定時清理磁盤

web/src/main/java/com/zhehekeji/web/service/CronTab.java

@@ -36,7 +36,9 @@ public class CronTab {
     }
 
     public static void checkFileTime(File dir,int days) {
-
+        if(!dir.exists()){
+            return;
+        }
         if (dir.isDirectory()) {
             String[] children = dir.list();
             if(children.length == 0){