java实现在SSM下使用支付宝扫码支付功能

 package com.alipay.config; import java.io.FileWriter; import java.io.IOException; import java.util.ResourceBundle; /* * *类名：AlipayConfig *功能：基础配置类 *详细：设置帐户有关信息及返回路径 *修改日期：2017-04-05 *说明： *以下代码只是为了方便商户测试而提供的样例代码，商户可以根据自己网站的需要，按照技术文档编写,并非一定要使用该代码。 *该代码仅供学习和研究支付宝接口使用，只是提供一个参考。 */ public class AlipayConfig { //↓↓↓↓↓↓↓↓↓↓请在这里配置您的基本信息 // 应用ID,您的APPID，收款账号既是您的APPID对应支付宝账号 public static String app_id = "2016080403162340"; // 商户私钥，您的PKCS8格式RSA2私钥 public static String merchant_private_key = "MIIEvAID2tulSSmawG5+F4NZbexpnxi8NKQJPZEeAA=="; // 支付宝公钥,查看地址：https://openhome.alipay.com/platform/keyManage.htm 对应APPID下的支付宝公钥。 public static String alipay_public_key = "MIIBIjt26tLTKar8S1ERDWI25viBcMz7PLMxVVUmHf5tdBWfbMhUs3QIDAQAB"; // 服务器异步通知页面路径 需http://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问 public static String notify_url = "http://localhost:8080/alipay.trade.page.pay-JAVA-UTF-8/notify_url.jsp"; // 页面跳转同步通知页面路径 需http://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问 public static String return_url = "http://localhost:8080/Exam/index/gouMai"; // 签名方式 public static String sign_type = "RSA2"; // 字符编码格式 public static String charset = "utf-8"; // 支付宝网关 public static String gatewayUrl = "https://openapi.alipaydev.com/gateway.do"; // 支付宝网关 public static String log_path = "E:\\"; //↑↑↑↑↑↑↑↑↑↑请在这里配置您的基本信息 /** * 写日志，方便测试（看网站需求，也可以改成把记录存入数据库） * @param sWord 要写入日志里的文本内容 */ public static void logResult(String sWord ) { FileWriter writer = null; try { writer = new FileWriter(log_path + "alipay_log_" + System.currentTimeMillis()+".txt"); writer.write(sWord); } catch (Exception e) { e.printStackTrace(); } finally { if (writer != null) { try { writer.close(); } catch (IOException e) { e.printStackTrace(); } } } } } 

 //生成有二维码，可供扫码支付的页面 @RequestMapping(value = "aliPay") public String aliPay(HttpServletResponse response,ModelMap map,String chapterId,HttpServletRequest request, String WIDout_trade_no,String WIDtotal_amount,String WIDsubject,String WIDbody) throws IOException, AlipayApiException{ //   String a,String urlName,String couName....+"&a="+a+"&urlName="+urlName+"&couName="+couName //获得初始化的AlipayClient AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type); //设置请求参数 AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest(); alipayRequest.setReturnUrl(AlipayConfig.return_url+"?chapterId="+chapterId); alipayRequest.setNotifyUrl(AlipayConfig.notify_url); //付款ID，必填 String out_trade_no = WIDout_trade_no; //付款金额，必填 String total_amount = WIDtotal_amount; total_amount=URLDecoder.decode(total_amount,"UTF-8");//转码 //订单名称，必填 String subject = WIDsubject; subject=URLDecoder.decode(subject,"UTF-8"); //商品描述，可空 String body = WIDbody; alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\"," + "\"total_amount\":\""+ total_amount +"\"," + "\"subject\":\""+ subject +"\"," + "\"body\":\""+ body +"\"," + "\"timeout_express\":\"1m\"," + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}"); //请求 String result = alipayClient.pageExecute(alipayRequest).getBody(); response.setContentType("text/html; charset=utf-8"); PrintWriter out = response.getWriter(); out.println(result); return null; } 

 //点击购买，将课程存入购买表中 @RequestMapping(value="gouMai") @ResponseBody public ModelAndView gouMai(String chapterId,HttpServletRequest req,String a,String urlName,String couName,ModelMap map){ ModelAndView mav = new ModelAndView(); Map mapp1 = new HashMap(); //   SysUserTab login_user = sysuserService.getSysUserById(userId); HttpSession session = req.getSession(); SysUserTab login_user1 = (SysUserTab) session.getAttribute("login_user"); String userId = login_user1.getUserId(); //   session.setAttribute("login_user", login_user); mapp1.put("userId", userId); mapp1.put("chapterId", chapterId); int num = sysBuyService.getBuyCount(mapp1); if(num==0){ mapp1.put("buyId", UUID.randomUUID().toString().replace("-", "")); sysBuyService.insertBuy(mapp1); } //查询课程内容 //   String fanhui = showFH(req,chapterId,urlName,couName,map, a); mav.setViewName("jsp/pay/paySuccess"); return mav; }