SpringBoot集成IJPay实现微信v3支付的示例代码
作者:保加利亚的风
本文主要介绍了SpringBoot集成IJPay实现微信v3支付的示例代码,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧
前言
这篇文章主要实现一下通过IJPay
来实现微信v3支付案例,本篇文章使用的是JSAPI
即小程序支付
IJPay码云仓库:https://gitee.com/javen205/IJPay/tree/dev
IJPay官方文档:https://javen205.gitee.io/ijpay/
准备工作
导入依赖
<dependency> <groupId>com.github.javen205</groupId> <artifactId>IJPay-WxPay</artifactId> <version>2.9.6</version> </dependency>
- appId 由微信生成的应用ID,全局唯一。
- mchId 直连商户的商户号,由微信支付生成并下发。
- apiV3Key v3密钥
- mchSerialNo 商户证书序列号
还需要三个证书文件
- 通过微信官方指引下载证书并解压缩后得到的文件。
apiclient_cert.pem
称为商户证书,apiclient_key.pem
成为商户证书密钥 - 通过IJPay的接口获取,称之为微信平台证书。(一般没有这个文件,所以暂时先不管,一会获取的时候会讲这个)
在这里我们给这三个文件起个别名,以便下方代码更容易区分。
- apiclient_cert.pem:privateCertPath
- apiclient_key.pem:privateKeyPath
- wx_platform_cert.pem:platformCertPath
开始
1 首先将上面所有的参数配置到application.yml
文件中,或者配置到nacos上。
- wxJsapiUrl:是获取微信预支付参数的url路径
- 最下面的三个是文件的绝对路径
2 读取配置文件的配置项,新建WxPayConfig
@Data @Component @ConfigurationProperties(prefix = "wx.pay") public class WxPayConfig { /** * appId */ private String appId; /** * 商户号 */ private String mchId; /** * 商户证书序列号 */ private String mchSerialNo; /** * apiv3密钥 */ private String apiV3Key; /** * 支付回调地址 */ private String notifyUrl; /** * 微信支付请求url */ private String wxJsapiUrl; /** * 私钥路径 */ private String privateKeyPath; /** * 商户证书路径 */ private String privateCertPath; /** * 微信平台证书路径 */ private String platformCertPath; }
3 首先获取到微信平台证书
import cn.hutool.json.JSONArray; import cn.hutool.json.JSONObject; import cn.hutool.json.JSONUtil; import cn.mjfz.fc.weixin.WxPayConfig; import com.ijpay.core.IJPayHttpResponse; import com.ijpay.core.enums.RequestMethodEnum; import com.ijpay.core.kit.AesUtil; import com.ijpay.core.kit.PayKit; import com.ijpay.core.kit.WxPayKit; import com.ijpay.wxpay.WxPayApi; import com.ijpay.wxpay.enums.WxDomainEnum; import com.ijpay.wxpay.enums.v3.OtherApiEnum; import lombok.extern.slf4j.Slf4j; import org.junit.jupiter.api.Test; import javax.annotation.Resource; import java.io.ByteArrayInputStream; import java.io.FileWriter; import java.nio.charset.StandardCharsets; import java.security.cert.X509Certificate; @Resource private WxPayConfig wxPayConfig; public void v3Get() { // 获取平台证书列表 try { IJPayHttpResponse response = WxPayApi.v3( RequestMethodEnum.GET, WxDomainEnum.CHINA.toString(), OtherApiEnum.GET_CERTIFICATES.toString(), wxPayConfig.getMchId(), wxPayConfig.getMchSerialNo(), null, wxPayConfig.getPrivateKeyPath(), "" ); String timestamp = response.getHeader("Wechatpay-Timestamp"); String nonceStr = response.getHeader("Wechatpay-Nonce"); String serialNumber = response.getHeader("Wechatpay-Serial"); String signature = response.getHeader("Wechatpay-Signature"); String body = response.getBody(); int status = response.getStatus(); log.info("serialNumber: {}", serialNumber); log.info("status: {}", status); log.info("body: {}", body); if (status == 200) { JSONObject jsonObject = JSONUtil.parseObj(body); JSONArray dataArray = jsonObject.getJSONArray("data"); // 默认认为只有一个平台证书 JSONObject encryptObject = dataArray.getJSONObject(0); JSONObject encryptCertificate = encryptObject.getJSONObject("encrypt_certificate"); String associatedData = encryptCertificate.getStr("associated_data"); String cipherText = encryptCertificate.getStr("ciphertext"); String nonce = encryptCertificate.getStr("nonce"); String serialNo = encryptObject.getStr("serial_no"); final String platSerialNo = savePlatformCert(associatedData, nonce, cipherText, wxPayConfig.getPlatformCertPath()); log.info("平台证书序列号: {} serialNo: {}", platSerialNo, serialNo); } // 根据证书序列号查询对应的证书来验证签名结果 boolean verifySignature = WxPayKit.verifySignature(response, wxPayConfig.getPlatformCertPath()); System.out.println("verifySignature:" + verifySignature); } catch (Exception e) { e.printStackTrace(); } } private String savePlatformCert(String associatedData, String nonce, String cipherText, String certPath) { try { AesUtil aesUtil = new AesUtil(apiV3key.getBytes(StandardCharsets.UTF_8)); // 平台证书密文解密 // encrypt_certificate 中的 associated_data nonce ciphertext String publicKey = aesUtil.decryptToString( associatedData.getBytes(StandardCharsets.UTF_8), nonce.getBytes(StandardCharsets.UTF_8), cipherText ); // 保存证书 FileWriter writer = new FileWriter(certPath); writer.write(publicKey); writer.close(); // 获取平台证书序列号 X509Certificate certificate = PayKit.getCertificate(new ByteArrayInputStream(publicKey.getBytes())); return certificate.getSerialNumber().toString(16).toUpperCase(); } catch (Exception e) { e.printStackTrace(); return e.getMessage(); } }
4 支付和回调
//支付 @RequestMapping("/jsApiPay") @ResponseBody public String jsApiPay(String openId) { try { String timeExpire = DateTimeZoneUtil.dateToTimeZone(System.currentTimeMillis() + 1000 * 60 * 3); UnifiedOrderModel unifiedOrderModel = new UnifiedOrderModel() .setAppid(wxPayConfig.getAppId()) .setMchid(wxPayConfig.getMchId()) .setDescription("IJPay 让支付触手可及") .setOut_trade_no(PayKit.generateStr()) .setTime_expire(timeExpire) .setAttach("微信系开发脚手架 https://gitee.com/javen205/TNWX") .setNotify_url(wxPayConfig.getNotifyUrl()) .setAmount(new Amount().setTotal(1)) .setPayer(new Payer().setOpenid(openId)); log.info("统一下单参数 {}", JSONUtil.toJsonStr(unifiedOrderModel)); IJPayHttpResponse response = WxPayApi.v3( RequestMethodEnum.POST, WxDomainEnum.CHINA.toString(), BasePayApiEnum.JS_API_PAY.toString(), wxPayConfig.getMchId(), wxPayConfig.getMchSerialNo(), null, wxPayConfig.getPrivateKeyPath(), JSONUtil.toJsonStr(unifiedOrderModel) ); log.info("统一下单响应 {}", response); // 根据证书序列号查询对应的证书来验证签名结果 boolean verifySignature = WxPayKit.verifySignature(response, wxPayConfig.getPlatformCertPath()); log.info("verifySignature: {}", verifySignature); if (response.getStatus() == 200 && verifySignature) { String body = response.getBody(); JSONObject jsonObject = JSONUtil.parseObj(body); String prepayId = jsonObject.getStr("prepay_id"); Map<String, String> map = WxPayKit.jsApiCreateSign(wxPayConfig.getAppId(), prepayId, wxPayConfig.getPrivateKeyPath()); log.info("唤起支付参数:{}", map); return JSONUtil.toJsonStr(map); } return JSONUtil.toJsonStr(response); } catch (Exception e) { e.printStackTrace(); return e.getMessage(); } } @RequestMapping(value = "/payNotify", method = {org.springframework.web.bind.annotation.RequestMethod.POST, org.springframework.web.bind.annotation.RequestMethod.GET}) @ResponseBody public void payNotify(HttpServletRequest request, HttpServletResponse response) { Map<String, String> map = new HashMap<>(12); try { String timestamp = request.getHeader("Wechatpay-Timestamp"); String nonce = request.getHeader("Wechatpay-Nonce"); String serialNo = request.getHeader("Wechatpay-Serial"); String signature = request.getHeader("Wechatpay-Signature"); log.info("timestamp:{} nonce:{} serialNo:{} signature:{}", timestamp, nonce, serialNo, signature); String result = HttpKit.readData(request); log.info("支付通知密文 {}", result); // 需要通过证书序列号查找对应的证书,verifyNotify 中有验证证书的序列号 String plainText = WxPayKit.verifyNotify(serialNo, result, signature, nonce, timestamp, wxPayConfig.getApiV3Key(), wxPayConfig.getPlatformCertPath()); log.info("支付通知明文 {}", plainText); if (StrUtil.isNotEmpty(plainText)) { response.setStatus(200); map.put("code", "SUCCESS"); map.put("message", "SUCCESS"); } else { response.setStatus(500); map.put("code", "ERROR"); map.put("message", "签名错误"); } response.setHeader("Content-type", ContentType.JSON.toString()); response.getOutputStream().write(JSONUtil.toJsonStr(map).getBytes(StandardCharsets.UTF_8)); response.flushBuffer(); } catch (Exception e) { e.printStackTrace(); } }
总结
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