fix: 修复空指针和类型转换问题

kunlong-luo

2023-02-02 8f2ce95165f90e51d41b083610d00ae346f3a852

 src/main/java/com/genersoft/iot/vmp/service/IUserService.java

@@ -25,5 +25,5 @@

    PageInfo<User> getUsers(int page, int count);

    int resetPushKey(int id);
    int changePushKey(int id, String pushKey);
}