This action will force synchronization from 程序员小王/历经一个月总结使用java实现pdf文件的电子签字+盖章+防伪二维码+水印+PDF文件加密的全套解决方案, which will overwrite any changes that you have made since you forked the repository, and can not be recovered!!!

Synchronous operation will process in the background and will refresh the page when finishing processing. Please be patient.