该组件用于文件与普通表单混合上传文件时使用，支持多个文件及表单混合上传，原则上不限文件大小，但建议限制表单总数据大小小于2M才初始化该组件以达到最佳性能

-components for the paper mixed with ordinary form upload documents used to support a number of documents and upload mixed form, in principle, limited file size, but the proposal to limit the total data size form less than 2M only initialization of the components to achieve the best performance