如何从Web服务引发异常？

Question

我正在使用netbeans来创建webservices，我想使用PBEL创建复合web服务，我在每个服务中抛出异常时遇到问题，我在我要抛出的异常的模式中定义了复杂的Type，我也在WSDL中创建它但是在服务内部，我不知道如何抛出异常，这是我正在处理的示例：

@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 .
}

请有人帮忙吗？

Answer 1

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

需要写成

throw new IsCreditCardValidFault();

throws用于您的方法声明，其中throw关键字在方法内使用，以指示您将抛出异常的位置。

举个例子

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

但在您的情况下，您希望自己启动异常，因此您必须创建该异常类型的新对象。 您将自己创建异常，因此不需要包含在try / catch块中。

throw new IsCreditCardValidFault();