無法將XML字符串解組到Java對象

Question

將xml字符串解組到Java對象會產生以下錯誤：

javax.xml.bind.UnmarshalException：意外元素（uri：“”，本地：“ AppServerResponse”）。 預期的元素是<{ http://www.coda.com/efinance/schemas/appserver } AppServerResponse>

這是AppServerResponse Java類

@XmlRootElement (name = "AppServerResponse", namespace = "http://www.coda.com/efinance/schemas/appserver")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "AppServerResponse", namespace = "http://www.coda.com/efinance/schemas/appserver", propOrder = {
    "getEnvironment",
    "listUserCompanies",
    "softToHardDate"
})
public class AppServerResponse  extends ServiceResponse
{

    @XmlElement(name = "GetEnvironment", namespace = "http://www.coda.com/efinance/schemas/appserver")

    protected GetEnvironmentResponseVerb getEnvironment;
    @XmlElement(name = "ListUserCompanies", namespace = "http://www.coda.com/efinance/schemas/appserver")
    protected ListUserCompaniesResponseVerb listUserCompanies;
    @XmlElement(name = "SoftToHardDate", namespace = "http://www.coda.com/efinance/schemas/appserver")

    protected SoftToHardDateResponseVerb softToHardDate;

解組功能和xml消息的代碼已解組：

String strResponse = "<AppServerResponse uri=\"http://www.coda.com/efinance/schemas/appserver\" version=\"2.0\" >"
                                + "<GetEnvironment>"
                                    + "<Response status=\"success\">"
                                        + "<Environment>"
                                            + "<CmpCode>TEST</CmpCode>"
                                            + "<CapCode>INTERFACE</CapCode>"
                                            + "<HomeCurr>EUR</HomeCurr>"
                                            + "<DateOrder>1</DateOrder>"
                                            + "<DateDisplay>1</DateDisplay>"
                                            + "<DateSep>/</DateSep>"
                                            + "<HomeCurrDps>2</HomeCurrDps>"
                                            + "<HomeCurrSymbol>€</HomeCurrSymbol>"
                                            + "<HomeCurrSymbolPos>before</HomeCurrSymbolPos>"
                                            + "<HomeCurrLinkType>no_link</HomeCurrLinkType>"
                                            + "<HomeCurrParent>EURO</HomeCurrParent>"
                                            + "<CurrentPeriod>2018/4</CurrentPeriod>"
                                            + "<CmpTimeStamp>11</CmpTimeStamp>"
                                            + "<CapTimeStamp>3</CapTimeStamp>"
                                            + "<UsrTimeStamp>12</UsrTimeStamp>"
                                            + "<ServerVersion>14.000.0014</ServerVersion>"
                                        + "</Environment>"
                                    + "</Response>"
                                + "</GetEnvironment>"
                            + "</AppServerResponse>";
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            dbf.setNamespaceAware(false);
            DocumentBuilder db;

            db = dbf.newDocumentBuilder();

            Document docResponse = db.parse(new InputSource(new StringReader(strResponse)));

            writeXmlDocumentToXmlFile(docResponse);

            JAXBContext contextResponse = JAXBContext.newInstance(responseClass);
            Unmarshaller u = contextResponse.createUnmarshaller();

            returnValue = u.unmarshal(docResponse);

Answer 1

您的JAXB批注指定您的元素位於http://www.coda.com/efinance/schemas/appserver命名空間中，但是ressponse String中的元素實際上不在命名空間中。 看來您打算通過設置默認名稱空間

String strResponse = "<AppServerResponse uri=\"http://www.coda.com/efinance/schemas/appserver\"..."

但是uri屬性實際上並沒有這樣做。 相反，您需要xmlns屬性：

String strResponse = "<AppServerResponse xmlns=\"http://www.coda.com/efinance/schemas/appserver\"..."

注意xmlns屬性名稱，而不是uri 。