Springboot对接开发微信支付详细流程
一、微信配置申请
1、微信支付配置申请
详细操作流程参考官方文档:接入前准备-小程序支付 | 微信支付商户平台文档中心
配置完成需要以下信息:
- APPID
- 商户号(mchid)
- 商户API私钥(apiclient_key.pem)
- 商户证书序列号
- 商户APIv3密钥
二、开发环境
1、开发环境
开发语言:java ,编译工具:idea ,框架:springboot ,仓库:maven
2、maven依赖
<dependency>
<groupId>com.github.wechatpay-apiv3</groupId>
<artifactId>wechatpay-java</artifactId>
<version>0.2.10</version>
</dependency>
3、application.yml文件配置
#微信支付配置
wx:
pay:
#应用id(小程序id)
appId: wx6b5xxxxxxxxxxxx
#商户号
merchantId: 1xxxxxxxxx
#商户API私钥
privateKey: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
#商户证书序列号
merchantSerialNumber: 315DDXXXXXXXXXXXXXXXXXXXXXXXXXXX
#商户APIv3密钥
apiV3Key: XXXXXXXXXXXXXXXXXXXXXXXXXX
#支付通知地址
payNotifyUrl: https://xxx.xxxx.xxx.xxx/xx/xxxx/xxxx/openapi/wx/payNotify
#退款通知地址
refundNotifyUrl: https://xxx.xxx.xxx.xxx/xxxx/xxxx/xxxx/openapi/wx/refundNotify
三、代码开发
1、配置类
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
/**
* @author gwh
* @ClassName WxPayConfig
* @description: 微信支付配置类
* @date 2024年11月11日
* @version: 1.0
*/
@Data
@Component
@ConfigurationProperties(prefix = "wx.pay")
public class WxPayConfig {
//APPID
private String appId;
//mchid
private String merchantId;
//商户API私钥
private String privateKey;
//商户证书序列号
private String merchantSerialNumber;
//商户APIv3密钥
private String apiV3Key;
//支付通知地址
private String payNotifyUrl;
//退款通知地址
private String refundNotifyUrl;
}
2、初始化商户配置
import com.wechat.pay.java.core.RSAAutoCertificateConfig;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.annotation.Resource;
/**
* @author gwh
* @ClassName WxPayAutoCertificateConfig
* @description: 微信支付证书自动更新配置
* @date 2024年11月11日
* @version: 1.0
*/
@Configuration
public class WxPayAutoCertificateConfig {
@Resource
private WxPayConfig wxPayConfig;
/**
* 初始化商户配置
* @return
*/
@Bean
public RSAAutoCertificateConfig rsaAutoCertificateConfig() {
RSAAutoCertificateConfig config = new RSAAutoCertificateConfig.Builder()
.merchantId(wxPayConfig.getMerchantId())
.privateKey(wxPayConfig.getPrivateKey())
.merchantSerialNumber(wxPayConfig.getMerchantSerialNumber())
.apiV3Key(wxPayConfig.getApiV3Key())
.build();
return config;
}
}
3、JSAPI微信预下单
3.1、先建个WxPayService服务类
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.baomidou.mybatisplus.mapper.Wrapper;
import com.hvit.user.exception.DataAccessException;
import com.hvit.user.util.DateUtils;
import com.hvit.user.util.R;
import com.hvit.user.yst.entity.WxOrderEntity;
import com.hvit.user.yst.entity.WxPayLogEntity;
import com.hvit.user.yst.request.CreateOrderReq;
import com.hvit.user.yst.request.QueryOrderReq;
import com.hvit.user.yst.request.WxNotifyReq;
import com.hvit.user.yst.service.WKShoppingMallService;
import com.hvit.user.yst.service.data.WxOrderDataService;
import com.hvit.user.yst.service.data.WxPayLogDataService;
import com.wechat.pay.java.core.RSAAutoCertificateConfig;
import com.wechat.pay.java.core.exception.HttpException;
import com.wechat.pay.java.core.exception.MalformedMessageException;
import com.wechat.pay.java.core.exception.ServiceException;
import com.wechat.pay.java.core.notification.NotificationParser;
import com.wechat.pay.java.core.notification.RequestParam;
import com.wechat.pay.java.service.payments.jsapi.*;
import com.wechat.pay.java.service.payments.jsapi.model.*;
import com.wechat.pay.java.service.payments.jsapi.model.Amount;
import com.wechat.pay.java.service.payments.model.Transaction;
import com.wechat.pay.java.service.refund.RefundService;
import com.wechat.pay.java.service.refund.model.*;
import io.swagger.annotations.ApiModelProperty;
import io.swagger.models.auth.In;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import javax.annotation.Resource;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigDecimal;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* @author gwh
* @ClassName WxPayService
* @description: 微信支付
* @date 2024年11月11日
* @version: 1.0
*/
@Slf4j
@Service
public class WxPayService {
@Resource
private WxPayConfig wxPayConfig;
@Autowired
private RSAAutoCertificateConfig rsaAutoCertificateConfig;
@Autowired
private WxOrderDataService wxOrderDataService;
@Autowired
private WxPayLogDataService wxPayLogDataService;
/***
* 预支付订单
* @param req
* @return
*/
public R createOrder(CreateOrderReq req) throws Exception {
if (req == null) {
return R.error("创建订单失败,缺少参数!");
}
//先解密
String orderNo = req.getOutTradeNo();
Integer totalFee = req.getTotal();
//创建初始化订单
//todo,创建订单这边你们自己来(后面我会放出表结构)
//请求微信支付相关配置
JsapiServiceExtension service =
new JsapiServiceExtension.Builder()
.config(rsaAutoCertificateConfig)
.signType("RSA") // 不填默认为RSA
.build();
PrepayWithRequestPaymentResponse response = new PrepayWithRequestPaymentResponse();
try {
PrepayRequest request = new PrepayRequest();
request.setAppid(wxPayConfig.getAppId());
request.setMchid(wxPayConfig.getMerchantId());
request.setDescription(description);
request.setOutTradeNo(orderNo);
request.setNotifyUrl(wxPayConfig.getPayNotifyUrl());
Amount amount = new Amount();
//amount.setTotal(totalFee.multiply(new BigDecimal("100")).intValue());
amount.setTotal(totalFee);
request.setAmount(amount);
Payer payer = new Payer();
payer.setOpenid(req.getWxOpenId());
request.setPayer(payer);
log.info("请求预支付下单,请求参数:{}", JSONObject.toJSONString(request));
// 调用预下单接口
response = service.prepayWithRequestPayment(request);
log.info("订单【{}】发起预支付成功,返回信息:{}", orderNo, response);
} catch (HttpException e) { // 发送HTTP请求失败
log.error("微信下单发送HTTP请求失败,错误信息:{}", e.getHttpRequest());
return R.error("下单失败");
} catch (ServiceException e) { // 服务返回状态小于200或大于等于300,例如500
log.error("微信下单服务状态错误,错误信息:{}", e.getErrorMessage());
return R.error("下单失败");
} catch (MalformedMessageException e) { // 服务返回成功,返回体类型不合法,或者解析返回体失败
log.error("服务返回成功,返回体类型不合法,或者解析返回体失败,错误信息:{}", e.getMessage());
return R.error("下单失败");
}
return R.ok().put("data", response);
}
}
3.1、R实体类
import java.util.HashMap;
import java.util.Map;
/**
*
* @author gwh
* @date 2024-11-11
*/
public class R extends HashMap<String, Object> {
private static final long serialVersionUID = 1L;
public R() {
put("code", 0);
}
public R(Integer code) {
put("code", code);
put("data", new HashMap<String, Object>());
}
public R(Integer code, String msg) {
put("code", code);
原文地址:https://blog.csdn.net/gaowenhui2008/article/details/143683335
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