支付宝支付sdk解析

在调用支付宝前需要初始化config参数，在文件中输出需要的appid，秘钥，公钥等信息。。。。Configs.init("zfbinfo.properties");在初始化之后进行工厂模式进行实例化client；/** 使用Configs提供的默认参数* AlipayTradeService可以使用单例或者为静态成员对象，不需要反复new*/tradeService = new AlipayTradeServiceImpl.ClientBuilder().build();在这个实例化中调用的是这个方法：属于内部类ClientBuilder的一个方法；public static class ClientBuilder {private String gatewayUrl;private String appid;private String privateKey;private String format;private String charset;private String alipayPublicKey;private String signType;public ClientBuilder() {}public AlipayTradeServiceImpl build() {if(StringUtils.isEmpty(this.gatewayUrl)) {this.gatewayUrl = Configs.getOpenApiDomain();}if(StringUtils.isEmpty(this.appid)) {this.appid = Configs.getAppid();}if(StringUtils.isEmpty(this.privateKey)) {this.privateKey = Configs.getPrivateKey();}if(StringUtils.isEmpty(this.format)) {this.format = "json";}if(StringUtils.isEmpty(this.charset)) {this.charset = "utf-8";}if(StringUtils.isEmpty(this.alipayPublicKey)) {this.alipayPublicKey = Configs.getAlipayPublicKey();}if(StringUtils.isEmpty(this.signType)) {this.signType = Configs.getSignType();}return new AlipayTradeServiceImpl(this);//这个很重要 在调用bulid（）之后与会调用这个方法，这个方法会实例client--------------------- public AlipayTradeServiceImpl(AlipayTradeServiceImpl.ClientBuilder builder) {if(StringUtils.isEmpty(builder.getGatewayUrl())) {throw new NullPointerException("gatewayUrl should not be NULL!");} else if(StringUtils.isEmpty(builder.getAppid())) {throw new NullPointerException("appid should not be NULL!");} else if(StringUtils.isEmpty(builder.getPrivateKey())) {throw new NullPointerException("privateKey should not be NULL!");} else if(StringUtils.isEmpty(builder.getFormat())) {throw new NullPointerException("format should not be NULL!");} else if(StringUtils.isEmpty(builder.getCharset())) {throw new NullPointerException("charset should not be NULL!");} else if(StringUtils.isEmpty(builder.getAlipayPublicKey())) {throw new NullPointerException("alipayPublicKey should not be NULL!");} else if(StringUtils.isEmpty(builder.getSignType())) {throw new NullPointerException("signType should not be NULL!");} else {this.client = new DefaultAlipayClient(builder.getGatewayUrl(), builder.getAppid(), builder.getPrivateKey(), builder.getFormat(), builder.getCharset(), builder.getAlipayPublicKey(), builder.getSignType());}} //-------------------------------------------------------------------------}public AlipayTradeServiceImpl.ClientBuilder setAlipayPublicKey(String alipayPublicKey) {this.alipayPublicKey = alipayPublicKey;return this;}public AlipayTradeServiceImpl.ClientBuilder setAppid(String appid) {this.appid = appid;return this;}public AlipayTradeServiceImpl.ClientBuilder setCharset(String charset) {this.charset = charset;return this;}public AlipayTradeServiceImpl.ClientBuilder setFormat(String format) {this.format = format;return this;}public AlipayTradeServiceImpl.ClientBuilder setGatewayUrl(String gatewayUrl) {this.gatewayUrl = gatewayUrl;return this;}public AlipayTradeServiceImpl.ClientBuilder setPrivateKey(String privateKey) {this.privateKey = privateKey;return this;}public AlipayTradeServiceImpl.ClientBuilder setSignType(String signType) {this.signType = signType;return this;}public String getAlipayPublicKey() {return this.alipayPublicKey;}public String getSignType() {return this.signType;}public String getAppid() {return this.appid;}public String getCharset() {return this.charset;}public String getFormat() {return this.format;}public String getGatewayUrl() {return this.gatewayUrl;}public String getPrivateKey() {return this.privateKey;}}// 测试当面付2.0生成支付二维码public void test_trade_precreate() {// (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 = "tradeprecreate" + System.currentTimeMillis()+ (long) (Math.random() * 10000000L);// (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 = "xxx品牌xxx门店当面付扫码消费";// (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 = "0.01";// (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PIDString 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 = "购买商品3件共20.00元";// 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("208810000400500");// 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>();// 创建一个商品信息，参数含义分别为商品id（使用国标）、名称、单价（单位为分）、数量，如果需要添加商品类别，详见GoodsDetailGoodsDetail goods1 = GoodsDetail.newInstance("goods_id001", "xxx小面包", 1000, 1);// 创建好一个商品后添加至商品明细列表goodsDetailList.add(goods1);// 继续创建并添加第一条商品信息，用户购买的产品为“黑人牙刷”，单价为5.00元，购买了两件GoodsDetail goods2 = GoodsDetail.newInstance("goods_id002", "xxx牙刷", 500, 2);goodsDetailList.add(goods2);// 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("http://www.test-notify-")//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:log.info("支付宝预下单成功: )");AlipayTradePrecreateResponse response = result.getResponse();dumpResponse(response);// 需要修改为运行机器上的路径String filePath = String.format("/Users/MOBCB/Desktop/qr-%s.png",response.getOutTradeNo());log.info("filePath:" + filePath);ZxingUtils.getQRCodeImge(response.getQrCode(), 256, filePath);break;case FAILED:log.error("支付宝预下单失败!!!");break;case UNKNOWN:log.error("系统异常，预下单状态未知!!!");break;default:log.error("不支持的交易状态，交易返回异常!!!");break;}}