У меня есть страница xhtml, и в ней я использую информацию, хранящуюся в бэкэнде. но мне нужно выполнить некоторую операцию в компоновке бобов до использования xhtml. операция состоит из извлечения данных из базы данных.
затем я использую метод для этой операции и назвал его search
и аннотировал его с помощью @PostConstruct. но когда я называю мою страницу Xhtml я получаю следующее исключение:Недопустимая аннотация для PostConstruct
type Exception report
message An error occurred performing resource injection on managed bean MemberSearchControler
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: An error occurred performing resource injection on managed bean MemberSearchControler
javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)
root cause
com.sun.faces.mgbean.ManagedBeanCreationException: An error occurred performing resource injection on managed bean MemberSearchControler
com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:227)
com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:103)
com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409)
com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269)
com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244)
com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116)
com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:69)
org.apache.el.parser.AstValue.getValue(AstValue.java:112)
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
javax.faces.component.UIData.getValue(UIData.java:732)
javax.faces.component.UIData.getDataModel(UIData.java:1811)
javax.faces.component.UIData.setRowIndexWithoutRowStatePreserved(UIData.java:484)
javax.faces.component.UIData.setRowIndex(UIData.java:473)
com.sun.faces.renderkit.html_basic.TableRenderer.encodeBegin(TableRenderer.java:82)
javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:864)
javax.faces.component.UIData.encodeBegin(UIData.java:1133)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1894)
javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1896)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1899)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1899)
com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:451)
com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
org.apache.myfaces.tomahawk.application.ResourceViewHandlerWrapper.renderView(ResourceViewHandlerWrapper.java:169)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
root cause
com.sun.faces.spi.InjectionProviderException: java.lang.IllegalArgumentException: Invalid PostConstruct annotation
com.sun.faces.vendor.Tomcat6InjectionProvider.invokePostConstruct(Tomcat6InjectionProvider.java:120) com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:221) com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:103) com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409) com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269) com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244) com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116) com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:69) org.apache.el.parser.AstValue.getValue(AstValue.java:112) org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) javax.faces.component.UIData.getValue(UIData.java:732) javax.faces.component.UIData.getDataModel(UIData.java:1811) javax.faces.component.UIData.setRowIndexWithoutRowStatePreserved(UIData.java:484) javax.faces.component.UIData.setRowIndex(UIData.java:473) com.sun.faces.renderkit.html_basic.TableRenderer.encodeBegin(TableRenderer.java:82) javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:864) javax.faces.component.UIData.encodeBegin(UIData.java:1133) javax.faces.component.UIComponent.encodeAll(UIComponent.java:1894) javax.faces.render.Renderer.encodeChildren(Renderer.java:176) javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889) javax.faces.component.UIComponent.encodeAll(UIComponent.java:1896) javax.faces.component.UIComponent.encodeAll(UIComponent.java:1899) javax.faces.component.UIComponent.encodeAll(UIComponent.java:1899) com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:451) com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) org.apache.myfaces.tomahawk.application.ResourceViewHandlerWrapper.renderView(ResourceViewHandlerWrapper.java:169) com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) root cause
java.lang.IllegalArgumentException: Invalid PostConstruct annotation org.apache.catalina.util.DefaultAnnotationProcessor.postConstruct(DefaultAnnotationProcessor.java:85) com.sun.faces.vendor.Tomcat6InjectionProvider.invokePostConstruct(Tomcat6InjectionProvider.java:118) com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:221) com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:103) com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409) com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269) com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244) com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116) com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:69) org.apache.el.parser.AstValue.getValue(AstValue.java:112) org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) javax.faces.component.UIData.getValue(UIData.java:732) javax.faces.component.UIData.getDataModel(UIData.java:1811) javax.faces.component.UIData.setRowIndexWithoutRowStatePreserved(UIData.java:484) javax.faces.component.UIData.setRowIndex(UIData.java:473) com.sun.faces.renderkit.html_basic.TableRenderer.encodeBegin(TableRenderer.java:82) javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:864) javax.faces.component.UIData.encodeBegin(UIData.java:1133) javax.faces.component.UIComponent.encodeAll(UIComponent.java:1894) javax.faces.render.Renderer.encodeChildren(Renderer.java:176) javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889) javax.faces.component.UIComponent.encodeAll(UIComponent.java:1896) javax.faces.component.UIComponent.encodeAll(UIComponent.java:1899) javax.faces.component.UIComponent.encodeAll(UIComponent.java:1899) com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:451) com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) org.apache.myfaces.tomahawk.application.ResourceViewHandlerWrapper.renderView(ResourceViewHandlerWrapper.java:169) com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) note The full stack trace of the root cause is available in the Apache Tomcat/6.0.37 logs.
и это моя поддержка боб:
ManagedBean(name="MemberSearchControler")
@SessionScoped
public class MemebrSearchControl {
public MemebrSearchControl(){
System.out.println("Test");
}
private String text;
private List<Member> members;
//For Create CheckBox
private int[] membersId;
public int[] getMembersId() {
return membersId;
}
//For get Selected Member Id
private int[] selectedMembers;
public void setSelectedMember(int[] ids) {
selectedMembers=ids;
}
public List<Member> getMembers() {
return members;
}
public int getMembersCount() {
return membersCount;
}
private int membersCount;
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
@PostConstruct
public String search() throws DaoImplNotFoundException, DataSourceException{
MemberDao dao=(MemberDao) Factory.getDao(ConfigReader.getConfig().getProperty("dao.member"));
members=dao.list(1, 10);
membersId=new int[members.size()];
for(int i=0;i<members.size();i++)
membersId[i]=members.get(i).getId();
return "member";
}
}
он работает с вашим ответом, но как я могу обрабатывать исключение? любое решение для него? –
См. Обновление ответа. – skuntsel