wordpress修改固定链接后301重定向的方法

青衣

以前小站的固定链接好不人性化,结构是/%year%/%monthnum%/%postname%/,这样看起来又不直观又长的,今天做了一个301重定向,然后修改了新的固定链接,现在的固定链接格式是/%postname%.html,这样看起来短了好多,也直观了好多,
不过小站已经被搜索引擎收录了好多,以前的地址都无法访问了,所以要做好301重定向,跳转到新的固定链接所生成的地址中去.要不然都是404就悲剧了.下面贴出解决办法

代码如下:

$rewrite_config = array();
$rewrite_config['highpriority'] = true ;
$rewrite_config['rewrite'] = array();
$rewrite_config['oldstructure'] = "/%year%/%monthnum%/%postname%/";
 
function wpdaxue_pm_the_posts($post) {
  global $wp;
  global $wp_rewrite;
  global $rewrite_config;
 
  $rewrite_config['rewrite'] = $wp_rewrite->generate_rewrite_rule($rewrite_config['oldstructure'], false, true, true, true);
  if ($post != NULL && is_single() && $rewrite_config['oldstructure'] != $wp_rewrite->permalink_structure) {
    if (array_key_exists($wp->matched_rule, $rewrite_config['rewrite'])) {
    // ok, we need to generate a 301 Permanent redirect here.
      header("HTTP/1.1 301 Moved Permanently", TRUE, 301);
      header('Status: 301 Moved Permanently');
      $permalink = get_permalink($post[0]->ID);
      if (is_feed()) {
        $permalink = trailingslashit($permalink) . 'feed/';
      }
      header("Location: ". $permalink);
      exit();
    }
  }
  return $post;
}
 
function wpdaxue_pm_post_rewrite_rules($rules) {
  global $wp_rewrite;
  global $rewrite_config;
  $oldstruct = $rewrite_config['oldstructure'];
 
  if ($oldstruct != NULL && $oldstruct != $wp_rewrite->permalink_structure) {
    $rewrite_config['rewrite'] = $wp_rewrite->generate_rewrite_rule($oldstruct, false, true, true, true);
    if ($rewrite_config ['highpriority'] == true) {
      return array_merge($rewrite_config['rewrite'], $rules);
    } else {
      return array_merge($rules, $rewrite_config['rewrite']);
    }
  }
  return $rules;
}
add_filter('the_posts', 'wpdaxue_pm_the_posts', 20);
add_filter('post_rewrite_rules', 'wpdaxue_pm_post_rewrite_rules');

将我的$rewrite_config['oldstructure'] = “/%year%/%monthnum%/%postname%/”后面的/%year%/%monthnum%/%postname%/修改成你自己的旧的固定链接格式,然后将这段代码加入到主题的function.php中,然后设置成新的固定链接格式就搞定了.