Merge pull request #109 from microsoftgraph/utf-issue-fix

Utf issue fix

Author: NakulSabharwal

src/main/java/com/microsoft/graph/http/DefaultHttpProvider.java

@@ -39,6 +39,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.io.UnsupportedEncodingException;
 import java.net.URL;
 import java.util.List;
 import java.util.Map;
@@ -58,6 +59,11 @@ public class DefaultHttpProvider implements IHttpProvider {
      * The content type for JSON responses
      */
     static final String JSON_CONTENT_TYPE = "application/json";
+    
+    /**
+     * The encoding type for getBytes
+     */
+    static final String JSON_ENCODING = "UTF-8";
 
     /**
      * The serializer
@@ -254,7 +260,7 @@ private <Result, Body, DeserializeType> Result sendRequestInternal(final IHttpRe
                 } else {
                     logger.logDebug("Sending " + serializable.getClass().getName() + " as request body");
                     final String serializeObject = serializer.serializeObject(serializable);
-                    bytesToWrite = serializeObject.getBytes();
+                    bytesToWrite = serializeObject.getBytes(JSON_ENCODING);
 
                     // If the user hasn't specified a Content-Type for the request
                     if (!hasHeader(requestHeaders, CONTENT_TYPE_HEADER_NAME)) {
@@ -341,6 +347,11 @@ private <Result, Body, DeserializeType> Result sendRequestInternal(final IHttpRe
             final boolean shouldLogVerbosely = logger.getLoggingLevel() == LoggerLevel.DEBUG;
             logger.logError("Graph service exception " + ex.getMessage(shouldLogVerbosely), ex);
             throw ex;
+        } catch (final UnsupportedEncodingException ex) {
+        	final ClientException clientException = new ClientException("Unsupported encoding problem: ",
+                    ex);
+            logger.logError("Unsupported encoding problem: " + ex.getMessage(), ex);
+            throw clientException;
         } catch (final Exception ex) {
             final ClientException clientException = new ClientException("Error during http request",
                     ex);
@@ -401,10 +412,10 @@ private <Result> Result handleJsonResponse(final InputStream in, Map<String, Lis
      * @param clazz           the type of the response object
      * @return                the JSON object
      */
-    private <Result> Result handleEmptyResponse(Map<String, List<String>> responseHeaders, final Class<Result> clazz) {
+    private <Result> Result handleEmptyResponse(Map<String, List<String>> responseHeaders, final Class<Result> clazz) 
+    		throws UnsupportedEncodingException{
     	//Create an empty object to attach the response headers to
-        InputStream in = new ByteArrayInputStream("{}".getBytes());
-        
+    	InputStream in = new ByteArrayInputStream("{}".getBytes(JSON_ENCODING));
     	return handleJsonResponse(in, responseHeaders, clazz);
     }