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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>

还需要三个证书文件

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。

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。

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

到此这篇关于SpringBoot集成IJPay实现微信v3支付的示例代码的文章就介绍到这了,更多相关SpringBoot IJPay微信v3支付内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!

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