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大文件拷贝，试试NIO的内存映射

 4 years ago
source link: https://juejin.im/post/5e2523686fb9a030051f013e
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最近项目里有个需求需要实现文件拷贝，在java中文件拷贝流的读写，很容易就想到IO中的InputStream和OutputStream之类的，但是上网查了一下文件拷贝也是有很多种方法的，除了IO，还有NIO、Apache提供的工具类、JDK自带的文件拷贝方法

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