微信小程序开发-获取微信运动步数

                                                        微信小程序开发-获取微信运动步数

思路：小程序传参数code,encryptedData,iv给后台，后台把encryptedData数据解密即可。

步骤：
1、根据 appid,secret,code 获取到 session_key
API地址为：https://developers.weixin.qq.com/miniprogram/dev/dev_wxwork/dev-doc/qywx-api/login/code2session.html

2、获取微信运动加密数据（如果开通了微信运动权限的话） encryptedData,iv
API地址为：https://developers.weixin.qq.com/miniprogram/dev/api/open-api/werun/wx.getWeRunData.html

3、根据参数 appid,session_key,encryptedData,iv 解密微信运动数据
API地址为：https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/signature.html
注：这个地址有多种编程语言解密encryptedData数据的示例代码，

地址为：https://res.wx.qq.com/wxdoc/dist/assets/media/aes-sample.eae1f364.zip
如下图所示

4、PHP代码

public function getstepAction(){
	$post = $_POST;	//POST方式传，GET传：会把参数中的+号解析成空格，会有这个问题。
	$code = isset( $post['code'] ) ? $post['code'] : '';
	$encryptedData= isset( $post['encryptedData'] ) ? $post['encryptedData'] : '';;
	$iv = isset( $post['iv'] ) ? $post['iv'] : '';;
	if( !$code )	die('缺少code参数！');
	
	//根据参数获取session_key
	$appid = '已知';
	$appsecret = '已知';
	$weixin = $this->curl_get_https( "https://api.weixin.qq.com/sns/jscode2session?appid=$appid&secret=$appsecret&js_code=$code&grant_type=authorization_code" );
	//$weixin = file_get_contents("https://api.weixin.qq.com/sns/jscode2session?appid=$appid&secret=$appsecret&js_code=$code&grant_type=authorization_code");

	$jsondecode = json_decode($weixin, true); //json字符串转为数组
	//var_dump($array);die;
	//$openid = isset( $array['openid'] ) ? $array['openid'] : '';	//获取openid
	//$unionid = isset( $array['unionid'] ) ? $array['unionid'] : '';//获取
	$session_key = isset( $array['session_key'] ) ? $array['session_key'] : '';
	//if( ! $openid )	die('openid获取失败！');
	
	//根据session_key,encryptedData,iv 解析字符串，获取步数信息
	if($encryptedData && $iv){
		require_once APP_PATH."/library/Wx/wxBizDataCrypt.php";	//引入解密类，注意大小写
		$pc = new WXBizDataCrypt($appid, $session_key);
		$errCode = $pc->decryptData( $encryptedData, $iv, $stepData );
		if ($errCode == 0) {	//解析成功，更新数据
			$stepData = json_decode($stepData, true);	//最近30天步数信息
			$stepData = $stepData['stepInfoList'];
			$stepData = end($stepData);
			$step = $stepData['step'];	//拿到了最近一天的步数，看你怎么处理了
			echo "最近一天的步数为 [ {$step} ]步";
		}else {
			print($errCode . "\n");
		}
	}
	die();
}

/**
 *
 * @todo GET方式调用接口，返回json格式数据
 * @param unknown $url
 *        	请求路径
 * @return unknown json格式数据
 */
function curl_get_https($url, $post_data = []) {
	$curl = curl_init (); // 启动一个CURL会话

	curl_setopt ( $curl, CURLOPT_URL, $url );
	curl_setopt ( $curl, CURLOPT_HEADER, 0 );
	curl_setopt ( $curl, CURLOPT_RETURNTRANSFER, 1 );
	curl_setopt ( $curl, CURLOPT_SSL_VERIFYPEER, false ); // 跳过证书检查

	if ($post_data) {
		// 设置post方式提交
		curl_setopt ( $curl, CURLOPT_POST, 1 );
		// 设置post数据

		curl_setopt ( $curl, CURLOPT_POSTFIELDS, $post_data );
	}
	// curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, true); // 从证书中检查SSL加密算法是否存在
	$tmpInfo = curl_exec ( $curl ); // 返回api的json对象
	curl_close ( $curl ); // 关闭URL请求

	return $tmpInfo; // 返回json对象
}

5、返回结果 $stepData ：用户过去三十天微信运动步数

{
    "stepInfoList": [
        {
            "timestamp": 1557158400,
            "step": 0
        },
        {
            "timestamp": 1557244800,
            "step": 0
        },
        {
            "timestamp": 1557331200,
            "step": 0
        },
        {
            "timestamp": 1557417600,
            "step": 0
        },
        {
            "timestamp": 1557504000,
            "step": 0
        },
        {
            "timestamp": 1557590400,
            "step": 0
        },
        {
            "timestamp": 1557676800,
            "step": 0
        },
        {
            "timestamp": 1557763200,
            "step": 0
        },
        {
            "timestamp": 1557849600,
            "step": 0
        },
        {
            "timestamp": 1557936000,
            "step": 0
        },
        {
            "timestamp": 1558022400,
            "step": 0
        },
        {
            "timestamp": 1558108800,
            "step": 0
        },
        {
            "timestamp": 1558195200,
            "step": 0
        },
        {
            "timestamp": 1558281600,
            "step": 0
        },
        {
            "timestamp": 1558368000,
            "step": 0
        },
        {
            "timestamp": 1558454400,
            "step": 0
        },
        {
            "timestamp": 1558540800,
            "step": 0
        },
        {
            "timestamp": 1558627200,
            "step": 0
        },
        {
            "timestamp": 1558713600,
            "step": 0
        },
        {
            "timestamp": 1558800000,
            "step": 0
        },
        {
            "timestamp": 1558886400,
            "step": 0
        },
        {
            "timestamp": 1558972800,
            "step": 0
        },
        {
            "timestamp": 1559059200,
            "step": 0
        },
        {
            "timestamp": 1559145600,
            "step": 0
        },
        {
            "timestamp": 1559232000,
            "step": 0
        },
        {
            "timestamp": 1559318400,
            "step": 0
        },
        {
            "timestamp": 1559404800,
            "step": 0
        },
        {
            "timestamp": 1559491200,
            "step": 0
        },
        {
            "timestamp": 1559577600,
            "step": 0
        },
        {
            "timestamp": 1559664000,
            "step": 0
        },
        {
            "timestamp": 1559750400,
            "step": 2010
        }
    ],
    "watermark": {
        "timestamp": 1559788371,
        "appid": "wxd************"
    }
}