支付宝PC端支付及H5支付

支付宝支付需要的jar包如下:

<dependency>
    <groupId>com.alipay.sdk</groupId>
    <artifactId>alipay-sdk-java</artifactId>
    <version>3.7.26.ALL</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.34</version>
    <scope>compile</scope>
</dependency>

在服务配置文件.yaml下面配置支付宝的同步回调页面和异步回调接口
注意:异步回调接口中处理支付成功后的业务逻辑
此处由于项目前端路由配置原因:同步回调页面被写到了项目中

alipay:
  notifyUrl: http://hbbonc.natapp1.cc/portal/nebula-pay/ali-rec
  returnUrl: http://localhost:10101/portal/index.html

前端回调页面:由于支付宝支付时打开的是第三方(支付宝)的接口,需要一个回调页面来跳转到我们自己的网站。

<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>回调页面</title>
    <style>
        body{width: 100%;}
        .back-page{width: 100%; height: 100%; padding: 10px; text-align: center; font-size: 16px; padding-top: 20px}
        .back-page-box{width: 100%; height: 100%}
        .back-page-top{margin-top: 70px;}
        .back-page-top span{display: block; width: 60px; height: 60px; border-radius: 30px; background-color: #3388ff; font-size: 32px; color: #fff; margin: 0 auto; line-height: 60px}
        .back-page-middle{margin-top: 10px}
        .back-page-middle span{font-size: 18px}
        .back-page-bottom{margin-top: 20px}
        .back-page-bottom button{width: 110px;height: 40px;font-size: 14px; background-color: #fff;box-shadow: none;border: 1px solid #ff9b0b;color: #ff9b0b}
    </style>
</head>
<body>
<div class='back-page'>
    <div class='back-page-box'>
        <div class='back-page-top'>
            <span></span>
        </div>
        <div class='back-page-middle'>
            <span>支付成功</span>
        </div>
        <div class='back-page-bottom'>
            <button id='button'>返回订单列表</button>
        </div>
    </div>
</div>
</body>
<script>
    var btn = document.getElementById('button')
    btn.addEventListener('click', function(){
        window.location.reload()
        window.history.go(-1)
    },false)
</script>
</html>

支付宝配置文件:
AlipayConfig,此文件主要用于配置支付宝的公钥以及私钥,回调地址,回调页面
应用ID:需要用户去支付宝开放平台申请开通
签名方式:RSA2
字符编码格式:UTF-8
生产环境调用网关:https://openapi.alipay.com/gateway.do

@Component
public class AlipayConfig {

    @Value("${alipay.notifyUrl}")
    private String notifyUrl;
    @Value("${alipay.returnUrl}")
    private String returnUrl;

    @PostConstruct
    private void init(){
        notify_url=notifyUrl;
        return_url=returnUrl;
    }
   
//配置您的基本信息

    // 应用ID /自己申请的appid,支付宝的私钥及公钥
    public static String app_id ="********";
    // 商户私钥,您的PKCS8格式RSA2私钥

    //生产环境商户私钥
    public static String merchant_private_key = "*******";


    // 支付宝公钥

    //生产环境支付宝公钥
    public static String alipay_public_key = "**********";

    // 服务器异步通知页面路径

   public static String notify_url ;

    // 页面跳转同步通知页面路径
    public static String return_url ;

    // 签名方式
   public static String sign_type = "RSA2";

    // 字符编码格式
   public static String charset = "utf-8";

   
   //生产环境网关
    public static String gatewayUrl = "https://openapi.alipay.com/gateway.do";
   
   // ֧log

   public static String log_path = "/home/sce/sce_service/key/log";

//配置您的基本信息

    /** 
     * 写日志,方便测试
     * @param sWord
     */
    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();
                }
            }
        }
    }
}

此处可以将所有支付宝配置信息都写入服务的配置文件中,使用@Value注解进行取值,如下:

alipay:
  app_id: *******
  merchant_private_key: ******* 
  alipay_public_key :  *****
  notifyUrl: http://hbbonc.natapp1.cc/portal/nebula-pay/ali-rec
  returnUrl: http://localhost:10101/portal/index.html
  sign_type :RSA2
  charset  : utf-8
  gatewayUrl : https://openapi.alipay.com/gateway.do

取值时使用@Value注解,如果需要将取得的值转换为静态变量,则可以使用@PostConstruct来实现

public class AliPayConfig{
    @Value("${alipay.notifyUrl}")
    private String notifyUrl;
    @Value("${alipay.returnUrl}")
    private String returnUrl;
    @Value("${alipay.app_id}")
    private String appId;
    // 此处省略其它参数取值,参照上面的取值方式
    .........
     // 此方法用于将非静态变量转为静态变量
    @PostConstruct
    public void init(){
        app_id=appId;
        return_url=returnUrl;
        notify_url=notifyUrl;
        ........
    }
    public static String app_id;
    public static String notify_url;
    //以下为其它配置信息
    .........
}

支付时,客户端用户点击提交订单,跳转到支付界面,选择支付宝支付,调用后端支付接口生成支付宝第三方支付页面,并直接输出到前台

@RequestMapping("/pay")
@RestController
public class PayController {
    private final AliPayService aliPayService;
    public PayController(AliPayService aliPayService){
        this.aliPayService=aliPayService;
    }
    public void aliPay(HttpServletRequest httpServletRequest
        ,HttpServletResponse httpServletResponse
        ,@RequestParam( "WIDout_trade_no" ) String WIDout_trade_no
        ,@RequestParam( "WIDtotal_amount" ) String WIDtotal_amount
        ,@RequestParam( "WIDsubject" ) String WIDsubject
        ,@RequestParam( "WIDbody" ) String WIDbody){
            //根据业务需要,可以先进行支付相关的日志记录,只要调用了支付接口,不管用户是否进行支付,均可记录到数据库中
            //此demo只做支付操作,不做日志记录,此处的model为日志记录实体类
            PayLogOutModel model = new PayLogOutModel();
            //model.setCreateBy(userId);
            model.setOrderId(WIDout_trade_no);
            OrderLogModel log = new OrderLogModel();
            log.setOrderNo(WIDout_trade_no);
            log.setPayType("2");    //支付类型1银联 2支付宝 3微信
            log.setStatus("0");     //0支付
            log.setCreateBy("0");  //操作人0本系统 1银联 2支付宝 3微信
            orderOperateLogService.operateLog(log);//记录订单操作日志
            aliPayService.aliPay(httpServletRequest,httpServletResponse,model);           
        }
}

业务逻辑处理的层代码:

@Service
@Slf4j
public class AliPayService{
    public void aliPay(HttpServletRequest request, HttpServletResponse httpServletResponse,PayLogOutModel model){
        //此处已将使用model的日志记录调用服务删除
         AliPayServlet ali = new AliPayServlet();
        ali.doPost(request,httpServletResponse);
    }
}

支付宝支付函数调用:(建议价格,商品信息等通过数据库查询,不要使用前端数据)
参数passback_params,如果请求时传递了该参数,则返回给商户时会回传该参数。支付宝只会在同步返回(包括跳转回商户网站)和异步通知时将该参数原样返回。本参数必须进行UrlEncode之后才可以发送给支付宝。此参数可以做为网站标志,在回调函数中使用,可以保证付款用户是同一人

public class AliPayServlet extends HttpServlet{
@Override
public void init(ServletConfig config) throws ServletException {
    super.init();
}

private String message = "";

private void setMessage(String mess){
    this.message = mess;
}

public String getMessage(){
    return this.message;
}


@Override
public void doPost(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {

    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,商户网站订单系统中唯一订单号,必填
    String out_trade_no = req.getParameter("WIDout_trade_no");
    //付款金额,必填
    String total_amount = req.getParameter("WIDtotal_amount");
    //订单名称,必填
    String subject = req.getParameter("WIDsubject");
    //商品描述,可空
    String body = req.getParameter("WIDbody");
    //设置传输参数:订单号,订单总价格,订单描述,付款类型
    alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
            + "\"total_amount\":\""+ total_amount +"\","
            + "\"subject\":\""+ subject +"\","
            + "\"body\":\""+ body +"\","
            + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");


    //请求
    String result = null;
    try {
        result = alipayClient.pageExecute(alipayRequest).getBody();
        this.setMessage(result);
    } catch (AlipayApiException e) {
        e.printStackTrace();
    }
    //输出
    out.println(result);
    //设置输出格式为utf-8,否则会中文乱码
    resp.setContentType("text/html;charset=" + AlipayConfig.charset);
    resp.getWriter().write(result);
    resp.getWriter().flush();
    resp.getWriter().close();

}

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {
    doPost(req, resp);
}
}

支付宝回调函数(回调入口):

@PostMapping( "/ali-rec" )
@ResponseBody
public String aliRec(HttpServletRequest httpServletRequest,HttpServletResponse httpServletResponse

) {
    try {
        return aliPayService.aliPayResponse(httpServletRequest,httpServletResponse);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return "false";
}

回调业务处理:
@Transactional(rollbackFor = Exception.class)
public String aliPayResponse(HttpServletRequest request, HttpServletResponse httpServletResponse) throws Exception {
    AliRecServlet ali = new AliRecServlet();
      ali.doPost(request,httpServletResponse);
      return "success";
}

AliRecServlet回调方法逻辑:

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public class AliRecServlet extends HttpServlet{

    @Override
    public void init(ServletConfig config) throws ServletException {
        super.init();
    }

    private String message = "";
    private String orderId = "";
    private String outOrderNO = ""; // 外部系统订单号
    private String status = "2";
    private String amount = "";

    public String getAmount() {
        return amount;
    }

    public void setAmount(String amount) {
        this.amount = amount;
    }

    private void setMessage(String mess){
        this.message = mess;
    }

    public String getMessage(){
        return this.message;
    }

    public String getOrderId() {
        return orderId;
    }

    public void setOrderId(String orderId) {
        this.orderId = orderId;
    }

    public String getOutOrderNO() {
        return outOrderNO;
    }

    public void setOutOrderNO(String outOrderNO) {
        this.outOrderNO = outOrderNO;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse resp)
            throws ServletException, IOException {

        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] + ",";
            }
            //乱码解决,这段代码在出现乱码时使用
//            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }


        boolean signVerified = false;
        try {
            //支付宝回调数据与本订单数据进行校验
            signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }

        //——请在这里编写您的程序(以下代码仅作参考)——

   /* 实际验证过程建议商户务必添加以下校验:
   1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号,
   2、判断total_amount是否确实为该订单的实际金额(即商户订单创建时的金额),
   3、校验通知中的seller_id(或者seller_email) 是否为out_trade_no这笔单据的对应的操作方(有的时候,一个商户可能有多个seller_id/seller_email)
   4、验证app_id是否为该商户本身。
   */
        String out_trade_no = "";
        if(request.getParameter("out_trade_no")!=null){
            out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");
            this.setOrderId(out_trade_no);//星云订单号
        }


        if(request.getParameter("trade_no")!=null){
            String zhifubaoOrderNo = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");
            this.setOutOrderNO(zhifubaoOrderNo);//支付宝订单号
        }

        if(request.getParameter("trade_status")!=null){
            String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"),"UTF-8");
            if (trade_status.equals("TRADE_SUCCESS")){
                this.setStatus("1"); //支付成功
            }
        }

        if(request.getParameter("buyer_pay_amount")!=null){
            String am = new String(request.getParameter("buyer_pay_amount").getBytes("ISO-8859-1"),"UTF-8");
            this.setAmount(am);//金额
        }

        if(signVerified) {//验证成功
            out.println("signVerified验证成功");
            //商户订单号
            out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //交易状态
            String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"),"UTF-8");

            if(trade_status.equals("TRADE_FINISHED")){
                //判断该笔订单是否在商户网站中已经做过处理
                //如果没有做过处理,根据订单号(out_trade_no)在商户网站的订单系统中查到该笔订单的详细,并执行商户的业务程序
                //如果有做过处理,不执行商户的业务程序
                AlipayConfig.logResult("单据号:"+out_trade_no+"/n"+"交易状态:"+"TRADE_FINISHED /n");
                //注意:
                //退款日期超过可退款期限后(如三个月可退款),支付宝系统发送该交易状态通知
            }else if (trade_status.equals("TRADE_SUCCESS")){
                //判断该笔订单是否在商户网站中已经做过处理
                //如果没有做过处理,根据订单号(out_trade_no)在商户网站的订单系统中查到该笔订单的详细,并执行商户的业务程序
                //如果有做过处理,不执行商户的业务程序
                AlipayConfig.logResult("单据号:"+out_trade_no+"/n"+"交易状态:"+"TRADE_SUCCESS /n");
                //注意:
                //付款完成后,支付宝系统发送该交易状态通知
            }
            this.setMessage(AlipaySignature.getSignCheckContentV1(params));//记录报文
            out.println("success");

        }else {//验证失败
            out.println("signVerified验证失败");

            //调试用,写文本函数记录程序运行情况是否正常
            String sWord = AlipaySignature.getSignCheckContentV1(params);
            AlipayConfig.logResult(sWord);
            this.setMessage(sWord);//记录报文
        }


    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        doPost(req, resp);
    }
}

H5支付(此支付方式在支付宝官方建议不采用)
H5支付配置信息同PC端二维码支付

Controller层方法如下:
public class AliH5Pay{
    private final AppPayService appPayService;
    @Autowired
    public AliH5Pay(AppPayService appPayService){
        this.appPayService=appService;
    }
    public String aliWapPay(@RequestParam( "WIDout_trade_no" ) String WIDout_trade_no
        ,@RequestParam( "WIDtotal_amount" ) String WIDtotal_amount
        ,@RequestParam( "WIDsubject" ) String WIDsubject
        ,@RequestParam( "WIDbody" ) String WIDbody) throws AlipayApiException {
    //日志记录,可忽略,根据系统需求添加

    return appPayService.wapAppPay(model,WIDout_trade_no,WIDtotal_amount,WIDbody,WIDsubject);
    }
}

付款处理:此处为get方式获取支付链接返回给前端,由前端放在a标签中进行跳转
AliWapPayServlet取得支付宝方的支付链接

public class AliWapPayServlet extends HttpServlet {
    public String getJumpUrl(String wiDout_trade_no, String wiDtotal_amount, String wiDbody, String wiDsubject) throws AlipayApiException {
        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,使用的实体类不一样
        AlipayTradeWapPayRequest alipayRequest = new AlipayTradeWapPayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.return_url);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

        //商户订单号,商户网站订单系统中唯一订单号,必填
        String out_trade_no = wiDout_trade_no;
        //付款金额,必填
        String total_amount = wiDtotal_amount;
        //订单名称,必填
        String subject = wiDsubject;
        //商品描述,可空
        String body =wiDbody;
        //超时时间
        String timeout_express="1h";
        alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
                + "\"total_amount\":\""+ total_amount +"\","
                + "\"subject\":\""+ subject +"\","
                + "\"body\":\""+ body +"\","
                + "\"timeout_express\":\""+ timeout_express +"\","
                + "\"product_code\":\"QUICK_WAP_PAY\"}");
        AlipayTradeWapPayResponse response=alipayClient.pageExecute(alipayRequest,"get");
        String result=response.getBody();
        out.println(result);
        return result;
    }

}

若使用post方式,则方法如下,注意此方式调用支付宝付款时,无法控制跳转页面的有效时间,因为此方法是后端直接跳转,前端无法获取跳转链接

public class AliWapPayServlet extends HttpServlet {
   @Override
public void init(ServletConfig config) throws ServletException {
    super.init();
}

private String message = "";

private void setMessage(String mess){
    this.message = mess;
}

public String getMessage(){
    return this.message;
}


@Override
public void doPost(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {

    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
    AlipayTradeWapPayRequest alipayRequest = new AlipayTradeWapPayRequest();
    alipayRequest.setReturnUrl(AlipayConfig.return_url);
    alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

    //商户订单号,商户网站订单系统中唯一订单号,必填
    String out_trade_no = req.getParameter("WIDout_trade_no");
    //付款金额,必填
    String total_amount = req.getParameter("WIDtotal_amount");
    //订单名称,必填
    String subject = req.getParameter("WIDsubject");
    //商品描述,可空
    String body = req.getParameter("WIDbody");
    //超时时间
    String timeout_express="1c";

    alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
            + "\"total_amount\":\""+ total_amount +"\","
            + "\"subject\":\""+ subject +"\","
            + "\"body\":\""+ body +"\","
            + "\"timeout_express\":\""+ timeout_express +"\","
            + "\"product_code\":\"QUICK_WAP_PAY\"}");


    //请求
    String result = null;
    try {
        result = alipayClient.pageExecute(alipayRequest).getBody();
        this.setMessage(result);
    } catch (AlipayApiException e) {
        e.printStackTrace();
    }

    //输出
    out.println(result);

    resp.setContentType("text/html;charset=" + AlipayConfig.charset);
    resp.getWriter().write(result);
    resp.getWriter().flush();
    resp.getWriter().close();

}

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {
    doPost(req, resp);
}

}
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