SpringBoot集成支付宝沙箱支付（支付、退款）

public class AlipayConfig{ // 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 = "2016091600523365";  // 商户私钥，您的PKCS8格式RSA2私钥 public static String merchant_private_key = "商户私钥"; // 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 = "支付宝公钥"; // 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://工程公网访问地址";  // 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://工程公网访问地址";  // 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 = "C://";  //↑↑↑↑↑↑↑↑↑↑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();    }   }  } }}

@RequestMapping("ali") public void ali(HttpServletResponse response, HttpServletRequest request) throws IOException, AlipayApiException {  ordersService.ali(response,request); }

@Overridepublic void ali(HttpServletResponse response, HttpServletRequest request) throws AlipayApiException, IOException{  //设置编码  response.setContentType("text/html;charset=utf-8");   PrintWriter out = response.getWriter();  //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);  aliPayRequest.setNotifyUrl(AlipayConfig.notify_url);   //商户订单号，后台可以写一个工具类生成一个订单号，必填  String order_number = new String(订单号);  //付款金额，从前台获取，必填  String total_amount = new String(付款金额);  //订单名称，必填  String subject = new String("支付宝沙箱支付（名称随便起）");  aliPayRequest.setBizContent("{/"out_trade_no/":/"" + order_number + "/","    + "/"total_amount/":/"" + total_amount + "/","    + "/"subject/":/"" + subject + "/","    + "/"product_code/":/"FAST_INSTANT_TRADE_PAY/"}");  //请求  String result = alipayClient.pageExecute(aliPayRequest).getBody();  //输出  out.println(result);//以下写自己的订单代码}

PrintWriter out = response.getWriter();out.println(result);

//退款@Overridepublic void refund(HttpServletResponse response,HttpSession session) throws IOException, AlipayApiException { response.setContentType("text/html;charset=utf-8"); PrintWriter out = response.getWriter(); //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 AlipayTradeRefundRequest alipayRequest = new AlipayTradeRefundRequest(); //商户订单号，必填 String out_trade_no = new String(订单号); //需要退款的金额，该金额不能大于订单金额，必填 String refund_amount = new String(退款金额); //标识一次退款请求，同一笔交易多次退款需要保证唯一，如需部分退款，则此参数必传 String out_request_no = new String(UUID.randomUUID().toString());  alipayRequest.setBizContent("{/"out_trade_no/":/""+ out_trade_no +"/","   + "/"refund_amount/":/""+ refund_amount +"/","   + "/"out_request_no/":/""+ out_request_no +"/"}"); //请求 String result = alipayClient.execute(alipayRequest).getBody(); //输出 out.println(result);以下写自己的订单退款代码}