1688 Solution Introduction

I、language enum（country）

Multi-language is entered through country, English: "en", Russian: "ru", Vietnamese: "vi", Japanese: "ja", Korean: "ko", French: "fr", Portuguese: "pt" , Spanish: "es", please contact customer service to activate multiple languages.

II、Search filter enum（filter）

Parameter example：filter passes in "shipIn24Hours,shipIn48Hours", and multiple conditions are separated by commas.

Comprehensive experience points： 5 stars（totalEpScoreLv1），4.5 -5.0 stars（totalEpScoreLv2）， 4-4.5 stars （totalEpScoreLv3）， 0-4 stars（totalEpScoreLv4）

24 hours collection rate：<95%（getRate24HLv1）， ≥95%（getRate24HLv2）， ≥99%（getRate24HLv3）

48 hours collection rate：<95%（getRate48HLv1）， ≥95%（getRate48HLv2），≥99%（getRate48HLv3）

certified factory（certifiedFactory） same day delivery（shipInToday）1688 carefully selected （1688Selection）Distribution carefully selected（jxhy） Shipped within 24 hours（shipIn24Hours） Shipped within 48 hours（shipIn48Hours）

7 days no reason refund（noReason7DReturn） Support dropshipping（isOnePsale）Support dropshipping and free shipping（ isOnePsaleFreePost） New products within 7 days（new7 ）New products within 30 days（new30）

Selected globally（isQqyx）Cross-border select pallets（isSelect）

III、Search sorting criteria（sort）

Parameter example：sort{"price":"asc"}，asc-Ascending order desc-descending order，enum：wholesale price-price，Repurchase rate-rePurchaseRate，monthly sales-monthSold

IV、Fields supported by list rankType

complex-Comprehensive list，hot-Bestseller list，goodPrice-price list，anchorHot-Anchor Hot List，anchorNew- Emerging anchor list，anchorRecommend-Anchor hot list

VNHot - Vietnam bestseller list，VNTrend-Vietnam trend list

V、TagInfo enum

isOnePsale-Dropshipping，isOnePsaleFreePostage-Free shipping for one piece，isSupportMix-mixed batch，noReason7DReturn-7 days no reason to return，1688_yx-1688 carefully selected，new7-New arrivals within 7 days

new30-New arrivals within 30 days，isQqyx-Selected globally，select-Cross-border select pallets

VI、API interface signature rules(sign)

/**
 * sign签名字符串生成规则
 */
public static String getSignString(Map<String, Object> params, String secret) {
    // 删除sign签名字段
    params.remove("sign");
    // 由于map是无序的，这里主要是对key进行排序（字典序）
    Set<String> keySet = params.keySet();
    String[] keyArr = keySet.toArray(new String[keySet.size()]);

    // 字典排序
    Arrays.sort(keyArr);

    StringBuilder sbd = new StringBuilder();
    for (String k : keyArr) {
        if (Optional.ofNullable(params.get(k)).isPresent()) {
            sbd.append(k).append("=").append(params.get(k)).append("&");
        }
    }

    // secret最后拼接
    sbd.append("secret=").append(secret);
    return sbd.toString();
}

/**
 * 对生成的sign字符串做MD5加密
 * 字符串转大写
 */
public static String getMD5String(String str) {
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digest = md.digest(str.getBytes());
        StringBuilder sb = new StringBuilder();
        for (byte b : digest) {
            sb.append(String.format("%02x", b));
        }
        return sb.toString().toUpperCase();
    } catch (Exception e) {
        return null;
    }
}