Gunakan PHP untuk menyambung ke antara muka API Platform Perindustrian JD untuk merealisasikan fungsi pertanyaan harga!

<?php
class JdApi {
    private $appKey; // 申请的API密钥中的appKey
    private $appSecret; // 申请的API密钥中的appSecret
    
    public function __construct($appKey, $appSecret) {
        $this->appKey = $appKey;
        $this->appSecret = $appSecret;
    }
    
    public function getPrice($sku) {
        $url = 'https://api.jd.com/routerjson'; // API接口地址
        $method = 'jingdong.price.read.queryPriceInfo'; // API接口方法名
        $timestamp = date('Y-m-d H:i:s'); // 当前时间戳
        
        $params = array(
            'app_key' => $this->appKey,
            'method' => $method,
            'timestamp' => $timestamp,
            'v' => '2.0',
            'sku' => $sku,
            'signMethod' => 'md5',
            'format' => 'json',
            'sign' => '',
        );
        
        // 生成签名
        $sign = $this->generateSign($params);
        $params['sign'] = $sign;
        
        // 发起API请求
        $result = $this->curlPost($url, $params);
        
        return $result;
    }
    
    private function generateSign($params) {
        ksort($params); // 参数按键名排序
        
        $str = $this->appSecret;
        foreach ($params as $key => $value) {
            $str .= "$key$value";
        }
        $str .= $this->appSecret;
        
        $sign = strtoupper(md5($str)); // 生成大写的md5签名
        
        return $sign;
    }
    
    private function curlPost($url, $params) {
        // 将参数拼接成GET请求的URL
        $url .= '?' . http_build_query($params);
        
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);
        
        $result = curl_exec($ch);
        curl_close($ch);
        
        return $result;
    }
}
?>

<?php
$appKey = 'your_app_key';
$appSecret = 'your_app_secret';

$jdApi = new JdApi($appKey, $appSecret);

$sku = '123456'; // 要查询价格的商品SKU
$result = $jdApi->getPrice($sku);

// 处理查询结果
$jsonData = json_decode($result, true);
if ($jsonData && isset($jsonData['jingdong_price_read_queryPriceInfo_responce']) && isset($jsonData['jingdong_price_read_queryPriceInfo_responce']['result'])) {
    $price = $jsonData['jingdong_price_read_queryPriceInfo_responce']['result']['price'];
    echo "价格: $price 元";
} else {
    echo "查询失败";
}
?>