自从我问这个问题以来已经过去了快一个月了，但没有出现答案。因此，我现在发布我的基于 ThisSuitIsBlackNot 评论的文章。
虽然没有那么详细，但它可以作为一个关于如何连接 Perl、HTML、Javascript/Ajax 和 JSON 的最小示例。也许它可以帮助某人开始该主题。
如果您想运行此代码，只需将index.html 文件复制到您的html 目录（例如/var/www/html）并将perl 脚本复制到您的cgi-bin 目录（例如/var/www/cgi-bin）。确保使这些 perl 脚本可执行！在我下面的代码中，cgi 目录位于 /var/www/cgi-bin/ajax/stackCGI - 请相应地更改它。
管道的状态被写入一个文件，然后以 1 秒的间隔读取该文件，更新进度条并显示有关当前状态的消息。管道中单个步骤所花费的持续时间由 Perl 的 sleep 函数表示。
这些文件如下。
欢迎任何意见和改进！
索引.html：
<!DOCTYPE html>
<html>
<head>
<title>Test</title>
<meta charset='utf-8' />
<link rel="stylesheet" href="http://code.jquery.com/ui/1.11.3/themes/smoothness/jquery-ui.css">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="http://code.jquery.com/ui/1.11.3/jquery-ui.js"></script>
<style>
.ui-progressbar {
position: relative;
}
.progress-label {
position: absolute;
left: 50%;
font-weight: bold;
text-shadow: 1px 1px 0 #fff;
}
</style>
<script>
var progressVal = 0;
function get_progress() //get_progress();
{
$.ajax({
type: 'POST',
url: '/cgi-bin/ajax/stackCGI/readFromFileJson.pl',
success: function( res ) {
$('#progressPerc').append(' ' + res.progressSummary.progress);
$('#progressMessage').html('status of pipeline: ' + res.progressSummary.progressMessage);
$('.progress-label').html(res.progressSummary.progress + '%');
progressVal = parseFloat(res.progressSummary.progress);
$( "#progressbar" ).progressbar({
value: progressVal
});
}
});
if (progressVal < 100){ //pipeline has not finished yet
setTimeout(get_progress, 1000); //call the function each second every second to get a status update
}
else { //pipeline has finished
$('.progress-label').html('100%');
alert("pipeline has finished! your results can be found in path/to/files. an e-mail has been sent to [email protected] /cdn-cgi/l/email-protection");
}
}
function start_pipeline()
{
$.ajax({
type: 'POST',
url: '/cgi-bin/ajax/stackCGI/pipeline.pl',
data: { 'fileAnalysis': $('#myFile').val() },
success: function(res) {
//add your success function here
},
error: function() {alert("pipeline has not started!");}
});
}
</script>
</head>
<body>
file name: <input type='text' id='myFile'/>
<button onclick='start_pipeline();get_progress();' >Analyze now</button>
<div id="progressbar"><div class="progress-label"></div></div>
<div id="progressMessage"></div>
<div id="progressPerc">status of pipeline in percent (in this example the function get_progress is called every second): </div>
</body>
管道.pl：
#!/usr/bin/perl
use strict;
use warnings;
use CGI;
my $q = new CGI;
print $q->header('text/plain'); #needed! otherwise the ajax call in start_pipeline returns the error message
my $fileForAnalysis = $q -> param('fileAnalysis');
#create a file where the progress is reported to
#make sure you have the appropriate permissions to do this
my $filename = '/var/www/cgi-bin/ajax/stackCGI/progressReport.txt'; #change the directory!
my $fh; #file handler
my $number; #progress of pipeline in percent
my $message; #progress of pipeline
$number = 0;
$message = 'pipeline has startet successfully! Your file '.$fileForAnalysis.' is now processed.';
open($fh, '>', $filename) or die "Could not open file '$filename' $!";
print $fh $number."\t".$message;
close $fh;
sleep(3); #first program is running
$number = 10; #progress of pipeline in percent. as we have 4 programs in this pipeline it could also be 25 or whatever
$message = 'first program has finished';
open($fh, '>', $filename) or die "Could not open file '$filename' $!";
print $fh $number."\t".$message;
close $fh;
sleep(5); #second program is running
$number = 20;
$message = 'second program has finished';
open($fh, '>', $filename) or die "Could not open file '$filename' $!";
print $fh $number."\t".$message;
close $fh;
sleep(5); #third program is running
$number = 42;
$message = 'third program has finished';
open($fh, '>', $filename) or die "Could not open file '$filename' $!";
print $fh $number."\t".$message;
close $fh;
sleep(5); #fourth program is running
$number = 100;
$message = 'pipeline has finished';
open($fh, '>', $filename) or die "Could not open file '$filename' $!";
print $fh $number."\t".$message;
close $fh;
readFromFileJson.pl：
#!/usr/bin/perl
use strict;
use warnings;
use JSON;
use CGI;
my $q = new CGI;
#create a file where the progress is reported to
#make sure you have the appropriate permissions to do this
my $filename = '/var/www/cgi-bin/ajax/stackCGI/progressReport.txt'; #change the directory!
open(my $fh, '<:encoding(UTF-8)', $filename) or die "Could not open file '$filename' $!";
print $q->header('application/json;charset=UTF-8'); #output will be returned in JSON format
my @progressReport = split(/\t/,<$fh>); #file is tab separated
my %progressHash;
$progressHash{"progress"} = $progressReport[0];
$progressHash{"progressMessage"} = $progressReport[1];
#convert hash to JSON format
my $op = JSON -> new -> utf8 -> pretty(1);
my $output = $op -> encode({
progressSummary => \%progressHash
});
print $output;
