XML :: Hash :: LX - 将哈希转换为xml：不是预期的输出

Question

我正在尝试使用此模块XML::Hash::LX将哈希转换为XML字符串，但我只获得第一个哈希键。有人能告诉我，如何获得整个哈希？

#!/usr/bin/env perl
use warnings;
use 5.012;
use XML::Hash::LX;

my $hash = { one => 1, two => 2, three => 3, four => 4 };

my $str = hash2xml( $hash );
print $str;

# Output:
# <?xml version="1.0" encoding="utf-8"?>
# <three>3</three>

Answer 1

你缺少一个根元素。

hash2xml { numbers => { one => 1, two => 2, three => 3, four => 4 } } 

---

<?xml version="1.0" encoding="utf-8"?>
<numbers><three>3</three><one>1</one><two>2</two><four>4</four></numbers>