问题
The CGI to read the data from merch.txt works but how can I put this in a table?
HTML File:
<form action="/cgi-bin/asst5/data.cgi" method="post">
<table border="2" cellspacing="5" cellpadding="5">
<tr>
<td align="center">SKU: </td>
<td><input type="text" name="code" size="15"></td>
</tr>
<tr>
<td align="center">Name: </td>
<td><input type="text" name="customer" size="15"></td>
</tr>
</table>
</form>
Data.CGI where data is accepted after it's been entered in the HTML
my $sku = param('code');
my $cust = param('customer');
print <<HERE;
<HTML>
<BODY>
SKU: $sku<br>
Name: $cust<br>
HERE
open (ORDERS, ">>merch.txt") or die "File error, $!";
print ORDERS "$sku|$cust\n";
close ORDERS;
Read.CGI This is the CGI file that reads the content from merch.txt
open ( ORDERS, "merch.txt" ) or die "Error opening file, $!";
my @orders = <ORDERS>;
close ORDERS;
print <<here;
<HTML>
<BODY>
here
for (my $i = 0; $i < @orders; $i++ ) {
print "<td><pre>", CGI::escapeHTML($orders[$i])."<br>\n", "</pre></td>\n";
}
print <<MORE;
</BODY>
</HTML>
MORE
回答1:
Using your raw embedded HTML approach, it's not hard. But it is incredibly ugly.
print <<END_OF_HTML;
<html>
<body>
<table>
<tr><th>Sku</th><th>Cust</th></tr>
END_OF_HTML
for (@orders) {
my ($sku, $cust) = split /\|/;
print '<tr><td>', CGI::escapeHTML($sku), '</td>',
'<td>', CGI::escapeHTML($cust), '</td></tr>';
}
print <<END_OF_HTML;
</table>
</body>
</html>
END_OF_HTML
But mixing raw HTML with your Perl code is a terrible idea. Please use a templating engine instead. I recommend the Template Toolkit.
Here's a simple CGI program using TT to do what you need.
#!/usr/bin/perl
use strict;
use warnings;
use Template;
use CGI qw[header];
my $tt = Template->new;
# Best practice: three-arg open() and lexical filehandles
open my $ord_fh, '<', 'merch.txt' or die $!;
my @orders = <$ord_fh>;
close $ord_fh;
my @order_data = map {
my ($sku, $cust) = split /\|/;
{ sku => $sku, cust => $cust }
} @orders;
print header;
$tt->process('orders.tt', { orders => \@order_data })
or dir $tt->error;
And you'll need a template that looks something like this:
<html>
<head>
<title>Orders</title>
</head>
<body>
<h1>Orders</h1>
<table>
<tr><th>Sku</th><th>Cust</th></tr>
[% FOREACH order IN orders -%]
<tr><td>[% order.sku | html %]</td><td>[% order.cust | html %]</td></tr>
[% END -%]
</table>
</body>
</html>
来源:https://stackoverflow.com/questions/40347629/how-do-i-read-a-text-file-by-putting-its-data-in-a-table-using-cgi-in-perl