本文實例為大家分享了java使用支付寶掃碼支付的具體代碼，供大家參考，具體內容如下
準備工作
首先開通支付寶沙箱的測試賬號，裡面會有消費者賬戶和收款方賬戶
手機掃碼下載手機端app
基礎配置
所需jar包
AlipayConfig
package com.alipay.config;import java.io.FileWriter;import java.io.IOException;import java.util.ResourceBundle;/* * *類名：AlipayConfig *功能：基礎配置類*詳細：設置帳戶有關信息及返迴路徑*修改日期：2017-04-05 *說明： *以下代碼只是為了方便商戶測試而提供的樣例代碼，商戶可以根據自己網站的需要，按照技術文檔編寫,並非一定要使用該代碼。 *該代碼僅供學習和研究支付寶接口使用，只是提供一個參考。 */public class AlipayConfig { //↓↓↓↓↓↓↓↓↓↓請在這裡配置您的基本信息// 應用ID,您的APPID，收款賬號既是您的APPID對應支付寶賬號public static String app_id = "2016080403162340"; // 商戶私鑰，您的PKCS8格式RSA2私鑰public static String merchant_private_key = "MIIEvAID2tulSSmawG5+F4NZbexpnxi8NKQJPZEeAA=="; // 支付寶公鑰,查看地址：https://openhome.alipay.com/platform/keyManage.htm 對應APPID下的支付寶公鑰。 public static String alipay_public_key = "MIIBIjt26tLTKar8S1ERDWI25viBcMz7PLMxVVUmHf5tdBWfbMhUs3QIDAQAB"; // 服務器異步通知頁面路徑需http://格式的完整路徑，不能加?id=123這類自定義參數，必須外網可以正常訪問public static String notify_url = "http://localhost:8080/alipay.trade.page.pay-JAVA-UTF-8/notify_url.jsp"; // 頁面跳轉同步通知頁面路徑需http://格式的完整路徑，不能加?id=123這類自定義參數，必須外網可以正常訪問public static String return_url = "http://localhost:8080/Exam/index/gouMai"; // 簽名方式public static String sign_type = "RSA2"; // 字符編碼格式public static String charset = "utf-8"; // 支付寶網關public static String gatewayUrl = "https://openapi.alipaydev.com/gateway.do"; // 支付寶網關public static String log_path = "E://"; //↑↑↑↑↑↑↑↑↑↑請在這裡配置您的基本信息/** * 寫日誌，方便測試（看網站需求，也可以改成把記錄存入數據庫） * @param sWord 要寫入日誌裡的文本內容*/ 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(); } } } }}Controller
//生成有二維碼，可供掃碼支付的頁面@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 //獲得初始化的AlipayClient AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type); //設置請求參數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; //付款金額，必填String total_amount = WIDtotal_amount; total_amount=URLDecoder.decode(total_amount,"UTF-8");//轉碼//訂單名稱，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/"}"); //請求String result = alipayClient.pageExecute(alipayRequest).getBody(); response.setContentType("text/html; charset=utf-8"); PrintWriter out = response.getWriter(); out.println(result); return null; }支付成功的放回頁面（return_url）
成功後的返迴路徑，走Controller，詳見AlipayConfig中的配置
//點擊購買，將課程存入購買表中@RequestMapping(value="gouMai") @ResponseBody public ModelAndView gouMai(String chapterId,HttpServletRequest req,String a,String urlName,String couName,ModelMap map){ ModelAndView mav = new ModelAndView(); Map<String,String> mapp1 = new HashMap<String,String>();// 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); } //查詢課程內容// String fanhui = showFH(req,chapterId,urlName,couName,map, a); mav.setViewName("jsp/pay/paySuccess"); return mav; }支付成功後，頁面跳轉至paySuccess.jsp頁面。
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。