Cacher is the code snippet organizer for pro developers

import org.apache.commons.codec.digest.DigestUtils;

//支持大文件md5, 4.7g耗时23秒
//改文件名称不影响md5值，改文件内容才影响md5值
File file = new File("E:\\客户问题\\桂林福达集团有限公司\\20170818\\ecology.log");
FileInputStream fileInputStream = new FileInputStream(file);
String md5Hex = DigestUtils.md5Hex(fileInputStream);