springboot 支付宝支付业务网页端扫码

AlipayClient alipayClient = new DefaultAlipayClient(
　　　　"https://openapi.alipay.com/gateway.do",
        appID,//后台的appID
　　　　 privateKey, //应用私钥
　　　　 "json",
　　　　 charset,//UTF-8
　　　　 publicKey,//支付宝公钥
　　　　 signType//RSA2
);
AlipayTradePagePayRequest payRequest = new AlipayTradePagePayRequest();
payRequest.setReturnUrl("https://xxx.xxx.xxx/xxx/api");//支付宝唤起你的页面
payRequest.setNotifyUrl("https://xxx.xxx.xxx/xxx/xxx/aliCall");//回调接口
JSONObject bizContent = new JSONObject();
//自己的单号
bizContent.put("out_trade_no", itrOrderId);
//充值金额
bizContent.put("total_amount", 10);
bizContent.put("subject", "支付时候显示的标题");
bizContent.put("product_code", "FAST_INSTANT_TRADE_PAY");
payRequest.setBizContent(bizContent.toString());

AlipayTradePagePayResponse response = alipayClient.pageExecute(payRequest);

@RequestMapping("/aliCall")
public void aliCall(HttpServletRequest request, HttpServletResponse response, AliReturnPayBean returnPay) throws IOException {
    response.setContentType("type=text/html;charset=UTF-8");
    log.error("支付宝的的回调函数被调用");
    if (!PayConfig.checkSign(request)) {
        log.error("验签失败");
        response.getWriter().write("failture");
        return;
    }
    if (returnPay == null) {
        log.error("支付宝的returnPay返回为空");
        response.getWriter().write("success");
        return;
    }
    log.error("支付宝的returnPay" + returnPay);
    // 表示支付成功状态下的操作
    if (returnPay.getTrade_status().equals("TRADE_SUCCESS")) {
        log.error("支付宝的支付状态为TRADE_SUCCESS");
        String out_trade_no = returnPay.getOut_trade_no();
        //进行自己的业务逻辑
    }
    response.getWriter().write("success");
}

public class PayConfig {
    // 请填写您的AppId，例如：2019091767145019（必填）
    private static final String appID = "";
    //应用私钥，这里修改生成的私钥即可（必填）
    private static final String privateKey = "";
    //支付宝公钥，而非应用公钥（必填）
    public static final String publicKey = "";
    //默认即可（必填）
    public static final String charset = "utf-8";
    //默认即可（必填）
    public static final String signType = "RSA2";
//    @Bean
    public AlipayClient alipayClient(){
        // 沙箱环境使用https://openapi.alipaydev.com/gateway.do
        // 线上环境使用https://openapi.alipay.com/gateway.do
        return new DefaultAlipayClient("https://openapi.alipaydev.com/gateway.do",
                appID, privateKey, "json", charset, publicKey, signType);
    }
    /**
     * 验签，是否正确
     */
    public static boolean checkSign(HttpServletRequest request){
        Map<String, String[]> requestMap = request.getParameterMap();
        Map<String, String> paramsMap = new HashMap<>();
        requestMap.forEach((key, values) -> {
            String strs = "";
            for(String value : values) {
                strs = strs + value;
            }
            System.out.println(key +"===>"+strs);
            paramsMap.put(key, strs);
        });
        System.out.println();
        //调用SDK验证签名
        try {
            return AlipaySignature.rsaCheckV1(paramsMap, PayConfig.publicKey, PayConfig.charset, PayConfig.signType);
        } catch (AlipayApiException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            System.out.println("*********************验签失败********************");
            return false;
        }
    }

}