问题描述
我有应该从命令行接受两个参数的脚本。为此，我使用了@Entity(primaryKeys = ["firstName","lastName"]) // <-- Composite primary key
data class UserAccessToCompany(
val user_idUser: Int,val company_idcompany: Int
)
@Entity(foreignKeys = [ForeignKey(
entity = UserAccessToCompany::class,parentColumns = arrayOf("user_idUser","company_idcompany"),childColumns = arrayOf("user_access_to_company_idUser","user_access_to_company_idcompany"))
]) // <-- Composite primary key
data class Notification(
@PrimaryKey val idNotification: Int,// ...............
val user_access_to_company_idUser: Int,val user_access_to_company_idcompany: Int
)
Perl模块。
这是脚本：
Getopt::Long该脚本在肯定的情况下也可以正常工作，即，如果我向脚本传递2个参数，它将在屏幕上打印这些参数。
但是，如果我仅将一个参数传递给脚本，则应使用#!/usr/bin/perl
use strict;
use warnings;
use Getopt::Long 'HelpMessage';
GetOptions(
'node|n=s' => \my $node,'cmd|c=s' => \my $command,'help' => sub { HelpMessage(0) }
) or HelpMessage(1);
print "Node:$node\nCmd:$command\n";
doSomeOpearation($node,$command);
print "END\n";
sub doSomeOpearation {
my ($n,$c) = @_;
#...
return;
}
HelpMessage(1) unless ($node && $command);
=head1 NAME
run_command - Run Commands on SVC Server
=head1 SYNOPSIS
--node,-n Node name (required)
--command,-c Command (required)
--help,-h Print this help
=head1 VERSION
1.00
=cut
函数。脚本不是向我发出HelpMessage警告，而是向我显示Use of uninitialized value $command in concatenation (.) or string at script2.pl line 14.消息。
除非有2个参数，如何打印END并退出脚本？
解决方法
您的支票来不及了。
doSomeOpearation($node,$command);
...
HelpMessage(1) unless ($node && $command);
应该是
HelpMessage(1) unless ($node && $command);
doSomeOpearation($node,$command);
...
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