首先在官网下载示例代码, 选php的, 这里有个坑 官方的php文件,编码是UTF-8+的, 所以要把文件改为UTF-8；然后在Thinkphp5 extend文件夹下建立Wxxcx命名空间,把官方的几个类文件放进去(这里要注意文件夹名, 命名空间名, 类名的, 大小写,一定要一样,官方的文件名和类名大小写不一样)

然后是自己的thinkphp接口代码:

<?php  
/** 
 * Created by PhpStorm. 
 * User: leeoo 
 * Date: 2017/9/14 0014 
 * Time: 10:43 
 */  
namespace app\api\controller\v1;  
use think\Loader;  
use think\Request;  
use Workerman\Protocols\Http;  
use Wxxcx\WXBizDataCrypt;  
use first\second\Foo;  
class Index  
{  
    public function index($id)  
    {  
        return json(['msg' => $id]);  
    }  
    public function dologin()  
    {  
        $code = Request::instance()->param('code');  
        $encryptedData = Request::instance()->param('encryptedData');  
        $iv = Request::instance()->param('iv');  
        $appid = "你的小程序appid";  
        $secret = "你的小程序secret";  
        //appid={$appid}&secret={$secret}&js_code={$code}&grant_type=authorization_code  
        $param = array(  
            'appid' => $appid,  
            'secret' => $secret,  
            'js_code' => $code,  
            'grant_type' => 'authorization_code'  
        );  
    //http函数为封装的请求函数  
        $res = http(