支付寶接口http請求及sign加密

       博主昨天在實現一個需求，因爲用到支付寶接口HTTP方式請求，特意將過程分享記錄下來

       還是要吐槽下支付寶的文檔以及技術人員，根本寫的不詳細，最後還是去看了他們的代碼實現過程，最終實現，下面向大家分享，首先我們先封裝一個基礎類，裏面包含了sign加密、請求url以及處理結果，代碼如下：

<?php
/**
 * 支付寶公共方法
 * Created by PhpStorm.
 * User: pc001
 * Date: 2019/1/24
 * Time: 8:56
 */


/**
 * 獲取支付寶HTTP方式請求URL
 * @param array $params
 * @param string $privatekey
 * @param string $url
 * @return string
 */
function getTarUrl($params = array(), $privatekey = "", $url = "")
{
    #請求數組轉成字符串
    $signString = getSignContent($params);
    #待請求字符串加密獲取sign
    $sign = alonersaSign($signString, $privatekey, "RSA2");
    #將sign帶入數組
    $params["sign"] = $sign;
    #請求鏈接編碼及轉換
    $url = getSignContentUrlencode($params);
    #獲取最終請求URL
    $targetUrl = "https://openapi.alipay.com/gateway.do?" . $url;
    #返回
    return $targetUrl;
}


/**
 * 鏈接拼接
 * @param $params
 * @return string
 */
function getSignContentUrlencode($params)
{
    ksort($params);
    $stringToBeSigned = "";
    $i = 0;
    foreach ($params as $k => $v) {
        if (false === checkEmpty($v) && "@" != substr($v, 0, 1)) {

            // 轉換成目標字符集
            $v = characet($v, "UTF-8");

            if ($i == 0) {
                $stringToBeSigned .= "$k" . "=" . urlencode($v);
            } else {
                $stringToBeSigned .= "&" . "$k" . "=" . urlencode($v);
            }
            $i++;
        }
    }
    unset ($k, $v);
    return $stringToBeSigned;
}


/**
 * 請求參數加密獲取sign
 * @param $data
 * @param $privatekey
 * @param string $signType
 * @param bool $keyfromfile
 * @return string
 */
function alonersaSign($data, $privatekey, $signType = "RSA", $keyfromfile = false)
{

    if (!$keyfromfile) {
        $priKey = $privatekey;
        $res = "-----BEGIN RSA PRIVATE KEY-----\n" .
            wordwrap($priKey, 64, "\n", true) .
            "\n-----END RSA PRIVATE KEY-----";
    } else {
        $priKey = file_get_contents($privatekey);
        $res = openssl_get_privatekey($priKey);
    }

    ($res) or die('您使用的私鑰格式錯誤，請檢查RSA私鑰配置');

    if ("RSA2" == $signType) {
        openssl_sign($data, $sign, $res, OPENSSL_ALGO_SHA256);
    } else {
        openssl_sign($data, $sign, $res);
    }

    if ($keyfromfile) {
        openssl_free_key($res);
    }
    $sign = base64_encode($sign);
    return $sign;
}


/**
 * 數組轉成字符串
 * @param $params
 * @return string
 */
function getSignContent($params)
{
    ksort($params);

    $stringToBeSigned = "";
    $i = 0;
    foreach ($params as $k => $v) {
        if (false === checkEmpty($v) && "@" != substr($v, 0, 1)) {

            // 轉換成目標字符集
            $v = characet($v, "UTF-8");

            if ($i == 0) {
                $stringToBeSigned .= "$k" . "=" . "$v";
            } else {
                $stringToBeSigned .= "&" . "$k" . "=" . "$v";
            }
            $i++;
        }
    }

    unset ($k, $v);
    return $stringToBeSigned;
}


/**
 * 判斷參數值是否爲空
 * @param $value
 * @return bool
 */
function checkEmpty($value)
{
    if (!isset($value))
        return true;
    if ($value === null)
        return true;
    if (trim($value) === "")
        return true;

    return false;
}


/**
 * 轉換成目標字符集
 * @param $data
 * @param $targetCharset
 * @return string
 */
function characet($data, $targetCharset)
{

    if (!empty($data)) {
        $fileType = "UTF-8";
        if (strcasecmp($fileType, $targetCharset) != 0) {
            $data = mb_convert_encoding($data, $targetCharset, $fileType);
            //          $data = iconv($fileType, $targetCharset.'//IGNORE', $data);
        }
    }


    return $data;
}


/**
 * Get請求
 * @param $url
 * @param $apiName
 * @return mixed
 */
function curlAliGet($url, $apiName)
{
    // 初始化curl
    $ch = curl_init();
    // 設置超時
    curl_setopt($ch, CURLOPT_TIMEOUT, 60);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($ch, CURLOPT_HEADER, FALSE);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    // 運行curl，結果以jason形式返回
    $res = curl_exec($ch);
    curl_close($ch);
    #json轉換
    $returnData = json_decode($res);
    #獲取結果體
    $responseNode = str_replace(".", "_", $apiName) . "_response";
    $result = $returnData->$responseNode;
    //返回
    return $result;
}

       封裝完這個方法後，我們便開始在主程序中調用，博主這裏是請求支付寶的發送消息模板接口，代碼如下：

#調用公共方法
require 'aliCom.php';
#獲取參數
$shh_template_id = $_REQUEST["shh_template_id"];
$shh_id = $_REQUEST["shh_id"];
$shh_head_color = $_REQUEST["shh_head_color"];
$shh_url = $_REQUEST["shh_url"];
$shh_action_name = $_REQUEST["shh_action_name"];
$shh_keyword1_value = $_REQUEST["shh_keyword1_value"];
$shh_keyword1_color = $_REQUEST["shh_keyword1_color"];
$shh_keyword2_value = $_REQUEST["shh_keyword2_value"];
$shh_keyword2_color = $_REQUEST["shh_keyword2_color"];
$shh_keyword3_value = $_REQUEST["shh_keyword3_value"];
$shh_keyword3_color = $_REQUEST["shh_keyword3_color"];
$shh_keyword4_value = $_REQUEST["shh_keyword4_value"];
$shh_keyword4_color = $_REQUEST["shh_keyword4_color"];
$shh_remark_value = $_REQUEST["shh_remark_value"];
$shh_remark_color = $_REQUEST["shh_remark_color"];
$shh_first_value = $_REQUEST["shh_first_value"];
$shh_first_color = $_REQUEST["shh_first_color"];
$openId = $_REQUEST["openId"];
#獲取基本配置
$rsaPrivateKey ="你的密鑰";
$alipayrsaPublicKey ="你的公鑰";
#組合內容
$bizCont = "{" .
    "\"to_user_id\":\"" . $openId . "\"," .
    "\"template\":{" .
    "\"template_id\":\"" . $shh_template_id . "\"," .
    "\"context\":{" .
    "\"head_color\":\"" . $shh_head_color . "\"," .
    "\"url\":\"" . $shh_url . "\"," .
    "\"action_name\":\"" . $shh_action_name . "\"," .
    "\"keyword1\":{" .
    "\"color\":\"" . $shh_keyword1_color . "\"," .
    "\"value\":\"" . $shh_keyword1_value . "\"" .
    "        }," .
    "\"keyword2\":{" .
    "\"color\":\"" . $shh_keyword2_color . "\"," .
    "\"value\":\"" . $shh_keyword2_value . "\"" .
    "        }," .
    "\"keyword3\":{" .
    "\"color\":\"" . $shh_keyword3_color . "\"," .
    "\"value\":\"" . $shh_keyword3_value . "\"" .
    "        }," .
    "\"keyword4\":{" .
    "\"color\":\"" . $shh_keyword4_color . "\"," .
    "\"value\":\"" . $shh_keyword4_value . "\"" .
    "        }," .
    "\"first\":{" .
    "\"color\":\"" . $shh_first_color . "\"," .
    "\"value\":\"" . $shh_first_value . "\"" .
    "        }," .
    "\"remark\":{" .
    "\"color\":\"" . $shh_remark_color . "\"," .
    "\"value\":\"" . $shh_remark_value . "\"" .
    "        }" .
    "      }" .
    "    }" .
    "  }";
#生成簽名
$params = array(
    'app_id' => $shh_id,
    'charset' => 'UTF-8',
    'method' => 'alipay.open.public.message.single.send',
    'sign_type' => 'RSA2',
    'timestamp' => date('Y-m-d H:i:s', time()),
    'version' => '1.0',
    'biz_content' => $bizCont
);
#獲取最終請求URL
$url = getTarUrl($params, $rsaPrivateKey, "https://openapi.alipay.com/gateway.do?");
#請求地址
$data = curlAliGet($url, $params["method"]);
#判斷髮送是否成功
if (isset($data->code) && intval($data->code) === 10000) {
    #返回成功
    $json = json_encode(array(
        'status' => 1,
        'msg' => $data->msg
    ));
    echo($json);
    exit();
} else {
    #返回失敗
    $json = json_encode(array(
        'status' => -1,
        'msg' => $data->sub_msg
    ));
    echo($json);
    exit();
}

       這樣我們便成功的完成了支付寶HTTP方式請求接口，而不用依賴支付寶的SDK。