首先是获取Base64的encode字符串：
echo -n "username:password" | openssl base64
然后是使用axel
axel -H "Authorization: Basic base64HashValue" "yourURL"
当然，也可以使用二合一的方法：
axel -H "Authorization: Basic $(echo -n 'username:password' | openssl base64)" "yourURL"
&[......]
apt-get install lighttpd lighttpd-mod-webdav apache2-utils
#install lighttpd and additional module lighttpd-mod-webdav
#apache2-utils:htpasswd to generate webdav password file, lighttpd also reuse it
chown www-data:www-data /var/run/lighttpd/
#[......]
// 放在drawable目录即可
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_enabled="false">
<shape>
<solid android:color[......]
打开以下配置即可
anonymous_enable=NO
local_enable=YES
write_enable=YES
chroot_local_user=YES
allow_writeable_chroot=YES
user_sub_token=$USER
local_root=/home/$USER/ftp
[......]