diff --git a/src/main/java/com/interplug/qcast/util/InterfaceQsp.java b/src/main/java/com/interplug/qcast/util/InterfaceQsp.java
index 26bee66e..09478684 100644
--- a/src/main/java/com/interplug/qcast/util/InterfaceQsp.java
+++ b/src/main/java/com/interplug/qcast/util/InterfaceQsp.java
@@ -40,14 +40,20 @@ public class InterfaceQsp {
       con.setRequestMethod(httpMethod.toString());
       con.setRequestProperty("Content-Type", "application/json");
       con.setDoInput(true);
-      con.setDoOutput(true); // POST 데이터를 OutputStream으로 넘겨 주겠다는 설정
       con.setUseCaches(false);
       con.setDefaultUseCaches(false);
 
-      ObjectMapper om = new ObjectMapper();
-      osw = new OutputStreamWriter(con.getOutputStream());
-      osw.write(om.writeValueAsString(requestObject)); // json 형식의 message 전달
-      osw.flush();
+      if (HttpMethod.GET.equals(httpMethod)) {
+        con.setDoOutput(false);
+      } else {
+        con.setDoOutput(true); // POST 데이터를 OutputStream으로 넘겨 주겠다는 설정
+        if (requestObject != null) {
+          ObjectMapper om = new ObjectMapper();
+          osw = new OutputStreamWriter(con.getOutputStream());
+          osw.write(om.writeValueAsString(requestObject)); // json 형식의 message 전달
+          osw.flush();
+        }
+      }
 
       sb = new StringBuilder();
       if (con.getResponseCode() == HttpURLConnection.HTTP_OK) {