Question

我一直在测试XML::Simple有一些xml文件输出，并注意到我的一个xml文件中的位置，如果我有超过（1）文件路径，我的脚本将工作（ 2.xml ）

如果我只有（1）文件路径（ 1.xml ），那么我会收到以下消息：Not an ARRAY reference at ./tst-simple.pl line 28

我的问题是为什么代码不能用于（1）文件路径？我正在使用ForceArray =＆gt; 1。我该如何处理？

1.XML：

<?xml version="1.0" encoding="UTF-8"?>
<listing time="2011-10-04T02:33:44+0000" recursive="no" path="/storage/foobar/test/queues/20110731" exclude="" filter=".*" version="0.20.202.1.1101050227">
    <directory path="/storage/foobar/test/queues/20110731" modified="2011-10-04T02:32:11+0000" accesstime="1970-01-01T00:00:00+0000" permission="drwx------" owner="unix_act" group="foobar"/>
    <file path="/storage/foobar/test/queues/20110731/myfilename-00" modified="2011-10-03T04:47:46+0000" accesstime="2011-10-03T04:47:46+0000" size="123456789" app="3" blocksize="134217728" permission="-rw-------" owner="unix_act" group="foobar"/>
</listing>

2.XML：

<?xml version="1.0" encoding="UTF-8"?>
<listing time="2011-10-04T02:33:44+0000" recursive="no" path="/storage/foobar/test/queues/20110731" exclude="" filter=".*" version="0.20.202.1.1101050227">
    <directory path="/storage/foobar/test/queues/20110731" modified="2011-10-04T02:32:11+0000" accesstime="1970-01-01T00:00:00+0000" permission="drwx------" owner="unix_act" group="foobar"/>
    <file path="/storage/foobar/test/queues/20110731/myfilename-00" modified="2011-10-03T04:47:46+0000" accesstime="2011-10-03T04:47:46+0000" size="123456789" app="3" blocksize="134217728" permission="-rw-------" owner="unix_act" group="foobar"/>
    <file path="/storage/foobar/test/queues/20110731/myfilename-01" modified="2011-10-03T04:47:46+0000" accesstime="2011-10-03T04:47:46+0000" size="123456789" app="3" blocksize="134217728" permission="-rw-------" owner="unix_act" group="foobar"/>
</listing>

代码：

use strict;
use warnings;
use XML::Simple;
use Data::Dumper;

my $xml = $ARGV [0]; 
my $data = XMLin($xml); 

for my $xs ($xml) {
    #my $data = XMLin($xs, ForceArray => 0);
    my $data = XMLin($xs, ForceArray => 1);
    #my $data = XMLin($xs, ForceArray => [ qw ( path ) ]);
    print Dumper ($data);
}

foreach my $file( @{ $data->{file} } )
{
    my( $dir, $fname );
    if( $file->{path} =~ /^(.*)\/([^\/]+)$/ )
    {
        $dir = $1;
        $fname = $2;
    }
    else 
    {
        $dir = "";
        $fname = $file->{path};
    }
    print "This is the DIRECTORY: $dir\n"; 
    print "This is the FILE:      $fname\n";
    print "This is the FILE SIZE: $file->{size}\n";
}

Answer 1

您有两个名为$data的不同变量。一个是使用ForceArray => 1创建的，但您使用的是未使用ForceArray => 1创建的那个。

替换

my $data = XMLin($xml); 

for my $xs ($xml) {
    #my $data = XMLin($xs, ForceArray => 0);
    my $data = XMLin($xs, ForceArray => 1);
    #my $data = XMLin($xs, ForceArray => [ qw ( path ) ]);
    print Dumper ($data);
}

与

my $data = XMLin($xml, ForceArray => 1);
print(Dumper($data));

不是使用perl XML :: Simple代码的数组引用

1 个答案: