为什么我在Perl中收到"匿名哈希中的奇数个元素"警告？

Question

帮助,我正在尝试使用metaweblogAPI over XMLRPC使用以下perl脚本在我的wordpress博客中使用自定义字段创建一个新帖子,但是自定义字段似乎存在问题.似乎只发布了第二个自定义字段(宽度).无法获得正确发布的"高度".当我添加另一个字段时,我得到"匿名哈希中奇数个元素"错误.这必须是简单的事情 - 有人会善意地检查我的语法吗？谢谢.

#!/usr/bin/perl -w
use strict;
use RPC::XML::Client;
use Data::Dumper;

my $cli=RPC::XML::Client->new('http://www.sitename.com/wp/xmlrpc.php');

my $appkey="perl"; # doesn't matter
my $blogid=1; # doesn't matter (except blogfarm)

my $username="Jim";
my $passwd='_____';

my $text=<<'END';

This is the post content...

You can also include html tags...

See you!
END

my $publish=0; # set to 1 to publish, 0 to put post in drafts

my $resp=$cli->send_request('metaWeblog.newPost',
$blogid,
$username,
$passwd,
{
  'title'       => "this is doodoo",
  'description' => $text,
  'custom_fields' => {
    { "key" => "height", "value" => 500 },
    { "key" => "width", "value" => 750 }
  },
},
$publish);

exit 0;

Answer 1

虽然技术上有效的语法,但它没有按照你的想法.

'custom_fields' => {
    { "key" => "height", "value" => 500 },
    { "key" => "width", "value" => 750 }
},

大致等同于:

'custom_fields' => {
    'HASH(0x881a168)' => { "key" => "width", "value" => 750 }
},

这肯定不是你想要的.(0x881a168部分会有所不同;它实际上是存储hashref的地址.)

我不确定自定义字段的正确语法是什么.你可以试试

'custom_fields' => [
    { "key" => "height", "value" => 500 },
    { "key" => "width", "value" => 750 }
],

这会将custom_fields设置为哈希数组.但这可能不对.这取决于send_request预期.