分页参数基础类，增加排序方式字段

4dkankan-common-utils/src/main/java/com/fdkankan/common/request/RequestBase.java

@@ -19,5 +19,5 @@ public class RequestBase implements Serializable {
      * DESC-降序
      * ASC-升序
      */
-    private String sortBy = "ASC";
+    private String sortBy = "DESC";
 }