如何從Web服務引發異常？

Question

我正在使用netbeans來創建webservices，我想使用PBEL創建復合web服務，我在每個服務中拋出異常時遇到問題，我在我要拋出的異常的模式中定義了復雜的Type，我也在WSDL中創建它但是在服務內部，我不知道如何拋出異常，這是我正在處理的示例：

@WebService(serviceName = "CreditCardService", portName = "CreditCardPort", endpointInterface = "org.netbeans.j2ee.wsdl.creditcard.CreditCardPortType", targetNamespace = "http://j2ee.netbeans.org/wsdl/CreditCard", wsdlLocation = "WEB-INF/wsdl/NewWebServiceFromWSDL/CreditCard.wsdl")
public class NewWebServiceFromWSDL implements CreditCardPortType {

public org.netbeans.xml.schema.creditcard.CreditCardResponseType isCreditCardValid(org.netbeans.xml.schema.creditcard.CreditCardType creditCardInfoReq) throws IsCreditCardValidFault {

    List<CreditCardType> creditCards = parseCreditCardsFile();
    CreditCardResponseType creditCardResponseElement = new CreditCardResponseType();

    for (CreditCardType aCreditCard : creditCards) {

        if (creditCardInfoReq.getCreditCardNo() == Long.parseLong(String.valueOf(aCreditCard.getCreditCardNo())) {
            creditCardResponseElement.setValid(true);
            return creditCardResponseElement;
        }
    }
    throws  IsCreditCardValidFault();   //here I want to throw an exception .
}

請有人幫忙嗎？

Answer 1

throws  IsCreditCardValidFault();   //here I want to throw an exception .

需要寫成

throw new IsCreditCardValidFault();

throws用於您的方法聲明，其中throw關鍵字在方法內使用，以指示您將拋出異常的位置。

舉個例子

try {
   //do something which generates an exception
}catch(Exception e){
   throw e;
}

但在您的情況下，您希望自己啟動異常，因此您必須創建該異常類型的新對象。 您將自己創建異常，因此不需要包含在try / catch塊中。

throw new IsCreditCardValidFault();