我正在尝试完成我的任务的最后一项任务是在将表单提交到另一个 CGI 程序之前对其进行验证。
发生的事情是我有一个简单的 CGI 程序会要求用户输入数据
#!/usr/bin/perl -w
use CGI qw/:standard/;
# Standard HTTP header
print header();
# Write information to data file and produce a form
&printForm();
# Finish HTML page
print end_html();
# This sub will create a form to access the print_fortune.cgi script
sub printForm
{
print qq~
<html>
<head><title>My Search Engine</title>
</head>
<body>
<form action="b1.cgi" method="GET">
What is your e-msil address? <input type="text" name="passing" size=40>
<input type="submit" value="send address">
<input type="hidden" name="form" value="insert" />
</form>
<form method="get" action="b1.cgi" enctype="application/x-www-form-urlencoded">
<input type="text" name="search" value="" size="30" /><br />
<label><input type="radio" name="option" value="name" checked="checked" />name</label>
<label><input type="radio" name="option" value="author" />author</label><label>
<input type="radio" name="option" value="url" />url</label>
<label><input type="radio" name="option" value="keyword" />keyword</label>
<input type="submit" name=".submit" value="Search" />
<input type="hidden" name="passing" value="http://default.com" />
<div><input type="hidden" name="form" value="search" /></div></form>
</body>
所以上面的程序包含两种形式。一种是向数据库中添加新数据，另一种是从数据库中搜索。
#!/usr/bin/perl
print "Content-type: text/html\n\n";
use LWP::Simple;
use CGI;
use HTML::HeadParser;
use DBI;
my $serverName = "";
my $serverPort = "";
my $serverUser = "";
my $serverPass = "";
my $serverDb = "";
my $serverTabl = "";
$cgi = CGI->new;
my $pass = $cgi->param('passing');
$URL = get ("$pass");
$head = HTML::HeadParser->new;
$head->parse("$URL");
my $methods = $cgi->param('form');
if ($methods eq "insert"){
insert_entry();
}
show_entries();
sub insert_entry {
my ($dbh, $success, $name, $author, $url,$temp);
$dbh = DBI->connect("DBI:mysql:database=$serverDb;host=$serverName;port=$serverPort",$serverUser,$serverPass);
$name = $head->header('X-Meta-Name');
$author = $head->header('X-Meta-Author');
$url = $cgi->param('passing');
$temp = $head->header('X-Meta-Keywords');
@keyword = split(/,/,$temp);
$success = $dbh->do("INSERT INTO $serverTabl(name,author,url,keyword1,keyword2,keyword3,keyword4,keyword5) VALUES(?,?,?,?,?,?,?,?)", undef,$name,$
author,$url,$keyword[0],$keyword[1],$keyword[2],$keyword[3],$keyword[4]);
$dbh->disconnect;
if($success != 1) {
return "Sorry, the database was unable to add your entry.
Please try again later.";
} else {
return;
}
}
sub show_entries {
my ($dbh, $sth, @row);
my $search = $cgi->param('search');
my $option = $cgi->param('option');
$dbh = DBI->connect("DBI:mysql:database=$serverDb;host=$serverName;port=$serverPort",$serverUser,$serverPass);
$sth = $dbh->prepare("SELECT *
FROM $serverTabl
WHERE $option LIKE '%$search%'");
$sth->execute;
print "Existing Entries",HR;
while(@row = $sth->fetchrow_array) {
$row[5] = scalar(localtime($row[5]));
print "<table border='2'><tr>";
print "<td>" . $row[0] . "</td>";
print "<td>Name" . $row[1] . "</td>";
print "<td>Author" . $row[2] . "</td>";
print "<td>URL" . $row[3] . "</td>";
print "<td>Keyword1" . $row[4] . "</td>";
print "<td>Keyword2" . $row[5] . "</td>";
print "<td>Keyword3" . $row[6] . "</td>";
print "<td>Keyword4" . $row[7] . "</td>";
print "<td>Keyword5" . $row[8] . "</td>";
print "</tr></table>";
}
$sth->finish;
$dbh->disconnect;
}
所以现在的问题是如何在表单提交进入第二个程序之前为它做一个正则表达式？
我想做验证
name 允许空格但只允许字母字符 author允许空格但只允许字母字符 keyword不允许空格并且只允许字母字符 url只允许字母数字字符和以下 :/.~?=+& 两个句点不能连续存在。
我真的很抱歉，但我对 Perl 真的很陌生。我们只学过 PHP，但 Perl 几乎一无所获……