目录

配置文件

MyBatisPlusConfig

 WxPayConfig

Swagger2config

商品订单管理 

OrderInfoController

 OrderInfoService

OrderInfoServiceImpl

商品管理 

controller层

Service层

 Impl层 

网站微信支付API

controller层

Service层

Impl层 

 退款 功能编写

工具类 

HttpClientUtils

HttpUtils

 OrderNoUtils

 R

 YMl配置文件

 wxpay.properties

总结

配置文件

MyBatisPlusConfig

package weixinpay.pay.config;


import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@MapperScan("weixinpay.pay.mapper")
@EnableTransactionManagement//启用事务管理
public class MyBatisPlusConfig {
}

 WxPayConfig

package weixinpay.pay.config;

import com.wechat.pay.contrib.apache.httpclient.WechatPayHttpClientBuilder;
import com.wechat.pay.contrib.apache.httpclient.auth.PrivateKeySigner;
import com.wechat.pay.contrib.apache.httpclient.auth.ScheduledUpdateCertificatesVerifier;
import com.wechat.pay.contrib.apache.httpclient.auth.WechatPay2Credentials;
import com.wechat.pay.contrib.apache.httpclient.auth.WechatPay2Validator;
import com.wechat.pay.contrib.apache.httpclient.util.PemUtil;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.impl.client.CloseableHttpClient;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.nio.charset.StandardCharsets;
import java.security.PrivateKey;

import static jdk.nashorn.internal.runtime.regexp.joni.Config.log;


@Slf4j
@Configuration
@PropertySource("classpath:wxpay.properties") //读取配置文件
@ConfigurationProperties(prefix = "wxpay") //读取wxpay节点
@Data //使用set方法将wxpay节点中的值填充到当前类的属性中
public class WxPayConfig {

    // 商户号
    private String mchId;

    // 商户API证书序列号
    private String mchSerialNo;

    // 商户私钥文件
    private String privateKeyPath;

    // APIv3密钥
    private String apiV3Key;

    // APPID
    private String appid;

    // 微信服务器地址
    private String domain;

    // 接收结果通知地址
    private String notifyDomain;

    

    private PrivateKey getPrivateKey(String filename) {

        try {
            return PemUtil.loadPrivateKey(new FileInputStream(filename));
        } catch (FileNotFoundException e) {
            throw new RuntimeException("私钥文件不存在", e);
        }
    }

    
    @Bean
    public ScheduledUpdateCertificatesVerifier getVerifier() {

        log.info("获取签名验证器");

        //获取商户私钥
        PrivateKey privateKey = getPrivateKey(privateKeyPath);

        //私钥签名对象
        PrivateKeySigner privateKeySigner = new PrivateKeySigner(mchSerialNo, privateKey);

        //身份认证对象
        WechatPay2Credentials wechatPay2Credentials = new WechatPay2Credentials(mchId, privateKeySigner);

        // 使用定时更新的签名验证器，不需要传入证书
        ScheduledUpdateCertificatesVerifier verifier = new ScheduledUpdateCertificatesVerifier(
                wechatPay2Credentials,
                apiV3Key.getBytes(StandardCharsets.UTF_8));

        return verifier;
    }


    
    @Bean(name = "wxPayClient")
    public CloseableHttpClient getWxPayClient(ScheduledUpdateCertificatesVerifier verifier) {

        log.info("获取httpClient");

        //获取商户私钥
        PrivateKey privateKey = getPrivateKey(privateKeyPath);

        WechatPayHttpClientBuilder builder = WechatPayHttpClientBuilder.create()
                .withMerchant(mchId, mchSerialNo, privateKey)
                .withValidator(new WechatPay2Validator(verifier));
        // ... 接下来，你仍然可以通过builder设置各种参数，来配置你的HttpClient

        // 通过WechatPayHttpClientBuilder构造的HttpClient，会自动的处理签名和验签，并进行证书自动更新
        CloseableHttpClient httpClient = builder.build();

        return httpClient;
    }
}

Swagger2config

由于我用的PostMan进行调试的可能Swagger2后面写的不全

package weixinpay.pay.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import springfox.documentation.builders.ApiInfoBuilder;

import springfox.documentation.spi.DocumentationType;

import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;



@Configuration
@EnableSwagger2
public class Swagger2config {


    @Bean
    public Docket docket(){
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(new ApiInfoBuilder().title("微信支付案例").build());
    }
}

商品订单管理 

OrderInfoController

package weixinpay.pay.controller;

import org.springframework.web.bind.annotation.*;
import weixinpay.pay.entity.OrderInfo;
import weixinpay.pay.enums.OrderStatus;
import weixinpay.pay.service.OrderInfoService;
import weixinpay.pay.vo.R;

import javax.annotation.Resource;
import java.util.List;

@CrossOrigin
@RestController
@RequestMapping
public class OrderInfoController {

    @Resource
    private OrderInfoService orderInfoService;

    @GetMapping("/list")
    public R list() {
        List list = orderInfoService.listOrderByCreateTimeDesc();
        return R.ok().data("list", list);
    }

    
    @GetMapping("query-order-status/{orderNo}")
    public R queryOrderStatus(@PathVariable String orderNo) {
        String orderStatus = orderInfoService.getOrderStatus(orderNo);
        if (OrderStatus.SUCCESS.getType().equals(orderStatus)) {
            return R.ok().setMessage("支付成功");
        }
        return R.ok().setCode(101).setMessage("支付中...");
    }


}

 OrderInfoService

package weixinpay.pay.service;


import com.baomidou.mybatisplus.extension.service.IService;
import weixinpay.pay.entity.OrderInfo;
import weixinpay.pay.enums.OrderStatus;

import java.util.List;

public interface OrderInfoService extends IService {

    OrderInfo createOrderByProductId(Long productId);

    void saveCodeUrl(String orderNo ,String codeUrl);

    List listOrderByCreateTimeDesc();

    void updateStatueByOrderNo(String orderNo, OrderStatus orderStatus);

    String getOrderStatus(String orderNo);


    List getNoPayOrderByDuration(int minutes);

    void updateStatusByOrderNo(String orderNo, OrderStatus refundProcessing);

    OrderInfo getOrderByOrderNo(String orderNo);
}

OrderInfoServiceImpl

package weixinpay.pay.service.impl;


import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import weixinpay.pay.entity.OrderInfo;
import weixinpay.pay.entity.Product;
import weixinpay.pay.enums.OrderStatus;
import weixinpay.pay.mapper.OrderInfoMapper;
import weixinpay.pay.mapper.ProductMapper;
import weixinpay.pay.service.OrderInfoService;
import weixinpay.pay.util.OrderNoUtils;

import javax.annotation.Resource;
import java.time.Duration;
import java.time.Instant;
import java.util.List;
@Slf4j
@Service
public class OrderInfoServiceImpl extends ServiceImpl implements OrderInfoService {

    @Resource
    private ProductMapper productMapper;
//    @Resource
//    private OrderInfoMapper orderInfoMapper;

    @Override
    public OrderInfo createOrderByProductId(Long productId) {

        //查找已存在但未支付的订单
        OrderInfo orderInfo = this.getNoPayOrderByProductId(productId);
        if (orderInfo !=null ){
            return  orderInfo;
        }

        //获取商品信息
        Product product = productMapper.selectById(productId);
    //生成订单
        orderInfo = new OrderInfo();
        orderInfo.setTitle(product.getTitle());
        orderInfo.setOrderNo(OrderNoUtils.getOrderNo());//订单号
        orderInfo.setProductId(productId);
        orderInfo.setTotalFee(product.getPrice());//分
        orderInfo.setOrderStatus(OrderStatus.NOTPAY.getType());
        baseMapper.insert(orderInfo);
        return orderInfo;

    }

    

    @Override
    public void saveCodeUrl(String orderNo, String codeUrl) {

        QueryWrapper queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("order_no",orderNo);

       OrderInfo orderInfo = new OrderInfo();

        orderInfo.setCodeUrl(codeUrl);

        baseMapper.update(orderInfo,queryWrapper);
    }

    @Override
    public List listOrderByCreateTimeDesc() {
         QueryWrapper queryWrapper =new QueryWrapper().orderByDesc("create_time");
         return baseMapper.selectList(queryWrapper);
    }

    
    @Override
    public void updateStatueByOrderNo(String orderNo, OrderStatus orderStatus) {
        log.info("更新订单状态===>",orderStatus.getType());

        QueryWrapper queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("order_no",orderNo);

        OrderInfo orderInfo = new OrderInfo();
        orderInfo.setOrderStatus(orderStatus.getType());
        baseMapper.update(orderInfo,queryWrapper);

    }

    @Override
    public String getOrderStatus(String orderNo) {
        QueryWrapper queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("order_no",orderNo);
        OrderInfo orderInfo = baseMapper.selectOne(queryWrapper);
        if (orderInfo == null){
            return null;
        }
        return orderInfo.getOrderStatus();
    }

    
    @Override
    public List getNoPayOrderByDuration(int minutes) {

        Instant instant = Instant.now().minus(Duration.ofMinutes(minutes));

        QueryWrapper queryWrapper = new QueryWrapper<>();
       queryWrapper.eq("order_status",OrderStatus.NOTPAY.getType());
       queryWrapper.le("create_time",instant);
        List orderInfoList = baseMapper.selectList(queryWrapper);

        return orderInfoList;
    }

    @Override
    public void updateStatusByOrderNo(String orderNo, OrderStatus refundProcessing) {

    }

    
    @Override
    public OrderInfo getOrderByOrderNo(String orderNo) {

        QueryWrapper queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("order_no", orderNo);
        OrderInfo orderInfo = baseMapper.selectOne(queryWrapper);

        return orderInfo;
    }

    
    private OrderInfo getNoPayOrderByProductId(Long productId) {

        QueryWrapper queryWrapper = new QueryWrapper<>();
    //productId是否等于product_id
        queryWrapper.eq("product_id",productId);
        queryWrapper.eq("order_status",OrderStatus.NOTPAY.getType());
    //        queryWrapper.eq("user_id",userId);
        OrderInfo orderInfo = baseMapper.selectOne(queryWrapper);
        return orderInfo;
    }
}

商品管理 

controller层

package weixinpay.pay.controller;


import io.swagger.annotations.Api;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;
import weixinpay.pay.entity.Product;
import weixinpay.pay.service.ProductService;
import weixinpay.pay.vo.R;

import javax.annotation.Resource;
import java.util.Date;
import java.util.List;
@CrossOrigin
@Api(tags = "商品管理")
@RestController
@RequestMapping("/api/product")
public class ProductController {


    @Resource
    private ProductService productService;

    @GetMapping("/test")
    public R test(){

        return R.ok().data("message","hello").data("now",new Date());
    }
    @GetMapping("/list")
    public R list(){
       List list =productService.list();
       return R.ok().data("productList",list);

    }
}

Service层

由于我们使用的MybatisPuls 它给我们预定了一下增删改查等方法so

package weixinpay.pay.service;


import com.baomidou.mybatisplus.extension.service.IService;
import weixinpay.pay.entity.Product;

public interface ProductService extends IService {

}

 Impl层 

package weixinpay.pay.service.impl;


import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
import weixinpay.pay.entity.Product;
import weixinpay.pay.mapper.ProductMapper;
import weixinpay.pay.service.ProductService;

@Service
public class ProductServiceImpl extends ServiceImpl implements ProductService {

}

网站微信支付API controller层

package weixinpay.pay.controller;


import com.google.gson.Gson;
import com.wechat.pay.contrib.apache.httpclient.auth.Verifier;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;
import weixinpay.pay.service.WxPayService;
import weixinpay.pay.util.HttpUtils;
import weixinpay.pay.util.WechatPay2ValidatorForRequest;
import weixinpay.pay.vo.R;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.HashMap;
import java.util.Map;

@CrossOrigin//跨域
@RestController
@RequestMapping("/api/wx-pay")
@Api(tags = "网站微信支付API")
@Slf4j
public class WxPayController {

    @Resource
    private WxPayService wxPayService;
    @Resource
    private Verifier verifier;

    
    @ApiOperation("调用统一下单API，生成支付二维码")
    @PostMapping("/native/{productId}")
    public R nativePay(@PathVariable Long productId) throws Exception {

        log.info("发起支付请求 v3");

        //返回支付二维码连接和订单号
        Map map = wxPayService.nativePayV2(productId);

        return R.ok().setData(map);
    }

    @PostMapping("/native/notify")
    public String nativeNotify(HttpServletResponse response, HttpServletRequest request) throws IOException, GeneralSecurityException {
        Gson gson = new Gson();
        //应答对象
        HashMap map = new HashMap<>();


        //处理通知参数
        String body = HttpUtils.readData(request);

        Map bodyMap = gson.fromJson(body, HashMap.class);
        String requestId = (String) bodyMap.get("id");
        log.info("支付通知的id ===> {}", requestId);
        //log.info("支付通知的完整数据 ===> {}", body);
        //签名验证
        WechatPay2ValidatorForRequest wechatPay2ValidatorForRequest = new WechatPay2ValidatorForRequest(verifier, requestId, body);

        if (!wechatPay2ValidatorForRequest.validate(request)) {

            log.error("通知验签失败");
            //失败应答
            response.setStatus(500);
            map.put("code", "ERROR");
            map.put("message", "通知验签失败");
            return gson.toJson(map);
        }

        //处理订单
        wxPayService.processOrder(bodyMap);
        //成功应答
        response.setStatus(200);
        map.put("code", "SUCCESS");
        map.put("massage", "成功");
        return gson.toJson(map);
    }

    
    @GetMapping("/cancel/{orderNo}")
    public R cancelOrderNo(@PathVariable String orderNo) throws IOException {
        log.info("订单取消");
        wxPayService.cancelOrderNO(orderNo);
        return R.ok().setMessage("订单取消");
    }

    
    @GetMapping
    public R queryOrder(@PathVariable String orderNo) throws Exception {
        log.info("查询订单");
        String result=wxPayService.queryOrder(orderNo);

        return R.ok().setMessage("查询成功").data("result", result);
    }

    public  R refund(@PathVariable String orderNo,@PathVariable String reason) throws IOException {
    log.info("申请退款");
    wxPayService.refund(orderNo,reason);
    return  R.ok();
    }

}

Service层

package weixinpay.pay.service;

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Map;

public interface WxPayService {
    Map nativePayV2(Long productId) throws Exception;

    void processOrder(Map bodyMap) throws GeneralSecurityException;

    void cancelOrderNO(String orderNo) throws IOException;

    String queryOrder(String orderNo) throws Exception;

    void checkOrderStatus(String orderNo) throws Exception;

    void refund(String orderNo, String reason) throws IOException;

    void checkRefundStatus(String refundNo) throws IOException;
}

Impl层 

package weixinpay.pay.service.impl;

import com.google.gson.Gson;
import com.wechat.pay.contrib.apache.httpclient.util.AesUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.util.EntityUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;
import weixinpay.pay.config.WxPayConfig;
import weixinpay.pay.entity.OrderInfo;
import weixinpay.pay.entity.RefundInfo;
import weixinpay.pay.enums.OrderStatus;
import weixinpay.pay.enums.wxpay.WxApiType;
import weixinpay.pay.enums.wxpay.WxNotifyType;
import weixinpay.pay.enums.wxpay.WxRefundStatus;
import weixinpay.pay.enums.wxpay.WxTradeState;
import weixinpay.pay.service.OrderInfoService;
import weixinpay.pay.service.PaymentInfoService;
import weixinpay.pay.service.RefundInfoService;
import weixinpay.pay.service.WxPayService;
import weixinpay.pay.vo.R;

import javax.annotation.Resource;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.security.GeneralSecurityException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.ReentrantLock;

@Service
@Slf4j
public class WxPayServiceImpl implements WxPayService {

    private final ReentrantLock lock = new ReentrantLock();
    @Resource
    private WxPayConfig wxPayConfig;
    @Resource
    private CloseableHttpClient wxPayClient;
    @Resource
    private OrderInfoService orderInfoService;
    @Resource
    private PaymentInfoService paymentInfoService;
    @Resource
    private RefundInfoService refundsInfoService;

    
    @Override
    public Map nativePayV2(Long productId) throws Exception {
        log.info("调用统一下单API");
        OrderInfo orderInfo = orderInfoService.createOrderByProductId(productId);
        String codeUrl = orderInfo.getCodeUrl();

        if (orderInfo != null && !StringUtils.isEmpty(codeUrl)) {
            log.info("订单已存在，二维码以保存");
            //返回二维码
            Map map = new HashMap<>();
            map.put("codeUrl", codeUrl);
            map.put("orderNo", orderInfo.getOrderNo());
            return map;
        }

        //调用统一下单API
        HttpPost httpPost = new HttpPost(wxPayConfig.getDomain().concat(WxApiType.NATIVE_PAY.getType()));

        // 请求body参数
        Gson gson = new Gson();
        Map paramsMap = new HashMap();
        paramsMap.put("appid", wxPayConfig.getAppid());
        paramsMap.put("mchid", wxPayConfig.getMchId());
        paramsMap.put("description", orderInfo.getTitle());
        paramsMap.put("out_trade_no", orderInfo.getOrderNo());
        paramsMap.put("notify_url", wxPayConfig.getNotifyDomain().concat(WxNotifyType.NATIVE_NOTIFY.getType()));

        Map amountMap = new HashMap();
        amountMap.put("total", orderInfo.getTotalFee());
        amountMap.put("currency", "CNY");

        paramsMap.put("amount", amountMap);

        //将参数转换成json字符串
        String jsonParams = gson.toJson(paramsMap);
        log.info("请求参数 ===> {}" + jsonParams);

        StringEntity entity = new StringEntity(jsonParams, "utf-8");
        entity.setContentType("application/json");
        httpPost.setEntity(entity);
        httpPost.setHeader("Accept", "application/json");

        //完成签名并执行请求
        CloseableHttpResponse response = wxPayClient.execute(httpPost);

        try {
            String bodyAsString = EntityUtils.toString(response.getEntity());//响应体
            int statusCode = response.getStatusLine().getStatusCode();//响应状态码
            if (statusCode == 200) { //处理成功
                log.info("成功, 返回结果 = " + bodyAsString);
            } else if (statusCode == 204) { //处理成功，无返回Body
                log.info("成功");
            } else {
                log.info("Native下单失败,响应码 = " + statusCode + ",返回结果 = " + bodyAsString);
                throw new IOException("request failed");
            }

            //响应结果
            Map resultMap = gson.fromJson(bodyAsString, HashMap.class);

            //二维码
            codeUrl = resultMap.get("code_url");
            //保存二维码

            String orderNo = orderInfo.getOrderNo();
            orderInfoService.saveCodeUrl(orderNo, codeUrl);

            //返回二维码
            Map map = new HashMap<>();
            map.put("codeUrl", codeUrl);
            map.put("orderNo", orderInfo.getOrderNo());
            return map;
        } finally {
            response.close();
        }

    }

    @Override
    public void processOrder(Map bodyMap) throws GeneralSecurityException {
        log.info("处理订单");
        String plainText = decryFromResource(bodyMap);
        //将明文转为Map
        Gson gson = new Gson();
        HashMap plaintTextMap = gson.fromJson(plainText, HashMap.class);
        String orderNo = (String) plaintTextMap.get("out_trade_no");

        

        //尝试获取锁：
        // 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
        if (lock.tryLock()) {
            try {
                // 处理重复的通知
                //接口调用的幂等性：无论接口被调用多少次，产生的结果时一致的。
                String orderStatus = orderInfoService.getOrderStatus(orderNo);
                if (!OrderStatus.NOTPAY.getType().equals(orderStatus)) {
                    return;
                }

                //模拟通知并发
                try {
                    TimeUnit.SECONDS.sleep(5);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

                //更新订单状态
                orderInfoService.updateStatueByOrderNo(orderNo, OrderStatus.SUCCESS);
                //记录支付日志
                paymentInfoService.createPaymentInfo(plainText);
            } finally {
                
                lock.unlock();
            }

        }
    }

    @Override
    public void cancelOrderNO(String orderNo) throws IOException {
        //关闭订单号
        this.closeOrder(orderNo);
        //更新订单号
        orderInfoService.updateStatueByOrderNo(orderNo, OrderStatus.CANCEL);
    }

    

    @Override
    public String queryOrder(String orderNo) throws Exception {
        log.info("查询接口调用===>", orderNo);
        String url = String.format(WxApiType.ORDER_QUERY_BY_NO.getType(), orderNo);
        url = wxPayConfig.getDomain().concat(url).concat("?mchid=").concat(wxPayConfig.getMchId());

        HttpGet httpGet = new HttpGet();
        httpGet.setHeader("Accept", "application/json");

        //完成签名并执行请求
        CloseableHttpResponse response = wxPayClient.execute(httpGet);


        try {
            String bodyAsString = EntityUtils.toString(response.getEntity());
            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode == 200) {
                log.info("成功, 查询退款返回结果 = " + bodyAsString);
            } else if (statusCode == 204) {
                log.info("成功");
            } else {
                throw new RuntimeException("查询退款异常, 响应码 = " + statusCode + ", 查询退款返回结果 = " + bodyAsString);
            }

            return bodyAsString;

        } finally {
            response.close();
        }
    }

    @Override
    public void checkOrderStatus(String orderNo) throws Exception {
        log.warn("根据订单号核实订单状态===>{}", orderNo);

        //调用微信支付查单接口
        String result = this.queryOrder(orderNo);
        Gson gson = new Gson();
        HashMap resultMap = gson.fromJson(result, HashMap.class);
        //获取微信支付端的订单状态
        String tradeState = resultMap.get("trade_state");
        if (WxTradeState.SUCCESS.getType().equals(tradeState)) {

            log.warn("核实订单已经支付===>", orderNo);
            //如果确定订单已经支付则更新本地订单状态
            orderInfoService.updateStatueByOrderNo(orderNo, OrderStatus.SUCCESS);
            //记录支付日志
            paymentInfoService.createPaymentInfo(result);

        }
        if (WxTradeState.NOTPAY.getType().equals(tradeState)){
            log.warn("核实订单未支付 ===> {}", orderNo);

            this.cancelOrderNO(orderNo);
            orderInfoService.updateStatueByOrderNo(orderNo,OrderStatus.CLOSED);

        }






    }

    @Override
    public void refund(String orderNo, String reason) throws IOException {
    log.info("创造退款单记录");

        RefundInfo refundsInfo  = refundsInfoService.createRefundByOrderNo(orderNo,reason);

        log.info("调用退款API");

//调用统一下单API
        String url = wxPayConfig.getDomain().concat(WxApiType.DOMESTIC_REFUNDS.getType());
        HttpPost httpPost =new HttpPost(url);
        //请求body参数
        Gson gson = new Gson();
        Map paramsMap = new HashMap<>();
        paramsMap.put("out_trade_no", orderNo);//订单编号
        paramsMap.put("out_refund_no", refundsInfo.getRefundNo());//退款单编号
        paramsMap.put("reason",reason);//退款原因
        paramsMap.put("notify_url", wxPayConfig.getNotifyDomain().concat(WxNotifyType.REFUND_NOTIFY.getType()));//退款通知地址

        Map amountMap = new HashMap();
        amountMap.put("refund", refundsInfo.getRefund());//退款金额
        amountMap.put("total", refundsInfo.getTotalFee());//原订单金额
        amountMap.put("currency", "CNY");//退款币种
        paramsMap.put("amount", amountMap);
        //将参数转换成json字符串
        String jsonParams = gson.toJson(paramsMap);
        log.info("请求参数 ===> {}" + jsonParams);

        StringEntity entity = new StringEntity(jsonParams,"utf-8");
        entity.setContentType("application/json");//设置请求报文格式
        httpPost.setEntity(entity);//将请求报文放入请求对象
        httpPost.setHeader("Accept", "application/json");//设置响应报文格式

        //完成签名并执行请求，并完成验签
        CloseableHttpResponse response = wxPayClient.execute(httpPost);

        try {

            //解析响应结果
            String bodyAsString = EntityUtils.toString(response.getEntity());

            int statusCode = response.getStatusLine().getStatusCode();

            if (statusCode == 200) {
                log.info("成功, 退款返回结果 = " + bodyAsString);
            } else if (statusCode == 204) {
                log.info("成功");
            } else {
                throw new RuntimeException("退款异常, 响应码 = " + statusCode+ ", 退款返回结果 = " + bodyAsString);
            }

            //更新订单状态
            orderInfoService.updateStatusByOrderNo(orderNo, OrderStatus.REFUND_PROCESSING);

            //更新退款单
            refundsInfoService.updateRefund(bodyAsString);

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            response.close();
        }
    }

    @Override
    public void checkRefundStatus(String refundNo) throws IOException {

        log.warn("根据退款单号核实退款单状态 ===> {}", refundNo);

        //调用查询退款单接口
        String result = this.queryRefund(refundNo);

        //组装json请求体字符串
        Gson gson = new Gson();
        Map resultMap = gson.fromJson(result, HashMap.class);

        //获取微信支付端退款状态
        String status = resultMap.get("status");

        String orderNo = resultMap.get("out_trade_no");

        if (WxRefundStatus.SUCCESS.getType().equals(status)) {

            log.warn("核实订单已退款成功 ===> {}", refundNo);

            //如果确认退款成功，则更新订单状态
            orderInfoService.updateStatusByOrderNo(orderNo, OrderStatus.REFUND_SUCCESS);

            //更新退款单
            refundsInfoService.updateRefund(result);
        }

        if (WxRefundStatus.ABNORMAL.getType().equals(status)) {

            log.warn("核实订单退款异常  ===> {}", refundNo);

            //如果确认退款成功，则更新订单状态
            orderInfoService.updateStatusByOrderNo(orderNo, OrderStatus.REFUND_ABNORMAL);

            //更新退款单
            refundsInfoService.updateRefund(result);
        }
    }

    private String queryRefund(String refundNo) throws IOException {
        log.info("查询退款接口调用 ===> {}", refundNo);

        String url =  String.format(WxApiType.DOMESTIC_REFUNDS_QUERY.getType(), refundNo);
        url = wxPayConfig.getDomain().concat(url);

        //创建远程Get 请求对象
        HttpGet httpGet = new HttpGet(url);
        httpGet.setHeader("Accept", "application/json");

        //完成签名并执行请求
        CloseableHttpResponse response = wxPayClient.execute(httpGet);

        try {
            String bodyAsString = EntityUtils.toString(response.getEntity());
            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode == 200) {
                log.info("成功, 查询退款返回结果 = " + bodyAsString);
            } else if (statusCode == 204) {
                log.info("成功");
            } else {
                throw new RuntimeException("查询退款异常, 响应码 = " + statusCode+ ", 查询退款返回结果 = " + bodyAsString);
            }

            return bodyAsString;

        } finally {
            response.close();
        }
    }


    private void closeOrder(String orderNo) throws IOException {
        log.info("关单接口的调用，订单号===>{}", orderNo);
        //创建远程对象
        String url = String.format(WxApiType.CLOSE_ORDER_BY_NO.getType(), orderNo);
        url = wxPayConfig.getDomain().concat(url);
        HttpPost httpPost = new HttpPost(url);
        //组装Json请求体
        Gson gson = new Gson();
        HashMap paramsMap = new HashMap<>();
        paramsMap.put("mchid", wxPayConfig.getMchId());
        String jsonParams = gson.toJson(paramsMap);
        log.info("请求参数===>{}", jsonParams);

        //将请求参数设置到请求对象中
        StringEntity entity = new StringEntity(jsonParams, "utf-8");
        entity.setContentType("application/json");
        httpPost.setEntity(entity);
        httpPost.setHeader("Accept", "application/json");

        //完成签名并执行请求
        CloseableHttpResponse response = wxPayClient.execute(httpPost);

        try {
            int statusCode = response.getStatusLine().getStatusCode();//响应状态码
            if (statusCode == 200) { //处理成功
                log.info("成功200");
            } else if (statusCode == 204) { //处理成功，无返回Body
                log.info("成功204");
            } else {
                log.info("Native下单失败,响应码 = " + statusCode);
                throw new IOException("request failed");
            }

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            response.close();
        }
    }


    
    private String decryFromResource(Map bodyMap) throws GeneralSecurityException {
        log.info("密文解密");

        //通知数据
        Map resourceMap = (Map) bodyMap.get("resource");

        //数据密文
        String ciphertext = resourceMap.get("ciphertext");
        //随机串
        String nonce = resourceMap.get("nonce");
        //附加数据
        log.info("密文===>{}", ciphertext);
        String associatedData = resourceMap.get("associated_data");
        AesUtil aesUtil = new AesUtil(wxPayConfig.getApiV3Key().getBytes(StandardCharsets.UTF_8));
        String plainText = aesUtil.decryptToString(associatedData.getBytes(StandardCharsets.UTF_8),
                nonce.getBytes(StandardCharsets.UTF_8),
                ciphertext);

        log.info("明文===>{}", plainText);
        return plainText;


    }
}

 退款 功能编写

由于退款的service serviceImpl 写入商品订单管理了，这里就不单独写了

package weixinpay.pay.task;


import lombok.extern.slf4j.Slf4j;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
import weixinpay.pay.entity.OrderInfo;
import weixinpay.pay.entity.RefundInfo;
import weixinpay.pay.service.OrderInfoService;
import weixinpay.pay.service.RefundInfoService;
import weixinpay.pay.service.WxPayService;

import javax.annotation.Resource;
import java.util.List;

@Slf4j
@Component
public class WxPayTask {

    @Resource
    private OrderInfoService orderInfoService;

    @Resource
    private WxPayService wxPayService;

    @Resource
    private RefundInfoService refundInfoService;

    
    //@Scheduled(cron = "0/3 * * * * ?")
    public void task1(){
        log.info("task1 被执行......");
    }

    
    @Scheduled(cron = "0/30 * * * * ?")
    public void orderConfirm() throws Exception {
        log.info("orderConfirm 被执行......");

        List orderInfoList = orderInfoService.getNoPayOrderByDuration(5);

        for (OrderInfo orderInfo : orderInfoList) {
            String orderNo = orderInfo.getOrderNo();
            log.warn("超时订单 ===> {}", orderNo);

            //核实订单状态：调用微信支付查单接口
            wxPayService.checkOrderStatus(orderNo);
        }
    }


    
    @Scheduled(cron = "0/30 * * * * ?")
    public void refundConfirm() throws Exception {
        log.info("refundConfirm 被执行......");

        //找出申请退款超过5分钟并且未成功的退款单
        List refundInfoList = refundInfoService.getNoRefundOrderByDuration(1);

        for (RefundInfo refundInfo : refundInfoList) {
            String refundNo = refundInfo.getRefundNo();
            log.warn("超时未退款的退款单号 ===> {}", refundNo);

            //核实订单状态：调用微信支付查询退款接口
            wxPayService.checkRefundStatus(refundNo);
        }
    }

}

工具类 

HttpClientUtils

package com.atguigu.paymentdemo.util;

import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.*;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import javax.net.ssl.SSLContext;
import java.io.IOException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.text.ParseException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;


public class HttpClientUtils {
	private String url;
	private Map param;
	private int statusCode;
	private String content;
	private String xmlParam;
	private boolean isHttps;

	public boolean isHttps() {
		return isHttps;
	}

	public void setHttps(boolean isHttps) {
		this.isHttps = isHttps;
	}

	public String getXmlParam() {
		return xmlParam;
	}

	public void setXmlParam(String xmlParam) {
		this.xmlParam = xmlParam;
	}

	public HttpClientUtils(String url, Map param) {
		this.url = url;
		this.param = param;
	}

	public HttpClientUtils(String url) {
		this.url = url;
	}

	public void setParameter(Map map) {
		param = map;
	}

	public void addParameter(String key, String value) {
		if (param == null)
			param = new HashMap();
		param.put(key, value);
	}

	public void post() throws ClientProtocolException, IOException {
		HttpPost http = new HttpPost(url);
		setEntity(http);
		execute(http);
	}

	public void put() throws ClientProtocolException, IOException {
		HttpPut http = new HttpPut(url);
		setEntity(http);
		execute(http);
	}

	public void get() throws ClientProtocolException, IOException {
		if (param != null) {
			StringBuilder url = new StringBuilder(this.url);
			boolean isFirst = true;
			for (String key : param.keySet()) {
				if (isFirst) {
					url.append("?");
					isFirst = false;
				}else {
					url.append("&");
				}
				url.append(key).append("=").append(param.get(key));
			}
			this.url = url.toString();
		}
		HttpGet http = new HttpGet(url);
		execute(http);
	}

	
	private void setEntity(HttpEntityEnclosingRequestBase http) {
		if (param != null) {
			List nvps = new LinkedList();
			for (String key : param.keySet())
				nvps.add(new BasicNameValuePair(key, param.get(key))); // 参数
			http.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8)); // 设置参数
		}
		if (xmlParam != null) {
			http.setEntity(new StringEntity(xmlParam, Consts.UTF_8));
		}
	}

	private void execute(HttpUriRequest http) throws ClientProtocolException,
			IOException {
		CloseableHttpClient httpClient = null;
		try {
			if (isHttps) {
				SSLContext sslContext = new SSLContextBuilder()
						.loadTrustMaterial(null, new TrustStrategy() {
							// 信任所有
							public boolean isTrusted(X509Certificate[] chain,
									String authType)
									throws CertificateException {
								return true;
							}
						}).build();
				SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
						sslContext);
				httpClient = HttpClients.custom().setSSLSocketFactory(sslsf)
						.build();
			} else {
				httpClient = HttpClients.createDefault();
			}
			CloseableHttpResponse response = httpClient.execute(http);
			try {
				if (response != null) {
					if (response.getStatusLine() != null)
						statusCode = response.getStatusLine().getStatusCode();
					HttpEntity entity = response.getEntity();
					// 响应内容
					content = EntityUtils.toString(entity, Consts.UTF_8);
				}
			} finally {
				response.close();
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			httpClient.close();
		}
	}

	public int getStatusCode() {
		return statusCode;
	}

	public String getContent() throws ParseException, IOException {
		return content;
	}

}

HttpUtils

package com.atguigu.paymentdemo.util;

import javax.servlet.http.HttpServletRequest;
import java.io.BufferedReader;
import java.io.IOException;


public class HttpUtils {

    
    public static String readData(HttpServletRequest request) {
        BufferedReader br = null;
        try {
            StringBuilder result = new StringBuilder();
            br = request.getReader();
            for (String line; (line = br.readLine()) != null; ) {
                if (result.length() > 0) {
                    result.append("n");
                }
                result.append(line);
            }
            return result.toString();
        } catch (IOException e) {
            throw new RuntimeException(e);
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

 OrderNoUtils

package com.atguigu.paymentdemo.util;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;


public class OrderNoUtils {

    
    public static String getOrderNo() {
        return "ORDER_" + getNo();
    }

    
    public static String getRefundNo() {
        return "REFUND_" + getNo();
    }

    
    public static String getNo() {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
        String newDate = sdf.format(new Date());
        String result = "";
        Random random = new Random();
        for (int i = 0; i < 3; i++) {
            result += random.nextInt(10);
        }
        return newDate + result;
    }

}

 R

package com.atguigu.paymentdemo.vo;

import lombok.Data;
import lombok.experimental.Accessors;

import java.util.HashMap;
import java.util.Map;

@Data
@Accessors(chain = true)
public class R {

    private Integer code; //响应码
    private String message; //响应消息
    private Map data = new HashMap<>();

    public static R ok(){
        R r = new R();
        r.setCode(0);
        r.setMessage("成功");
        return r;
    }

    public static R error(){
        R r = new R();
        r.setCode(-1);
        r.setMessage("失败");
        return r;
    }

    public R data(String key, Object value){
        this.data.put(key, value);
        return this;
    }

}

 YMl配置文件

server:
  port: 8090 #服务端口
Spring :
  application:
    name: Pay #应用的名字
  jackson:
    data-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8

#数据库连接
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/payment_demo?serverTimezone=GMT%2B8&characterEncoding=utf-8
    username: root
    password: 123456
mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
  mapper-locations: classpath:weixinpay/pay/mapper/xml/*.xml
logging:
  level:
    root: info

 wxpay.properties

# 微信支付相关参数
# 商户号
wxpay.mch-id=1558950191
# 商户API证书序列号
wxpay.mch-serial-no=34345964330B66427E0D3D28826C4993C77E631F

# 商户私钥文件
wxpay.private-key-path=apiclient_key.pem
# APIv3密钥
wxpay.api-v3-key=UDuLFDcmy5Eb6o0nTNZdu6ek4DDh4K8B
# APPID
wxpay.appid=wx74862e0dfcf69954
# 微信服务器地址
wxpay.domain=https://api.mch.weixin.qq.com
# 接收结果通知地址
# 注意：每次重新启动ngrok，都需要根据实际情况修改这个配置
wxpay.notify-domain=https://500c-219-143-130-12.ngrok.io

# APIv2密钥
wxpay.partnerKey: T6m9iK73b0kn9g5v426MKfHQH7X8rKwb

 

 

总结

此项目在线支付的一系列流程，项目虽小，但内容十分丰富。麻雀虽小但五脏俱全