微信公众号支付java版本

回调函数


@RequestMapping("/toPay")

	public String toPay(HttpServletRequest request, HttpServletResponse response, Model model){

		System.out.println("toPay success");

		try {

			String orderId = request.getParameter("orderId");

			System.out.println("in toPay,orderId:" + orderId);

			String totalFeeStr = request.getParameter("totalFee");

			Float totalFee = 0.0f;

			if(StringUtils.isNotBlank(totalFeeStr)){

				totalFee = new Float(totalFeeStr);

			}

			//网页授权后获取传递的参数

			//String userId = request.getParameter("userId");

			String code = request.getParameter("code");

			System.out.println("code:"+code);

			//System.out.println("userId:"+userId);

			//获取统一下单需要的openid

			String openId ="";

			String URL = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="

					+ WxPayConfig.appid + "&amp;secret=" + WxPayConfig.appsecret + "&amp;code=" + code + "&amp;grant_type=authorization_code";

			System.out.println("URL:"+URL);

			JSONObject jsonObject = CommonUtil.httpsRequest(URL, "GET", null);

			if (null != jsonObject) {

				openId = jsonObject.getString("openid");

				System.out.println("openId:" + openId);

			}

			//获取openId后调用统一支付接口https://api.mch.weixin.qq.com/pay/unifiedorder

			//随机数

			//String nonce_str = "1add1a30ac87aa2db72f57a2375d8fec";

			String nonce_str = UUID.randomUUID().toString().replaceAll("-", "");

			//商品描述

			String body = orderId;

			//商户订单号

			String out_trade_no = orderId;

			//订单生成的机器 IP

			String spbill_create_ip = request.getRemoteAddr();

			//总金额

			//TODO

			Integer total_fee = Math.round(totalFee*100);

			//Integer total_fee = 1;

			//商户号

			//String mch_id = partner;

			//子商户号  非必输

			//String sub_mch_id="";

			//设备号   非必输

			//String device_info="";

			//附加数据

			//String attach = userId;

			//总金额以分为单位，不带小数点

			//int total_fee = intMoney;

			//订 单 生 成 时 间   非必输

			//String time_start ="";

			//订单失效时间      非必输

			//String time_expire = "";

			//商品标记   非必输

			//String goods_tag = "";

			//非必输

			//String product_id = "";

			//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 = baseUrl + "/wx/notifyUrl.do";

			SortedMap&lt;String, String&gt; packageParams = new TreeMap&lt;String, String&gt;();

			packageParams.put("appid", WxPayConfig.appid);

			packageParams.put("mch_id", WxPayConfig.partner);

			packageParams.put("nonce_str", nonce_str);

			packageParams.put("body", body);

			packageParams.put("out_trade_no", out_trade_no);

			packageParams.put("total_fee", total_fee+"");

			packageParams.put("spbill_create_ip", spbill_create_ip);

			packageParams.put("notify_url", notify_url);

			packageParams.put("trade_type", WxPayConfig.trade_type);

			packageParams.put("openid", openId);  

			RequestHandler reqHandler = new RequestHandler(request, response);

			reqHandler.init(WxPayConfig.appid, WxPayConfig.appsecret, WxPayConfig.partnerkey);

			String sign = reqHandler.createSign(packageParams);

			System.out.println("sign:"+sign);

			String xml="&lt;xml&gt;"+

					"&lt;appid&gt;"+WxPayConfig.appid+"&lt;/appid&gt;"+

					"&lt;mch_id&gt;"+WxPayConfig.partner+"&lt;/mch_id&gt;"+

					"&lt;nonce_str&gt;"+nonce_str+"&lt;/nonce_str&gt;"+

					"&lt;sign&gt;"+sign+"&lt;/sign&gt;"+

					"&lt;body&gt;&lt;![CDATA["+body+"]]&gt;&lt;/body&gt;"+

					"&lt;out_trade_no&gt;"+out_trade_no+"&lt;/out_trade_no&gt;"+

					"&lt;total_fee&gt;"+total_fee+""+"&lt;/total_fee&gt;"+

					"&lt;spbill_create_ip&gt;"+spbill_create_ip+"&lt;/spbill_create_ip&gt;"+

					"&lt;notify_url&gt;"+notify_url+"&lt;/notify_url&gt;"+

					"&lt;trade_type&gt;"+WxPayConfig.trade_type+"&lt;/trade_type&gt;"+

					"&lt;openid&gt;"+openId+"&lt;/openid&gt;"+

					"&lt;/xml&gt;";

			System.out.println("xml："+xml);

			String createOrderURL = "https://api.mch.weixin.qq.com/pay/unifiedorder";

			String prepay_id="";

			try {

				prepay_id = WeixinPayUtil.getPayNo(createOrderURL, xml);

				System.out.println("prepay_id:" + prepay_id);

				if(prepay_id.equals("")){

					request.setAttribute("ErrorMsg", "统一支付接口获取预支付订单出错");

					response.sendRedirect("error.jsp");

				}

			} catch (Exception e1) {

				e1.printStackTrace();

			}

			SortedMap&lt;String, String&gt; finalpackage = new TreeMap&lt;String, String&gt;();

			String timestamp = Sha1Util.getTimeStamp();

			String packages = "prepay_id="+prepay_id;

			finalpackage.put("appId", WxPayConfig.appid);

			finalpackage.put("timeStamp", timestamp);

			finalpackage.put("nonceStr", nonce_str);

			finalpackage.put("package", packages);

			finalpackage.put("signType", WxPayConfig.signType);

			String finalsign = reqHandler.createSign(finalpackage);

			System.out.println("/jsapi?appid="+WxPayConfig.appid+"&amp;timeStamp="+timestamp+"&amp;nonceStr="+nonce_str+"&amp;package="+packages+"&amp;sign="+finalsign);

			model.addAttribute("appid", WxPayConfig.appid);

			model.addAttribute("timeStamp", timestamp);

			model.addAttribute("nonceStr", nonce_str);

			model.addAttribute("packageValue", packages);

			model.addAttribute("sign", finalsign);

			model.addAttribute("bizOrderId", orderId);

			model.addAttribute("orderId", orderId);

			model.addAttribute("payPrice", total_fee);

			System.out.println("orderId:---------------"+orderId);

			return "/jsapi";

		} catch (NumberFormatException e) {

			e.printStackTrace();

		}

		return null;

	}
巴特西

微信公众号支付java版本

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