Typecho 用 CustomRSS 插件抓文章，打开就 404？这波操作帮你搞定！

<div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space">今天折腾着给网站加个 RSS 功能，搜了一圈发现 Typecho 平台上常用的是 “CustomRSS” 插件。本以为安装后就能顺利抓取文章，结果打开 RSS 链接时直接弹出 404 错误，折腾半天总算找到症结所在 —— 原来是没开启伪静态导致的链接格式问题。</div>
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<div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space">先看具体差异：
插件生成的 rss.xml 里，文章地址是https://www.0731119.xyz/rchives/491/
而网站实际的正确文章地址是https://www.0731119.xyz/index.php/archives/491/。</div>
<p> </p>
<div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space">追根溯源，问题出在插件的 URL 生成逻辑上：
Plugin.php 文件里用了Typecho_Router::url()函数生成链接，但这个函数默认不会带上 “index.php” 前缀。对于没开启伪静态的网站来说，缺少这个前缀就会导致链接无效，最终触发 404 错误。</div>
<p> </p>
<div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space">（补充说明：如果后续开启伪静态，服务器会自动处理 “index.php” 的隐藏，此时插件生成的链接也能正常访问。但针对当前未开启伪静态的情况，修改插件的 URL 生成逻辑，让其强制包含 “index.php” 是更直接的解决办法～）</div>
<div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space"> </div>
<div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space">附修改完毕后的源码~</div>
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<pre class="language-php"><?php
if (!defined('__TYPECHO_ROOT_DIR__')) exit;

/**

• 生成站点的 rss.xml 文件，用于 rss 订阅优化。
*
• @package CustomRSS
• @version 1.0.3
• @author 寻鹤
• @link https://bluehe.cn/
• @license GPL-3.0-or-later
*/

class CustomRSS_Plugin implements Typecho_Plugin_Interface
{

public static function activate()
{
    Typecho_Plugin::factory('Widget_Archive')->footer = array('CustomRSS_Plugin', 'generateRSS');
}

public static function deactivate()
{
    @unlink(__TYPECHO_ROOT_DIR__ . '/rss.xml');
}

public static function config(Typecho_Widget_Helper_Form $form)
{
    $numOfPosts = new Typecho_Widget_Helper_Form_Element_Text('numOfPosts', NULL, '10', _t('文章数量'), _t('设定生成 RSS 文件时包含的文章数量'));
    $form->addInput($numOfPosts->addRule('isInteger', _t('文章数量必须是整数')));
}

public static function personalConfig(Typecho_Widget_Helper_Form $form) {}

public static function generateRSS()
{
    $db = Typecho_Db::get();
    $options = Typecho_Widget::widget('Widget_Options');
    $numOfPosts = $options->plugin('CustomRSS')->numOfPosts;

    $rows = $db->fetchAll($db->select()
        ->from('table.contents')
        ->where('type = ?', 'post')
        ->where('status = ?', 'publish')
        ->order('created', Typecho_Db::SORT_DESC)
        ->limit($numOfPosts));

    require_once 'Parsedown.php';
    $Parsedown = new Parsedown();

    $rssFeed = '<?xml version="1.0" encoding="UTF-8" ?>' . PHP_EOL;
    $rssFeed .= '<rss version="2.0"' . PHP_EOL;
    $rssFeed .= 'xmlns:content="http://purl.org/rss/1.0/modules/content/"' . PHP_EOL;
    $rssFeed .= 'xmlns:dc="http://purl.org/dc/elements/1.1/"' . PHP_EOL;
    $rssFeed .= 'xmlns:atom="http://www.w3.org/2005/Atom"' . PHP_EOL;
    $rssFeed .= 'xmlns:slash="http://purl.org/rss/1.0/modules/slash/">' . PHP_EOL;
    $rssFeed .= '<channel>' . PHP_EOL;
    $rssFeed .= '<title>' . htmlspecialchars($options->title) . '</title>' . PHP_EOL;
    $rssFeed .= '<link>' . htmlspecialchars($options->siteUrl) . '</link>' . PHP_EOL;
    $rssFeed .= '<description>' . htmlspecialchars($options->description) . '</description>' . PHP_EOL;
    $rssFeed .= '<atom:link href="' . htmlspecialchars($options->siteUrl . 'rss.xml') . '" rel="self" type="application/rss+xml" />' . PHP_EOL;
    $rssFeed .= '<lastBuildDate>' . date(DATE_RSS) . '</lastBuildDate>' . PHP_EOL;

    foreach ($rows as $row) {
        // 生成带有index.php前缀的URL
        $permalink = Typecho_Router::url('post', $row, $options->siteUrl);
        // 确保URL包含index.php
        if (strpos($permalink, 'index.php') === false) {
            $path = parse_url($permalink, PHP_URL_PATH);
            $permalink = str_replace($path, '/index.php' . $path, $permalink);
        }

        $author = $db->fetchRow($db->select('screenName')
            ->from('table.users')
            ->where('uid = ?', $row['authorId']));

        $rssFeed .= '<item>' . PHP_EOL;
        $rssFeed .= '<title>' . htmlspecialchars($row['title']) . '</title>' . PHP_EOL;
        $rssFeed .= '<link>' . htmlspecialchars($permalink) . '</link>' . PHP_EOL;
        $rssFeed .= '<guid isPermaLink="false">' . htmlspecialchars($permalink) . '</guid>' . PHP_EOL;
        $rssFeed .= '<pubDate>' . date(DATE_RSS, $row['created']) . '</pubDate>' . PHP_EOL;
        $rssFeed .= '<dc:creator>' . htmlspecialchars($author['screenName']) . '</dc:creator>' . PHP_EOL;

        $categories = $db->fetchAll($db->select()
            ->from('table.metas')
            ->join('table.relationships', 'table.metas.mid = table.relationships.mid')
            ->where('table.relationships.cid = ?', $row['cid'])
            ->where('table.metas.type = ?', 'category'));
        if (!empty($categories)) {
            foreach ($categories as $category) {
                $rssFeed .= '<category><![CDATA[' . $category['name'] . ']]></category>' . PHP_EOL;
            }
        }

        $tags = $db->fetchAll($db->select()
            ->from('table.metas')
            ->join('table.relationships', 'table.metas.mid = table.relationships.mid')
            ->where('table.relationships.cid = ?', $row['cid'])
            ->where('table.metas.type = ?', 'tag'));
        if (!empty($tags)) {
            foreach ($tags as $tag) {
                $rssFeed .= '<category><![CDATA[' . $tag['name'] . ']]></category>' . PHP_EOL;
            }
        }

        $customDesc = $db->fetchRow($db->select('str_value')
            ->from('table.fields')
            ->where('cid = ?', $row['cid'])
            ->where('name = ?', 'postjj'));
        if (!empty($customDesc['str_value'])) {
            $rssFeed .= '<description><![CDATA[' . htmlspecialchars($customDesc['str_value']) . ']]></description>' . PHP_EOL;
        } else {
            if (!empty($row['text'])) {
                $htmlContent = $Parsedown->text($row['text']);
                $excerpt = mb_substr(strip_tags($htmlContent), 0, 128, 'UTF-8') . '...';
                $rssFeed .= '<description><![CDATA[' . $excerpt . ']]></description>' . PHP_EOL;
            }
        }

        if (!empty($row['text'])) {
            // 处理 Markdown 内容，去除 <!--markdown--> 注释，确保解析
            $row['text'] = preg_replace('/<!--markdown-->/i', '', $row['text']);
            $htmlContent = $Parsedown->text($row['text']);
            $rssFeed .= '<content:encoded><![CDATA[' . PHP_EOL . $htmlContent . PHP_EOL . ']]></content:encoded>' . PHP_EOL;
        }

        $commentsNum = $db->fetchObject($db->select(array('COUNT(*)' => 'num'))
            ->from('table.comments')
            ->where('cid = ?', $row['cid'])
            ->where('status = ?', 'approved'))->num;

        $commentsLink = $permalink . '#comments';
        $rssFeed .= '<slash:comments>' . htmlspecialchars($commentsNum) . '</slash:comments>' . PHP_EOL;
        $rssFeed .= '<comments>' . htmlspecialchars($commentsLink) . '</comments>' . PHP_EOL;

        $banner = $db->fetchRow($db->select('str_value')
            ->from('table.fields')
            ->where('cid = ?', $row['cid'])
            ->where('name = ?', 'banner'));
        if (!empty($banner['str_value'])) {
            $rssFeed .= '<enclosure url="' . htmlspecialchars($banner['str_value']) . '" length="0" type="image/jpeg" />' . PHP_EOL;
        }

        $rssFeed .= '</item>' . PHP_EOL;
    }

    $rssFeed .= '</channel>' . PHP_EOL;
    $rssFeed .= '</rss>' . PHP_EOL;

    file_put_contents(__TYPECHO_ROOT_DIR__ . '/rss.xml', $rssFeed);
}

}
</pre>
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