在perl cgi中手动添加参数

时间:2014-09-05 17:47:00

标签: perl cgi

我已经编写了一个cgi脚本,它执行以下操作:

#!/usr/bin/perl
use strict;
use warnings;
use CGI qw(:cgi-lib :standard);
use CGI::Carp qw(warningsToBrowser fatalsToBrowser);

my $q = new CGI;
print $q->header;
print "<center>";
print $q->h1('Let\'s do something!');
print "</center>";
print $q->start_html(-title => 'Do something');
print $q->end_form;

our %in;
&ReadParse(%in);
my @keys = keys %in;
my @values = values %in;
main();

sub main{
    print "<center>";
    my $q0 = new CGI;
    print $q0->start_form(
        -name    => 'sniff_button',
        -method  => 'POST',
        -enctype => &CGI::URL_ENCODED,
    );
    print $q0->submit(
        -name     => 'button',
        -value    => 'Do something',
    );
    print $q0->end_form;
    print "</center>";
}

我想要做的是手动添加一些参数,因为下一个参数取决于之前的状态,而不仅仅取决于当前状态(所以我必须传递一个参数两次。)。
我用param()和URI完成了一些工作,但没有一个工作。有什么建议吗?

1 个答案:

答案 0 :(得分:1)

隐藏字段就是答案:

sub main{
    print "<center>";
    my $q0 = new CGI;
    print $q0->start_form(
        -name       => 'sniff_button',
        -method     => 'POST',
        -enctype    => &CGI::URL_ENCODED,
    );
    print $q0->hidden(
        -name       => 'machine_state',
        -default    => 'some_previous_value');
    print $q0->submit(
        -name   => 'button',
        -value  => 'Do something',
    );
    print $q0->end_form;
    print "</center>";
}