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我是一名Java初學者,我試圖構建一個需要從XML文件讀取數據的Web服務。我使用這個示例XML:Java Web服務異常 - NullPointException
<message>Customer Name</message>
這是我的Web方法來讀取內部XML文本:
@WebMethod(operationName = "ProcessMessage")
public void ProcessMessage(@WebParam(name = "name") String strXML){
String strMessage="";
try {
String xmlString = strXML;
JAXBContext jc = JAXBContext.newInstance(String.class);
Unmarshaller unmarshaller = jc.createUnmarshaller();
StreamSource xmlSource = new StreamSource(new StringReader(xmlString));
JAXBElement<String> je = unmarshaller.unmarshal(xmlSource, String.class);
strMessage = je.getValue();
Response response = Response.status(200).build();
} catch (JAXBException ex) {
Logger.getLogger(service.class.getName()).log(Level.SEVERE, null, ex);
}
}
當運行Web服務,XML輸入例如從上面並單擊該按鈕它拋出一個異常:
WS00041: Service invocation threw an exception with message : null;
什麼是錯我的Web方法?
嘗試在catch塊中打印stacktrace並查看。 – Renjith 2014-10-06 11:55:39