分组支付接入文档

import hashlib

def json_to_query_string(data: dict) -> str:
    pairs = []
    for key, value in data.items():
        if key == "sign":
            continue
        if isinstance(value, dict):
            dict_str = str(value).replace('"', "'")
            pairs.append(f'{key}="{dict_str}"')
        else:
            pairs.append(f"{key}={value}")
    pairs.sort()
    return "&".join(pairs)

def make_sign(params: dict, token: str) -> str:
    sign_raw = json_to_query_string(params) + "&token=" + token
    return hashlib.md5(sign_raw.encode("utf-8")).hexdigest()

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;

public class HuibanSign {
    public static String md5(String s) throws Exception {
        byte[] digest = MessageDigest.getInstance("MD5")
                .digest(s.getBytes(StandardCharsets.UTF_8));
        StringBuilder sb = new StringBuilder();
        for (byte b : digest) {
            sb.append(String.format("%02x", b));
        }
        return sb.toString();
    }

    public static String makeSign(Map<String, String> params, String token) throws Exception {
        List<String> keys = new ArrayList<>(params.keySet());
        Collections.sort(keys);
        StringBuilder sb = new StringBuilder();
        for (String key : keys) {
            if ("sign".equals(key)) continue;
            if (sb.length() > 0) sb.append("&");
            sb.append(key).append("=").append(params.get(key));
        }
        sb.append("&token=").append(token);
        return md5(sb.toString());
    }
}

<?php
function json_to_query_string(array $data): string {
    $pairs = [];
    foreach ($data as $key => $value) {
        if ($key === 'sign') {
            continue;
        }
        $pairs[] = $key . '=' . $value;
    }
    sort($pairs, SORT_STRING);
    return implode('&', $pairs);
}

function make_sign(array $params, string $token): string {
    return md5(json_to_query_string($params) . '&token=' . $token);
}

const crypto = require("crypto");

function jsonToQueryString(data) {
  return Object.keys(data)
    .filter((key) => key !== "sign")
    .sort()
    .map((key) => `${key}=${data[key]}`)
    .join("&");
}

function makeSign(params, token) {
  return crypto
    .createHash("md5")
    .update(jsonToQueryString(params) + "&token=" + token)
    .digest("hex");
}

import hashlib
import time
from urllib.parse import urlencode

TOKEN = "YOUR_TOKEN"
BASE = "https://q.lakala.ink"

def make_sign(params: dict, token: str) -> str:
    pairs = [f"{k}={v}" for k, v in params.items() if k != "sign"]
    pairs.sort()
    return hashlib.md5(("&".join(pairs) + "&token=" + token).encode()).hexdigest()

params = {
    "group_id": "123",
    "amount": "0.01",
    "order_no": "8675630657",
    "timestamp": str(int(time.time()) + 600),  # 10 分钟后过期
}
params["sign"] = make_sign(params, TOKEN)
pay_url = BASE + "/group/fast/pay?" + urlencode(params)
print(pay_url)  # 做成二维码，用户用微信或支付宝扫码

import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

public class CreatePayUrl {
    static String md5(String s) throws Exception {
        byte[] d = MessageDigest.getInstance("MD5").digest(s.getBytes(StandardCharsets.UTF_8));
        StringBuilder sb = new StringBuilder();
        for (byte b : d) sb.append(String.format("%02x", b));
        return sb.toString();
    }

    static String makeSign(Map<String, String> params, String token) throws Exception {
        List<String> keys = new ArrayList<>(params.keySet());
        Collections.sort(keys);
        StringBuilder raw = new StringBuilder();
        for (String k : keys) {
            if ("sign".equals(k)) continue;
            if (raw.length() > 0) raw.append("&");
            raw.append(k).append("=").append(params.get(k));
        }
        return md5(raw.append("&token=").append(token).toString());
    }

    public static void main(String[] args) throws Exception {
        String token = "YOUR_TOKEN";
        Map<String, String> params = new LinkedHashMap<>();
        params.put("group_id", "123");
        params.put("amount", "0.01");
        params.put("order_no", "8675630657");
        params.put("timestamp", String.valueOf(System.currentTimeMillis() / 1000 + 600));
        params.put("sign", makeSign(params, token));

        StringBuilder url = new StringBuilder("https://q.lakala.ink/group/fast/pay?");
        boolean first = true;
        for (Map.Entry<String, String> e : params.entrySet()) {
            if (!first) url.append("&");
            first = false;
            url.append(URLEncoder.encode(e.getKey(), "UTF-8"))
               .append("=")
               .append(URLEncoder.encode(e.getValue(), "UTF-8"));
        }
        System.out.println(url); // 做成二维码即可收款
    }
}

<?php
$token = 'YOUR_TOKEN';

function make_sign(array $params, string $token): string {
    $pairs = [];
    foreach ($params as $k => $v) {
        if ($k === 'sign') continue;
        $pairs[] = $k . '=' . $v;
    }
    sort($pairs, SORT_STRING);
    return md5(implode('&', $pairs) . '&token=' . $token);
}

$params = [
    'group_id'  => '123',
    'amount'    => '0.01',
    'order_no'  => '8675630657',
    'timestamp' => (string) (time() + 600),
];
$params['sign'] = make_sign($params, $token);
$payUrl = 'https://q.lakala.ink/group/fast/pay?' . http_build_query($params);
echo $payUrl;

const crypto = require("crypto");

const TOKEN = "YOUR_TOKEN";

function makeSign(params, token) {
  const raw =
    Object.keys(params)
      .filter((k) => k !== "sign")
      .sort()
      .map((k) => `${k}=${params[k]}`)
      .join("&") + "&token=" + token;
  return crypto.createHash("md5").update(raw).digest("hex");
}

const params = {
  group_id: "123",
  amount: "0.01",
  order_no: "8675630657",
  timestamp: String(Math.floor(Date.now() / 1000) + 600),
};
params.sign = makeSign(params, TOKEN);

const payUrl =
  "https://q.lakala.ink/group/fast/pay?" + new URLSearchParams(params).toString();
console.log(payUrl);