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/common/VersionPo.java

@@ -1,6 +1,6 @@
package com.genersoft.iot.vmp.common;

import com.alibaba.fastjson.annotation.JSONField;
import com.alibaba.fastjson2.annotation.JSONField;

public class VersionPo {
    /**