Workaround issue #6 . Return empty avatar if download fails.

src/main/java/com/jayfella/website/core/ImageDownloader.java

@@ -7,7 +7,10 @@ import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.net.URL;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 public class ImageDownloader {
+    private static final Logger log = LoggerFactory.getLogger(ImageDownloader.class);
 
     public static byte[] downloadUiAvatar(
             int size,
@@ -43,40 +46,38 @@ public class ImageDownloader {
     }
 
     public static byte[] downloadImage(String urlString) throws IOException {
+        try{
+            URL url = new URL(urlString);
 
-        URL url = new URL(urlString);
+            BufferedImage imageIn = ImageIO.read(url);
 
-        BufferedImage imageIn;
+            BufferedImage imageOut = new BufferedImage(
+                    imageIn.getWidth(),
+                    imageIn.getHeight(),
+                    BufferedImage.TYPE_INT_RGB);
 
-        try {
-            imageIn = ImageIO.read(url);
-        }
-        catch (IOException ex) {
-            ex.printStackTrace();
-            return null;
-        }
-
-        if (imageIn == null) {
-            System.out.println("Downloaded UIAvatar image is null");
-            return null;
-        }
-
-        BufferedImage imageOut = new BufferedImage(
-                imageIn.getWidth(),
-                imageIn.getHeight(),
-                BufferedImage.TYPE_INT_RGB);
+            imageOut.createGraphics().drawImage(imageIn, 0, 0, Color.WHITE, null);
 
-        imageOut.createGraphics().drawImage(imageIn, 0, 0, Color.WHITE, null);
+            byte[] imageData;
 
-        byte[] imageData;
-
-        try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            ImageIO.write(imageOut, "jpg", baos);
+            imageData = baos.toByteArray();
+            
+            return imageData;
+        }catch(Exception e){
+            log.info( "Can't download "+urlString+". Use empty image.");
+            e.printStackTrace();
+             BufferedImage imageOut = new BufferedImage(
+            64,
+            64,
+            BufferedImage.TYPE_INT_RGB);
+            byte[] imageData;
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
             ImageIO.write(imageOut, "jpg", baos);
             imageData = baos.toByteArray();
+            return imageData;
         }
-
-        return imageData;
-
     }
 
 }