微信支付——微信退款实战教程（Java版）

package com.cy.xgsm.controller;

import java.math.BigDecimal;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.ResponseBody;

import org.springframework.web.bind.annotation.RestController;

import com.cy.xgsm.common.Result;

import com.github.binarywang.wxpay.bean.request.WxPayRefundV3Request;

import com.github.binarywang.wxpay.bean.result.WxPayRefundV3Result;

import com.github.binarywang.wxpay.service.WxPayService;

/**

 *

 * @author Dylan

 *

 */

@RestController

public class WxPayController {

@Autowired

@Qualifier("wxPayService")

private WxPayService wxPayService;

    /**

     * 申请退款

     * @param orderNo 充值单号

     * @param amount 退款金额

     */

    @GetMapping("/refundV3/nativePay")

@ResponseBody

    public Result rebackPay(String orderNo,BigDecimal amount){

     Result res = new Result();

     //微信支付-申请退款请求参数

WxPayRefundV3Request request = new WxPayRefundV3Request();

WxPayRefundV3Request.Amount am =跟单网gendan5.com new WxPayRefundV3Request.Amount();

am.setTotal(amount.multiply(new BigDecimal(100)).intValue());//原订单金额

//退款币种,符合ISO 4217标准的三位字母代码，目前只支持人民币：CNY。

am.setCurrency("CNY");

//退款金额 注意：退款金额，单位为分，只能为整数，不能超过原订单支付金额。

am.setRefund(amount.multiply(new BigDecimal(100)).intValue());

//金额信息

request.setAmount(am);

//transaction_id:微信支付订单号

request.setTransactionId(orderNo);

//商户订单号

request.setOutRefundNo("return_"+orderNo);

WxPayRefundV3Result result;

try {

//调用微信V3退款API

result = wxPayService.refundV3(request);

String status = result.getStatus();

switch (status) {

case "SUCCESS":

res.success("退款成功");

break;

case "CLOSED":

res.success("退款关闭");

break;

case "PROCESSING":

res.success("退款处理中");

break;

case "ABNORMAL":

res.success("退款异常");

break;

default:

res.error("受理失败");

break;

}

res.setAtt(result);

} catch (Exception e) {

res.error("申请退款失败，"+e.getMessage());

}

return res;

    }

}