聚合支付，实现微信和支付宝扫一码支付

ゞ浴缸里的玫瑰 2022-12-15 14:02 499阅读 0赞

# 聚合支付，实现微信和支付宝扫一码支付 #

## 1 目标 ##

我们要实现的目标是：用微信客户端扫二维码的时候，用微信支付，用支付宝扫二维码的时候用支付宝支付。这就要求我们对微信和支付宝做一个聚合，在平台内做一个客户端判断。

## 2 支付选型 ##

支付宝我们选用的是手机网页支付

微信用的是native支付

## 3 准备 ##

新建一个工程，结构如下所示

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center]

主要用到的技术有springboot+springcloud+nacos+zxing二维码生成+alipay SDK

父工程依赖

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
    </parent>
    
    
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.1.0.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Greenwich.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

common工程依赖

<dependencies>
    
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-nacos-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.60</version>
        </dependency>
    
        
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>core</artifactId>
            <version>3.3.3</version>
        </dependency>
    
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>3.3.3</version>
        </dependency>
    </dependencies>

支付宝代理工程依赖

<dependencies>
        <dependency>
            <groupId>cn.lx.pay</groupId>
            <artifactId>juhe-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    
        
        <dependency>
            <groupId>com.alipay.sdk</groupId>
            <artifactId>alipay-sdk-java</artifactId>
            <version>3.7.73.ALL</version>
        </dependency>
    
        
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>
    </dependencies>

接下来就是支付宝代理工程的配置文件了

server:
      port: 56010
    
    spring:
      application:
        name: juhe-zhifubao
      cloud:
        nacos:
          discovery:
            server-addr: 127.0.0.1:8848
            cluster-name: DEFAULT
            namespace: b36ded08-caa6-408a-9eee-cc50698693be

这里使用的是nacos作为注册中心，所以别忘了在启动类上加入注解`@EnableDiscoveryClient`

## 4 二维码生成技术 ##

二维码说穿了也没有什么，实际上就是将一个网址转化为了一个唯一的图片，使用扫码工具扫描解析这个图片得到网址，然后访问网址

我们这里用的二维码生成技术是谷歌google 公司的 zxing，CSDN有很多关于这个的教程，想要了解更多可以自己去找一下。

下面是生成二维码的工具类

public class QRCodeUtil { 
        /** * 生成二维码 * @param content 二维码对应的URL * @param width 二维码图片宽度 * @param height 二维码图片高度 * @return */
        public static String createQRCode(String content, int width, int height) throws IOException { 
            String resultImage = "";
            //除了尺寸，传入内容不能为空
            if (!StringUtils.isEmpty(content)) { 
                ServletOutputStream stream = null;
                ByteArrayOutputStream os = new ByteArrayOutputStream();
                //二维码参数
                @SuppressWarnings("rawtypes")
                HashMap<EncodeHintType, Comparable> hints = new HashMap<>();
                //指定字符编码为“utf-8”
                hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
                //L M Q H四个纠错等级从低到高，指定二维码的纠错等级为M
                //纠错级别越高，可以修正的错误就越多，需要的纠错码的数量也变多，相应的二维吗可储存的数据就会减少
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
                //设置图片的边距
                hints.put(EncodeHintType.MARGIN, 1);
    
                try { 
                    //zxing生成二维码核心类
                    QRCodeWriter writer = new QRCodeWriter();
                    //把输入文本按照指定规则转成二维吗
                    BitMatrix bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
                    //生成二维码图片流
                    BufferedImage bufferedImage = MatrixToImageWriter.toBufferedImage(bitMatrix);
                    //输出流
                    ImageIO.write(bufferedImage, "png", os);
                    /** * 原生转码前面没有 data:image/png;base64 这些字段，返回给前端是无法被解析，所以加上前缀 */
                    resultImage = new String("data:image/png;base64," + Base64.getEncoder().encodeToString(os.toByteArray()));
                    return resultImage;
                } catch (Exception e) { 
                    e.printStackTrace();
                } finally { 
                    if (stream != null) { 
                        stream.flush();
                        stream.close();
                    }
                }
            }
            return null;
        }
    
        public static void main(String[] args) throws IOException { 
    
            /** * http://33833g4w32.wicp.vip:49739/create/ali/pay * 这个就是去支付宝下面的访问地址 * 手机访问了这个链接之后，他会调起手机端的支付宝，然后进行支付 * 我这里使用了内网穿透工具 * 如果你的手机和你的电脑不在同一个局域网下，那么使用你手机访问电脑的ip+项目端口是没有用的 */
            String qrCode = createQRCode("http://33833g4w32.wicp.vip:49739/create/ali/pay", 200, 200);
            System.out.println(qrCode);
        }
    
    }

## 5 对接支付宝手机网页支付 ##

一开始我们就已经说了，我们这里使用支付宝的手机网站支付。接下来就去支付宝开放平台，申请沙箱账号，找手机网站支付的开发文档

地址：`https://opendocs.alipay.com/open/204/105695`

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 1]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 2]

支付宝已经详细解释了每个参数的意义，并且那些是必须参数

下面提供我自己的代码

@Controller
    @Slf4j
    public class PayController { 
    
        @GetMapping("/create/ali/pay")
        public void aliPay(HttpServletRequest request, HttpServletResponse response){ 
            AlipayClient alipayClient = new DefaultAlipayClient(
                    "https://openapi.alipaydev.com/gateway.do",
                    "2016101700706706",
                    "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",
                    "json",
                    "utf-8",
                    "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAh10D0xGEOKtTOxVmNKwi0hrJipudYW28aRS3fkRa7VJWsxHPiGRKOj0HFKL+zllNpkGTGdx00TlIXEVcUP0zoG5PWtPWUNpUs1pyQxp3LeMgT5GyIfSvrCa+gmdICG8k4a9gJP0SJa+16RvbUyu/d/3o7rRcs8v9MUk/EOP16xtqPaW3wWoxuBWaINLftPxWIaNrdaugJkiZ8GiuGJ9wmREdT6Rgw7usT1OGYf+YpS+nVBc87NMZkJwmDFLI45HdK5Tnr8zqN2ctgzJ4jfh39/xU+CixrP17SVVQ7daMe98lZvfM6Mz99vWJ4Il8pmmXpEeJ0/X15Qu3jOGPDeAzrwIDAQAB",
                    "RSA2");
    
            AlipayTradeWapPayRequest payRequest = new AlipayTradeWapPayRequest();
    
            AlipayTradeWapPayModel alipayTradeWapPayModel = new AlipayTradeWapPayModel();
            //封装订单相关参数
            //下面4个是关键入参
            //订单号不能重复
            alipayTradeWapPayModel.setOutTradeNo(UUID.randomUUID().toString());
            alipayTradeWapPayModel.setSubject("Iphone6 16G");
            alipayTradeWapPayModel.setTotalAmount("23");
            alipayTradeWapPayModel.setProductCode("FLASH-PAY");
    
            alipayTradeWapPayModel.setTimeoutExpress("30m");
            //支付宝订单相关参数
            payRequest.setBizModel(alipayTradeWapPayModel);
            //设置同步地址
            payRequest.setReturnUrl("http://192.168.43.210:8081/ali/callback");
            //设置异步地址
            payRequest.setNotifyUrl("http://192.168.43.210:8081/ali/callback");
            AlipayTradeWapPayResponse payResponse = null;
            try { 
                payResponse = alipayClient.pageExecute(payRequest);
            } catch (AlipayApiException e) { 
                throw new RuntimeException("支付异常");
            }
            if(payResponse.isSuccess()){ 
                log.info("调用成功:{}",payResponse.getBody());
                response.setContentType("text/html;charset=UTF-8");
                try { 
                    response.getWriter().write(payResponse.getBody());
                    response.getWriter().flush();
                    response.getWriter().close();
    
                } catch (IOException e) { 
                    e.printStackTrace();
                    throw new RuntimeException("返回响应异常");
                }
    
            } else { 
                log.info("调用失败");
            }
        }
    }

扫码之后的效果

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 3]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 4]

## 6 优化支付宝支付 ##

在上一步中，我们的支付宝的订单金额是固定的，不符合我们的日常使用，我们这一步需要实现扫码后输入金额，用户确认后，才调起客户端进行真正的支付

那我们就需要一个输入金额的页面了，我这里选择使用freemarker

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-freemarker</artifactId>
    </dependency>

页面pay.ftl，放在resource下的templates文件夹下

<!DOCTYPE html>
    <html xmlns:th="http://www.w3.org/1999/xhtml">
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
        <meta http-equiv="Pragma" content="no-cache">
        <meta http-equiv="Cache-Control" content="no-cache">
        <meta name="renderer" content="webkit">
        <meta http-equiv="Expires" content="0">
        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
           <title>向商家付款</title>
    </head>
    <body>
    
    <div class="content">
        
        <p class="name">正兴鸡排</p>
    </div>
    <div class="form-container">
        
        <form id="form" action="${rc.contextPath}/create/ali/pay" method="post">
    
            <p><span>商品名称 :</span><input type="text" name="subject" value="正兴鸡排" readonly="readonly" maxlength="5" size="25"/></p>
            <p><span>订单描述 :</span><input type="text" name="body" value="向lx付款" readonly="readonly" maxlength="5" size="25"/></p>
            <p id="text" style="width: auto"><span>付款金额(元) :</span><input id="inp" type="text" name="totalAmount" maxlength="5" size="20"/></p>
            <input type="submit" value="立即支付" class="pay">
             
        </form>
    </div>
    </body>
       
    <script type="text/javascript" src="./keybord.js"></script>
    
    
    <script type="text/javascript"> (function () { var text = document.getElementById('text'); var input = document.getElementById('inp'); text.onclick = function () { new KeyBoard(input); }; })(); </script>
    <style> .form-container { padding: 0 10px;; } input { margin-top: 10px; border: 0; } img { width: 100px; height: 50px;; margin-left: 25%; } .content .name { margin-top: 30px; } .pay { width: 100%; height: 50px;; font-size: 20px;; text-align: center; background: rgb(26, 132, 231);; border-radius: 5px; border: 1px solid #ccc; color: white; margin: 0 auto; } .content { width: 100%; height: 150px; background: rgb(26, 132, 231); text-align: center; overflow: hidden; } .content p { margin: 0; padding: 0; } .price input { text-align: center; background: rgb(26, 132, 231); color: white; outline: none;; font-size: 20px;; } #form p { width: 100%; height: 40px;; border-bottom: 1px solid #ccc; font-size: 14px;; display: flex; justify-content: space-between; } #form p span { float: left; display: block;; font-size: 13px; line-height: 40px; flex-shrink: 0; } #form p input { flex-shrink: 0; height: 20px; float: right;; line-height: 30px; text-align: right; outline: none; } #text { border: 2px solid rgb(196, 184, 184); padding: 0 10px; border-radius: 5px; height: 50px;; line-height: 50px; font-size: 20px; } #inp { border: 0; outline: none;; width: 62%; font-size: 20px;; } </style>
    </html>

为该页面添加一个控制器

@Component
    public class MvcConfig implements WebMvcConfigurer { 
        /** * Configure simple automated controllers pre-configured with the response * status code and/or a view to render the response body. This is useful in * cases where there is no need for custom controller logic -- e.g. render a * home page, perform simple site URL redirects, return a 404 status with * HTML content, a 204 with no content, and more. * * @param registry */
        @Override
        public void addViewControllers(ViewControllerRegistry registry) { 
            registry.addViewController("/ali/pay/page").setViewName("pay");
        }
    }

编写一个vo，用来接收表单提交的参数

@Data
    public class PayParamVO { 
    
        private String subject;
        private String body;
        private String totalAmount;
    
    }

接着我们将请求支付的代码修改一下

@Controller
    @Slf4j
    public class PayController { 
    
        @PostMapping("/create/ali/pay")
        public void aliPay(PayParamVO payParamVO,HttpServletRequest request, HttpServletResponse response){ 
            AlipayClient alipayClient = new DefaultAlipayClient(
                "https://openapi.alipaydev.com/gateway.do",
                "2016101700706706",
                "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",
                "json",
                "utf-8",
                "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAh10D0xGEOKtTOxVmNKwi0hrJipudYW28aRS3fkRa7VJWsxHPiGRKOj0HFKL+zllNpkGTGdx00TlIXEVcUP0zoG5PWtPWUNpUs1pyQxp3LeMgT5GyIfSvrCa+gmdICG8k4a9gJP0SJa+16RvbUyu/d/3o7rRcs8v9MUk/EOP16xtqPaW3wWoxuBWaINLftPxWIaNrdaugJkiZ8GiuGJ9wmREdT6Rgw7usT1OGYf+YpS+nVBc87NMZkJwmDFLI45HdK5Tnr8zqN2ctgzJ4jfh39/xU+CixrP17SVVQ7daMe98lZvfM6Mz99vWJ4Il8pmmXpEeJ0/X15Qu3jOGPDeAzrwIDAQAB",
                "RSA2");
    
            AlipayTradeWapPayRequest payRequest = new AlipayTradeWapPayRequest();
    
            AlipayTradeWapPayModel alipayTradeWapPayModel = new AlipayTradeWapPayModel();
            //封装订单相关参数
            //下面4个是关键入参
            alipayTradeWapPayModel.setOutTradeNo(UUID.randomUUID().toString());
            //现在就是动态的了
            //alipayTradeWapPayModel.setSubject("Iphone6 16G");
            alipayTradeWapPayModel.setSubject(payParamVO.getSubject());
            //alipayTradeWapPayModel.setTotalAmount("23");
            alipayTradeWapPayModel.setTotalAmount(payParamVO.getTotalAmount());
            alipayTradeWapPayModel.setBody(payParamVO.getBody());
            alipayTradeWapPayModel.setProductCode("FLASH-PAY");
    
            alipayTradeWapPayModel.setTimeoutExpress("30m");
            //支付宝订单相关参数
            payRequest.setBizModel(alipayTradeWapPayModel);
            //设置同步地址
            payRequest.setReturnUrl("http://192.168.43.210:8081/ali/callback");
            //设置异步地址
            payRequest.setNotifyUrl("http://192.168.43.210:8081/ali/callback");
            AlipayTradeWapPayResponse payResponse = null;
            try { 
                payResponse = alipayClient.pageExecute(payRequest);
            } catch (AlipayApiException e) { 
                throw new RuntimeException("生成支付异常");
            }
            if(payResponse.isSuccess()){ 
                log.info("调用成功:{}",payResponse.getBody());
                response.setContentType("text/html;charset=UTF-8");
                try { 
                    response.getWriter().write(payResponse.getBody());
                    response.getWriter().flush();
                    response.getWriter().close();
    
                } catch (IOException e) { 
                    e.printStackTrace();
                    throw new RuntimeException("返回响应异常");
                }
    
            } else { 
                log.info("调用失败");
            }
        }
    }

效果如下

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 5]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 6]

## 7 支付客户端识别 ##

微信支付和支付宝差不多，但是微信没有沙箱环境，申请开通支付需要很多证明文件，比如营业执照之类的，这些对于个人兴趣爱好者来说，实在是没有办法。所以这里不讲如何对接微信，我们只将客户端识别功能实现。

我们去浏览器开发者模式，随便找一个请求，看一下这个请求的请求头，我们会发现有下面一项

这是火狐浏览器的：`User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0`

这是Chrome浏览器的：`User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3970.5 Safari/537.36`

再看postman的：·`PostmanRuntime/7.26.5`

与之对应的，支付宝的标识：`Mozilla/5.0 (Linux; Android 10; JSN-AL00 Build/HONORJSN-AL00; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.99 Mobile Safari/537.36 NebulaSDK/1.8.100112 Nebula AlipayDefined(nt:4G,ws:424|0|2.55) AliApp(AP/10.1.52.1226) AlipayClient/10.1.52.1226 Language/zh-Hans useStatusBar/true isConcaveScreen/true`

微信的标识：`Mozilla/5.0 (Linux; Android 10; JSN-AL00 Build/HONORJSN-AL00; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/78.0.3904.62 XWEB/2691 MMWEBSDK/200901 Mobile Safari/537.36 MMWEBID/4279 MicroMessenger/7.0.19.1760(0x27001351) Process/toolsmp WeChat/arm64 NetType/4G Language/zh_CN ABI/arm64`

我们提取这些标识特有的单词进行判断

public enum BrowserType { 
        ALIPAY,//支付宝
        WECHAT,//微信
        PC_BROWSER,//pc端浏览器
        MOBILE_BROWSER; //手机端浏览器
    
    
        /** * 根据UA获取浏览器类型 * @param userAgent userAgent * @return 浏览器类型 */
        public static BrowserType valueOfUserAgent(String userAgent) { 
            if (userAgent != null && userAgent.contains("AlipayClient")) { 
                return BrowserType.ALIPAY;
            }else if (userAgent != null && userAgent.contains("MicroMessenger")) { 
                return BrowserType.WECHAT;
            }else{ 
                return BrowserType.MOBILE_BROWSER;
            }
        }
    }

这个我以前用的工具类，获取了浏览器类型之后，调起对应的支付接口。

今天我们不这么用，我们使用gateway网关，由网关的请求头断言，决定将请求转发给那个微服务。

### 7.1 创建一个gateway网关 ###

导入依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-nacos-discovery</artifactId>
        </dependency>
    </dependencies>

application.xml配置文件

server:
      #我这里将端口修改为了56010，是因为我配置了内网穿透的端口就是56010，改内网穿透的端口麻烦了一点，所以我这里就直接改程序了
      port: 56010
    
    spring:
      application:
        name: juhe-gateway
      cloud:
        nacos:
          discovery:
            server-addr: 127.0.0.1:8848
            cluster-name: DEFAULT
            namespace: b36ded08-caa6-408a-9eee-cc50698693be
    
    
        gateway:
          globalcors:
            corsConfigurations:
              '[/**]':
                allowedOrigins: "*"
                allowedMethods:
                  - GET
                  - POST
                  - PUT
                  - DELETE
    
          routes:
            - id: zhifubao_route
              uri: lb://juhe-zhifubao
              #满足了下面两个条件，请求才会被转发到zhifubao
              predicates:
                #匹配请求头中user-agent的值中包含AlipayClient的请求
                - Header=User-Agent, .+AlipayClient.+
                #匹配请求路径为/pay/page,/create/ali/pay的请求
                - Path=/pay/page,/create/ali/pay
    
            - id: wx_route
              uri: lb://juhe-wx
              predicates:
                - Header=User-Agent, .+MicroMessenger.+
                - Path=/pay/page,/create/wx/pay

网关的重要配置就完成了

### 7.2 创建一个微信支付的工程 ###

这个工程主要负责微信扫码之后的一系列处理

工程名`juhe-wx`

<dependencies>
        <dependency>
            <groupId>cn.lx.pay</groupId>
            <artifactId>juhe-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-freemarker</artifactId>
        </dependency>
    </dependencies>

application.yml配置文件

server:
      port: 57020
    
    spring:
      application:
        name: juhe-wx
      cloud:
        nacos:
          discovery:
            server-addr: 127.0.0.1:8848
            cluster-name: DEFAULT
            namespace: b36ded08-caa6-408a-9eee-cc50698693be
    
      freemarker:
        request-context-attribute: rc

页面就直接使用上面支付宝的，但是你要修改一个东西，表单提交的路径，现在你要提交的微信的

还有mvc的配置类，我们将支付宝的配置类也修改成这样，扫码的时候回根据客户端类型转发到对应的服务

最后一步，我们给微信服务写一个测试的controller

@Controller
    @Slf4j
    public class PayController { 
    
        @PostMapping("/create/wx/pay")
        public void aliPay( HttpServletRequest request, HttpServletResponse response){ 
            log.info("微信支付创建成功");
        }
    }

控制台打印这句，说明调用的是微信服务。

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center]: /images/20221123/5472a60a6ff942cc811b953819eacfae.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 1]: /images/20221123/5f0baa85d9914b87bdebce228f2d1e90.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 2]: /images/20221123/b6c288eca10e4c57a236e6e28bab9faf.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 3]: /images/20221123/628683822743497a90b975d80264a139.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 4]: /images/20221123/9ae88f29d7be4f849fa309c897959cfa.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 5]: /images/20221123/544a9af39c0c43848bad6b760ae95de2.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMDEyOTgx_size_16_color_FFFFFF_t_70_pic_center 6]: /images/20221123/0ddd8cf7a33646b48db0afd627d3fb02.png