|  |  | 
 |  |  | import java.io.ByteArrayInputStream; | 
 |  |  | import java.io.IOException; | 
 |  |  | import java.nio.charset.StandardCharsets; | 
 |  |  | import java.nio.file.Files; | 
 |  |  | import java.nio.file.Paths; | 
 |  |  | import java.security.*; | 
 |  |  | import java.security.cert.Certificate; | 
 |  |  | import java.security.cert.CertificateException; | 
 |  |  | 
 |  |  |         Integer refund = po.getRefund(); | 
 |  |  |  | 
 |  |  |         // 生成body | 
 |  |  |         Integer total = virtualCardSv.getRechargeAmountByOrderNumber(tradeNo); | 
 |  |  |         Double total = virtualCardSv.getRechargeAmountByOrderNumber(tradeNo); | 
 |  |  |         RefundRequest.Amount amount = new RefundRequest.Amount(); | 
 |  |  |         amount.setRefund(refund); | 
 |  |  |         amount.setTotal(total); |