wordpress的固定链接有很多种，前五种不需要伪静态，但是“漂亮”的固定链接（第五种）则需要伪静态组件，wordpress官方只提供了mod_rewrite的伪静态规则，但是IIS不支持mod_rewrite，网上找到的httpd.ini规则又太麻烦。

现在，只需要一个文件就可以解决

 Websites > [Site Name] > Properties > Custom Errors >
// 404 & 404;2 & 404;3 > URL (Requires a '/' prefix in IIS).
$thisfile = '404-handler.php';

$_SERVER['ORIG_PATH_TRANSLATED'] = str_replace($thisfile, $default, $_SERVER['ORIG_PATH_TRANSLATED']);
$_SERVER['SCRIPT_FILENAME'] = str_replace($thisfile, $default, $_SERVER['SCRIPT_FILENAME']);
$_SERVER['ORIG_PATH_INFO'] = str_replace($thisfile, $default, $_SERVER['ORIG_PATH_INFO']);
$_SERVER['SCRIPT_NAME'] = str_replace($thisfile, $default, $_SERVER['SCRIPT_NAME']);
$_SERVER['PHP_SELF'] = str_replace($thisfile, $default, $_SERVER['PHP_SELF']);
$_SERVER['PATH_INFO'] = false;

$qs =& $_SERVER['QUERY_STRING'];
$ru =& $_SERVER['REQUEST_URI'];
$pos = strrpos($qs, '://');
$pos = strpos($qs, '/', $pos + 4);
$_SERVER['URL'] = $ru = substr($qs, $pos);
$qs = trim(stristr($ru, '?'), '?');

// Required for WordPress 2.8+
$_SERVER['HTTP_X_ORIGINAL_URL'] = $ru;

// Fix GET vars
foreach ( $_GET as $var => $val ) {
  if ( substr($var, 0, 3) == '404') {
    if ( strstr($var, '?') ) {
      $newvar = substr($var, strpos($var, '?') + 1);
      $_GET[$newvar] = $val;
    }
    unset($_GET[$var]);
  }
  break;
}
include($default);
?>

保存为.php文件，然后到iis里面把404页面指定为这个页面。

关于中文固定链接乱码问题

用编辑器（不要用记事本，最好用notepad++）编辑/wp-includes/class-wp.php第142行

将

$pathinfo = $_SERVER['PATH_INFO'];

替换为

$pathinfo = mb_convert_encoding($_SERVER['PATH_INFO'], "UTF-8", "GBK");

再找到第147行

将

$req_uri = $_SERVER['REQUEST_URI'];

替换为

$req_uri = mb_convert_encoding($_SERVER['REQUEST_URI'], "UTF-8", "GBK");

保存即可。  直接下载此文件