package cc.mrbird.febs.pay.util;
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import cn.hutool.json.JSONObject;
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import cn.hutool.json.JSONUtil;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.http.HttpEntity;
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import org.apache.http.client.methods.CloseableHttpResponse;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.impl.client.CloseableHttpClient;
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import org.apache.http.impl.client.HttpClients;
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import org.apache.http.util.EntityUtils;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import java.security.MessageDigest;
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import java.util.LinkedHashMap;
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import java.util.Map;
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@Slf4j
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@Service(value="FiuuUtil")
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public class FiuuUtil {
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private static final String API_URL = "https://api.fiuu.com/RMS/API/refundAPI/index.php";
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private static final String MERCHANT_ID = "e2umart01";
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private static final String SECRET_KEY = "59c709fc18978a6a83b87f05d37cecbf";
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@Transactional
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public boolean comRefund(String outTradeNo, String outRefundNo,String amount){
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// 退款请求参数
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Map<String, String> params = new LinkedHashMap<>();
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params.put("RefundType", "P"); // P: Partial Refund, F: Full Refund
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params.put("MerchantID", MERCHANT_ID);
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params.put("RefID", outRefundNo); // 商户唯一退款ID
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params.put("TxnID", outTradeNo); // Fiuu原始交易ID
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params.put("Amount", amount); // 退款金额
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// 生成签名
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String signature = null;
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try {
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signature = generateSignature(params);
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} catch (Exception e) {
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e.printStackTrace();
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}
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params.put("Signature", signature);
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// 发送GET请求
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String response = null;
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try {
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response = sendRefundRequest(params);
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} catch (Exception e) {
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e.printStackTrace();
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}
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System.out.println("退款响应: " + response);
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JSONObject jsonObject = JSONUtil.parseObj(response);
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String status = jsonObject.getStr("status");
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if ("00".equals(status)) {
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return true;
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}else{
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return false;
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}
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}
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public static void main(String[] args) {
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try {
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// 退款请求参数
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Map<String, String> params = new LinkedHashMap<>();
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params.put("RefundType", "P"); // P: Partial Refund, F: Full Refund
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params.put("MerchantID", MERCHANT_ID);
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params.put("RefID", "2025020614313541756_RITEM426"); // 商户唯一退款ID
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params.put("TxnID", "2685173864"); // Fiuu原始交易ID
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params.put("Amount", "1.00"); // 退款金额
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// 生成签名
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String signature = generateSignature(params);
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params.put("Signature", signature);
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// 发送GET请求
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String response = sendRefundRequest(params);
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System.out.println("退款响应: " + response);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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/**
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* 生成MD5签名
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*/
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private static String generateSignature(Map<String, String> params) throws Exception {
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// 按顺序拼接参数：RefundType + MerchantID + RefID + TxnID + Amount + SecretKey
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String rawData = params.get("RefundType") +
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params.get("MerchantID") +
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params.get("RefID") +
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params.get("TxnID") +
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params.get("Amount") +
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SECRET_KEY;
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MessageDigest md = MessageDigest.getInstance("MD5");
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byte[] hashBytes = md.digest(rawData.getBytes("UTF-8"));
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// 转换为十六进制字符串
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StringBuilder hexString = new StringBuilder();
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for (byte b : hashBytes) {
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String hex = Integer.toHexString(0xff & b);
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if (hex.length() == 1) hexString.append('0');
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hexString.append(hex);
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}
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return hexString.toString();
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}
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/**
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* 发送退款请求（GET方式）
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*/
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private static String sendRefundRequest(Map<String, String> params) throws Exception {
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StringBuilder urlBuilder = new StringBuilder(API_URL);
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urlBuilder.append("?");
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// 拼接查询参数
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for (Map.Entry<String, String> entry : params.entrySet()) {
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urlBuilder.append(entry.getKey())
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.append("=")
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.append(entry.getValue())
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.append("&");
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}
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String url = urlBuilder.toString().replaceAll("&$", ""); // 去除末尾的&
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// 使用HttpClient发送请求
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try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
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HttpGet httpGet = new HttpGet(url);
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try (CloseableHttpResponse response = httpClient.execute(httpGet)) {
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HttpEntity entity = response.getEntity();
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return EntityUtils.toString(entity);
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}
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}
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}
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}
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