java对接支付宝（四）-即时到账无秘退款

左手的ㄟ右手 2022-06-01 09:05 159阅读 0赞

写在前面：看懂单笔交易关闭，首先得看完即时到账支付文章

### **1、即时到账退款接口** ###

Controller层代码

/**
    	 * @Description: 支付宝退款
    	 * @author lc
    	 * @param orderNo 订单号
    	 * @param refundAmount 退款金额
    	 * @param refundReason 退款原因
    	 * @return
    	 */
        @RequestMapping("/alipayTradeRefund")
        public void alipayTradeRefund() {
            try {
            	String orderNo = getString_UrlDecode_UTF8("orderNo");
            	String refundAmount = getString_UrlDecode_UTF8("refundAmount");
            	String refundReason = getString_UrlDecode_UTF8("refundReason");
            	String mId = getString_UrlDecode_UTF8("mId");
            	String refundType = getString_UrlDecode_UTF8("refundType");
            	String channel = getString_UrlDecode_UTF8("channel");
            	String source = getString_UrlDecode_UTF8("source");
            	orderNo = "1510795680802";
            	refundAmount = "0.1";
            	refundReason = "协商退款";
            	mId = "1";
            	String timestamp = DateUtil.format(new Date()); 
            	
            	// 把请求参数打包成数组
        		Map<String, String> sParaTemp = new HashMap<String, String>();
        		sParaTemp.put("service", "refund_fastpay_by_platform_nopwd");  
    //    		sParaTemp.put("out_trade_no", orderNo);
                    sParaTemp.put("partner", AlipayConfigUtil.partner);  
                    sParaTemp.put("_input_charset", AlipayConfigUtil.input_charset);  
                    sParaTemp.put("notify_url", AlipayConfigUtil.refund_notify_url);// 异步通知地址 
                    sParaTemp.put("dback_notify_url", AlipayConfigUtil.dback_notify_url);// 充值通知地址
                    sParaTemp.put("refund_date", timestamp);//退款请求时间  
                    sParaTemp.put("refund_reason", refundReason);//退款原因
    //              sParaTemp.put("trade_no", trade_no);
                    //退款批次号：回调的时候根据此字段修改退款申请的状态  
                    sParaTemp.put("batch_no",DateUtil.currentTime());
                    sParaTemp.put("batch_num", "1");//退款总笔数 
                    // 支付宝交易号 ^金额 ^协商退款
                    String detail_data = "2018012521001004290271183144" + "^" + refundAmount + "^" + refundReason;  
                    sParaTemp.put("detail_data", detail_data);//单笔数据集  
        		// 建立请求
    		String sHtmlText = AlipaySubmit.buildRequest("", "", sParaTemp);
    		System.out.println(sHtmlText);
            } catch (Exception e) {
             logger.error("alipayTradeRefund：支付宝退款异常！" + e.getMessage());
                  e.printStackTrace();
            }
        }

### **2、退款返回参数说明** ###

T：查询成功

F：查询失败

p：处理中

### **3、异步通知** ###

/** pc支付宝和微信退款异步通知
         * @param payWayCode
         * @param httpServletRequest
         * @param httpServletResponse
         * @throws Exception
         */
        @RequestMapping("/refundNotify/{payWayCode}")
        public void refundNotify(@PathVariable("payWayCode")String payWayCode , HttpServletRequest httpServletRequest , HttpServletResponse httpServletResponse) throws Exception {
            String encoding ="";
            Map<String , String> notifyMap = new HashMap<String , String >();
            Map<String, String[]> requestParams = httpServletRequest.getParameterMap();
            notifyMap = this.parseNotifyMsg(requestParams);
            String str = "fail";
            // 签名
            if(AlipayNotify.verify(resultMap) {        
                   logger.debug("支付宝签名成功返回结果：" + resultMap);
            	// 异步通知业务操作
    
                   // 回馈信息
                    str = "success";
            }else {
            	logger.debug("签名失败返回结果：" + notifyMap);
            }
            httpServletResponse.getWriter().print(str);
    }

/**
    	 * @Description: 解析支付宝发来的请求
    	 * @author lc
    	 * @param requestParams
    	 * @param    
    	 */
        public static Map<String , String> parseNotifyMsg(Map<String, String[]> requestParams){
            Map<String,String> params = new HashMap<String,String>();
            for (Iterator iter = requestParams.keySet().iterator(); iter.hasNext();) {
                String name = (String) iter.next();
                String[] values = requestParams.get(name);
                String valueStr = "";
                for (int i = 0; i < values.length; i++) {
                    valueStr = (i == values.length - 1) ? valueStr + values[i]: valueStr + values[i] + ",";
                }
                params.put(name, valueStr);
            }
            return params;
        }

注意：太懒了，没有写请求jsp，直接在请求地址写Controller层地址查询了。

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