBuilder();
        sbContentType.append(rest.responseHdrByName("Content-Type"));

        if (sbContentType.contentsEqual("image/jpeg", false)) {
            imageData.writeFile("qa_output/contact_photo.jpg");
        }

        if (sbContentType.contentsEqual("image/png", false)) {
            imageData.writeFile("qa_output/contact_photo.png");
        }

        System.out.println("Content-Type: " + sbContentType.getAsString());
        System.out.println("Success.");
    }
}