我解决的思路是采用群晖的消息推送服务，触发自己写的PHP代码，让PHP去推送消息给机器人，步骤及代码如下

<?php
header('content-type:text/html;charset=utf-8');
//json的POST方法
function json_post($url, $data = NULL)
{
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    if (!$data) {
        return 'data is null';
    }
    if (is_array($data)) {
        $data = json_encode($data);
        //$data = str_replace('\\/','/',$data);
        //echo($data);
    }
    curl_setopt($curl, CURLOPT_POST, 1);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
    curl_setopt($curl, CURLOPT_HEADER, 0);
    curl_setopt($curl, CURLOPT_HTTPHEADER, array(
        'Content-Type: application/json; charset=utf-8',
        'Content-Length:' . strlen($data),
        'Cache-Control: no-cache',
        'Pragma: no-cache'
    ));
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    $res = curl_exec($curl);
    $errorno = curl_errno($curl);
    if ($errorno) {
        return $errorno;
    }
    curl_close($curl);
    return $res;
}
$api_key = $_REQUEST['key'];
$api_text = $_REQUEST['api_text'];
if ($api_key && $api_text) {
    $url = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=" . $api_key;
    $data   = array(
        "msgtype" => "text",
        "text" => array(
            "content" => $api_text
        )
    );
    $_data = json_post($url, $data);
}
print_r($_data);
exit;

最后是怎么配的，我也没配置成功