准备工作
- 登录微信公众平台 -> 功能 -> 订阅消息 -> 对里面的模板进行选用或者自定义
- 需要在前端小程序端调起消息订阅接口,官方地址:
https://developers.weixin.qq.com/miniprogram/dev/api/open-api/subscribe-message/wx.requestSubscribeMessage.html - 服务端发送消息到服务通知 模板id需要给到后台,后台来进行发出消息,官方文档地址:
https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/subscribe-message/subscribeMessage.send.html
演示
给按钮绑定一个事件触发订阅消息接口,示例如下:
wxml
<van-button round type="info" bindtap="pass" >通过</van-button>
js
pass:function(){
wx.requestSubscribeMessage({
tmplIds: ['模板ID'],
success:(res)=> {
//成功回调
wx.setStorageSync('tmplid', '模板ID')
},
fail(err) {
}
})
wx.navigateTo({
url: '/pages/test/pass'
})
}
点击按钮
选择允许,再点击发送订阅消息,会在服务通知收到一条订阅消息
后端代码(以原生PHP为例)
<?php
ini_set('display_errors', 'On');
$token_file = './mn_access_token';
$life_time = 7200;
//文件存在,并且最后修改时间与当前时间的差小于access_token的有效期,则有
if(file_exists($token_file) && time()-filemtime($token_file)<$life_time){
//直接获取
$access_token = file_get_contents($token_file);
}else{
$appid = '你的appid';
$secret ='你的appsecret';
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$appid&secret=$secret";
$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 500);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_URL, $url);
$res = curl_exec($curl);
curl_close($curl);
$tokenArr = json_decode($res,true);
$access_token = $tokenArr['access_token'];
file_put_contents($token_file, $access_token);
}
$msgUrl = "https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=".$access_token;
$data = [
'touser' => $_POST['openid'],
'template_id' => $_POST['tplid'],
'page' => '/pages/doctor/borrowcheckpass',
'data' =>
[
'number4' =>
[
'value' => date('Ymd').substr(implode(NULL, array_map('ord', str_split(substr(uniqid(), 7, 13), 1))), 0, 8),
],
'name6' =>
[
'value' => '测试患者',
],
'thing8' =>
[
'value' => '测试实物玻片',
],
'phone_number7' =>
[
'value' => '0551-'.mt_rand(1000000,9999999),
],
'amount2' =>[
'value' =>mt_rand(1,100),
]
],
];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $msgUrl);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
// POST数据
curl_setopt($ch, CURLOPT_POST, 1);
// 把post的变量加上
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
$output = curl_exec($ch);
curl_close($ch);
echo $output;
其中data参数格式可以模板详情