舒大少博客

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1. 注册微信商户
2. 下载微信支付的 SDK
3. 打开idea打开微信支付的sdk复制到自己的项目中
4. 在项目里创建配置类，继承WXPayConfig类，在里面添加商户信息

   public class MyWxPayConfig extends WXPayConfig{
       @Override
       String getAppID() {
           return "商户appid";
       }
   
       @Override
       String getMchID() {
           return "商户号";
       }
   
       @Override
       String getKey() {
           return "证书秘钥";
       }
   
       @Override
       InputStream getCertStream() {
           return null;
       }
   
       @Override
       IWXPayDomain getWXPayDomain() {
           MyWXPayDomain domain=new MyWXPayDomain();
           return domain;
       }
   }

5. 在项目中创建一个类实现IWXPayDomain接口

   @Override
   public void report(String domain, long elapsedTimeMillis, Exception ex) {
   
   }
   
   @Override
   public DomainInfo getDomain(WXPayConfig config) {
       DomainInfo info=new DomainInfo("api.mch.weixin.qq.com",true);
       return info;
   }

6. 编写场景类支付

   public class TestPay {
       public static void main(String[] args) throws Exception {
           MyWxPayConfig config = new MyWxPayConfig();
   
           WXPay wxpay = new WXPay(config);
   
           Map<String, String> data = new HashMap<String, String>();
           data.put("body", "腾讯充值中心-QQ会员充值");
           data.put("out_trade_no", "2022050719401100000012");
           data.put("device_info", "");
           data.put("fee_type", "CNY");
           data.put("total_fee", "1");
           data.put("spbill_create_ip", "123.12.12.123");
           data.put("notify_url", "http://www.example.com/wxpay/notify");
           data.put("trade_type", "NATIVE");  // 此处指定为扫码支付
           data.put("product_id", "12");
   
           try {
               Map<String, String> resp = wxpay.unifiedOrder(data);
               System.out.println(resp);
           } catch (Exception e) {
               e.printStackTrace();
           }
       }
   }

7. 内网穿透
   网址 natapp.cn，注册登录完成实名，然后购买免费隧道，复制token，下载客户端，在exe当前目录打开cmd，输入 natapp -authtoken=token
8. 回应消息给微信后台

   @RequestMapping("/notify_url")
   public void doPayNotify(HttpServletRequest request, HttpServletResponse response) throws IOException {
       ServletInputStream inputStream = request.getInputStream();
       byte[] buffer=new byte[1024];
       int len=0;
       while( (len= inputStream.read(buffer))!=-1 ){
           System.out.println(new String(buffer,0,len));
       }
       response.getWriter().write("<xml>\n" +
               "  <return_code><![CDATA[SUCCESS]]></return_code>\n" +
               "  <return_msg><![CDATA[OK]]></return_msg>\n" +
               "</xml>");
   }

9. zxing二维码生成

   <!--zxing二维码生成-->
   <!-- https://mvnrepository.com/artifact/com.google.zxing/core -->
   <dependency>
       <groupId>com.google.zxing</groupId>
       <artifactId>core</artifactId>
       <version>3.3.3</version>
   </dependency>
   <!--zxing二维码生成-->
   <!-- https://mvnrepository.com/artifact/com.google.zxing/javase -->
   <dependency>
       <groupId>com.google.zxing</groupId>
       <artifactId>javase</artifactId>
       <version>3.4.0</version>
   </dependency>

10. 绘制二维码

    // 绘制二维码
    @RequestMapping("/qrcode")
    public void qrcode(HttpServletResponse response)throws URISyntaxException, IOException {
        //二维码需要包含的文本内容
        String uri ="http://www.baidu.com";
        HashMap<EncodeHintType,Object> hints=new HashMap<>();
        hints.put(EncodeHintType.CHARACTER_SET,"UTF-8");
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
        hints.put(EncodeHintType.MARGIN,2);
        try {
            BitMatrix bitMatrix=new MultiFormatWriter().encode(uri, BarcodeFormat.QR_CODE,200,200,hints);
            MatrixToImageWriter.writeToStream(bitMatrix,"PNG",response.getOutputStream());
            System.out.println("创建二维码完成");}
        catch(Exception e){
            e.printStackTrace();
        }
    }

11. goeasy异步调用
    goeasy：网址：https://www.goeasy.io/
    加依赖

    <!-- goeasy 异步 -->
    <dependency>
        <groupId>io.goeasy</groupId>
        <artifactId>goeasy-sdk</artifactId>
        <version>0.3.16</version>
    </dependency>

    在 goeasy创建应用，获取Common key及hangzhou.goeasy.io

    在微信支付通知的控制层新增

    GoEasy goEasy = new GoEasy( "http://rest-hangzhou.goeasy.io/v2/pubsub/publish", "BC-3d456eb942cc4926b807cdb77dfb5216");
    goEasy.publish("wxpay", "success");

    下单页面

    <script src="http://hangzhou.goeasy.io/goeasy.js"></script>
    <script>
        //初始化
        var goeasy  = new GoEasy({
            host:"hangzhou.goeasy.io",  //若是新加坡区域：singapore.goeasy.io
            appkey:"BC-3d456eb942cc4926b807cdb77dfb5216",
            modules:['pubsub']//根据需要，传入‘pubsub’或'im’，或数组方式同时传入
        })
        var pubsub = goeasy.pubsub;
        goeasy.subscribe({
            channel: "wxpay",//替换为您自己的channel
            onMessage: function (message) {
                alert("收到："+message.content);
                console.log("Channel:" + message.channel + " content:" + message.content);
            }
        });
    </script>