您好，关于实例化处理这一部分，您可以参考这一篇博客。链接如下：https://blog.csdn.net/supermapsupport/article/details/93968735?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522165050648816780271512443%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fblog.%2522%257D&request_id=165050648816780271512443&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~first_rank_ecpm_v1~rank_v31_ecpm-1-93968735.nonecase&utm_term=%E5%AE%9E%E4%BE%8B%E5%8C%96&spm=1018.2226.3001.4450
希望能帮助到您！
