随机生成数据，通过磁盘文件映射的方式。代码中所用的函数可以去MSDN里面查询-Randomly generated data, by mapping the disk files. Code used in the query function can go inside MSDN

FIXME: remove all knowledge of the buffer layer the core VM. -FIXME: remove all knowledge of the buffer layer the core VM.

// 上传文件处理器 MultipartHttpServletRequest mRequest = (MultipartHttpServletRequest) request // 文件列表 Map<String, MultipartFile> fileMap = mRequest.getFileMap() // 拼接路径 String uploadDir = dataFiles

当读取的文件比较大的时候，由于计算机缓存不够大，导致无法进行下一步操作，需要通过内存映射的方式read文件，并做后续处理。(When the read file is relatively large, due to the computer cache is not big enough, leading to the next step, you need to read the file through the memory-ma