perl - 为什么我在Perl中收到 “Odd number of elements in anonymous hash”警告？

Question

帮助，我正在尝试在Wordpress博客中使用自定义字段在XMLRPC上使用metaperloglogAPI使用以下perl脚本创建新帖子，但自定义字段似乎存在问题。似乎只有第二个自定义字段(宽度)被发布。无法获得“高度”以正确发布。当我添加另一个字段时，出现“匿名哈希中元素的奇数个”错误。这一定很简单-有人会理智地检查我的语法吗？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

尽管语法上技术上有效，但它并没有按照您的想法进行。

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

大致相当于:

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

这当然不是您想要的。 (0x881a168部分会有所不同；它实际上是哈希引用存储的地址。)

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。但这可能是不对的。这取决于 send_request的期望。