首先讲两个注意事项
1、小程序和微信公众号的用户openid是不同的。
2、小程序需要用户手动授权订阅消息通知（一次性订阅是订阅一次发一次，长期订阅可以多发）。
关于小程序和公众号AppID和AppSecret的获取可以自行百度一下，挺简单的。
小程序订阅消息
1.1 在后台选中自己需要的模板和相应的字段，注意不同的字段字符长度和格式的问题。
参考文档：subscribeMessage.send | 微信开放文档
【订阅消息参数值内容限制说明】
1.2 小程序授权按钮
<button class="btn" bindtap="onSubscribe" hover-class="btn-hover">订阅挂号成功提醒</button>
//开启消息通知onSubscribe: function(e) {// 消息推送wx.requestSubscribeMessage({tmplIds: ['daPvT7nLnOY***************F_A9VCBI'], //你的模板idsuccess(res) { console.log('授权成功', res)},fail(res) {console.log('授权失败', res)}})},
1.3 我这里用的HTTPS发送，代码是php
<?php/** 微信小程序消息订阅*/ public function actionSubmessage($openid = null){//配置appid$appid = "";//配置appscret$secret = "";$url="https://api./cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$secret;//获取access_token$access_token = $this->geturl($url)["access_token"];$urlz="https://api./cgi-bin/message/subscribe/send?access_token=".$access_token;//模板id$template_id = "daPvT7nLnO*********************A9VCBI";$data = [] ;//接收者（用户）的 openid$data['touser'] = $openid;//所需下发的订阅模板id$data['template_id'] = $template_id ;//点击模板卡片后的跳转页面，仅限本小程序内的页面。支持带参数,（示例index?foo=bar）。该字段不填则模板无跳转。$data['page'] = "pages/index/index" ;//模板内容 phrase date thing 这些类型有字符长短要求，注意看文档$data['data'] = ["phrase2" => ['value' => '测试'],"phrase6" => ['value' => '就诊李主任'],"date14" => ['value' => '06月11日'],"date8" => ['value'=>'8:30 ~ 17:00'],'thing18'=>['value'=> '呼吸内科']];//跳转小程序类型：developer为开发版；trial为体验版；formal为正式版；默认为正式版$data['miniprogram_state'] = 'developer';var_dump($this->posturl($urlz,$data));}/** curl get请求封装,返回json数据格式数据*/public function geturl($url){$headerArray =array("Content-type:application/json;","Accept:application/json");$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch,CURLOPT_HTTPHEADER,$headerArray);$output = curl_exec($ch);curl_close($ch);$output = json_decode($output,true);return $output;}/** curl post请求封装,返回json数据格式数据*/public function posturl($url,$data){$data = json_encode($data);$headerArray =array("Content-type:application/json;charset='utf-8'","Accept:application/json");$curl = curl_init();curl_setopt($curl, CURLOPT_URL, $url);curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);curl_setopt($curl, CURLOPT_SSL_VERIFYHOST,FALSE);curl_setopt($curl, CURLOPT_POST, 1);curl_setopt($curl, CURLOPT_POSTFIELDS, $data);curl_setopt($curl,CURLOPT_HTTPHEADER,$headerArray);curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);$output = curl_exec($curl);curl_close($curl);return json_decode($output,true);}?>
公众号模板消息推送
2.1 微信公众号开启模板消息推送
2.2 这个前端没啥特别的，直接上后端代码，用的tp6框架，可以根据实际情况自己改
类文件 WxMessage.php
<?php//WxMessage.phpnamespace Think;class WxMessage{//服务号var $appid = ''; var $appsecret = '';//构造函数，获取Access_Tokenpublic function __construct($appid = NULL, $appsecret = NULL){if($appid && $appsecret){$this->appid = $appid;$this->appsecret = $appsecret;}//$this->lasttime = 1654756504;//$this->access_token = "57_cu07w68F9BPur3VvmkFPS6i_OLkN5dGJeCeJn8u8PKNRgxOmQ4PtCVesDNFwIj-6ExGmHhM2vzoparead5OnW7FZmuYWEyr2JwszreshbNdDQ8mtDaGncwnbgVVXjf8UKvaagCfqOct5hS97ZQHhAFALCT";//if(time() > ($this->lasttime + 7200)){$url = "https://api./cgi-bin/token?grant_type=client_credential&appid=".$this->appid."&secret=".$this->appsecret;$res = $this->http_request($url);$result = json_decode($res, true);//echo $result["access_token"];$this->access_token = $result["access_token"];$this->lasttime = time();//}}public function send_template_message($data){$url = "https://api./cgi-bin/message/template/send?access_token=".$this->access_token;$res = $this->http_request($url, $data);return json_decode($res, true);}//https请求(支持GET和POST)protected function http_request($url, $data = null){$curl = curl_init();curl_setopt($curl, CURLOPT_URL, $url);curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);if (!empty($data)){curl_setopt($curl, CURLOPT_POST, 1);curl_setopt($curl, CURLOPT_POSTFIELDS, $data);}curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);$output = curl_exec($curl);curl_close($curl);return $output;}}?>
<?phpnamespace app\admin\controller;use think\Controller;use think\Validate;use think\facade\Request;use think\facade\Db;use think\facade\Session;use think\facade\View;use think\WxMessage; //引入类class Weixinqf extends Base{//发送提醒 public function sendMessage(){ //构造消息模板$openid = ""; //自己去获取$zname = "程序测试";$zsource = "公众号—就诊(李主任)";$zdate = "-06-08(上午)";$template = $this->orderSuccess($openid,'',$zname,$zsource,$zdate); //实例化消息类$message = new WxMessage();//发送消息$message->send_template_message(urldecode(json_encode($template)));}//成功通知模板/** openid:微信唯一标识* zname:姓名* zsource:来源* zdate:时间*/public function orderSuccess($openid=null,$url=null,$zname=null,$zsource=null,$zdate=null){$template = array("touser" => "{$openid}","template_id" => "7zQSy****************KOlsc",//'url' => "{$url}", //也可以配置这个，就可以进入自己配置的网址"miniprogram" => array( //我这里引入的小程序"appid" => "*******", "pagepath"=>"pages/index/index"), 'data' => array('first' => array('value' =>urlencode('挂号成功'),'color' => "#FF0000"),'keyword1' => array('value'=>urlencode($zname)),'keyword2' => array('value'=>urlencode($zsource)),'keyword3' => array('value'=>urlencode($zdate)),'keyword4' => array('value'=>urlencode('8:30 - 17:00')),'keyword5' => array('value'=>urlencode('呼吸内科')),'remark' => array('value'=>urlencode('凭预约短信和就诊人身份证在门诊一楼导医台取号就诊，一对一问诊，医务人员全程陪同。详情请咨询：028-******！'),'color' => "#FF0000"),),);return $template;}}?>
