支付总结

支付常用的是微信支付和支付宝支付。二者正式版皆须应用注册和审核。微信人工审核，支付宝机器审核，快于微信。支付宝有沙箱环境，便于调试后正式使用，微信没有。沙箱环境调试会对应使用沙箱版支付宝APP。

1、微信支付：
https://pay.weixin.qq.com/wiki/doc/api/index.html
支付宝支付：
https://docs.open.alipay.com/catalog
支付宝开放平台：
https://open.alipay.com/platform/manageHome.htm
微信和支付宝支付参考：
https://ask.dcloud.net.cn/article/458
个人支付免签系统API版本：
https://github.com/yioMe/nodejs_wx_aipay_api
2、支付宝支付-沙箱环境：
https://openhome.alipay.com/platform/appDaily.htm
3、支付宝沙箱版APP登陆，用支付宝支付-沙箱环境中的沙箱账号的商家账号和登陆密码。
4、手机网站支付结果异步通知
https://docs.open.alipay.com/203/105286/

public class AlipayConfig {
    public static String SERVER_ADDRESS = "";
    /**
     * 商户appid
     */
    public static String APP_ID = "";
    /**
     * 商户私钥（pkcs8格式）
     */
    public static String APP_PRIVATE_KEY = "";
    /**
     * 服务器异步通知页面路径
     * 需http://或者https://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问
     */
    public static String NOTIFY_URL = SERVER_ADDRESS + "payNotify";
    /**
     * 页面跳转同步通知页面路径
     * 需http://或者https://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问 商户可以自定义同步跳转地址
     */
    public static String RETURN_URL = SERVER_ADDRESS + "payReturn.html";
    /**
     * 请求网关地址（正式环境或沙箱环境）
     */
    public static String GATEWAY_URL = "https://openapi.alipaydev.com/gateway.do";
    /**
     * 编码
     */
    public static String CHARSET = "UTF-8";
    /**
     * 返回格式
     */
    public static String FORMAT = "json";
    /**
     * 支付宝公钥
     */
    public static String ALIPAY_PUBLIC_KEY = "";
    /**
     * 日志记录目录
     */
    public static String LOG_PATH = System.getProperty("user.dir") + "log";
    /**
     * 标志类型
     */
    public static String SIGN_TYPE = "RSA2";
    /**
     * 延时
     */
    public static String TIMEOUT_EXPRESS = "2m";
    /**
     * 商品编码
     */
    public static String PRODUCT_CODE = "FAST_INSTANT_TRADE_PAY";
    /**
     * 退出地址
     */
    public static String QUIT_URL = SERVER_ADDRESS + "quit.html";
}

@GetMapping("order/pay")
    @ResponseBody
    public String pay(@RequestParam("orderNumber") String orderNumber, @RequestParam("subject") String subject, @RequestParam("amount") String amount,
                      @RequestParam("orderDescription") String orderDescription) {

        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.GATEWAY_URL, AlipayConfig.APP_ID, AlipayConfig.APP_PRIVATE_KEY, AlipayConfig.FORMAT, AlipayConfig.CHARSET, AlipayConfig.ALIPAY_PUBLIC_KEY, AlipayConfig.SIGN_TYPE);
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.RETURN_URL);
        alipayRequest.setNotifyUrl(AlipayConfig.NOTIFY_URL);
        AlipayTradeWapPayModel model = new AlipayTradeWapPayModel();
        model.setOutTradeNo(orderNumber);
        model.setSubject(subject);
        model.setTotalAmount(amount);
        model.setBody(orderDescription);
        model.setTimeoutExpress(AlipayConfig.TIMEOUT_EXPRESS);
        model.setProductCode(AlipayConfig.PRODUCT_CODE);
        model.setQuitUrl(AlipayConfig.QUIT_URL);
        alipayRequest.setBizModel(model);
        String form;
        try {
            AlipayTradePagePayResponse response = alipayClient.pageExecute(alipayRequest);
            log.debug(response.getTradeNo());
            form = alipayClient.pageExecute(alipayRequest).getBody();
            log.debug(form);
            return form;
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }

        return null;
    }

    @PostMapping("payNotify")
    @ResponseBody
    public void notify(@RequestParam int clientId, @RequestParam String orderNumber, @RequestParam String aliPayId,
                       @RequestParam double amount, @RequestParam String orderDescription, @RequestParam String city) {
        log.debug("支付宝异步通知");
    }