微信小程序登录

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小程序可以通过微信官方提供的登录能力方便地获取微信提供的用户身份标识，快速建立小程序内的用户体系。

参考链接：https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/login.html

 

说明

1. 调用 wx.login() 获取 临时登录凭证code ，并回传到开发者服务器。
2. 调用 auth.code2Session 接口，换取 用户唯一标识 OpenID 、 用户在微信开放平台帐号下的唯一标识UnionID（若当前小程序已绑定到微信开放平台帐号） 和 会话密钥 session_key。

之后开发者服务器可以根据用户标识来生成自定义登录态，用于后续业务逻辑中前后端交互时识别用户身份。

注意事项

1. 会话密钥 session_key 是对用户数据进行 加密签名 的密钥。为了应用自身的数据安全，开发者服务器不应该把会话密钥下发到小程序，也不应该对外提供这个密钥。
2. 临时登录凭证 code 只能使用一次

 

 

下面是微信小程序登录的服务端代码实例，

但是注意的是 最新小程序无法获取用户头像和昵称，具体查看官网接口调整：https://developers.weixin.qq.com/community/develop/doc/00022c683e8a80b29bed2142b56c01

 

 

<?php

/*
 *  +----------------------------------------------------------------------
 *  | wangqy
 *  +----------------------------------------------------------------------
 *  | Copyright (c) 2023 http://upwqy.com All rights reserved.
 *  +----------------------------------------------------------------------
 *  | Author: wangqy <529857614@qq.com>
 *  +----------------------------------------------------------------------
 */

namespace common\service\wechat\applet;

use think\exception\ValidateException;
use wxapp\aes\WXBizDataCrypt;

class AuthService
{
    public const URL = 'https://api.weixin.qq.com/sns/jscode2session?appid=%s&secret=%s&js_code=%s&grant_type=authorization_code';

    protected $appId;
    protected $appSecret;
    protected $jsCode;
    protected $iv;
    protected $encryptedData;

    protected $openId;
    protected $sessionKey;

    protected $unionId;
    protected $gender;
    protected $nickname;
    protected $avatar;

    /**
     * @param mixed $appId
     */
    public function setAppId($appId): void
    {
        $this->appId = $appId;
    }

    /**
     * @param mixed $appSecret
     */
    public function setAppSecret($appSecret): void
    {
        $this->appSecret = $appSecret;
    }

    /**
     * @param mixed $jsCode
     */
    public function setJsCode($jsCode): void
    {
        $this->jsCode = $jsCode;
    }

    /**
     * @param mixed $iv
     */
    public function setIv($iv): void
    {
        $this->iv = $iv;
    }

    /**
     * @param mixed $encryptedData
     */
    public function setEncryptedData($encryptedData): void
    {
        $this->encryptedData = $encryptedData;
    }

    /**
     * @return mixed
     */
    public function getOpenId()
    {
        return $this->openId;
    }

    /**
     * @return mixed
     */
    public function getSessionKey()
    {
        return $this->sessionKey;
    }

    /**
     * @return mixed
     */
    public function getUnionId()
    {
        return $this->unionId;
    }

    /**
     * @return mixed
     */
    public function getGender()
    {
        return $this->gender;
    }

    /**
     * @return mixed
     */
    public function getNickname()
    {
        return $this->nickname;
    }

    /**
     * @return mixed
     */
    public function getAvatar()
    {
        return $this->avatar;
    }

    public function jscode2session()
    {
        $url = sprintf(self::URL, $this->appId, $this->appSecret, $this->jsCode);

        $result = curl_get($url);

        $result = json_decode($result, true);
        if (!empty($result['errcode'])) {
            throw new ValidateException('操作失败!errcode:'.$result['errcode']);
        }

        $this->openId = $result['openid'];
        $this->sessionKey = $result['session_key'];
    }

    // 解密数据
    public function decryptData()
    {
        $wxUserData = [];

        $pc = new WXBizDataCrypt($this->appId, $this->sessionKey);
        $errCode = $pc->decryptData($this->encryptedData, $this->iv, $wxUserData);

        if (0 != $errCode) {
            throw new ValidateException('操作失败!errcode:'.$errCode);
        }

        $this->unionId = $wxUserData['unionId'] ?? null;
        $this->gender = $wxUserData['gender'];
        $this->nickname = $wxUserData['nickName'];
        $this->avatar = $wxUserData['avatarUrl'];

        return $wxUserData;
    }
}

 

 

  $wxAppletService = new AuthService();
  $wxAppletService->setAppId($this->appId);
  $wxAppletService->setAppSecret($this->appSecret);
  $wxAppletService->setJsCode($jsCode);
  $wxAppletService->setIv($iv);
  $wxAppletService->setEncryptedData($encryptedData);
  $wxAppletService->jscode2session();
  $wxData = $wxAppletService->decryptData();

  $wxAppletService->getAvatar()

 

微信解密类

gitee: https://gitee.com/wangqy415/wxbiz-data-crypt/tree/master/wxapp/aes

百度网盘：https://pan.baidu.com/s/1z28Q4yUnQMUp9YFhuMwM6w?pwd=1d7s

 

 

 

发布时间 : 2023-02-28，阅读量：1262

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