音频样例配置下发，源文件时长不能超过120s的错误信息提示

src/main/java/com/nis/web/controller/configuration/ntc/AvController.java

@@ -302,7 +302,8 @@ public class AvController extends BaseController {
 						addMessage(redirectAttributes, "error", "exceeds_duration_limit");
 						logger.error("The duration of uploaded files exceeds the limit(" + Constants.AV_DURATION_LIMIT
 								+ "s).");
-						throw new MultiPartNewException(this.getMsgProp().getProperty("exceeds_duration_limit"));
+						throw new MultiPartNewException(this.getMsgProp().getProperty("exceeds_duration_limit")+"("+ Constants.AV_DURATION_LIMIT
+								+ "s)");
 					}
 
 				}