(function () {
var crypto = require('crypto');
var fs = require('fs');
exports.FileMD5 = function (filename,callback) {
var apk_name=filename.replace(/.apk/ig,".dat");
var sum = crypto.createHash('md5');
sum.update(fs.readFileSync('../upfiles/Apk/'+apk_name));
var art = sum.digest('hex').trim().toLowerCase();
return art.toUpperCase(); //字母转大写
}
}).call(this);