UI 中的 Guidewire 异常处理

Question

when internal Guidewire code throws an exception you get a nicely formatted error message box. However, when custom code throws an exception you are directed to the error page (with the red stack trace text & back to application button). Is there anything in the Guidewire framework to make proper UI handling of errors nicer?

such as: < TextBox value="user.someMethod()"/>

//someMethod code...
try{
    return user.someOtherCode()
}catch(e : Exception){
    //TODO: gracefully display erorr mesage on page
    //e.g.   showErrorMessage()
    return null
}

Answer 1

After some searching through Guidewire OOTB code UserDisplayableExceptions are what you need - answering myself in case someone else has this thought.

function goToPolicy(bulkDocumentDownload : BulkDocDownload_Avi) {
  try {
    throw new IndexOutOfBoundsException("Ops! some index out of bounds exception was thrown")
  } catch (e : Exception) {
    throw new com.guidewire.pl.web.controller.UserDisplayableException(e.Message)
  }
}