JavaEE 支付宝支付

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支付宝已经更新添封装好的签名方法,可以在自己的项目中直接调用进行签名,减少了自己手动签名产生的问题,主要是在进行方法调用时注意传参的要求,尤其是公钥使用的是支付宝的公钥,而不是APP的公钥。

支付宝支付使用SDK进行对接API，会比微信好很多，已经封装好了，不同请求对象对应不同响应对象。

1. 支付宝—双对称加密

支付宝与微信的不同之处：

1. 微信是通过xml以及签名进行数据保护
2. 支付宝是通过双对称加密进行数据保护

支付宝双对称加密：

1. 用户先使用 RSA密钥工具 生成自身一对用户的对称秘钥（公钥和秘钥）
2. 将公钥上传到支付宝（在创建应用时便会让用户提供）
3. 支付宝会根据上传到公钥生成一对 支付宝的对称秘钥（公钥和秘钥）

支付宝双对称加密使用方式：

1. 用户加签 的时候是用 用户的私钥
2. 用户解密 的时候是用 支付宝的公钥
3. 支付宝加签 的时候是用 支付宝的私钥
4. 支付宝解密 的时候是用 用户的公钥

详情图解:

2. 支付宝常用API接口

支付API：

• app支付接口2.0
• 手机网站支付接口2.0
• 统一收单交易退款查询
• 统一收单交易结算接口
• 统一收单交易关闭接口
• 统一收单交易撤销接口
• 统一收单交易退款接口
• 统一收单线下交易预创建
• 统一收单交易创建接口
• 统一收单交易支付接口
• 统一收单线下交易查询

3. Java Instance

普通调用示例

//实例化客户端
AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do", APP_ID, APP_PRIVATE_KEY, "json", CHARSET, ALIPAY_PUBLIC_KEY, "RSA2");
//实例化具体API对应的request类,类名称和接口名称对应,当前调用接口名称：alipay.open.public.template.message.industry.modify
AlipayOpenPublicTemplateMessageIndustryModifyRequest request = new AlipayOpenPublicTemplateMessageIndustryModifyRequest();
//SDK已经封装掉了公共参数，这里只需要传入业务参数
//此次只是参数展示，未进行字符串转义，实际情况下请转义
request.setBizContent("  {" +
"    \"primary_industry_name\":\"IT科技/IT软件与服务\"," +
"    \"primary_industry_code\":\"10001/20102\"," +
"    \"secondary_industry_code\":\"10001/20102\"," +
"    \"secondary_industry_name\":\"IT科技/IT软件与服务\"" +
" }");
AlipayOpenPublicTemplateMessageIndustryModifyResponse response = alipayClient.execute(request);
//调用成功，则处理业务逻辑
if(response.isSuccess()){//.....
}
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app支付接口2.0

AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");
AlipayTradeAppPayRequest request = new AlipayTradeAppPayRequest();
request.setBizContent("{" +
"\"timeout_express\":\"90m\"," +
"\"total_amount\":\"9.00\"," +
"\"seller_id\":\"2088102147948060\"," +
"\"product_code\":\"QUICK_MSECURITY_PAY\"," +
"\"body\":\"Iphone6 16G\"," +
"\"subject\":\"大乐透\"," +
"\"out_trade_no\":\"70501111111S001111119\"," +
"\"time_expire\":\"2016-12-31 10:05\"," +
"\"goods_type\":\"0\"," +
"\"promo_params\":\"{\\\"storeIdType\\\":\\\"1\\\"}\"," +
"\"passback_params\":\"merchantBizType%3d3C%26merchantBizNo%3d2016010101111\"," +
"\"royalty_info\":{" +
"\"royalty_type\":\"ROYALTY\"," +
"        \"royalty_detail_infos\":[{" +
"          \"serial_no\":1," +
"\"trans_in_type\":\"userId\"," +
"\"batch_no\":\"123\"," +
"\"out_relation_id\":\"20131124001\"," +
"\"trans_out_type\":\"userId\"," +
"\"trans_out\":\"2088101126765726\"," +
"\"trans_in\":\"2088101126708402\"," +
"\"amount\":0.1," +
"\"desc\":\"分账测试1\"," +
"\"amount_percentage\":\"100\"" +
"          }]" +
"    }," +
"\"extend_params\":{" +
"\"sys_service_provider_id\":\"2088511833207846\"," +
"\"hb_fq_num\":\"3\"," +
"\"hb_fq_seller_percent\":\"100\"," +
"\"industry_reflux_info\":\"{\\\\\\\"scene_code\\\\\\\":\\\\\\\"metro_tradeorder\\\\\\\",\\\\\\\"channel\\\\\\\":\\\\\\\"xxxx\\\\\\\",\\\\\\\"scene_data\\\\\\\":{\\\\\\\"asset_name\\\\\\\":\\\\\\\"ALIPAY\\\\\\\"}}\"," +
"\"card_type\":\"S0JP0000\"" +
"    }," +
"\"sub_merchant\":{" +
"\"merchant_id\":\"19023454\"," +
"\"merchant_type\":\"alipay: 支付宝分配的间连商户编号, merchant: 商户端的间连商户编号\"" +
"    }," +
"\"enable_pay_channels\":\"pcredit,moneyFund,debitCardExpress\"," +
"\"store_id\":\"NJ_001\"," +
"\"specified_channel\":\"pcredit\"," +
"\"disable_pay_channels\":\"pcredit,moneyFund,debitCardExpress\"," +
"\"settle_info\":{" +
"        \"settle_detail_infos\":[{" +
"          \"trans_in_type\":\"cardSerialNo\"," +
"\"trans_in\":\"A0001\"," +
"\"summary_dimension\":\"A0001\"," +
"\"amount\":0.1" +
"          }]" +
"    }," +
"\"invoice_info\":{" +
"\"key_info\":{" +
"\"is_support_invoice\":true," +
"\"invoice_merchant_name\":\"ABC|003\"," +
"\"tax_num\":\"1464888883494\"" +
"      }," +
"\"details\":\"[{\\\"code\\\":\\\"100294400\\\",\\\"name\\\":\\\"服饰\\\",\\\"num\\\":\\\"2\\\",\\\"sumPrice\\\":\\\"200.00\\\",\\\"taxRate\\\":\\\"6%\\\"}]\"" +
"    }," +
"\"ext_user_info\":{" +
"\"name\":\"李明\"," +
"\"mobile\":\"16587658765\"," +
"\"cert_type\":\"IDENTITY_CARD\"," +
"\"cert_no\":\"362334768769238881\"," +
"\"min_age\":\"18\"," +
"\"fix_buyer\":\"F\"," +
"\"need_check_info\":\"F\"" +
"    }," +
"\"business_params\":\"{\\\"data\\\":\\\"123\\\"}\"" +
"  }");
AlipayTradeAppPayResponse response = alipayClient.pageExecute(request);
if(response.isSuccess()){
System.out.println("调用成功");
} else {
System.out.println("调用失败");
}
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