我只需通过以下方式处理WordPress的外部请求：http://localhost/vku.dev/wp-json/notifications.无需向整个URL添加其他部分。所以，我的代码是：

function testREST(WP_REST_Request $request) {
    error_log(\'Route "notifications" works\');
    return \'Route "notifications" works\';
    //return new WP_REST_Response(true, 200);
}
add_action(\'rest_api_init\', function () {
    /*
    // Inline function also not working
    register_rest_route(\'notifications\', \'\', [
        \'methods\' => \'GET\',
        \'callback\' => function (WP_REST_Request $request) {
            error_log(\'Route "notifications" works\');
            return \'Route "notifications" works\';
            //return new WP_REST_Response(true, 200);
        },
    ]);
    */
    register_rest_route(\'notifications\', \'\', [
        \'methods\' => \'GET\',
        \'callback\' => \'testREST\',
    ]);
});

代码看起来最简单，但不起作用-http://localhost/vku.dev/wp-json/notifications向我提供某个对象的转储，无法访问事件处理程序的主体。怎么了？

add_action(\'rest_api_init\', function () {
    register_rest_route(\'vku/notifications\', \'test\', [
        \'methods\' => \'GET\',
        \'callback\' => function (WP_REST_Request $request) {
            error_log(\'Route "notifications" works\');
            return new WP_REST_Response(true, 200);
        },
    ]);
});