Vsftpd configuration cannot be logged on (it won't work after a long time, please consult)

Vsftpd configuration cannot be logged on (it won't work for a long time, please consult) -- Linux Enterprise Application-Linux server application information. The following is a detailed description. After setting the parameters, you cannot log on with hngd1 or hngd2 on the client. The following message is displayed:
Connected to 192.168.100.111.
220 (vsFTPd 2.0.5)
User (192.168.100.111 :( none): hngd1
331 Please specify the password.
Password:
530 Login incorrect.
Login failed.
The procedure is as follows:
A vi login.txt
Hngd1
111111
Hngd2
222222
B. Generate the authentication File For vsftpd.
Db_load-T-t hash-f./login.txt/etc/vsftpd/vsftpd_login.db
C. Create the PAM Configuration File required by the virtual user.

Create vsftpd. vu
Auth required/lib/security/pam_userdb.so/etc/vsftpd/vsftpd_login
Account required/lib/security/pam_userdb.so/etc/vsftpd/vsftpd_login
# Useradd-d/home/ftpsite virtual
# Chmod 700/home/ftpsite
F. Set the vsftpd. conf configuration file:
Anonymous_enable = YES
Local_enable = YES
Write_enable = YES
Local_umask = 022
Anon_upload_enable = YES
Dirmessage_enable = YES
Xferlog_enable = YES
Connect_from_port_20 = YES
Xferlog_std_format = YES
Listen = YES
Guest_enable = YES
Guest_username = virtual
Pam_service_name = vsftpd. vu
Userlist_enable = YES
Tcp_wrappers = YES