如何解决未能封送 EJB 参数?
我向 EJB3
添加了一个新方法,但出现以下错误。我知道这是由于可序列化问题,但我无法更改对象,因为它来自外部库 org.apache.commons.beanutils
。
此外,我使用 Wildfly 11 作为服务器,使用带有 Java 8 的 Vaadin 18。
有什么解决方法吗?
java.lang.RuntimeException: WFLYEJB0054: Failed to marshal EJB parameters
at org.jboss.as.ejb3.remote.LocalEjbReceiver.clone(LocalEjbReceiver.java:385)
at org.jboss.as.ejb3.remote.LocalEjbReceiver.clone(LocalEjbReceiver.java:365)
at org.jboss.as.ejb3.remote.LocalEjbReceiver$cloningResultProducer.getResult(LocalEjbReceiver.java:304)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:567)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:503)
at org.jboss.ejb.protocol.remote.RemotingEJBClientInterceptor.handleInvocationResult(RemotingEJBClientInterceptor.java:56)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:569)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:503)
at org.jboss.ejb.client.TransactionPostdiscoveryInterceptor.handleInvocationResult(TransactionPostdiscoveryInterceptor.java:133)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:569)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:503)
at org.jboss.ejb.client.discoveryEJBClientInterceptor.handleInvocationResult(discoveryEJBClientInterceptor.java:118)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:569)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:503)
at org.jboss.ejb.client.NamingEJBClientInterceptor.handleInvocationResult(NamingEJBClientInterceptor.java:78)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:569)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:503)
at org.jboss.ejb.client.TransactionInterceptor.handleInvocationResult(TransactionInterceptor.java:172)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:569)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:503)
at org.jboss.ejb.client.EJBClientInvocationContext.awaitResponse(EJBClientInvocationContext.java:907)
at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:165)
at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:100)
at com.sun.proxy.$Proxy155.findRecordsInTable(UnkNown Source)
EJB
@Stateless
@Remote(QueriesRemote.class)
@org.jboss.ejb3.annotation.TransactionTimeout(value = 20,unit = TimeUnit.MINUTES)
public class Queries extends Base implements QueriesRemote{
@PersistenceContext
private EntityManager manager;
@Resource(mappedname="java:/TedingDS")
private javax.sql.DataSource db;
@Resource
SessionContext ctx;
public List<DynaBean> findRecordsInTable(String querySource){
List<DynaBean> beanList = Collections.EMPTY_LIST;
try (ResultSet myResult = db.getConnection().createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY).executeQuery(querySource)) {
RowSetDynaClass rsdc = new RowSetDynaClass(myResult,false);
beanList = rsdc.getRows();
closeAllViaResultSet(myResult);
} catch (sqlException e) {
logger.log(Level.SEVERE,"From class:".concat(this.getClass().getName()));
}
return beanList;
}
}
我怎么称呼它
@Route(value = QueriesView.ROUTE,layout = MainLayout.class)
@PageTitle(QueriesView.TITLE)
public class QueriesView extends VerticalLayout implements BeforeEnterObserver,BeforeLeaveObserver,AfterNavigationObserver,LocaleChangeObserver,HasUrlParameter<String> {
private final Logger LOGGER = Logger.getLogger(this.getClass().getName());
public static final String ROUTE = "queryView";
public static final String TITLE = "Query";
@EJB
public QueriesRemote remote;
public QueriesView() {}
@Override
public void beforeEnter(BeforeEnterEvent beforeEnterEvent) {
LOGGER.info("beforeEnter queryView");
if(remote == null)
Notification.show("beforeEnter remote == null");
else {
List<DynaBean> list = remote.findRecordsInTable("select * from attached limit 5");
Notification.show("Size beforeEnter:".concat(String.valueOf(list.size())),5000,Notification.Position.MIDDLE);
}
}
}
解决方法
感谢@areus
我只是使用了 @Local
接口而不是 @Remote
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