关于java:阿里支付开发

gateway:"https://openapi.alipaydev.com/gateway.do"appId: "这是收款方的appid，采纳沙箱环境的话就是那个appid"privateKey: "利用私钥"format: "json"charset: "UTF-8"publicKey: "支付宝公钥"signType: "RSA2"return_url:"示意解决了业务当前胜利跳转的地址"notify_url:"响应的url，回调的controller，必须公网能拜访"

##### 支付宝二维码领取(可参考官网文档，曾经十分具体)

//支付宝退款接口，

public static String RefundOrder(TradeRefundVo tradeRefund) throws BizException {//TradeRefundVo 本人定义的实体类，可依据官网文档的api进行封装    AlipayConfig alipay = AlipayConfig.getInstance();    //实例化客户端    AlipayClient alipayClient = new DefaultAlipayClient(alipay.getGateway(), alipay.getAppId(),            alipay.getPrivateKey(), alipay.getFormat(),            alipay.getCharset(), alipay.getPublicKey(), alipay.getSignType());    AlipayTradeRefundRequest alipayTradeRefundRequest = new AlipayTradeRefundRequest();    AlipayTradeRefundModel alipayTradeRefundModel = new AlipayTradeRefundModel();    alipayTradeRefundModel.setOutTradeNo(tradeRefund.getOut_trade_no());    alipayTradeRefundModel.setRefundAmount(tradeRefund.getRefund_amount());    alipayTradeRefundModel.setRefundReason(tradeRefund.getTrade_reason());    alipayTradeRefundRequest.setBizModel(alipayTradeRefundModel);    try {        AlipayTradeRefundResponse response = alipayClient.execute(alipayTradeRefundRequest);        logger.info("response申请体的参数为{}" + response.getBody());        if (response.isSuccess()) {            System.out.println("退款接口调用胜利");        } else {            System.out.println("退款接口调用失败");        }        return response.getBody();    } catch (AlipayApiException e) {        e.printStackTrace();        logger.info("退款出现异常");        logger.error(e.getMessage(), e.fillInStackTrace());        throw new BizException(AlipayException);    }}