2018-11-14 11:55:10.850  WARN 21863 --- [nio-8080-exec-5] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.http.converter.HttpMessageNotWritableException: No converter found for return value of type: class com.jpay.vo.AjaxResult]
2018-11-14 11:55:10.853  WARN 21863 --- [nio-8080-exec-5] o.s.web.servlet.PageNotFound             : No mapping found for HTTP request with URI [/error/500.html] in DispatcherServlet with name 'dispatcherServlet'

		String encoding = "UTF-8";
		logger.info("返回报文中encoding=[" + encoding + "]");
		String readData = HttpKit.readData(request);
		Map<String, String> respParam = getAllRequestParamToMap(readData);`

 /**
	 * 退款
	 */
	@RequestMapping(value = "/tradeRefund")
	@ResponseBody
	public String tradeRefund() {

		try {
			AlipayTradeRefundModel model = new AlipayTradeRefundModel();
			model.setOutTradeNo("042518161915246");//商户订单号		 
			model.setTradeNo("2018042521001004610572946934");//支付宝订单号
			model.setRefundAmount("0.01");
			model.setRefundReason("正常退款");
			
			AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do",AliPayApiConfigKit.getAliPayApiConfig().getAppId(),
					AliPayApiConfigKit.getAliPayApiConfig().getPrivateKey(),"json","GBK",
					AliPayApiConfigKit.getAliPayApiConfig().getAlipayPublicKey(),"RSA2");
			AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();
			request.setBizModel(model);
			AlipayTradeRefundResponse response = alipayClient.execute(request);
			//return response.getBody();
			return AliPayApi.tradeRefund(model);
		} catch (AlipayApiException e) {
			e.printStackTrace();
		}
		return null;
	}

{
alipay_trade_refund_response: {
code: "40002",
msg: "Invalid Arguments",
sub_code: "isv.invalid-app-id",
sub_msg: "无效的AppID参数"
}
}

	/**
	 * 退款
	 */
	@RequestMapping(value = "/tradeRefund")
	@ResponseBody
	public String tradeRefund() {
		try {
			AlipayTradeRefundModel model = new AlipayTradeRefundModel();
			model.setOutTradeNo("042518161915246");//商户订单号		 
			model.setTradeNo("2018042521001004610572946934");//支付宝订单号
			model.setRefundAmount("0.01");
			model.setRefundReason("正常退款");
			
			AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do",AliPayApiConfigKit.getAliPayApiConfig().getAppId(),
					AliPayApiConfigKit.getAliPayApiConfig().getPrivateKey(),"json","GBK",
					AliPayApiConfigKit.getAliPayApiConfig().getAlipayPublicKey(),"RSA2");
			AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();
			request.setBizModel(model);
			AlipayTradeRefundResponse response = alipayClient.execute(request);
			return response.getBody();
					//AliPayApi.tradeRefund(model);
		} catch (AlipayApiException e) {
			e.printStackTrace();
		}
		return null;
	}

{
alipay_trade_refund_response: {
code: "10000",
msg: "Success",
buyer_logon_id: "132****9268",
buyer_user_id: "2088702312871614",
fund_change: "N",
gmt_refund_pay: "2018-04-25 19:30:34",
out_trade_no: "042518161915246",
refund_fee: "0.01",
send_back_fee: "0.00",
trade_no: "2018042521001004610572946934"
},
sign: "VVkWEPT8p6nJ03SxUBPJGdU5DVT3xoloDPkpbdwKMBCI3uI3EEDNKw/WnOxN6xgdBpa2VONOsrKqmu3A+xHiLnasWuDd769FR1e0lnWLbG5BcF+ScNICpa3zTak1sDeXhfNSvtE6oGDo/vnogp135ZhfLi6cR8kIeawnOYC3dCD6mA90kFrlxG+N9Op59VPx0hq3DIbFGpbOnL8NXznIUOJj3Im8X7l1qe79yN0hCNeyzhTPabxhqRroJeqeKLv4Fsq3/ofv2UrG+uGexlv/Ekd/ASuI+oyHbs0kJX5wqplTjJUqj8BaBoxxzknbMmaX6g1JCE5FThGAo4abi3YjTQ=="
}