在Plack::Builder中挂载“hosts”

Question

在Plack::Builder中挂载“hosts”

4

Plack::Builder的简介和这个答案都说：

# in .psgi
use Plack::Builder;

my $app = sub { ... };

builder {
    mount "/foo" => builder {
        enable "Foo";
        $app;
    };

    mount "/bar" => $app2;
    mount "http://example.com/" => builder { $app3 };
};

我尝试了以下操作：

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 };
}

但是当我尝试使用plackup运行它时，出现了以下错误:

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

出了什么问题？

- cajwine

1个回答

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- ThisSuitIsBlackNot · Accepted Answer

在文档中没有明确提到，但是除了主机名之外，您还必须包含路径组件，例如http://myhost.com/foo。请更改。

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

to

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

有关代码位于Plack :: App :: URLMap中（mount只是调用了Plack :: App :: URLMap的map方法），在主机myhost.com上的/。

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