java - PayPal JAVA REST API：向用户显示异常友好消息

Question

PayPal JAVA REST API：如何向用户显示异常友好消息。

付款异常消息如下：

   Error: java.io.IOException: Response code: 400 Error response: 
{"name":"TRANSACTION_REFUSED","message":"The request was refused.
{0}","information_link":"https://developer.paypal.com/webapps/developer/docs/api/#
TRANSACTION_REFUSED","debug_id":"e4334e766671"}

PayPalRESTException 没有类似的 API：getFriendlyMessage()。

谢谢。