"hosts" 在普拉克安装：：建造者

Question

Plack::Builder的概要和这个答案说:

# in .psgi
use Plack::Builder;
my $app = sub { ... };
builder {
    mount "/foo" => builder {
        enable "Foo";
        $app;
    };
    mount "/bar" => $app2;
    mount "http://example.com/" => builder { $app3 };
};

我试了如下:

use Plack::Builder;
my $app1 = sub { return [200, ['Content-Type' => 'text/plain'], [ "Hello 1"] ]; };
my $app2 = sub { return [200, ['Content-Type' => 'text/plain'], [ "Hello 2"] ]; };
my $app3 = sub { return [200, ['Content-Type' => 'text/plain'], [ "Hello 3"] ]; };
builder {
        mount "/a1" => builder { $app1 };
        mount "http://myhost.com" => builder{ $app2 };
        mount "/" => builder{ $app3 };
}

但是当试图用plackup运行它时得到:

加载/tmp/app时出错。psgi:路径需要以/at开头/home/cw/.anyenv/envs/plenv/versions/5.20.3/lib/perl5/site_perl/5.20.3/Plack/Builder.pm第108行。

怎么了?

Answer 1

我没有看到文档中明确提到这一点，但是除了主机名之外，您必须包含路径组件，例如http://myhost.com/foo。把

mount "http://myhost.com" => builder{ $app2 };

mount "http://myhost.com/" => builder{ $app2 };

(即。/ on host myhost.com)

相关代码在Plack::App::URLMap (mount只是调用Plack::App::URLMap的map方法):

if ($location =~ m!^https?://(.*?)(/.*)!) {
    $host     = $1;
    $location = $2;
}