2M改为4M

src/app/views/sys-config/sys-config.component.ts

@@ -307,13 +307,13 @@ export class SysConfigComponent implements OnInit {
         observer.complete();
         return;
       }
-      const isLt2M = file.size / 1024 / 1024 < 2;
-      if (!isLt2M) {
-        this.msg.error('图片大小不能大于2MB!');
+      const isLt4M = file.size / 1024 / 1024 < 4;
+      if (!isLt4M) {
+        this.msg.error('图片大小不能大于4MB!');
         observer.complete();
         return;
       }
-      observer.next(isPic && isLt2M);
+      observer.next(isPic && isLt4M);
       observer.complete();
     });
   };