fix

src/main/java/com/mobvista/apptag/utils/StorageTag.java

@@ -181,7 +181,9 @@ public class StorageTag {
             String insert_sql = "REPLACE INTO storage(package_name, app_name, platform, tag, update_time) " +
                     "VALUES";
             //  System.out.println(insert_sql + insertSql.substring(0, insertSql.length() - 1));
-            stmt.executeQuery(insert_sql + insertSql.substring(0, insertSql.length() - 1));
+            if (insertSql.length() > 0) {
+                stmt.executeQuery(insert_sql + insertSql.substring(0, insertSql.length() - 1));
+            }
             con.close();
         } catch (Exception e) {
             e.printStackTrace();