java实现支付宝扫码付款

朴灿烈づ我的快乐病毒、 2023-06-18 05:51 54阅读 0赞

最近做了支付宝扫码付款：废话不多说：下面开始：

1：开通支付宝商家，登录支付宝开放平台，创建应用-

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xvdmVib3NvbQ_size_16_color_FFFFFF_t_70][]

2、设置应用的私钥和公钥，每个应用都有自己的私钥和公钥。不能混用哦

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xvdmVib3NvbQ_size_16_color_FFFFFF_t_70 1][]

3、把应用的appid、私钥、公钥和支付宝的公钥、网关URL 写到配置文件或是数据库。供程序调用

4编写zfb支付service类

首先引入jar包

<alipay-version>3.7.73.ALL</alipay-version>
    <dependency>
    	  <groupId>com.alipay.sdk</groupId>
    	  <artifactId>alipay-sdk-java</artifactId>
    	  <version>${alipay-version}</version>
    	</dependency>

private static AlipayClient client = null;
    	static {
    		 client = new DefaultAlipayClient(ORDER_URL,APPID,ICU_PRIVATE_KEY,"JSON","utf-8",ALIPAY_PUBLICKEY,AlipayConstants.SIGN_TYPE_RSA2);
    	}
    	
    	
    	/**
    	 * 获取支付二维码
    	 * @param clieid
    	 * @param proid
    	 * @param itemid
    	 * @param visitid
    	 * @param lang
    	 * @throws Exception
    	 * @author Mr G
    	 */
    	public void getQrcode(String clieid,String proid,String visitid,String itemid,String lang) throws Exception{
    		JSONObject busobj = new JSONObject();
            busobj.put("clieid", clieid);
            busobj.put("proid", proid);
            busobj.put("visitid", visitid);
    		PayOrderSubmit neworder = payOrderSubmitService.createOrder(clieid,itemid,busobj.toString(),lang,PayConst.PAYTYPE_ALI_SAOMAPAY);
    		Map<String,Object> para = new HashMap<>();
    		para.put("out_trade_no",neworder.getPayid());
    		para.put("subject",neworder.getExpenote());//订单标题
    		double paymoney = neworder.getPaymoney()/100d;
    		para.put("total_amount",String.valueOf(paymoney));//订单金额 单位元
    		// 卖家支付宝账号ID，用于支持一个签约账号下支持打款到不同的收款账号，(打款到sellerId对应的支付宝账号)
            // 如果该字段为空，则默认为与支付宝签约的商户的PID，也就是appid对应的PID
    		String sellerId = "";
            para.put("body","购买"+neworder.getExpenote()+paymoney+"元");//购买商品3件共20.00元";
            // 支付超时，定义为120分钟
            String timeoutExpress = "120m";//120m
            //允许的最晚付款时间，逾期将关闭交易。取值范围：1m～15d。m-分钟，h-小时，d-天，1c-当天（1c-当天的情况下，无论交易何时创建，都在0点关闭）。 
            para.put("timeout_express", timeoutExpress);
            
            para.put("operator_id","test_operator_id");//商户操作员编号
            para.put("store_id", clieid);//store_id商户门店编号
            para.put("terminal_id", visitid);//商户机具终端编号
            
           // para.put("business_params", busobj);
           // para.put("extend_params", busobj);
            
            // 商品明细列表，需填写购买商品详细信息，
    //        List<GoodsDetail> goodsDetailList = new ArrayList<GoodsDetail>();
            // 创建一个商品信息，参数含义分别为商品id（使用国标）、名称、单价（单位为分）、数量，如果需要添加商品类别，详见GoodsDetail
    //        GoodsDetail goods1 = GoodsDetail.newInstance(outTradeNo, subject, 1, 1);
            // 创建好一个商品后添加至商品明细列表
    //        goodsDetailList.add(goods1);
            AlipayTradePrecreateRequest request = new AlipayTradePrecreateRequest();
            request.setBizContent(JsonUtil.objToJson(para));
            request.setNotifyUrl(NOTIFYURL);
            AlipayTradePrecreateResponse response = client.execute(request);
            String body = response.getBody();
            log.debug("ali qrcode result:"+body);
            JSONObject jsonbody = JSONObject.parseObject(body);
            JSONObject tradeResp = jsonbody.getJSONObject("alipay_trade_precreate_response");
            String code = tradeResp.getString("code");
            if("10000".equals(code)) {
            	String code_url = tradeResp.getString("qr_code");
            	log.debug("ali-code_url="+code_url);
            	String base64 = QrcodeUtil.generateBase64Img(code_url,LOGOPATH);
                //根据业务需要可以把base64直接扔给前台src
            	//TODO
            	if(!b) {
            		log.error("支付宝推送二维码失败：[clieid:{},proid：{},itemid:{},visitid:{}]",clieid,proid,itemid,visitid);
            	}
            }else {
            	log.error("支付宝获取二维码失败：{},[clieid:{},proid:{},itemid:{},visitid:{}]",tradeResp.getString("sub_msg"),clieid,proid,itemid,visitid);
            }
            
    	}

在回调接口里想着在预下单时设置几个业务上的id值，然后再回调接口里使用，结果sdk里没有找到，后来干脆再数据库里查询了一下。有知道的伙伴可以留言说下。

5、用户扫码后使用支付宝支付完，还需编写回调接口。如下；

@SuppressWarnings("unused")
    	public void payNotify() throws Exception {
    		Map<String, String> notifyMap = notifyMap();
    		boolean checkV1 = AlipaySignature.rsaCheckV1(notifyMap, ALIPAY_PUBLICKEY, "utf-8" ,AlipayConstants.SIGN_TYPE_RSA2);
    		String replymsg="";
    		if(checkV1) {
    			//获取订单号
    			String out_trade_no = notifyMap.get("out_trade_no");
    			String buyer_logon_id = notifyMap.get("buyer_logon_id");//lov***@163.com
    			String total_amount = notifyMap.get("total_amount");
    			String seller_id = notifyMap.get("seller_id");
    			String app_id = notifyMap.get("app_id");
    			PayOrderSubmit submit = payOrderSubmitService.getOrderByPayid(out_trade_no);
    			double paymoney = submit.getPaymoney()/100d;
    			String ordernote = submit.getOrdernote();
    			JSONObject noteobj = JSONObject.parseObject(ordernote);
    			String clieid = noteobj.getString("clieid");
    			String proid = noteobj.getString("proid");
    			String visitid = noteobj.getString("visitid");
    			if(submit!=null) {
    				String trade_status = notifyMap.get("trade_status");
    				if("TRADE_SUCCESS".equals(trade_status)) {
    					if(total_amount.equals(String.valueOf(paymoney)) && PID.equals(seller_id)
    							&& APPID.equals(app_id)) {//校验数据准确性
    						
    						replymsg=NOTIFY_SUCCESS;
    						log.info("支付宝支付成功：clieid:{},proid:{},visitid:{},订单号：{}",clieid,proid,visitid,out_trade_no);
    							//TODO log
    					}else {
    						log.error("本条通知是异常通知：[appid:{},pid:{},支付金额：{},订单号:{}]",app_id,seller_id,total_amount,out_trade_no);
    					}
    				}	
    			}else {
    				replymsg = NOTIFY_FAIL;
    				log.error("支付宝通知-未获取到相应订单，[订单号：{}]",out_trade_no);
    			}
    		}else {
    			replymsg=NOTIFY_FAIL;
    			log.error("支付宝通知验签失败。");
    		}
    		ContextUtil.getResponse().getWriter().write(replymsg);
    	}
    
    
    @SuppressWarnings("rawtypes")
    	private Map<String,String> notifyMap() {
    		HttpServletRequest req = ContextUtil.getRequest();
    		Map<String,String> para = new HashMap<>();
    		Enumeration names = req.getParameterNames();
    		System.out.println("notifymap-----------------------------------");
    		while(names.hasMoreElements()) {
    			String k = (String) names.nextElement();
    			para.put(k, req.getParameter(k));
    			System.out.println(k+" = "+req.getParameter(k));
    		}
    		return para;
    	}

6:后记：官方给的demo是在sdk的基础上又封装了一层，看的我眼花，所以就没采用demo写法。

[https://docs.open.alipay.com/399/106843/][https_docs.open.alipay.com_399_106843]

[https://docs.open.alipay.com/api\_1/alipay.trade.precreate][https_docs.open.alipay.com_api_1_alipay.trade.precreate]

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[https_docs.open.alipay.com_399_106843]: https://docs.open.alipay.com/399/106843/
[https_docs.open.alipay.com_api_1_alipay.trade.precreate]: https://docs.open.alipay.com/api_1/alipay.trade.precreate