Use "utf-8" encoding for StringEntity

Author: akankari

src/main/java/net/authorize/util/HttpClient.java

@@ -85,7 +85,7 @@ private static HttpPost createHttpPost(Environment env, Transaction transaction)
 			httpPost.getParams().setIntParameter(HttpConnectionParams.SO_TIMEOUT, httpReadTimeout);
 
 		    httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");
-		    httpPost.setEntity(new StringEntity(transaction.toNVPString()));
+		    httpPost.setEntity(new StringEntity(transaction.toNVPString(), HTTP.UTF_8));
 		} else if (transaction instanceof net.authorize.arb.Transaction ||
 			    transaction instanceof net.authorize.cim.Transaction ||
 			    transaction instanceof net.authorize.reporting.Transaction) {
@@ -100,7 +100,7 @@ private static HttpPost createHttpPost(Environment env, Transaction transaction)
               httpPost.getParams().setIntParameter(HttpConnectionParams.SO_TIMEOUT, httpReadTimeout);
 
               httpPost.setHeader("Content-Type", "text/xml; charset=utf-8");
-			  httpPost.setEntity(new StringEntity(transaction.toXMLString()));
+			  httpPost.setEntity(new StringEntity(transaction.toXMLString(), HTTP.UTF_8));
 		}
 
 		return httpPost;

src/main/java/net/authorize/util/HttpUtility.java

@@ -21,6 +21,7 @@
 import org.apache.http.entity.StringEntity;
 import org.apache.http.params.CoreProtocolPNames;
 import org.apache.http.params.HttpConnectionParams;
+import org.apache.http.protocol.HTTP;
 
 import net.authorize.Environment;
 import net.authorize.api.contract.v1.ANetApiRequest;
@@ -81,7 +82,7 @@ static HttpPost createPostRequest(Environment env, ANetApiRequest request) throw
 
 			  String xmlRequest = XmlUtility.getXml(request);
 			  logger.debug(String.format("Request: '%s%s%s'", LogHelper.LineSeparator, xmlRequest, LogHelper.LineSeparator));
-			  httpPost.setEntity(new StringEntity(xmlRequest));
+			  httpPost.setEntity(new StringEntity(xmlRequest, HTTP.UTF_8));
 		}
 
 		return httpPost;