将支付宝的demo集成到java项目中（重点）

第一步：将zfbinfo.properties配置文件放在java项目的resources文件下

第二步：将demo中的sdk放在java项目的webapp下WEB-INF的lib下面，demo的其他的jar包，我们通过pom.xml进行引入进来，并保持版本的一致（备注：pom.xml引入的jar包在External Libraries下面可以看到）

注：为什么将sdk的jar放在lib下，与pom.xml的配置文件的插件相呼应，因为发布的时候（项目编译后）哪些pom.xml引入的包也会到lib下，达成一个统一

这个maven-compiler-plugin配置在pom.xml是非常重要的

     <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>1.7</source>
          <target>1.7</target>
          <encoding>UTF-8</encoding>
          <compilerArguments>
            <extdirs>${project.basedir}/src/main/webapp/WEB-INF/lib</extdirs>
          </compilerArguments>
        </configuration>
      </plugin>

第三步：将DemoHbRunner、Main拷贝到java项目中来，包名也设置为一样

第四步：将lib下的4个sdk的jar包加载到项目中去（选择JARS or ...）此方法加载本地jar

以上步骤操作完就集成好了，接下来的步骤就是填充业务代码，书写接口

第五步：在orderController书写

主要对接支付宝这3个主要接口

1、支付接口

2、查询订单支付状态接口

3、支付宝回调接口（这接口是支付宝来调取我们这接口）

----------------------------------------------------------------------------------------

----------------------------------------支付接口------------------------------------

-----------------------------------------------------------------------------------------

    @RequestMapping("pay.do")
    @ResponseBody
    public ServerResponse pay(HttpSession session, Long orderNo, HttpServletRequest request){
        User user = (User)session.getAttribute(Const.CURRENT_USER);
        if(user ==null){
            return ServerResponse.createByErrorCodeMessage(ResponseCode.NEED_LOGIN.getCode(),ResponseCode.NEED_LOGIN.getDesc());
        }
        String path = request.getSession().getServletContext().getRealPath("upload");
        return iOrderService.pay(orderNo,user.getId(),path);
    }

    

主要的逻辑在下面（重点、难点就在这里）

    public ServerResponse pay(Long orderNo,Integer userId,String path){
        Map<String ,String> resultMap = Maps.newHashMap();
        Order order = orderMapper.selectByUserIdAndOrderNo(userId,orderNo);
        if(order == null){
            return ServerResponse.createByErrorMessage("用户没有该订单");
        }
        resultMap.put("orderNo",String.valueOf(order.getOrderNo()));


//-----------------------------------------------------------------------------
//--------------以下内容是拷贝demo里面Main类的test_trade_pay方法
//-----------------------------------------------------------------------------

        // (必填) 商户网站订单系统中唯一订单号，64个字符以内，只能包含字母、数字、下划线，
        // 需保证商户系统端不能重复，建议通过数据库sequence生成，
        String outTradeNo = order.getOrderNo().toString();


        // (必填) 订单标题，粗略描述用户的支付目的。如“xxx品牌xxx门店当面付扫码消费”
        String subject = new StringBuilder().append("happymmall扫码支付,订单号:").append(outTradeNo).toString();


        // (必填) 订单总金额，单位为元，不能超过1亿元
        // 如果同时传入了【打折金额】,【不可打折金额】,【订单总金额】三者,则必须满足如下条件:【订单总金额】=【打折金额】+【不可打折金额】
        String totalAmount = order.getPayment().toString();


        // (可选) 订单不可打折金额，可以配合商家平台配置折扣活动，如果酒水不参与打折，则将对应金额填写至此字段
        // 如果该值未传入,但传入了【订单总金额】,【打折金额】,则该值默认为【订单总金额】-【打折金额】
        String undiscountableAmount = "0";



        // 卖家支付宝账号ID，用于支持一个签约账号下支持打款到不同的收款账号，(打款到sellerId对应的支付宝账号)
        // 如果该字段为空，则默认为与支付宝签约的商户的PID，也就是appid对应的PID
        String sellerId = "";

        // 订单描述，可以对交易或商品进行一个详细地描述，比如填写"购买商品2件共15.00元"
        String body = new StringBuilder().append("订单").append(outTradeNo).append("购买商品共").append(totalAmount).append("元").toString();


        // 商户操作员编号，添加此参数可以为商户操作员做销售统计
        String operatorId = "test_operator_id";

        // (必填) 商户门店编号，通过门店号和商家后台可以配置精准到门店的折扣信息，详询支付宝技术支持
        String storeId = "test_store_id";

        // 业务扩展参数，目前可添加由支付宝分配的系统商编号(通过setSysServiceProviderId方法)，详情请咨询支付宝技术支持
        ExtendParams extendParams = new ExtendParams();
        extendParams.setSysServiceProviderId("2088100200300400500");




        // 支付超时，定义为120分钟
        String timeoutExpress = "120m";

        // 商品明细列表，需填写购买商品详细信息，
        List<GoodsDetail> goodsDetailList = new ArrayList<GoodsDetail>();

        List<OrderItem> orderItemList = orderItemMapper.getByOrderNoUserId(orderNo,userId);
        for(OrderItem orderItem : orderItemList){
            GoodsDetail goods = GoodsDetail.newInstance(orderItem.getProductId().toString(), orderItem.getProductName(),
                    BigDecimalUtil.mul(orderItem.getCurrentUnitPrice().doubleValue(),new Double(100).doubleValue()).longValue(),
                    orderItem.getQuantity());
            goodsDetailList.add(goods);
        }

        // 创建扫码支付请求builder，设置请求参数
        AlipayTradePrecreateRequestBuilder builder = new AlipayTradePrecreateRequestBuilder()
                .setSubject(subject).setTotalAmount(totalAmount).setOutTradeNo(outTradeNo)
                .setUndiscountableAmount(undiscountableAmount).setSellerId(sellerId).setBody(body)
                .setOperatorId(operatorId).setStoreId(storeId).setExtendParams(extendParams)
                .setTimeoutExpress(timeoutExpress)
                .setNotifyUrl(PropertiesUtil.getProperty("alipay.callback.url"))//支付宝服务器主动通知商户服务器里指定的页面http路径,根据需要设置
                .setGoodsDetailList(goodsDetailList);


        AlipayF2FPrecreateResult result = tradeService.tradePrecreate(builder);
        switch (result.getTradeStatus()) {
            case SUCCESS:
                logger.info("支付宝预下单成功: )");

                AlipayTradePrecreateResponse response = result.getResponse();
                dumpResponse(response);

                File folder = new File(path);
                if(!folder.exists()){
                    folder.setWritable(true);
                    folder.mkdirs();
                }

                // 需要修改为运行机器上的路径
                //细节细节细节
                String qrPath = String.format(path+"/qr-%s.png",response.getOutTradeNo());
                String qrFileName = String.format("qr-%s.png",response.getOutTradeNo());
                ZxingUtils.getQRCodeImge(response.getQrCode(), 256, qrPath);

                File targetFile = new File(path,qrFileName);
                try {
                    FTPUtil.uploadFile(Lists.newArrayList(targetFile));
                } catch (IOException e) {
                    logger.error("上传二维码异常",e);
                }
                logger.info("qrPath:" + qrPath);
                String qrUrl = PropertiesUtil.getProperty("ftp.server.http.prefix")+targetFile.getName();
                resultMap.put("qrUrl",qrUrl);
                return ServerResponse.createBySuccess(resultMap);
            case FAILED:
                logger.error("支付宝预下单失败!!!");
                return ServerResponse.createByErrorMessage("支付宝预下单失败!!!");

            case UNKNOWN:
                logger.error("系统异常，预下单状态未知!!!");
                return ServerResponse.createByErrorMessage("系统异常，预下单状态未知!!!");

            default:
                logger.error("不支持的交易状态，交易返回异常!!!");
                return ServerResponse.createByErrorMessage("不支持的交易状态，交易返回异常!!!");
        }

    }




  // 简单打印应答
    private void dumpResponse(AlipayResponse response) {
        if (response != null) {
            logger.info(String.format("code:%s, msg:%s", response.getCode(), response.getMsg()));
            if (StringUtils.isNotEmpty(response.getSubCode())) {
                logger.info(String.format("subCode:%s, subMsg:%s", response.getSubCode(),
                        response.getSubMsg()));
            }
            logger.info("body:" + response.getBody());
        }
    }

第六步：在OrderItemMapper书写语句

 List<OrderItem> getByOrderNoUserId(@Param("orderNo")Long orderNo, @Param("userId")Integer userId);

    List<OrderItem> getByOrderNo(@Param("orderNo")Long orderNo);

第七步：在orderItemMapper.xml书写

 <select id="getByOrderNoUserId" parameterType="map" resultMap="BaseResultMap">
    SELECT
    <include refid="Base_Column_List"/>
    from mmall_order_item
    where order_no = #{orderNo}
    and user_id = #{userId}
  </select>

  <select id="getByOrderNo" parameterType="map" resultMap="BaseResultMap">
    SELECT
    <include refid="Base_Column_List"/>
    from mmall_order_item
    where order_no = #{orderNo}
  </select>



  <insert id="batchInsert" parameterType="list">
    insert into mmall_order_item (id, order_no,user_id, product_id,
      product_name, product_image, current_unit_price,
      quantity, total_price, create_time,
      update_time)
    values
    <foreach collection="orderItemList" index="index" item="item" separator=",">
      (
      #{item.id},#{item.orderNo},#{item.userId},#{item.productId},#{item.productName},#{item.productImage},#{item.currentUnitPrice},#{item.quantity},#{item.totalPrice},now(),now()
      )
    </foreach>
  </insert>

第八步：在oderMapper.xml书写语句

 <select id="selectByUserIdAndOrderNo" resultMap="BaseResultMap" parameterType="map">
    SELECT
    <include refid="Base_Column_List"></include>
    from mmall_order
    where order_no = #{orderNo}
    and user_id = #{userId}
  </select>

----------------------------------------------------------------------------------------

-----------------------------------支付宝回调接口--------------------------------

-----------------------------------------------------------------------------------------

第九步：书写controller

@RequestMapping("alipay_callback.do")
    @ResponseBody
    public Object alipayCallback(HttpServletRequest request){
        Map<String,String> params = Maps.newHashMap();

        Map requestParams = request.getParameterMap();
        for(Iterator 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]+",";
            }
            params.put(name,valueStr);
        }
        logger.info("支付宝回调,sign:{},trade_status:{},参数:{}",params.get("sign"),params.get("trade_status"),params.toString());

        //非常重要,验证回调的正确性,是不是支付宝发的.并且呢还要避免重复通知.

        params.remove("sign_type");
        try {
            boolean alipayRSACheckedV2 = AlipaySignature.rsaCheckV2(params, Configs.getAlipayPublicKey(),"utf-8",Configs.getSignType());

            if(!alipayRSACheckedV2){
                return ServerResponse.createByErrorMessage("非法请求,验证不通过,再恶意请求我就报警找网警了");
            }
        } catch (AlipayApiException e) {
            logger.error("支付宝验证回调异常",e);
        }

        //todo 验证各种数据


        //
        ServerResponse serverResponse = iOrderService.aliCallback(params);
        if(serverResponse.isSuccess()){
            return Const.AlipayCallback.RESPONSE_SUCCESS;
        }
        return Const.AlipayCallback.RESPONSE_FAILED;
    }

第十步：书写service

 public ServerResponse aliCallback(Map<String,String> params){
        Long orderNo = Long.parseLong(params.get("out_trade_no"));
        String tradeNo = params.get("trade_no");
        String tradeStatus = params.get("trade_status");
        Order order = orderMapper.selectByOrderNo(orderNo);
        if(order == null){
            return ServerResponse.createByErrorMessage("非商城的订单,回调忽略");
        }
        if(order.getStatus() >= Const.OrderStatusEnum.PAID.getCode()){
            return ServerResponse.createBySuccess("支付宝重复调用");
        }
        if(Const.AlipayCallback.TRADE_STATUS_TRADE_SUCCESS.equals(tradeStatus)){
            order.setPaymentTime(DateTimeUtil.strToDate(params.get("gmt_payment")));
            order.setStatus(Const.OrderStatusEnum.PAID.getCode());
            orderMapper.updateByPrimaryKeySelective(order);
        }

        PayInfo payInfo = new PayInfo();
        payInfo.setUserId(order.getUserId());
        payInfo.setOrderNo(order.getOrderNo());
        payInfo.setPayPlatform(Const.PayPlatformEnum.ALIPAY.getCode());
        payInfo.setPlatformNumber(tradeNo);
        payInfo.setPlatformStatus(tradeStatus);

        payInfoMapper.insert(payInfo);

        return ServerResponse.createBySuccess();
    }

第十一步：书写orderMapper

Order selectByOrderNo(Long orderNo);

第十二步：书写orderMapper.xml

    @RequestMapping("query_order_pay_status.do")
    @ResponseBody
    public ServerResponse<Boolean> queryOrderPayStatus(HttpSession session, Long orderNo){
        User user = (User)session.getAttribute(Const.CURRENT_USER);
        if(user ==null){
            return ServerResponse.createByErrorCodeMessage(ResponseCode.NEED_LOGIN.getCode(),ResponseCode.NEED_LOGIN.getDesc());
        }

        ServerResponse serverResponse = iOrderService.queryOrderPayStatus(user.getId(),orderNo);
        if(serverResponse.isSuccess()){
            return ServerResponse.createBySuccess(true);
        }
        return ServerResponse.createBySuccess(false);
    }

----------------------------------------------------------------------------------------

-----------------------------查询订单支付状态接口-----------------------------

-----------------------------------------------------------------------------------------

第十三步：书写controller

    @RequestMapping("query_order_pay_status.do")
    @ResponseBody
    public ServerResponse<Boolean> queryOrderPayStatus(HttpSession session, Long orderNo){
        User user = (User)session.getAttribute(Const.CURRENT_USER);
        if(user ==null){
            return ServerResponse.createByErrorCodeMessage(ResponseCode.NEED_LOGIN.getCode(),ResponseCode.NEED_LOGIN.getDesc());
        }

        ServerResponse serverResponse = iOrderService.queryOrderPayStatus(user.getId(),orderNo);
        if(serverResponse.isSuccess()){
            return ServerResponse.createBySuccess(true);
        }
        return ServerResponse.createBySuccess(false);
    }

第十四步：书写service

   public ServerResponse queryOrderPayStatus(Integer userId,Long orderNo){
        Order order = orderMapper.selectByUserIdAndOrderNo(userId,orderNo);
        if(order == null){
            return ServerResponse.createByErrorMessage("用户没有该订单");
        }
        if(order.getStatus() >= Const.OrderStatusEnum.PAID.getCode()){
            return ServerResponse.createBySuccess();
        }
        return ServerResponse.createByError();
    }