package org.springblade.modules.pay.service.impl;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import com.github.wxpay.sdk.WXPayUtil;
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import com.google.gson.Gson;
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import com.wechat.pay.contrib.apache.httpclient.util.AesUtil;
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import com.wechat.pay.contrib.apache.httpclient.util.PemUtil;
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import org.apache.http.client.methods.CloseableHttpResponse;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.entity.StringEntity;
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import org.apache.http.util.EntityUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springblade.common.enums.OrderStatus;
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import org.springblade.common.enums.wxpay.WxApiType;
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import org.springblade.common.enums.wxpay.WxNotifyType;
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import org.springblade.modules.pay.controller.WxPayController;
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import org.springblade.modules.pay.entity.WxPayInfo;
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import org.springblade.modules.pay.mapper.WxPayMapper;
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import org.springblade.modules.pay.service.IWxPayService;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.stereotype.Service;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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import java.security.*;
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import java.util.*;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.locks.ReentrantLock;
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@Service
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public class WxPayServiceImpl extends ServiceImpl<WxPayMapper,WxPayInfo> implements IWxPayService {
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private final String MINI_PROGRAM_APP_ID = "wx41aa8a5d2e565a05";
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private static final Logger logger = LoggerFactory.getLogger(WxPayServiceImpl.class);
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private final ReentrantLock lock = new ReentrantLock();
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@Override
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public Object getOpenId(String code) {
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return null;
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}
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@Override
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public Map<String, String> jsapiPay(Long productId) throws IOException {
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String prepayId = "";
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//生成订单
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// OrderInfo orderInfo = orderInfoService.createOrderByProductId(productId);
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logger.info("调用统一下单API");
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// //调用统一下单API
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// HttpPost httpPost = new HttpPost(wxPayConfig.getDomain().concat(WxApiType.JSAPI_PAY.getType()));
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//
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// // 请求body参数
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//
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// Gson gson = new Gson();
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// Map paramsMap = new HashMap();
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// paramsMap.put("appid", wxPayConfig.getAppid());
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// paramsMap.put("mchid", wxPayConfig.getMchId());
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// paramsMap.put("description", orderInfo.getTitle());
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// paramsMap.put("out_trade_no", orderInfo.getOrderNo());
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// paramsMap.put("notify_url", wxPayConfig.getNotifyDomain().concat(WxNotifyType.NATIVE_NOTIFY.getType()));
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//
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// Map amountMap = new HashMap();
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// amountMap.put("total", orderInfo.getTotalFee());
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// amountMap.put("currency", "CNY");
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//
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// paramsMap.put("amount", amountMap);
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//
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// Map payerMap = new HashMap();
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// payerMap.put("openid", "oSX3G6OUuGaKJbWzSHUpPbzgtDXo");
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//
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// paramsMap.put("payer", payerMap);
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//
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// //将参数转换成json字符串
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// String jsonParams = gson.toJson(paramsMap);
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// logger.info("请求参数 ===> {}" + jsonParams);
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//
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// StringEntity entity = new StringEntity(jsonParams, "utf-8");
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// entity.setContentType("application/json");
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// httpPost.setEntity(entity);
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// httpPost.setHeader("Accept", "application/json");
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//
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// //完成签名并执行请求
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// CloseableHttpResponse response = wxPayClient.execute(httpPost);
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//
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// try {
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// String bodyAsString = EntityUtils.toString(response.getEntity());//响应体
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// int statusCode = response.getStatusLine().getStatusCode();//响应状态码
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// if (statusCode == 200) { //处理成功
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// logger.info("成功, 返回结果 = " + bodyAsString);
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// } else if (statusCode == 204) { //处理成功，无返回Body
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// logger.info("成功");
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// } else {
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// logger.info("jszpi下单失败,响应码 = " + statusCode + ",返回结果 = " + bodyAsString);
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// throw new IOException("request failed");
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// }
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// //响应结果
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// Map<String, String> resultMap = gson.fromJson(bodyAsString, HashMap.class);
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// //预支付交易会话标识
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// prepayId = resultMap.get("prepay_id");
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//
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// //返回预支付交易会话标识
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// // 组装前端预下单参数
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// /** 返回给前端所需要的数据 */
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// SortedMap<String, String> payMap = new TreeMap<>();
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// String nonceStr = WXPayUtil.generateNonceStr();
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// String timestamp = String.valueOf(System.currentTimeMillis() / 1000);
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// payMap.put("appId", wxPayConfig.getAppid());
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// payMap.put("timeStamp", timestamp);
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// payMap.put("nonceStr", nonceStr);
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// payMap.put("signType", "RSA");
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// payMap.put("package", "prepay_id=" + prepayId);
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// String paySign = getSign(wxPayConfig.getAppid(), prepayId, timestamp, nonceStr);
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// payMap.put("paySign", paySign);
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// logger.info("返回参数 ===> {}" + gson.toJson(payMap));
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// return payMap;
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// } finally {
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// response.close();
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// }
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return null;
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}
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@Override
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public void processOrder(Map<String, Object> bodyMap) throws GeneralSecurityException {
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logger.info("处理订单");
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//解密报文
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String plainText = decryptFromResource(bodyMap);
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//将明文转换成map
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Gson gson = new Gson();
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HashMap plainTextMap = gson.fromJson(plainText, HashMap.class);
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String orderNo = (String) plainTextMap.get("out_trade_no");
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/*在对业务数据进行状态检查和处理之前，
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要采用数据锁进行并发控制，
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以避免函数重入造成的数据混乱*/
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//尝试获取锁：
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// 成功获取则立即返回true，获取失败则立即返回false。不必一直等待锁的释放
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// if (lock.tryLock()) {
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// try {
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// //处理重复的通知
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// //接口调用的幂等性：无论接口被调用多少次，产生的结果是一致的。
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// String orderStatus = orderInfoService.getOrderStatus(orderNo);
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// if (!OrderStatus.NOTPAY.getType().equals(orderStatus)) {
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// return;
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// }
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//
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// //模拟通知并发
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// try {
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// TimeUnit.SECONDS.sleep(5);
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// } catch (InterruptedException e) {
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// e.printStackTrace();
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// }
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//
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// //更新订单状态
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// orderInfoService.updateStatusByOrderNo(orderNo, OrderStatus.SUCCESS);
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//
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// //记录支付日志
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// paymentInfoService.createPaymentInfo(plainText);
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// } finally {
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// //要主动释放锁
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// lock.unlock();
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// }
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// }
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}
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/**
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* 通过prepay_id获取签名
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*
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* @param appid
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* @param prepay_id
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* @param timestamp
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* @param nonceStr
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* @return
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* @throws IOException
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* @throws SignatureException
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* @throws NoSuchAlgorithmException
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* @throws InvalidKeyException
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*/
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String getSign(String appid, String prepay_id, String timestamp, String nonceStr) throws IOException, SignatureException, NoSuchAlgorithmException, InvalidKeyException {
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//从下往上依次生成
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String message = getSignStr(appid, timestamp, nonceStr, "prepay_id=" + prepay_id);
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//签名
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String signature = sign(message.getBytes("utf-8"));
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return signature;
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}
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String sign(byte[] message) throws NoSuchAlgorithmException, SignatureException, IOException, InvalidKeyException {
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//签名方式
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Signature sign = Signature.getInstance("SHA256withRSA");
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//私钥，通过MyPrivateKey来获取，这是个静态类可以接调用方法 ，需要的是_key.pem文件的绝对路径配上文件名
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// sign.initSign(getPrivateKey(wxPayConfig.getPrivateKeyPath()));
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sign.update(message);
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return Base64.getEncoder().encodeToString(sign.sign());
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}
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/**
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* 按照前端签名文档规范进行排序
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*
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* @param appId
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* @param timeStamp
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* @param nonceStr
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* @param packageValue
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* @return
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*/
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private String getSignStr(String appId, String timeStamp, String nonceStr, String packageValue) {
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return String.format("%s\n%s\n%s\n%s\n", appId, timeStamp, nonceStr, packageValue);
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}
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private PrivateKey getPrivateKey(String filename) {
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try {
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FileInputStream fileInputStream = new FileInputStream(filename);
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logger.info("文件内容：" + fileInputStream);
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return PemUtil.loadPrivateKey(fileInputStream);
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} catch (Exception e) {
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logger.info("私钥文件不存在", e);
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throw new RuntimeException("私钥文件不存在", e);
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}
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}
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/**
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* 对称解密
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*
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* @param bodyMap
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* @return
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*/
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private String decryptFromResource(Map<String, Object> bodyMap) throws GeneralSecurityException {
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logger.info("密文解密");
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//通知数据
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Map<String, String> resourceMap = (Map) bodyMap.get("resource");
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//数据密文
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String ciphertext = resourceMap.get("ciphertext");
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//随机串
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String nonce = resourceMap.get("nonce");
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//附加数据
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String associatedData = resourceMap.get("associated_data");
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logger.info("密文 ===> {}", ciphertext);
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// AesUtil aesUtil = new AesUtil(wxPayConfig.getApiV3Key().getBytes(StandardCharsets.UTF_8));
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// String plainText = aesUtil.decryptToString(associatedData.getBytes(StandardCharsets.UTF_8),
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// nonce.getBytes(StandardCharsets.UTF_8),
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// ciphertext);
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// logger.info("明文 ===> {}", plainText);
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// return plainText;
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return null;
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}
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}
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