fix bug https://github.com/AriaLyy/Aria/issues/703

fix bug https://github.com/AriaLyy/Aria/issues/702
优化异常提示

PublicComponent/src/main/java/com/arialyy/aria/exception/AriaGroupException.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2016 AriaLyy(https://github.com/AriaLyy/Aria)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.arialyy.aria.exception;
+
+public class AriaGroupException extends AriaException {
+  private static final String FTP_EXCEPTION = "Aria Group Exception:";
+
+  public AriaGroupException(String message) {
+    super(String.format("%s\n%s", FTP_EXCEPTION, message));
+  }
+
+  public AriaGroupException(String message, Exception e) {
+    super(message, e);
+  }
+}