微信公众号跳转小程序

2023-10-16 04:09:36

微信公众号跳转小程序，详细教程

准备工作

拥有一个微信公众号
拥有一个小程序

前端H5代码

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <script src="https://res.wx.qq.com/open/js/jweixin-1.6.0.js"></script>
</head>
<body>
  <button id="jump">跳转小程序</button>

  <script>
    wx.config({
      debug: false,
      appId: '你的小程序AppId',
      timestamp: timestamp,
      nonceStr: nonceStr,
      signature: signature
    });

    wx.ready(function () {
      document.getElementById('jump').addEventListener('click', function () {
        wx.miniProgram.navigateTo({
          appId: '你的小程序AppId',
          path: '页面路径',
          extraData: {
            foo: 'bar'
          },
          success(res) {
            // 跳转成功
          },
          fail(err) {
            // 跳转失败
          }
        });
      });
    });
  </script>
</body>
</html>

后端PHP代码

<?php
// 获取微信公众号配置参数
$appid = '你的微信公众号AppId';
$secret = '你的微信公众号AppSecret';

// 获取access_token
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$appid}&secret={$secret}";
$access_token = json_decode(file_get_contents($url), true)['access_token'];

// 获取跳转小程序所需参数
$url = "https://api.weixin.qq.com/cgi-bin/component/jsapi_ticket?access_token={$access_token}";
$ticket = json_decode(file_get_contents($url), true)['ticket'];

// 获取当前时间戳和随机字符串
$timestamp = time();
$nonceStr = uniqid();

// 生成签名
$string = "jsapi_ticket={$ticket}&noncestr={$nonceStr}&timestamp={$timestamp}&url={$_SERVER['REQUEST_URI']}";
$signature = sha1($string);

// 返回给前端H5页面
echo json_encode([
  'appId' => $appid,
  'timestamp' => $timestamp,
  'nonceStr' => $nonceStr,
  'signature' => $signature
]);