1. 创建Spring Boot项目 并添加如下引入依赖

       <dependency>
           <groupId>white.fisher</groupId>
           <artifactId>alipay-starter</artifactId>
           <version>0.0.1</version>
       </dependency>

2. application.properties中配置支付宝相关属性

   alipay.gateway-url=
   alipay.app-id=
   alipay.merchantPrivateKey=
   alipay.format=json
   alipay.charset=UTF-8
   alipay.alipayPublicKey=
   alipay.signType=RSA2
   alipay.return_url=http://ip/alipay/callback/return
   alipay.notify_url=http://ip/alipay/callback/notify

3. 启动项目
   

4. 发起支付请求调起支付页面

   http://localhost:8080/alipay/pc/page/pay?outTradeNo=20181232103812831023123123&totalAmount=100&subject=支付测试

   

完整项目地址