我正在尝试将XML文件转换为POJO，但我收到以下错误：
'java.lang.ClassCastException: com.ibm.xml.xlxp.api.stax.events.StartDocumentImpl incompatible with javax.xml.stream.events.StartElement'
我正在使用websphere 6.1运行RAD 8.5。我使用的是Java 1.5和JAXB。所有适当的jar文件都在WEB_INF lib文件夹中。
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.EndElement;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;
import com.cvscaremark.eccr.domain.XMLInteraction;
public class XMLParseUtil {
static final String INTERACTION = "INTERACTION";
static final String SESSIONID = "SESSION_ID";
static final String CHANNEL = "CHAN_TYPE_CD";
static final String APPLICATION = "SYS_ID";
static final String INTERACTIONSOURCE = "CLT_CHAN_ID";
static final String INTERACTIONINIT = "MBR_PRTY_ID_1_LEVEL";
static final String CATEGORY = "SRVC_ID";
static final String TYPE = "INTRCTN_TYPE_CD";
static final String DATETIME = "CRT_TS";
static final String CONTACTID = "CORP_CHAN_ID";
static final String REFERENCEID = "RFRNC_KEY_ID";
static final String REFERENCENB = "RFRNC_KEY_NB";
static final String STATUS = "INTRCTN_RESULT_CD";
public List<XMLInteraction> readXML(String XMLFile){
List<XMLInteraction> XMLInteractions = new ArrayList<XMLInteraction>();
try {
// First create a new XMLInputFactory
XMLInputFactory inputFactory = XMLInputFactory.newInstance();
// Setup a new eventReader
InputStream in = new FileInputStream(XMLFile);
XMLEventReader eventReader = inputFactory.createXMLEventReader(in);
// Read the XML document
XMLInteraction xmlInteraction = null;
while (eventReader.hasNext()) {
XMLEvent event = eventReader.nextEvent();
if (event.isStartElement()) {
StartElement startElement = event.asStartElement();
// If we have a interaction element we create a new interaction
if (startElement.getName().getLocalPart() == (INTERACTION)) {
xmlInteraction = new XMLInteraction();
}
if (event.asStartElement().getName().getLocalPart().equals(SESSIONID) && xmlInteraction != null) {
event = eventReader.nextEvent();
xmlInteraction.setSessionID(event.asCharacters().getData());
}
if (event.asStartElement().getName().getLocalPart().equals(CHANNEL) && xmlInteraction != null) {
event = eventReader.nextEvent();
xmlInteraction.setChannel(event.asCharacters().getData());
}
if (event.asStartElement().getName().getLocalPart().equals(APPLICATION) && xmlInteraction != null) {
event = eventReader.nextEvent();
xmlInteraction.setApplication(event.asCharacters().getData());
}
if (event.asStartElement().getName().getLocalPart().equals(INTERACTIONSOURCE) && xmlInteraction != null) {
event = eventReader.nextEvent();
xmlInteraction.setInteraction_Source(event.asCharacters().getData());
}
if (event.asStartElement().getName().getLocalPart().equals(INTERACTIONINIT) && xmlInteraction != null) {
event = eventReader.nextEvent();
xmlInteraction.setInteraction_Initiator(event.asCharacters().getData());
}
if (event.asStartElement().getName().getLocalPart().equals(CATEGORY) && xmlInteraction != null) {
event = eventReader.nextEvent();
xmlInteraction.setCategory(event.asCharacters().getData());
}
if (event.asStartElement().getName().getLocalPart().equals(TYPE) && xmlInteraction != null) {
event = eventReader.nextEvent();
}
if (event.asStartElement().getName().getLocalPart().equals(DATETIME) && xmlInteraction != null) {
event = eventReader.nextEvent();
xmlInteraction.setDateTime(event.asCharacters().getData());
}
if (event.asStartElement().getName().getLocalPart().equals(CONTACTID) && xmlInteraction != null) {
event = eventReader.nextEvent();
xmlInteraction.setContactID(event.asCharacters().getData());
}
if (event.asStartElement().getName().getLocalPart().equals(REFERENCEID) && xmlInteraction != null) {
event = eventReader.nextEvent();
xmlInteraction.setReference(event.asCharacters().getData());
continue;
}
if (event.asStartElement().getName().getLocalPart().equals(STATUS) && xmlInteraction != null) {
event = eventReader.nextEvent();
xmlInteraction.setResultStatus(event.asCharacters().getData());
continue;
}
}
// If we reach the end of an item element we add it to the list
if (event.isEndElement()) {
EndElement endElement = event.asEndElement();
if (endElement.getName().getLocalPart() == (INTERACTION)) {
XMLInteractions.add(xmlInteraction);
}
}
}
}
catch (FileNotFoundException e) {
e.printStackTrace();
} catch (XMLStreamException e) {
e.printStackTrace();
}
return XMLInteractions;
}
}
这是我的POJO：
import java.util.ArrayList;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
@XmlRootElement(name = "INTERACTION")
public class XMLInteraction {
private String sessionID;
private String channel;
private String application;
private String interaction_Source;
private String interaction_Initiator;
private String category;
private String type;
private String dateTime;
private String contactID;
private String reference;
private String resultStatus;
/**
* @return
*/
public String getSessionID() {
return sessionID;
}
/**
* @param sessionID
*/
@XmlElement(name="SESSION_ID")
public void setSessionID(String sessionID) {
this.sessionID = sessionID;
}
/**
* @return
*/
public String getChannel() {
return channel;
}
/**
* @param channel
*/
@XmlElement(name="CHAN_TYPE_CD")
public void setChannel(String channel) {
this.channel = channel;
}
/**
* @return
*/
public String getApplication() {
return application;
}
/**
* @param application
*/
@XmlElement(name="SYS_ID")
public void setApplication(String application) {
this.application = application;
}
/**
* @return
*/
public String getInteraction_Source() {
return interaction_Source;
}
/**
* @param interaction_Source
*/
@XmlElement(name="CLT_CHAN_ID")
public void setInteraction_Source(String interaction_Source) {
this.interaction_Source = interaction_Source;
}
/**
* @return
*/
public String getInteraction_Initiator() {
return interaction_Initiator;
}
/**
* @param interaction_Initiator
*/
@XmlElement(name="MBR_PRTY_ID_1_LEVEL")
public void setInteraction_Initiator(String interaction_Initiator) {
this.interaction_Initiator = interaction_Initiator;
}
/**
* @return the category
*/
public String getCategory() {
return category;
}
/**
* @param category the category to set
*/
@XmlElement(name="SRVC_ID")
public void setCategory(String category) {
this.category = category;
}
/**
* @return the type
*/
public String getType() {
return type;
}
/**
* @param type the type to set
*/
@XmlElement(name="INTRCTN_TYPE_CD")
public void setType(String type) {
this.type = type;
}
/**
* @return the dateTime
*/
public String getDateTime() {
return dateTime;
}
/**
* @param dateTime the dateTime to set
*/
@XmlElement(name="CRT_TS")
public void setDateTime(String dateTime) {
this.dateTime = dateTime;
}
/**
* @return the contactID
*/
public String getContactID() {
return contactID;
}
/**
* @param contactID the contactID to set
*/
@XmlElement(name="CORP_CHAN_ID")
public void setContactID(String contactID) {
this.contactID = contactID;
}
/**
* @return the reference
*/
public String getReference() {
return reference;
}
/**
* @param reference the reference to set
*/
@XmlElement(name="RFRNC_KEY_NB")
public void setReference(String reference) {
this.reference = reference;
}
/**
* @return the resultStatus
*/
public String getResultStatus() {
return resultStatus;
}
/**
* @param resultStatus the resultStatus to set
*/
@XmlElement(name="INTRCTN_RESULT_CD")
public void setResultStatus(String resultStatus) {
this.resultStatus = resultStatus;
}
}
这是我的XML：
<?xml version="1.0"?>
<INTERACTIONS>
<INTERACTION>
<INTRCTN_KEY_ID>Id-006a5fa551b63f4c01007365</INTRCTN_KEY_ID>
<TRX_SEQ_NB>1</TRX_SEQ_NB>
<MBR_SEQ_NB>1</MBR_SEQ_NB>
<MBR_ID_1_LEVEL>13344</MBR_ID_1_LEVEL>
<SESSION_ID>12345</SESSION_ID>
<CHAN_TYPE_CD></CHAN_TYPE_CD>
<SYS_ID>CMP</SYS_ID>
<CLT_CHAN_ID></CLT_CHAN_ID>
<MBR_PRTY_ID_1_LEVEL></MBR_PRTY_ID_1_LEVEL>
<SRVC_ID></SRVC_ID>
<INTRCTN_TYPE_CD>Unknown</INTRCTN_TYPE_CD>
<CRT_TS>2013-6-10.14.4. 12. 352398000</CRT_TS>
<CORP_CHAN_ID></CORP_CHAN_ID>
<RFRNC_KEY_ID>54731123</RFRNC_KEY_ID>
<RFRNC_KEY_NB>1234</RFRNC_KEY_NB>
<INTRCTN_RESULT_CD>Unknown</INTRCTN_RESULT_CD>
</INTERACTION>
<INTERACTION>
<INTRCTN_KEY_ID>Id-006a5fa551b63f4c01007365</INTRCTN_KEY_ID>
<TRX_SEQ_NB>1</TRX_SEQ_NB>
<MBR_SEQ_NB>1</MBR_SEQ_NB>
<MBR_ID_1_LEVEL>13344</MBR_ID_1_LEVEL>
<SESSION_ID>12345</SESSION_ID>
<CHAN_TYPE_CD></CHAN_TYPE_CD>
<SYS_ID>CMP</SYS_ID>
<CLT_CHAN_ID></CLT_CHAN_ID>
<MBR_PRTY_ID_1_LEVEL></MBR_PRTY_ID_1_LEVEL>
<SRVC_ID></SRVC_ID>
<INTRCTN_TYPE_CD>Unknown</INTRCTN_TYPE_CD>
<CRT_TS>2013-6-10.14.4. 12. 352398000</CRT_TS>
<CORP_CHAN_ID></CORP_CHAN_ID>
<RFRNC_KEY_ID>54731123</RFRNC_KEY_ID>
<RFRNC_KEY_NB>1234</RFRNC_KEY_NB>
<INTRCTN_RESULT_CD>Unknown</INTRCTN_RESULT_CD>
</INTERACTION>
<INTRACTION>
<INTRCTN_KEY_ID>Id-006a5fa551b63f4c01007365</INTRCTN_KEY_ID>
<TRX_SEQ_NB>1</TRX_SEQ_NB>
<MBR_SEQ_NB>1</MBR_SEQ_NB>
<MBR_ID_1_LEVEL>13344</MBR_ID_1_LEVEL>
<SESSION_ID>12345</SESSION_ID>
<CHAN_TYPE_CD></CHAN_TYPE_CD>
<SYS_ID>CMP</SYS_ID>
<CLT_CHAN_ID></CLT_CHAN_ID>
<MBR_PRTY_ID_1_LEVEL></MBR_PRTY_ID_1_LEVEL>
<SRVC_ID></SRVC_ID>
<INTRCTN_TYPE_CD>Unknown</INTRCTN_TYPE_CD>
<CRT_TS>2013-6-10.14.4. 12. 352398000</CRT_TS>
<CORP_CHAN_ID></CORP_CHAN_ID>
<RFRNC_KEY_ID>54731123</RFRNC_KEY_ID>
<RFRNC_KEY_NB>1234</RFRNC_KEY_NB>
<INTRCTN_RESULT_CD>Unknown</INTRCTN_RESULT_CD>
</INTERACTION>
<INTERACTION>
<INTRCTN_KEY_ID>Id-006a5fa551b63f4c01007365</INTRCTN_KEY_ID>
<TRX_SEQ_NB>1</TRX_SEQ_NB>
<MBR_SEQ_NB>1</MBR_SEQ_NB>
<MBR_ID_1_LEVEL>13344</MBR_ID_1_LEVEL>
<SESSION_ID>12345</SESSION_ID>
<CHAN_TYPE_CD></CHAN_TYPE_CD>
<SYS_ID>CMP</SYS_ID>
<CLT_CHAN_ID></CLT_CHAN_ID>
<MBR_PRTY_ID_1_LEVEL></MBR_PRTY_ID_1_LEVEL>
<SRVC_ID></SRVC_ID>
<INTRCTN_TYPE_CD>Unknown</INTRCTN_TYPE_CD>
<CRT_TS>2013-6-10.14.4. 12. 352398000</CRT_TS>
<CORP_CHAN_ID></CORP_CHAN_ID>
<RFRNC_KEY_ID>54731123</RFRNC_KEY_ID>
<RFRNC_KEY_NB>1234</RFRNC_KEY_NB>
<INTRCTN_RESULT_CD>Unknown</INTRCTN_RESULT_CD>
</INTERACTION>
<INTERACTION>
<INTRCTN_KEY_ID>Id-006a5fa551b63f4c01007365</INTRCTN_KEY_ID>
<TRX_SEQ_NB>1</TRX_SEQ_NB>
<MBR_SEQ_NB>1</MBR_SEQ_NB>
<MBR_ID_1_LEVEL>13344</MBR_ID_1_LEVEL>
<SESSION_ID>12345</SESSION_ID>
<CHAN_TYPE_CD></CHAN_TYPE_CD>
<SYS_ID>CMP</SYS_ID>
<CLT_CHAN_ID></CLT_CHAN_ID>
<MBR_PRTY_ID_1_LEVEL></MBR_PRTY_ID_1_LEVEL>
<SRVC_ID></SRVC_ID>
<INTRCTN_TYPE_CD>Unknown</INTRCTN_TYPE_CD>
<CRT_TS>2013-6-10.14.4. 12. 352398000</CRT_TS>
<CORP_CHAN_ID></CORP_CHAN_ID>
<RFRNC_KEY_ID>54731123</RFRNC_KEY_ID>
<RFRNC_KEY_NB>1234</RFRNC_KEY_NB>
<INTRCTN_RESULT_CD>Unknown</INTRCTN_RESULT_CD>
</INTERACTION>
</INTERACTIONS>
我没有XSD或任何类型架构的可能性。部署Web应用程序时，它将点击“URL”并接收类似于上面的XML文档。
作为一个额外的问题，有没有办法将XML解组为几个嵌套的POJOS而不使用Castor等但只使用JAXB？
即使XML是作为平面文档提供的，我也需要将信息放入几个POJOS中，这些POJOS可以包含在另一个POJO中。例如，结构看起来像：
InteractionList将包含多个交互。
交互可以包含多个交易。
交易可以有多个参考和成员。
我必须再次从XML中推导出这个。
非常感谢提前。
完整的例外情况如下：
java.lang.ClassCastException: com.ibm.xml.xlxp.api.stax.events.StartDocumentImpl
incompatible with javax.xml.stream.events.StartElement
at
com.ibm.xml.xlxp.api.stax.events.XMLEventImpl.asStartElement(XMLEventImpl.java:239)
at com.cvscaremark.eccr.web.utilities.XMLParseUtil.readXML(XMLParseUtil.java:56)
at
test.java.com.cvscaremark.eccr.web.utilities.XMLParseUtilTest.testParseXML
(XMLParseUtilTest.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:615)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run
(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests
(RemoteTestRunner.java:467)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests
(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run
(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main
(RemoteTestRunner.java:197)
异常发生在： XMLParseUtil StartElement startElement = event.asStartElement（）;
并且下面标有星星：
package test.java.com.cvscaremark.eccr.web.utilities;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import com.cvscaremark.eccr.domain.XMLInteraction;
import com.cvscaremark.eccr.web.utilities.XMLParseUtil;
@RunWith(JUnit4.class)
public class XMLParseUtilTest {
@Test
public void testParseXML(){
XMLParseUtil read = new XMLParseUtil();
*** List<XMLInteraction> readXML = read.readXML("C:\\file.xml"); ***
for (XMLInteraction xmlInteraction : readXML) {
System.out.println(xmlInteraction);
}
}
}
答案 0 :(得分：0)
看起来你有一个不合规的StAX实现。您的错误不应该发生并且是一个错误。
使用isStartElement()检查事件后，方法asStartElement()不应抛出ClassCastException。
请与其他实施一起检查并提交错误。
答案 1 :(得分：0)
我会为INTERACTIONS做一个课程。
@XmlRootElement(name = "INTERACTIONS")
public class Interactions {
@XmlElementWrapper(name = "interactions")
@XmlElement(name = "INTERACTION")
...
顺便说一句JAXB看起来更容易。
阅读和撰写
public static <T> T loadXML(Class<T> klazz, File xmlFile) throws IOException {
try {
if (!xmlFile.canRead()) {
throw new JAXBException("FileNotFound; " + xmlFile.getPath());
}
JAXBContext jaxbContext = JAXBContext.newInstance(klazz);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
return klazz.cast(jaxbUnmarshaller.unmarshal(xmlFile));
} catch (JAXBException e) {
throw new IOException(e);
}
}
public static <T> void saveXML(Class<T> klazz, T object, File xmlFile) throws IOException {
if (object == null) {
return;
}
try {
JAXBContext jaxbContext = JAXBContext.newInstance(klazz);
Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
jaxbMarshaller.marshal(object, xmlFile);
} catch (JAXBException e) {
throw new IOException(e);
}
}