下面的代码是一个 cgi 文件，我在显示来自外部 css 文件的图像和样式时遇到问题。代码在第 18-28 行，我不确定我做错了什么。如果有任何帮助，我将不胜感激。
#!/usr/bin/perl -w
use strict;
use DBI;
use CGI;
use CGI::Carp('fatalsToBrowser');
my $query = new CGI;
print $query->header();
my $my_database = "TrypSnoDB";
my $localhost = "localhost";
my $dsn = "DBI:mysql:$my_database:$localhost";
my $db_user_name = "adrian";
my $db_password = "temp_pass";
my $dbh = DBI->connect("DBI:mysql:database=TrypSnoDB;host=localhost;mysql_socket=/private/software/mysql/mysql.sock","adrian","temp_pass", {'RaiseError' => 1});
print "<html>\n";
print "<head>\n";
print "<title>Welcome to the T. Brucei snoRNA Database</title>\n";
print "<link type='text/css' rel='stylesheet' href='/public_html/style.css'>\n";
print "</head>\n";
print "<body>\n";
print "<h1>Trypanosomatid snoRNA Database</h1>\n";
print "<img class='my_images' src='/public_html/tb_pic1.png'>\n";
print "</body>\n";
print "</html>\n";
if ($query->param('submit1')){
my $orig_sno = $query->param('snorna1');
my $family = $query->param('family1');
my $query_type = $query->param('target_option1');
my $target = $query->param('target_name1');
if ($orig_sno eq "Trypanosoma brucei") {
$orig_sno = 1;
}
elsif ($orig_sno eq "Leishmania major") {
$orig_sno = 7;
}
elsif ($orig_sno eq "ALL") {
$orig_sno = "1 or ST.org_id=7";
}
if ($family eq "ALL") {
$family = "'C/D' or ST.family='H/ACA'";
}
else {
$family = "'$family'";
}
if ($target ne "ALL") {
$family = "$family and T.target_name='$target'";
}
my($db_query,$common_tar,$exp_ver_sno,$exp_ver_tar,$total);
$db_query = "SELECT ST.sno_name,T.target_name,T.location,T.base_pair,SM.annotated_seq FROM sno_Table ST,sno_Modifications SM,Targets T WHERE ST.sno_id=SM.sno_id and SM.mod_id=T.target_id and (ST.org_id=$orig_sno) and (ST.family=$family)";
$common_tar="and T.target_id in(SELECT T.target_id FROM sno_Table ST,sno_Modifications SM,Targets T WHERE ST.sno_id=SM.sno_id and SM.mod_id=T.target_id group by T.target_id having count(*)=2) order by T.location desc";
$exp_ver_sno="and ST.exper_ver='Y'";
$exp_ver_tar = "and T.exp_ver='Y'";
if ($query_type eq "snoRNAs with common targets") {
$db_query=$db_query.$common_tar;
}
elsif ($query_type eq "Experimentally verified snoRNAs") {
$db_query=$db_query.$exp_ver_sno;
}
elsif ($query_type eq "snoRNAs with experimentally verified targets") {
$db_query=$db_query.$exp_ver_tar;
}
elsif ($query_type eq "ALL"){
$db_query=$db_query;
}
my $sth = $dbh->prepare($db_query);
$sth->execute();
my$total = $sth->rows;
print "<table border=1>\n
<tr>
<th>snoRNA</th>\n
<th>Target Name</th>\n
<th>Target Location</th>\n
<th>Target Base Pair</th>\n
<th>Annotated Sequence</th>\n
</tr>\n";
while (my@row = $sth->fetchrow_array()){
my$sno_name = $row[0];
my$tar_name = $row[1];
my$tar_loc = $row[2];
my$tar_bp = $row[3];
my$annotated_seq = $row[4];
print "<tr>\n<td>$sno_name</td><td>$tar_name</td><td>$tar_loc</td><td>$tar_bp</td><td>$annotated_seq</td></tr>\n";
}
print "<tr>
<th>TOTAL</th>\n
<th>$total</th>\n
</tr>\n";
print "</table>";
}
最佳答案
您的问题几乎可以肯定是 CSS 文件的 URL 错误。您可以通过查看 Web 服务器错误日志并查看是否有 CSS 请求的 404 记录来确认这一点。
很遗憾，我无法告诉您正确的 URL 是什么，因为我不知道您的网络服务器是如何配置的。
您可能还想解决其他几个问题:
- 您生成的 HTML 无效。您在和标签之外打印标签。在您的 Perl 程序中打印原始 HTML 是一个糟糕的主意 - 很容易犯您在此处遇到的各种错误。最好建议您使用模板引擎(我推荐 Template Toolkit )。
- 您的数据库查询容易出现 SQL injection attacks .请在有人破坏您的服务器之前切换到使用绑定(bind)变量。
关于css - 无法将 css 合并到 perl cgi，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22171899/