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微信支付公的众号支付和扫码支付

时间:2016-06-28 13:03:05      阅读:479      评论:0      收藏:0      [点我收藏+]

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公众号支付是手机端的微信公众号H5页面支付,这种支付方式必须是在微信内置浏览器发起。

扫码支付分为模式一和模式二,模式一主要为线下服务,该模式是先扫码,再生成订单,商户先为自己的商品生成二维码连接,然后用户扫码之后决定是否购买,二维码无过期时间,比如自动售卖机大多采用这种模式;模式二主要为线上电商服务,用户选择商品后生成订单,根据订单生成二维码,然后支付,该二维码为临时二维码。


开发流程

一、授权目录

官方文档说必须是精确目录,其实是二级或三级目录就可以了,太精确的可能还会出现不识别的情况。如果是扫码支付模式一还需要设置扫码支付回调URL

技术分享



二.统一下单

注意传入参数不要为null,尽量不要是空字符串,如果在没有抛出Exception的情况下支付失败,十有八九是参数导致的签名有问题,微信支付的签名规定的特别严格,必须按照微信给的规则来,建议第一次先用demo提供的签名方法,以后可以再修改。这里的appid就是支付所在的公众号的appid,openId是用户对应当前公众号的openId。

1、扫码支付模式二

扫码支付比较简单,可以直接通过url发起,传入统一下单参数,生成扫码支付的url。扫码支付的trade_type为NATIVE。

public void getCodeUrl(@PathVariable(value="tradeNo")String tradeNo, HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		//根据订单号获取订单详情
		OrderProduceBean order = reservationCarService.getTradebyNo(tradeNo);
		
		// 附加数据 原样返回
		String attach = "attach";
		// 总金额以分为单位,不带小数点
		String totalFee = TenpayUtil.getMoney(order.getTotalFee().toString());
		// 订单生成的机器 IP
		String spbill_create_ip = IpUtil.getIpAddr(request);
		// 这里notify_url是 支付完成后微信发给该链接信息,可以判断会员是否支付成功,改变订单状态等。
		String notify_url = TenPayConfig.notifyUrl;
		String trade_type = "NATIVE";
		// 商户号
		String mch_id = TenPayConfig.partner;
		// 随机字符串
		String nonce_str = TenpayUtil.getNonceStr();
		// 商品描述根据情况修改
		String body = order.getBody();
		// 商户订单号
		String out_trade_no = order.getOutTradeNo();

		SortedMap<String, String> packageParams = new TreeMap<String, String>();
		packageParams.put("appid", TenPayConfig.appid);
		packageParams.put("mch_id", mch_id);
		packageParams.put("nonce_str", nonce_str);
		packageParams.put("body", body);
		packageParams.put("attach", attach);
		packageParams.put("out_trade_no", out_trade_no);

		packageParams.put("total_fee", totalFee);
		packageParams.put("spbill_create_ip", spbill_create_ip);
		packageParams.put("notify_url", notify_url);

		packageParams.put("trade_type", trade_type);

		RequestHandler reqHandler = new RequestHandler(null, null);
		reqHandler.init(TenPayConfig.appid, TenPayConfig.appsecret,
				TenPayConfig.partnerkey);

		String sign = reqHandler.createSign(packageParams);
		String xml = "<xml>" + "<appid>" + TenPayConfig.appid + "</appid>"
				+ "<mch_id>" + mch_id + "</mch_id>" + "<nonce_str>" + nonce_str
				+ "</nonce_str>" + "<sign>" + sign + "</sign>"
				+ "<body><![CDATA[" + body + "]]></body>" + "<out_trade_no>"
				+ out_trade_no + "</out_trade_no>" + "<attach>" + attach
				+ "</attach>" + "<total_fee>" + totalFee + "</total_fee>"
				+ "<spbill_create_ip>" + spbill_create_ip
				+ "</spbill_create_ip>" + "<notify_url>" + notify_url
				+ "</notify_url>" + "<trade_type>" + trade_type
				+ "</trade_type>" + "</xml>";
		System.out.println(xml);
		String code_url = "";
		String createOrderURL = "https://api.mch.weixin.qq.com/pay/unifiedorder";

		code_url = new TenPayCore().getCodeUrl(createOrderURL, xml);//调用统一下单接口
		if (code_url == null || code_url.equalsIgnoreCase("")) {
			logger.debug("****************************trade has closed or no this trade in tencentPay");
			response.sendError(404);
			return;
		}

		GenerateQrCodeUtil.encodeQrcode(code_url, response);
	}


2.公众号支付

公众号支付首先通过H5调起支付api,微信生成订单,然后开发者获取预支付id,最后由用户确认支付。

①H5调起JSAPI。

调起有两种方式,一种是WeixinJSBridge.invoke(),另一种是最新的微信JSAPI,两种方式均可,官方文档用的第一种,使用第一种方式首先要引入http://res.wx.qq.com/open/js/jweixin-1.0.0.js。

function toPay(){
	$.ajax({
		url : URL,
		type : "GET",
		dataType : 'json',
		success : function(data) {
			WeixinJSBridge.invoke('getBrandWCPayRequest', {
				"appId" : data.appId, //公众号名称,由商户传入     
				"timeStamp" : data.timeStamp, //时间戳,自1970年以来的秒数     
				"nonceStr" : data.nonceStr, //随机串     
				"package" : data.package,
				"signType" : data.signType, //微信签名方式:     
				"paySign" : data.paySign
			//微信签名 
			}, function(res) {
				if (res.err_msg == "get_brand_wcpay_request:ok") {
				} // 使用以上方式判断前端返回:res.err_msg将在用户支付成功后返回    ok,但并不保证它绝对可靠。 
				else{
					//res.err_msg;
				}
			});
		}
	});
}	


②获取预支付id

这个api和扫码支付的api差不多,就是trade为JSAPI不一样。

public void  TencentPayController(@RequestParam("orderno")String orderno,HttpServletRequest request,
			HttpServletResponse response) throws IOException {
		//根据订单号查询订单
		OrderProduceBean order=reservationCarService.getTradebyNo(orderno);
		
		String appid = TenPayConfig.appid;
		String openId =order.getOpenId();
		// 订单号
		String orderId = order.getOutTradeNo();
		// 附加数据 原样返回
		String attach = "attach";
		// 总金额以分为单位,不带小数点
		String totalFee = TenpayUtil.getMoney(order.getTotalFee().toString());
		
		// 订单生成的机器 IP
		String spbill_create_ip = IpUtil.getIpAddr(request);;
		// 这里notify_url是 支付完成后微信发给该链接信息,可以判断会员是否支付成功,改变订单状态等。
		String notify_url = TenPayConfig.notifyUrl;
		String trade_type = "JSAPI";

		// ---必须参数
		// 商户号
		String mch_id = TenPayConfig.partner;
		// 随机字符串
		String nonce_str = TenpayUtil.getNonceStr();

		// 商品描述根据情况修改
		String body = order.getBody();

		// 商户订单号
		String out_trade_no = orderId;

		SortedMap<String, String> packageParams = new TreeMap<String, String>();
		packageParams.put("appid", appid);
		packageParams.put("mch_id", mch_id);
		packageParams.put("nonce_str", nonce_str);
		packageParams.put("body", body);
		packageParams.put("attach", attach);
		packageParams.put("out_trade_no", out_trade_no);

		packageParams.put("total_fee", totalFee);
		packageParams.put("spbill_create_ip", spbill_create_ip);
		packageParams.put("notify_url", notify_url);

		packageParams.put("trade_type", trade_type);
		packageParams.put("openid", openId);

		RequestHandler reqHandler = new RequestHandler(null, null);
		reqHandler.init(appid, TenPayConfig.appsecret,TenPayConfig.partnerkey);

		String sign = reqHandler.createSign(packageParams);
		String xml = "<xml>" + "<appid>" + appid + "</appid>" + "<mch_id>"
				+ mch_id + "</mch_id>" + "<nonce_str>" + nonce_str
				+ "</nonce_str>" + "<sign>" + sign + "</sign>"
				+ "<body><![CDATA[" + body + "]]></body>" 
				+ "<out_trade_no>" + out_trade_no
				+ "</out_trade_no>" + "<attach>" + attach + "</attach>"
				+ "<total_fee>" + totalFee + "</total_fee>"
				+ "<spbill_create_ip>" + spbill_create_ip
				+ "</spbill_create_ip>" + "<notify_url>" + notify_url
				+ "</notify_url>" + "<trade_type>" + trade_type
				+ "</trade_type>" + "<openid>" + openId + "</openid>"
				+ "</xml>";
		String prepay_id = "";
		String createOrderURL = "https://api.mch.weixin.qq.com/pay/unifiedorder";
				
		prepay_id = new TenPayCore().getPayNo(createOrderURL, xml);
		logger.debug("********************************************");
		logger.debug("prepay_id :" + prepay_id);
		
		
		//获取prepay_id后,拼接最后请求支付所需要的package	
		SortedMap<String, String> finalpackage = new TreeMap<String, String>();
		String timestamp = Sha1Util.getTimeStamp();
		String packages = "prepay_id="+prepay_id;
		finalpackage.put("appId", appid);  
		finalpackage.put("timeStamp", timestamp);  
		finalpackage.put("nonceStr", nonce_str);  
		finalpackage.put("package", packages);  
		finalpackage.put("signType", "MD5");
		//要签名
		String finalsign = reqHandler.createSign(finalpackage);
		finalpackage.put("paySign", finalsign);
		
		String finaPackage = "\"appId\":\"" + appid + "\",\"timeStamp\":\"" + timestamp
		+ "\",\"nonceStr\":\"" + nonce_str + "\",\"package\":\""
		+ packages + "\",\"signType\" : \"MD5" + "\",\"paySign\":\""
		+ finalsign + "\"";
		
		logger.debug("********************************************");
		logger.debug("V3 jsApi package:" + finaPackage);
		
		if(prepay_id.length()>0){
			this.callBack(response, request,this.gson.toJson(finalpackage));
			return;
		}else{
			this.callBack(response, request,"{\"error\":\"prepay_id is null\"}");
			return;
		}		
		
	}


3.支付回调

该回调方法的路径就是获取预支付id中的参数notify_url,用来处理支付完成后的业务逻辑,注意一定要检查return_code和result_code是否都为success,另外一定要给微信返回success信息.

public void notifyPay(HttpServletRequest request,
		HttpServletResponse response) throws IOException {
	// 示例报文
	String inputLine;
	String notityXml = "";
	String resXml = "";
	try {
		while ((inputLine = request.getReader().readLine()) != null) {
			notityXml += inputLine;
		}
		request.getReader().close();
	} catch (Exception e) {
		e.printStackTrace();
	}

	Map<String, String> m = TenpayUtil.parseXmlToList(notityXml);
	OrderTenPayBean orderTen = new OrderTenPayBean();
	orderTen.setAppid(m.get("appid").toString());
	orderTen.setBankType(m.get("bank_type").toString());
	orderTen.setCashFee(m.get("cash_fee").toString());
	orderTen.setFeeType(m.get("fee_type").toString());
	orderTen.setIsSubscribe(m.get("is_subscribe").toString());
	orderTen.setMchId(m.get("mch_id").toString());
	orderTen.setNonceStr(m.get("nonce_str").toString());
	orderTen.setOpenid(m.get("openid").toString());
	orderTen.setOutTradeNo(m.get("out_trade_no").toString());
	orderTen.setResultCode(m.get("result_code").toString());
	orderTen.setReturnCode(m.get("return_code").toString());
	orderTen.setSign(m.get("sign").toString());
	orderTen.setTimeEnd(m.get("time_end").toString());
	orderTen.setTotalFee(m.get("total_fee").toString());
	orderTen.setTradeType(m.get("trade_type").toString());
	orderTen.setTransactionId(m.get("transaction_id").toString());

	if ("SUCCESS".equals(orderTen.getResultCode()) && "SUCCESS".equals(orderTen.getReturnCode())<span style="font-family: Arial, Helvetica, sans-serif;">) { //必须判断</span>
		//TODO   信息入库,修改订单状态
		
		// 支付成功,必须给微信返回此信息,否则微信会一直调用此回调方法
		resXml = "<xml>" + "<return_code><![CDATA[SUCCESS]]></return_code>"
				+ "<return_msg><![CDATA[OK]]></return_msg>" + "</xml> ";
	} else {
		resXml = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>"
				+ "<return_msg><![CDATA[报文为空]]></return_msg>" + "</xml> ";
	}
	this.callBack(response, request, resXml);
}

4.退款

退款需要把商户证书apiclient_cert.p12放到指定目录下,因为有证书的情况下退款不需要密码,一定要注意业务请求的权限问题

public void refusePay(HttpServletResponse response,HttpServletRequest request,@PathVariable(value="outTradeNo")String outTradeNo) throws Exception {
	
	OrderProduceBean tradebyNo = reservationCarService.getTradebyNo(outTradeNo);
	
	SortedMap<String, String> parameters = new TreeMap<String, String>();
	parameters.put("appid", TenPayConfig.appid);
	parameters.put("mch_id", TenPayConfig.partner);
	parameters.put("nonce_str", TenpayUtil.getNonceStr());
	parameters.put("out_trade_no", tradebyNo.getOutTradeNo());
	parameters.put("out_refund_no", tradebyNo.getOutTradeNo()); // 我们自己设定的退款申请号,约束为UK
	parameters.put("total_fee", TenpayUtil.getMoney(tradebyNo.getTotalFee().toString())); // 单位为分
	parameters.put("refund_fee", TenpayUtil.getMoney(tradebyNo.getTotalFee().toString())); // 单位为分
	parameters.put("op_user_id", TenPayConfig.partner);
	
	RequestHandler reqHandler = new RequestHandler(null, null);
	reqHandler.init(TenPayConfig.appid, TenPayConfig.appsecret,
			TenPayConfig.partnerkey);

	String sign = reqHandler.createSign(parameters);
	parameters.put("sign", sign);

	String reuqestXml = TenpayUtil.getRequestXml(parameters);
	
	KeyStore keyStore  = KeyStore.getInstance("PKCS12");
	FileInputStream instream = new FileInputStream(new File(Resources.getString("cert_url")));
	try {
		keyStore.load(instream, TenPayConfig.partner.toCharArray());
	} finally {
		instream.close();
	}

	// Trust own CA and all self-signed certs
	SSLContext sslcontext = SSLContexts.custom()
			.loadKeyMaterial(keyStore, TenPayConfig.partner.toCharArray())
			.build();
	// Allow TLSv1 protocol only
	SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
			sslcontext,
			new String[] { "TLSv1" },
			null,
			SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
	CloseableHttpClient httpclient = HttpClients.custom()
			.setSSLSocketFactory(sslsf)
			.build();
	try {
		HttpPost httpPost = new HttpPost("https://api.mch.weixin.qq.com/secapi/pay/refund");
		System.out.println("executing request" + httpPost.getRequestLine());
		StringEntity reqEntity = new StringEntity(reuqestXml);
		// 设置类型
		reqEntity.setContentType("application/x-www-form-urlencoded");
		httpPost.setEntity(reqEntity);
		CloseableHttpResponse reqs = httpclient.execute(httpPost);
		try {
			HttpEntity entity = reqs.getEntity();
			if (entity != null) {
				System.out.println("Response content length: " + entity.getContentLength());
				BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(entity.getContent()));
				String returnXml = "";
				String text;
				while ((text = bufferedReader.readLine()) != null) {
					returnXml += text;
				}
				//微信退款返回的参数转换为Map
				Map<String, String> resultMaP = TenpayUtil.parseXmlToList(returnXml);
				this.callBack(response, request, resultMaP.toString());
				//TODO   信息入库			
				
			}
			EntityUtils.consume(entity);
		} finally {
			reqs.close();
		}
	} finally {
		httpclient.close();
	}

}

PS:代码仅供参考!




微信支付公的众号支付和扫码支付

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原文地址:http://blog.csdn.net/boyish_/article/details/51768784

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