上传新文件时，如何同时获取文件MD5和SHA1校验和?
我正在使用存储系统.用户将文件上传到服务器.
I am working on a storage system. Users upload files to the server.
在服务器端，我想实现一个程序，以便同时使用MD5和SHA1获取文件的校验和.
On the server side, I want to implement a program to get the checksums of the file using both MD5 and SHA1.
我知道如何使用DigestInputStream函数计算校验和，但是似乎一次仅支持一种方法(MD5或SHA1). 在JAVA中处理上传流时，如何同时计算MD5和SHA1?
I know how to calculate checksums using DigestInputStream functions, but it seems only supports one method (either MD5 or SHA1) a time. How can I calculate both MD5 and SHA1 a the same time when dealing with the upload stream in JAVA?
谢谢大家
使用两个MessageDigest实例(一个用于MD5，一个用于SHA1)，并将读取的字节输入两个实例.
Use two MessageDigest instances (one for MD5 and one for SHA1) and feed the bytes you read into both.