PHP实现支付宝小程序发送模板消息的工具类

背景

最近公司项目一直在围绕着支付宝做应用开发，为了能保证消息能够及时的给用户传递，因此需要开发模板消息的功能，而小程序的模板消息也是最快捷的通知方式

事先准备

1、请仔细阅读支付宝模板消息发送指引：模板消息指引
2、仔细阅读用户的授权文档，用户授权的详细的实现步骤可以见我写的另外一篇文章：《PHP实现支付宝小程序用户授权的工具类》
3、在小程序中加入模板消息的权限，如下图

4、仔细阅读支付宝发送模板消息接口文档：alipay.open.app.mini.templatemessage.send
5、事先通过小程序的form组件收集好对一个的formid，formid组件文档
6、将小程序绑定到生活号上
7、配置一个模板消息编号，详细步骤：小程序--->模板消息，最终配置号的模板消息如下

实现流程

1、通过客户端的form组件，收集好formid，并单独开一个后端接口将formid通过http请求保存到后台，最好是尽可能多的收集formid，比如按钮的点击事件、tab的切换上都可以增加formid组件
2、通过调用alipay.open.app.mini.templatemessage.send接口，给客户端发送模板消息 ，注意支付宝所有的模板消息都是基于生活号进行分发的，所以事先一定要绑定好对应的生活号

实现方法

相关常量

//模板消息的接口方法名称
const API_METHOD_SEND_TPL_MSG = 'alipay.open.app.mini.templatemessage.send';
//模板消息的结果返回节点名称
const RESPONSE_OUTER_NODE_SEND_TPL_MSG = 'alipay_open_app_mini_templatemessage_send_response';
    
    

入口方法

/**
     * 发送小程序模板消息
     * @param $formId
     * @param $to 发送给用户的编号
     * @param $tplId 模板编号
     * @param $tplContent 模板内容
     * @param $page 要跳转的页面
     * @return array
     */
    public static function sendAmpTplMsg($formId,$to,$tplId,$tplContent,$page = ''){
        $param = self::getTplMsgBaseParam($formId,$to,$tplId,$tplContent,$page = '');
        $url = self::buildRequestUrl($param);
        $response = self::getResponse($url,self::RESPONSE_OUTER_NODE_SEND_TPL_MSG);
        return $response;
    }

获取基础参数方法

/**
     * 获取发送模板消息的接口参数
     */
    protected static function getTplMsgBaseParam($formId,$to,$tplId,$tplContent,$page = ''){
        $baseParam = [
            'to_user_id' => $to,
            'form_id' => $formId,
            'user_template_id' => $tplId,
            'page' => $page,
            'data' => $tplContent,
        ];
        $bizContent = json_encode($baseParam,JSON_UNESCAPED_UNICODE);
        $busiParam = [
            'biz_content' => $bizContent
        ];
        $param = self::buildApiBuisinessParam($busiParam,self::API_METHOD_SEND_TPL_MSG);
        return $param;
    }
    
    /**
     * 构建业务参数
     */
    protected static function buildApiBuisinessParam($businessParam,$apiMethod){
        $pubParam = self::getApiPubParam($apiMethod);
        $businessParam = array_merge($pubParam,$businessParam);
        $signContent = self::getSignContent($businessParam);
        error_log('sign_content ===========>'.$signContent);
        $rsaHelper = new RsaHelper();
        $sign = $rsaHelper->createSign($signContent);
        error_log('sign ===========>'.$sign);
        $businessParam['sign'] = $sign;
        return $businessParam;
    }
    
    /**
     * 公共参数
     *
     */
    protected static function getApiPubParam($apiMethod){
        $ampBaseInfo = BusinessHelper::getAmpBaseInfo();
        $param = [
            'timestamp' => date('Y-m-d H:i:s') ,
            'method' => $apiMethod,
            'app_id' => formatArrValue($ampBaseInfo,'appid',config('param.amp.appid')),
            'sign_type' =>self::SIGN_TYPE_RSA2,
            'charset' =>self::FILE_CHARSET_UTF8,
            'version' =>self::VERSION,
        ];
        return $param;
    }
    
    /**
     * 获取签名的内容
     */
    protected static function getSignContent($params) {
        ksort($params);
        $stringToBeSigned = "";
        $i = 0;
        foreach ($params as $k => $v) {
            if (!empty($v) && "@" != substr($v, 0, 1)) {
                if ($i == 0) {
                    $stringToBeSigned .= "$k" . "=" . "$v";
                } else {
                    $stringToBeSigned .= "&" . "$k" . "=" . "$v";
                }
                $i++;
            }
        }
        unset ($k, $v);
        return $stringToBeSigned;
    }
    
    /**
     * 构建请求链接
     */
    protected static function buildRequestUrl($param){
        $paramStr = http_build_query($param);
        return self::API_DOMAIN . $paramStr;
    }

获取返回的结果值

/**
     * 获取返回的数据，对返回的结果做进一步的封装和解析
     */
    protected static function getResponse($url,$responseNode){
        $json = curlRequest($url);
        error_log("result is =========>".$json);
        $response = json_decode($json,true);
        $responseContent = formatArrValue($response,$responseNode,[]);
        $errResponse = formatArrValue($response,self::RESPONSE_OUTER_NODE_ERROR_RESPONSE,[]);
        if($errResponse){
            return $errResponse;
        }
        return $responseContent;
    }

返回结果

如果返回的节点code为10000,则表示消息发送

{
    "alipay_open_app_mini_templatemessage_send_response":{
        "code":"10000",
        "msg":"Success"
      }
    ,"sign":"ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE"
}

调用

$formId = 'MjA4ODMwMjI2MjE4Mzc4MF8xNTQ2ODQ0MTUyNzU0XzA1NQ==';
$openId = '2088302262183780';
$tplId = 'Mzc4OTk2ODU1YzM4NTI3NmY5ZjI2OTdhNGNkZDE2NGQ=';
$content = [
    'keyword1' => [
        'value' => '您的朋友【】偷去了你的能量啦~',
    ],
    'keyword2' => [
        'value' => '朋友偷能量提醒',
    ],
    'keyword3' => [
        'value' => '点我查看详情',
    ],
];
$result = AmpHelper::sendAmpTplMsg($formId,$openId,$tplId,$content,$page= 'pages/index/index');

效果图

附录：完整的工具类

".$json);
        $response = json_decode($json,true);
        $responseContent = formatArrValue($response,$responseNode,[]);
        $errResponse = formatArrValue($response,self::RESPONSE_OUTER_NODE_ERROR_RESPONSE,[]);
        if($errResponse){
            return $errResponse;
        }
        return $responseContent;
    }


    /**
     * 开始所有的业务并获取相应的结果
     */
    protected static function doBusiness($busiParam,$reponseNode){
        $url = self::buildRequestUrl($busiParam);
        $response = self::getResponse($url,$reponseNode);
        return $response;
    }

    /**
     * 获取请求的链接
     */
    protected static function buildQrRequestUrl($mpPage = 'pages/index',$queryParam = []){
        $paramStr = http_build_query(self::getQrBaseParam($mpPage,$queryParam));
        return self::API_DOMAIN . $paramStr;
    }



    /**
     * 构建请求链接
     */
    protected static function buildRequestUrl($param){
        $paramStr = http_build_query($param);
        return self::API_DOMAIN . $paramStr;
    }


    /**
     * 获取用户的基础信息接口
     */
    protected static function getAmpUserBaseParam($token){
        $busiParam = [
            'auth_token' => $token,
        ];
        $param = self::buildApiBuisinessParam($busiParam,self::API_METHOD_GET_USER_INFO);
        return $param;

    }

    /**
     *获取二维码的基础参数
     */
    protected static function getQrcodeBaseParam($page= 'pages/index/index',$queryParam = [],$describe = ''){
        $busiParam = [
            'biz_content' => self::getQrBizContent($page,$queryParam,$describe)
        ];
        $param = self::buildApiBuisinessParam($busiParam,self::API_METHOD_GENERATE_QR);
        return $param;

    }

    /**
     *获取授权的基础参数
     */
    protected static function getAuthBaseParam($code,$refreshToken = ''){
        $busiParam = [
            'grant_type' => 'authorization_code',
            'code' => $code,
            'refresh_token' => $refreshToken,
        ];
        $param = self::buildApiBuisinessParam($busiParam,self::API_METHOD_AUTH_TOKEN);
        return $param;
    }

    /**
     * 获取发送模板消息的接口参数
     */
    protected static function getTplMsgBaseParam($formId,$to,$tplId,$tplContent,$page = ''){
        $baseParam = [
            'to_user_id' => $to,
            'form_id' => $formId,
            'user_template_id' => $tplId,
            'page' => $page,
            'data' => $tplContent,
        ];
        $bizContent = json_encode($baseParam,JSON_UNESCAPED_UNICODE);
        $busiParam = [
            'biz_content' => $bizContent
        ];
        $param = self::buildApiBuisinessParam($busiParam,self::API_METHOD_SEND_TPL_MSG);
        return $param;
    }

    /**
     * 获取支付的基础参数接口
     * @param $outTradeNo 第三方交易订单号
     * @param $totalAmount 待支付的金额
     * @param $subject 主题，可以是商品名称
     * @param $body 描述，可以是商品简介
     * @return array
     */
    protected static function getTradePayBaseParam($outTradeNo,$totalAmount,$subject,$body = ''){
        $baseParam = [
            'out_trade_no' =>$outTradeNo,
            'total_amount' =>$totalAmount,
            'subject' =>$subject,
            'body' =>$body,
            'notify_url' => getDomain().'/alipay/notify'
        ];
        return self::buildBusiBaseParam($baseParam, self::API_METHOD_TRADE_PAY);
    }


    /**
     * 构建基础的业务参数
     */
    protected static function buildBusiBaseParam($param, $apiMethod){
        $bizContent = json_encode($param,JSON_UNESCAPED_UNICODE);
        $busiParam = [
            'biz_content' => $bizContent
        ];
        $param = self::buildApiBuisinessParam($busiParam,$apiMethod);
        return $param;
    }

    /**
     * 构建业务参数
     */
    protected static function buildApiBuisinessParam($businessParam,$apiMethod){
        $pubParam = self::getApiPubParam($apiMethod);
        $businessParam = array_merge($pubParam,$businessParam);
        $signContent = self::getSignContent($businessParam);
        error_log('sign_content ===========>'.$signContent);
        $rsaHelper = new RsaHelper();
        $sign = $rsaHelper->createSign($signContent);
        error_log('sign ===========>'.$sign);
        $businessParam['sign'] = $sign;
        return $businessParam;
    }


    /**
     * 公共参数
     *
     */
    protected static function getApiPubParam($apiMethod){
        $ampBaseInfo = BusinessHelper::getAmpBaseInfo();
        $param = [
            'timestamp' => date('Y-m-d H:i:s') ,
            'method' => $apiMethod,
            'app_id' => formatArrValue($ampBaseInfo,'appid',config('param.amp.appid')),
            'sign_type' =>self::SIGN_TYPE_RSA2,
            'charset' =>self::FILE_CHARSET_UTF8,
            'version' =>self::VERSION,
        ];
        return $param;
    }


    /**
     * 获取签名的内容
     */
    protected static function getSignContent($params) {
        ksort($params);
        $stringToBeSigned = "";
        $i = 0;
        foreach ($params as $k => $v) {
            if (!empty($v) && "@" != substr($v, 0, 1)) {
                if ($i == 0) {
                    $stringToBeSigned .= "$k" . "=" . "$v";
                } else {
                    $stringToBeSigned .= "&" . "$k" . "=" . "$v";
                }
                $i++;
            }
        }
        unset ($k, $v);
        return $stringToBeSigned;
    }


    protected static function convertArrToQueryParam($param){
        $queryParam = [];
        foreach ($param as $key => $val){
            $obj = $key.'='.$val;
            array_push($queryParam,$obj);
        }
        $queryStr = implode('&',$queryParam);
        return $queryStr;
    }

    /**
     * 转换字符集编码
     * @param $data
     * @param $targetCharset
     * @return string
     */
    protected static function characet($data, $targetCharset) {
        if (!empty($data)) {
            $fileType = self::FILE_CHARSET_UTF8;
            if (strcasecmp($fileType, $targetCharset) != 0) {
                $data = mb_convert_encoding($data, $targetCharset, $fileType);
            }
        }
        return $data;
    }

    /**
     * 获取业务参数内容
     */
    protected static function getQrBizContent($page, $queryParam = [],$describe = ''){
        if(is_array($queryParam)){
            $queryParam = http_build_query($queryParam);
        }
        $obj = [
            'url_param' => $page,
            'query_param' => $queryParam,
            'describe' => $describe
        ];
        $bizContent = json_encode($obj,JSON_UNESCAPED_UNICODE);
        return $bizContent;
    }

}