java订单退款怎么实现 java支付宝退款流程

1、应用场景

当交易发生之后一段时间内，由于买家或者卖家的原因需要退款时，卖家可以通过退款接口将支付款退还给买家，支付宝将在收到退款请求并且验证成功之后，按照退款规则将支付款按原路退到买家帐号上。 交易超过约定时间（签约时设置的可退款时间）的订单无法进行退款 支付宝退款支持单笔交易分多次退款，多次退款需要提交原支付订单的商户订单号和设置不同的退款单号。一笔退款失败后重新提交，要采用原来的退款单号。总退款金额不能超过用户实际支付金额。

2、公共参数

2.1请求地址

环境	HTTPS请求地址
正式环境	https://openapi.alipay.com/gateway.do

2.2公共请求参数

参数	类型	是否必填	最大长度	描述	示例值
app_id	String	是	32	支付宝分配给开发者的应用ID	2014072300007148
method	String	是	128	接口名称	alipay.trade.refund
format	String	否	40	仅支持JSON	JSON
charset	String	是	10	请求使用的编码格式，如utf-8,gbk,gb2312等	utf-8
sign_type	String	是	10	商户生成签名字符串所使用的签名算法类型，目前支持RSA2和RSA，推荐使用RSA2	RSA2
sign	String	是	344	商户请求参数的签名串，详见签名	详见示例
timestamp	String	是	19	发送请求的时间，格式"yyyy-MM-dd HH:mm:ss"	2014-07-24 03:07:50
version	String	是	3	调用的接口版本，固定为：1.0	1.0
app_auth_token	String	否	40	详见应用授权概述
biz_content	String	是		请求参数的集合，最大长度不限，除公共参数外所有请求参数都必须放在这个参数中传递，具体参照各产品快速接入文档

3、请求参数

参数	类型	是否必填	最大长度	描述	示例值
out_trade_no	String	特殊可选	64	订单支付时传入的商户订单号,不能和 trade_no同时为空。	20150320010101001
trade_no	String	特殊可选	64	支付宝交易号，和商户订单号不能同时为空	2014112611001004680073956707
refund_amount	Price	必选	9	需要退款的金额，该金额不能大于订单金额,单位为元，支持两位小数	200.12
refund_currency	String	可选	8	订单退款币种信息	USD
refund_reason	String	可选	256	退款的原因说明	正常退款
out_request_no	String	可选	64	标识一次退款请求，同一笔交易多次退款需要保证唯一，如需部分退款，则此参数必传。	HZ01RF001
operator_id	String	可选	30	商户的操作员编号	OP001
store_id	String	可选	32	商户的门店编号	NJ_S_001
terminal_id	String	可选	32	商户的终端编号	NJ_T_001
goods_detail	GoodsDetail[]	可选		退款包含的商品列表信息，Json格式。  其它说明详见：“商品明细说明”
refund_royalty_parameters	OpenApiRoyaltyDetailInfoPojo[]	可选		退分账明细信息

4、公共响应参数

参数	类型	是否必填	最大长度	描述	示例值
code	String	是	-	网关返回码,详见文档	40004
msg	String	是	-	网关返回码描述,详见文档	Business Failed
sub_code	String	否	-	业务返回码，参见具体的API接口文档	ACQ.TRADE_HAS_SUCCESS
sub_msg	String	否	-	业务返回码描述，参见具体的API接口文档	交易已被支付
sign	String	是	-	签名,详见文档	DZXh8eeTuAHoYE3w1J+POiPhfDxOYBfUNn1lkeT/V7P4zJdyojWEa6IZs6Hz0yDW5Cp/viufUb5I0/V5WENS3OYR8zRedqo6D+fUTdLHdc+EFyCkiQhBxIzgngPdPdfp1PIS7BdhhzrsZHbRqb7o4k3Dxc+AAnFauu4V6Zdwczo=

5、响应参数

参数	类型	是否必填	最大长度	描述	示例值
trade_no	String	必填	64	2013112011001004330000121536	支付宝交易号
out_trade_no	String	必填	64	商户订单号	6823789339978248
buyer_logon_id	String	必填	100	用户的登录id	159****5620
fund_change	String	必填	1	本次退款是否发生了资金变化	Y
refund_fee	Price	必填	11	退款总金额	88.88
refund_currency	String	选填	8	退款币种信息	USD
gmt_refund_pay	Date	必填	32	退款支付时间	2014-11-27 15:45:57
refund_detail_item_list	TradeFundBill	选填		退款使用的资金渠道
store_name	String	选填	512	交易在支付时候的门店名称	望湘园联洋店
buyer_user_id	String	必填	28	买家在支付宝的用户id	2088101117955611
present_refund_buyer_amount	String	选填	11	本次退款金额中买家退款金额	88.88
present_refund_discount_amount	String	选填	11	本次退款金额中平台优惠退款金额	88.88
present_refund_mdiscount_amount	String	选填	11	本次退款金额中商家优惠退款金额	88.88

6、请求示例

AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");
AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();
request.setBizContent("{" +
"\"out_trade_no\":\"20150320010101001\"," +
"\"trade_no\":\"2014112611001004680073956707\"," +
"\"refund_amount\":200.12," +
"\"refund_currency\":\"USD\"," +
"\"refund_reason\":\"正常退款\"," +
"\"out_request_no\":\"HZ01RF001\"," +
"\"operator_id\":\"OP001\"," +
"\"store_id\":\"NJ_S_001\"," +
"\"terminal_id\":\"NJ_T_001\"," +
"      \"goods_detail\":[{" +
"        \"goods_id\":\"apple-01\"," +
"\"alipay_goods_id\":\"20010001\"," +
"\"goods_name\":\"ipad\"," +
"\"quantity\":1," +
"\"price\":2000," +
"\"goods_category\":\"34543238\"," +
"\"body\":\"特价手机\"," +
"\"show_url\":\"http://www.alipay.com/xxx.jpg\"" +
"        }]," +
"      \"refund_royalty_parameters\":[{" +
"        \"royalty_type\":\"transfer\"," +
"\"trans_out\":\"2088101126765726\"," +
"\"trans_out_type\":\"userId\"," +
"\"trans_in_type\":\"userId\"," +
"\"trans_in\":\"2088101126708402\"," +
"\"amount\":0.1," +
"\"amount_percentage\":100," +
"\"desc\":\"分账给2088101126708402\"" +
"        }]" +
"  }");
AlipayTradeRefundResponse response = alipayClient.execute(request);
if(response.isSuccess()){
System.out.println("调用成功");
} else {
System.out.println("调用失败");
}

7、响应示例

{
    "alipay_trade_refund_response": {
        "code": "10000",
        "msg": "Success",
        "trade_no": "支付宝交易号",
        "out_trade_no": "6823789339978248",
        "buyer_logon_id": "159****5620",
        "fund_change": "Y",
        "refund_fee": 88.88,
        "refund_currency": "USD",
        "gmt_refund_pay": "2014-11-27 15:45:57",
        "refund_detail_item_list": [
            {
                "fund_channel": "ALIPAYACCOUNT",
                "amount": 10,
                "real_amount": 11.21,
                "fund_type": "DEBIT_CARD"
            }
        ],
        "store_name": "望湘园联洋店",
        "buyer_user_id": "2088101117955611",
        "present_refund_buyer_amount": "88.88",
        "present_refund_discount_amount": "88.88",
        "present_refund_mdiscount_amount": "88.88"
    },
    "sign": "ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE"
}

8、异常示例

{
    "alipay_trade_refund_response": {
        "code": "20000",
        "msg": "Service Currently Unavailable",
        "sub_code": "isp.unknow-error",
        "sub_msg": "系统繁忙"
    },
    "sign": "ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE"
}

9、代码实现 

9.1基础类

AlipayConfig配置类，主要包含支付宝的配置信息

package com.hisap.xql.api.common.ali;
 
/**
 * @Author: QijieLiu
 * @Description: 支付宝配置信息
 * @Date: Created in 10:39 2018/8/20
 */
public class AlipayConfig {
	public static String APP_ID = "xxxxxx";
	public static String APP_PRIVATE_KEY = "xxxxxx";//APP私钥
	public static String APP_PUBLIC_KEY = "xxxxxx";//APP公钥
	public static String ALIPAY_PUBLIC_KEY = "xxxxxx";//支付宝公钥
	public static String UNIFIEDORDER_URL = "https://openapi.alipay.com/gateway.do";
        public static String NOTIFY_URL = "http://xxx.xxx.xxx.xxx/XqlApi/xxx/paynotify";
	public static String CHARSET = "UTF-8";
	public static String FORMAT = "json";
	public static String SIGNTYPE = "RSA2";
	public static String TIMEOUT_EXPRESS = "30m";
}

AlipayRefund支付宝退款实体类

package com.hisap.xql.api.common.ali;

/**
 * @Author: QijieLiu
 * @Description: 支付宝退款类
 * @Date: Created in 18:57 2018/8/20
 */
public class AlipayRefund {
    private String out_trade_no;//必须 商户订单号
    private String trade_no;//必须 支付宝交易号
    private String refund_amount;//必须 退款金额
    private String refund_reason;//可选 代表 退款的原因说明
    private String out_request_no;//可选 标识一次退款请求，同一笔交易多次退款需要保证唯一（就是out_request_no在2次退款一笔交易时，要不一样），如需部分退款，则此参数必传
    private String operator_id;//可选 代表 商户的操作员编号
    private String store_id;//可选 代表 商户的门店编号
    private String terminal_id;//可选 代表 商户的终端编号

    public String getOut_trade_no() {
        return out_trade_no;
    }

    public void setOut_trade_no(String out_trade_no) {
        this.out_trade_no = out_trade_no;
    }

    public String getTrade_no() {
        return trade_no;
    }

    public void setTrade_no(String trade_no) {
        this.trade_no = trade_no;
    }

    public String getRefund_amount() {
        return refund_amount;
    }

    public void setRefund_amount(String refund_amount) {
        this.refund_amount = refund_amount;
    }

    public String getRefund_reason() {
        return refund_reason;
    }

    public void setRefund_reason(String refund_reason) {
        this.refund_reason = refund_reason;
    }

    public String getOut_request_no() {
        return out_request_no;
    }

    public void setOut_request_no(String out_request_no) {
        this.out_request_no = out_request_no;
    }

    public String getOperator_id() {
        return operator_id;
    }

    public void setOperator_id(String operator_id) {
        this.operator_id = operator_id;
    }

    public String getStore_id() {
        return store_id;
    }

    public void setStore_id(String store_id) {
        this.store_id = store_id;
    }

    public String getTerminal_id() {
        return terminal_id;
    }

    public void setTerminal_id(String terminal_id) {
        this.terminal_id = terminal_id;
    }
}

ResponseJson基础类，主要与APP前端进行交互

package com.hisap.xql.api.common.bean;
 
public class ResponseJson {
	// 结果码
	private String code;
	// 结果说明
	private String message;
	// 内容
	private Object data;
 
	public String getCode() {
		return code;
	}
 
	public void setCode(String code) {
		this.code = code;
	}
 
	public String getMessage() {
		return message;
	}
 
	public void setMessage(String message) {
		this.message = message;
	}
 
	public Object getData() {
		return data;
	}
 
	public void setData(Object data) {
		this.data = data;
	}
 
}

9.1业务类

这里我就只贴出Service层代码，其余代码都类似，参数这里只需要两个，一个是支付宝交易号，还有一个是退款金额，注意一下这里的退款金额单位是元，而微信是分。当然这里也可以添加对应的业务逻辑，我们这里不需要。

package com.hisap.xql.api.service.impl;

import java.math.BigDecimal;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.domain.AlipayTradeAppPayModel;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradeAppPayRequest;
import com.alipay.api.request.AlipayTradeRefundRequest;
import com.alipay.api.response.AlipayTradeAppPayResponse;
import com.alipay.api.response.AlipayTradeRefundResponse;
import com.hisap.xql.api.common.ali.AlipayConfig;
import com.hisap.xql.api.common.ali.AlipayRefund;
import com.hisap.xql.api.common.bean.ResponseJson;
import com.hisap.xql.api.common.constant.CodeMsg;
import com.hisap.xql.api.common.utils.Collections3;
import com.hisap.xql.api.common.utils.CommonUtil;
import com.hisap.xql.api.common.utils.StringUtil;
import com.hisap.xql.api.common.utils.VersionUtil;
import com.hisap.xql.api.dao.XqlOrderGoodsMapper;
import com.hisap.xql.api.model.XqlOrder;
import com.hisap.xql.api.model.XqlOrderGoods;
import com.hisap.xql.api.model.XqlOrderGoodsExample;
import com.hisap.xql.api.model.XqlVersion;
import com.hisap.xql.api.service.AliPayService;
import com.hisap.xql.api.service.CommonService;
import com.hisap.xql.api.service.ErpInterfaceService;
import com.hisap.xql.api.service.WeChatPayService;
import com.hisap.xql.api.service.XqlOrderService;

@Service
public class AliPayServiceImpl implements AliPayService {
	private static final Logger logger = LoggerFactory
			.getLogger(AliPayServiceImpl.class);
	
	@Autowired
	CommonService commonService;

	@Autowired
	XqlOrderService xqlOrderServiceImpl;

	@Autowired
	XqlOrderGoodsMapper xqlOrderGoodsMapper;

	@Autowired
	WeChatPayService weChatPayServiceImpl;
	
	@Autowired
	ErpInterfaceService erpInterfaceServiceImpl;


	@Override
	public ResponseJson refund(String trade_no, BigDecimal refund_amount)
			throws Exception {
		ResponseJson responseJson = new ResponseJson();
		try{
			// 实例化客户端
			AlipayClient alipayClient = new DefaultAlipayClient(
					AlipayConfig.UNIFIEDORDER_URL, AlipayConfig.APP_ID,
					AlipayConfig.APP_PRIVATE_KEY, AlipayConfig.FORMAT,
					AlipayConfig.CHARSET, AlipayConfig.ALIPAY_PUBLIC_KEY,
					AlipayConfig.SIGNTYPE);
			AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();
			AlipayRefund alipayRefund = new AlipayRefund();
			alipayRefund.setTrade_no(trade_no);
			alipayRefund.setRefund_amount(refund_amount.toString());
			request.setBizContent(JSONObject.toJSONString(alipayRefund));
			AlipayTradeRefundResponse response = alipayClient.execute(request);
			if(response.getCode().equals("10000")){
				responseJson = CommonUtil.createResponseJson(
						CodeMsg.SUCCESS_CODE, CodeMsg.SUCCESS_MSG, response);
			}else{
				responseJson = CommonUtil.createResponseJson(
						response.getSubCode(), response.getSubMsg(), response);
			}
		}catch(Exception e){
			e.printStackTrace();
			logger.error("支付宝退款接口服务端异常,异常信息---" + e.getMessage(), e);
			return CommonUtil.createResponseJson(
					CodeMsg.SERVER_ERROR_CODE, CodeMsg.SERVER_ERROR_MSG, new JSONObject());
		}
		
		return responseJson;
	}
	
	public static void main(String[] args) throws Exception {
		String trade_no = "2018083021001004540585684766";
		BigDecimal refund_amount = new BigDecimal("0.01");
		ResponseJson responseJson = new ResponseJson();
		
		AliPayServiceImpl aa = new AliPayServiceImpl();
		responseJson = aa.refund(trade_no,refund_amount);
		System.out.println(JSON.toJSONString(responseJson, SerializerFeature.WriteNullStringAsEmpty));
	}

}