wordpress ajax表单提交时发现404

jQuery.ajax({
    url: '<?php echo admin_url('admin-ajax.php'); ?>',
    type: 'POST',
    data: {action: 'my_action', param: 'value'},
    success: function(response) {
        console.log(response);
    },
    error: function(jqXHR, textStatus, errorThrown) {
        console.log(textStatus, errorThrown);
    }
});

find /path/to/wordpress -type d -exec chmod 755 {} \;
find /path/to/wordpress -type f -exec chmod 644 {} \;

// 在 functions.php 或自定义插件中
add_action('wp_ajax_my_action', 'my_action_callback');
add_action('wp_ajax_nopriv_my_action', 'my_action_callback');

function my_action_callback() {
    // 处理 AJAX 请求的代码
    echo 'Success';
    wp_die(); // 重要：结束 AJAX 调用
}

# .htaccess 示例
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

<form id="my-form">
    <input type="text" name="param" value="value">
    <button type="submit">Submit</button>
</form>

jQuery(document).ready(function($) {
    $('#my-form').on('submit', function(e) {
        e.preventDefault();
        $.ajax({
            url: '<?php echo admin_url('admin-ajax.php'); ?>',
            type: 'POST',
            data: $(this).serialize() + '&action=my_action',
            success: function(response) {
                alert(response);
            },
            error: function(jqXHR, textStatus, errorThrown) {
                console.log(textStatus, errorThrown);
            }
        });
    });
});

add_action('wp_ajax_my_action', 'my_action_callback');
add_action('wp_ajax_nopriv_my_action', 'my_action_callback');

function my_action_callback() {
    // 处理表单数据
    $param = $_POST['param'];
    echo 'Received parameter: ' . esc_html($param);
    wp_die();
}