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本篇内容主要讲解“Perl 怎么连接数据库 mysql”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让丸趣 TV 小编来带大家学习“Perl 怎么连接数据库 mysql”吧!
一、命令行参数
1.1 代码
#!/usr/bin/env perl
use Getopt::Long;
use Data::Dumper;
use Pod::Usage;
my $Debug = 1;
sub dprint (@)
return unless $Debug;
chomp(my @m = @_);
print STDERR DEBUG: , join( , @m), \n
MAIN:
my $db_user;
my $db_pass;
GetOptions(
\my %opt,
debug|d+ = \$Debug,
help|h|? = sub{ pod2usage(-verbose= 1) },
db_user|u=s = \$db_user,
db_pass|x=s = \$db_pass,
) or pod2usage();
pod2usage(-message= must requires db_user, db_pass!)
unless $db_user $db_pass;
dprint db_user : $db_user
dprint db_pass : $db_pass
}1.2 使用
命令：“–”或“-”
./test.pl –db_user testuser –db_pass testpass
./test.pl –u testuser –x testpass
二、连接数据库 mysql
2.1 代码
#!/usr/bin/env perl
use DBI;
MAIN:
my $dbh = DBI- connect( DBI:mysql:clouxns:202.85.222.121:3306 , root , zxc1758! %*
$query_sql = SELECT zone_id, zone_name FROM xns_zone
$query_sth = $dbh- prepare($query_sql);
$query_sth- execute() or die can t run query sql:$dbh- errstr
while(my @data = $query_sth- fetchrow_array())
{ my $zone_id = $data[0];
my $zone_name = $data[1];
print $zone_id\t$zone_name\n
}
$dbh- disconnect();}三、DNS 查询
dns 查询 A 记录、NS、SOA。
#!/usr/bin/env perl
use Net::DNS::Resolver;
use Net::DNS::Packet;
MAIN:
my $resolver = Net::DNS::Resolver-
#Find a host s address
my $query = $resolver- search( www.guowenyan.cn
if($query)
{ foreach my $rr ( grep { $_- type eq A } $query- answer )
{
print $rr- address, \n
}
}
else
{
warn query failed: ,$resolver- errorstring, \n
}
#Find the nameservers for a domain.
my $query = $resolver- search( baidu.com , NS
if($query)
{ foreach my $rr ( grep { $_- type eq NS } $query- answer )
{
print $rr- nsdname, \n
}
}
else
{
warn query failed: ,$resolver- errorstring, \n
}
#Find a domain s SOA record in zone file format.
my $query = $resolver- search( baidu.com , SOA
if($query)
{ ($query- answer)[0]- print;
}
else
{
warn query failed: ,$resolver- errorstring, \n
}
}四、发送邮件
4.1 代码
#!/usr/bin/env perl
use Net::SMTP;
sub send_mail()
my @mail_to = ( 480160531@qq.com , 2135361204@qq.com
my $mail_from = kan_haha001@163.com
my $mail_pass = 123zxc
my $mail_message = aanbb
my $smtp = Net::SMTP- new( smtp.163.com
$smtp- auth($mail_from, $mail_pass) || die Auth Error! $!
foreach my $mail_to (@mail_to)
{ $smtp- mail($mail_from);
$smtp- to($mail_to);
#Start the mail
$smtp- data();
#Send the header
$smtp- datasend( From: $mail_from\n
$smtp- datasend( To: $mail_to\n
$smtp- datasend( Subject: the mail is sended by perl.\n
$smtp- datasend( \n
#send the message
$smtp- datasend( $mail_message\n
#send the termination string
$smtp- dataend();
}
$smtp- quit();}4.2 注意事项
1. 需要安装 Authen::SASL：perl -MCPAN -e shell cpan install Authen::SASL。
2. 发件人、收件人必须是单引号 (kan_haha001.163.com)。
3. 邮件头中的发件人、收件人、主题、正文的前后都必须有 \n。（否则会系统退信）
到此，相信大家对“Perl 怎么连接数据库 mysql”有了更深的了解，不妨来实际操作一番吧！这里是丸趣 TV 网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！
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