Improved error message when a url is not available anymore

src/main/java/de/cebitec/common/dbxref/api/AbstractResource.java

@@ -20,8 +20,6 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.net.HttpURLConnection;
 import java.net.URI;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 import org.apache.commons.io.IOUtils;
 
 /**
@@ -44,16 +42,15 @@ public abstract class AbstractResource implements Resource {
     @Override
     public String getResourceText() {
         try {
-            HttpURLConnection openConnection = (HttpURLConnection) uri.toURL().openConnection();
-            openConnection.connect();
-            int responseCode = openConnection.getResponseCode();
-            openConnection.disconnect();
+            HttpURLConnection connection = (HttpURLConnection) uri.toURL().openConnection();
+            connection.connect();
+            int responseCode = connection.getResponseCode();
+            connection.disconnect();
             if (responseCode >= 400) {
-                throw new UnsupportedOperationException("Invalid url");
+                throw new UnsupportedOperationException("Can't access " + uri + " Return code [" + responseCode + "]");
             }
         } catch (IOException ex) {
-            Logger.getLogger(AbstractResource.class.getName()).log(Level.SEVERE, null, ex);
-            throw new RuntimeException(ex);
+            throw new RuntimeException("Error accessing " + uri, ex);
         }
 
         try (InputStream stream = uri.toURL().openStream()) {