XML-Writer是一种用于生成xml文档的perl语言扩展，具体用法如下：

use XML::Writer;

use IO::File;

my $output = new IO::File(">output.xml");

my $writer = new XML::Writer(OUTPUT => $output);

$writer->startTag("greeting",

"class" => "simple");

$writer->characters("Hello, world!");

$writer->endTag("greeting");

$writer->end();

$output->close();