1.添加依賴

<dependency>
<groupId>com.alipay.sdk</groupId>
<artifactId>alipay-sdk-java</artifactId>
<version>3.7.4.ALL</version>
</dependency>

2.進行配置基本的支付信息

package com.bookstore.utils;import java.io.FileWriter; import java.io.IOException;public class AlipayConfig {// 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 = "";// 商戶私鑰，您的PKCS8格式RSA2私鑰public static String merchant_private_key = "";// 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 = "";// 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:xxxx/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//掃碼成功之后跳到哪個處理器方法public static String return_url = "http://localhost:xxxx/xx/xx.do";// 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 = "C:\\";//↑↑↑↑↑↑↑↑↑↑請在這里配置您的基本信息↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑/*** 寫日志，方便測試（看網站需求，也可以改成把記錄存入數據庫）* @param sWord 要寫入日志里的文本內容*/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();}}}} }

3.提交的.do方法

@RequestMapping("/pay.do")public void pay(String id, String money, String name, HttpServletResponse response) throws Exception {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);alipayRequest.setNotifyUrl(AlipayConfig.notify_url);//商戶訂單號，商戶網站訂單系統中唯一訂單號，必填String out_trade_no = id;//付款金額，必填String total_amount = money;//訂單名稱，必填String subject = name;//商品描述，可空String body = "";alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","+ "\"total_amount\":\""+ total_amount +"\","+ "\"subject\":\""+ subject +"\","+ "\"body\":\""+ body +"\","+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");//若想給BizContent增加其他可選請求參數，以增加自定義超時時間參數timeout_express來舉例說明//alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","// + "\"total_amount\":\""+ total_amount +"\","// + "\"subject\":\""+ subject +"\","// + "\"body\":\""+ body +"\","// + "\"timeout_express\":\"10m\","// + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");//請求參數可查閱【電腦網站支付的API文檔-alipay.trade.page.pay-請求參數】章節//請求String result = alipayClient.pageExecute(alipayRequest).getBody();response.setContentType("text/html;charset=UTF-8");//輸出 response.getWriter().println(result);}

4.支付成功之后，跳轉到商城首頁

@RequestMapping("/paysuccess.do")public String paysuccess(HttpServletRequest request) throws Exception {//獲取支付寶GET過來反饋信息Map<String,String> params = new HashMap<String,String>();Map<String,String[]> requestParams = request.getParameterMap();for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {String name = (String) iter.next();String[] values = (String[]) requestParams.get(name);String valueStr = "";for (int i = 0; i < values.length; i++) {valueStr = (i == values.length - 1) ? valueStr + values[i]: valueStr + values[i] + ",";}//亂碼解決，這段代碼在出現亂碼時使用valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");params.put(name, valueStr);}boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //調用SDK驗證簽名//——請在這里編寫您的程序（以下代碼僅作參考）——if(signVerified) {//商戶訂單號String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");//支付寶交易號String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");//付款金額String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"),"UTF-8");productService.paysuccess(out_trade_no);return "redirect:/client/paysuccess.jsp";//out.println("trade_no:"+trade_no+"<br/>out_trade_no:"+out_trade_no+"<br/>total_amount:"+total_amount);}else {return "/client/fail.jsp";//out.println("驗簽失敗"); }}

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轉載于:https://www.cnblogs.com/liuna369-4369/p/10969990.html

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