Perl, Dancer, LWP::UserAgent, OAuth2, weibo

1. 微博#cpan#机器人

3. Where is Perl?

4. 老版本不可用！

5. let's DIY!

6. 申请微博应用

7. 获取应用密钥

8. 设置授权回调页

9. Dancer -a weiboexp
• package WeiboExp;
• use Dancer ':syntax';
• use Dancer::Plugin::Deferred;
• use Net::OAuth2::Client;
• get '/user/login' => sub {
• redirect &client->authorize;
• };
• true;

10. • sub client {
• Net::OAuth2::Profile::WebServer->new(
• name => 'weibo',
• site => 'https://api.weibo.com',
• client_id => config->{app_key},
• client_secret => config->{app_secret},
• authorize_path => '/oauth2/authorize',
• access_token_path => '/oauth2/access_token',
• access_token_method => 'POST',
• token_scheme => 'uri-query:access_token',
• redirect_uri => uri_for('/user/profile'),
• );
• };

11. • get '/user/profile' => sub {
• my $session = &client->get_access_token(params->{code});
• deferred error => $session->error_description if $session->error;
• my $uid_res = $session->get('/2/account/get_uid.json');
• if ( $uid_res->is_success ) {
• my $uid = (decode_json $uid_res->decoded_content)->{'uid'};
• my $ushow_res = $session->get("/2/users/show.json?uid=${uid}");
• if ( $ushow_res->is_success ) {
• my $user = decode_json $ushow_res->decoded_content;
• session user => { name => $user->{'name'}, hdimg => $user-
>{'profile_image_url'} };
• deferred success => sprintf "Welcome back, %s", $user->{name};
• template 'profile', { user => $user };
• }
• } else {
• deferred error => $uid_res->status_line . 'get_uid';
• redirect '/';
• };
• };

12. weiboexp/views/profile.tx
• <img src="<: $user.avatar_large :>"/><br/>
• 微博地址：<a href="http://weibo.com/<: $user.domain :>">http://weibo.com/<:
$user.domain :></a><br/>
• 签名档：<: $user.description :><br/>
• 住址：<: $user.location :><br/>
• 个人网站：<a href="<: $user.url :>"><: $user.url :></a><br/>
• 最新微博：<: $user.status.text :>

13. Great, But where is the
bot?

14. 应用授权信息

15. SO Easy now!

16. • #!/usr/bin/env perl
• use JSON;
• use 5.010;
• use HTTP::Request;
• use LWP::UserAgent;
• use URI::Escape qw(uri_escape);
• # read from $session->access_token()
• my $token = '2.00kSQGIB1Q6J9C3d32741b********';
• my $session = LWP::UserAgent->new;
• my $api_base = 'https://api.weibo.com';
• while(1) {
• get_mention();
• sleep 30;
• };

17. • sub get_mention {
• my $mention_res = $session-
>get("${api_base}/2/statuses/mentions.json?access_token=${token}");
• if ( $mention_res->is_success ) {
• my $statuses = ( decode_json $mention_res->decoded_content )-
>{'statuses'};
• my $regexstr = q(#cpan#);
• for my $status ( @{ $statuses } ) {
• my $mid = $status->{'id'};
• my $msg = $status->{'text'};
• if ( $msg =~ s{$regexstr}{}i and $msg =~ s{@ARGVs+?}{}i ) {
• my $ret = uri_escape(mcpan_query($msg));
• my $create_res = $session-
>post("${api_base}/2/comments/create.json?access_token=${token}&id=${
mid}&comment=${ret}");
• if ( $create_res->is_success and ! ( decode_json $create_res-
>decoded_content )->{'error'} ) {
• say "Create Comments OK!";
• }
• }
• }
• }
• }

18. • sub mcpan_query {
• my $modulename = shift;
• my $ua = LWP::UserAgent->new;
• my $req = HTTP::Request->new( 'POST',
"http://api.metacpan.org/v0/module/_search" );
• $req->header( 'Content-Type' => 'application/json' );
• $req->content(encode_json({
• query => { query_string => { query => $modulename, } },
• filter => { term => { status => 'latest', } },
• fields => [ 'release', 'author' ]
• }));
• my $res = $ua->request( $req );
• return $res->status_line unless $res->is_success;
• my $hits = decode_json $res->decoded_content;
• my @url = keys { map { 'https://metacpan.org/release/' . $_-
>{fields}->{author} . '/' . $_->{fields}->{release} => 1 } @{ $hits-
>{hits}->{hits} } };
• my $short_url = shorten(@url);
• return join ' ', @$short_url;
• }

19. • sub shorten {
• my $url = shift;
• my $shorten_res = $session-
>get( "${api_base}/2/short_url/shorten.json?access_toke
n=${token}&url_long=" . join('&url_long=', @{$url}) );
• if ( $shorten_res->is_success ) {
• my $urls = ( decode_json $shorten_res-
>decoded_content )->{'urls'};
• my @short_url = map { $_->{url_short} } @{$urls};
• return @short_url;
• } else {
• say $shorten_res->status_line;
• }
• }

20. 结果

21. see More
• https://github.com/CPAN-API/metacpan-developer
• https://metacpan.org/pod/Net::OAuth2::Client
• https://metacpan.org/pod/Search::Elasticsearch
• http://www.elasticsearch.org/guide/
• http://open.weibo.com/wiki/授权机制说明
• http://open.weibo.com/wiki/微博API

22. 谢谢！