cmd中输入java -version错误信息：
An error has occurred while processing the shared archive file.
Unable to unmap shared space.
Error occurred during initialization of VM
Unable to use shared archive.
解决办法：
Java\jre1.8.0_91\lib目录下，缺少rt.jar文件。
解决办法：拷贝rt.jar即可。
原文：https://www.cnblogs.com/yunfang/p/12034097.html