判空工具类手写

CheckUtils.notNull(articleDTO.getId(), "文章上下架状态更新失败：没有有效的文章ID");

CheckUtils

public static void notNull(Object obj, String template, Object... params) {
   
        AssertUtils.notNull(obj, ILLEGAL_PARAM, template, params);
    }

AssertUtils

public static void notNull(Object obj, String errorCode, String template, Object... params) {
   
        notNull(obj, new BaseException(errorCode, buildMsg(template, params)));
    }

public static void notNull(Object obj, RuntimeException rt) {
   
        if (obj == null) {
   
            throwRt(rt, "the object should be not null");
        }
    }

private static void throwRt(RuntimeException rt, String msg) {
    throw rt == null ? new IllegalStateException(msg) : rt;
}