Using browse.jsp to display content name on JSP

[vsoman84]

Hi All,
I am working on the page 'browse.jsp' to implement a customization of mine wherin in the "details" view, inclusion of checkboxes besides the document names and their checking and submission will result in thier display in a subsequent JSP.
Here is my code snippet from line no 411 of 'browse.jsp'
BeanForSendMultiple.java is my backing bean.

<%– Primary column for details view mode –%><a:column id="col10" primary="true" style="padding:2px;text-align:left" rendered="#{BrowseBean.browseViewMode == 'details'}"><f:facet name="header"><a:sortLink id="col10-sort" label="#{msg.name}" value="name" mode="case-insensitive" styleClass="header"/></f:facet><h:dataTable binding="#{BeanForSendMultiple.dataTable}"                              value="#{BeanForSendMultiple.nameDetails}" var="loc">                    <h:column>                        <h:selectBooleanCheckbox value="#{loc.selected}"/>                        <h:outputText value="#{loc.docContentName}"/>                    </h:column>                </h:dataTable><a:actionLink id="col10-act2" value="#{r.name}" href="#{r.url}" target="new" > <f:param name="documentDetails" value="#{r.name}" /> </a:actionLink><r:lockIcon id="col10-lock" value="#{r.nodeRef}" align="absmiddle" /><h:outputLabel id="col10-lang" value="#{r.lang}" styleClass="langCode" rendered="#{r.lang != null}" /><r:nodeInfo id="col10-info" value="#{r.id}"><h:graphicImage id="col10-img" url="/images/icons/popup.gif" styleClass="popupImage" width="16" height="16" /></r:nodeInfo></a:column>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Here is my backing bean BeanForSendMultiple

public class BeanForSendMultiple {    private List<NamesDetails> nameDetails;    private String []documentDetails;    private HtmlDataTable dataTable;        private NamesDetails nameFurtherDetails = new NamesDetails();                public BeanForSendMultiple(){        nameDetails = new ArrayList<NamesDetails>();                               NamesDetails nameFurtherDetails1 = new NamesDetails();                                   for(int k=0;k<=documentDetails.length;k++){               nameFurtherDetails1.setDocContentName(documentDetails[k]);                              }           nameDetails.add(nameFurtherDetails1);    }            public HtmlDataTable getDataTable() {        return dataTable;    }    public void setDataTable(HtmlDataTable dataTable) {        this.dataTable = dataTable;    }     public List<NamesDetails> getNameDetails() {        return nameDetails;    }       public void setNameDetails(List<NamesDetails> nameDetails) {        this.nameDetails = nameDetails;    }                            public String submit(){        Iterator iterator = nameDetails.iterator();        while (iterator.hasNext())        {            nameFurtherDetails = (NamesDetails)iterator.next();            System.out.print(nameFurtherDetails.isSelected());            System.out.print(nameFurtherDetails.getDocContentName());        }        return "dataTableCheckBox";    }     public String[] getDocumentDetails() {       return documentDetails;    }                    public void setDocumentDetails(String documentDetails[]) {        this.documentDetails = documentDetails;    }}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

and here are the getters and setters for the document

public class NamesDetails implements Serializable{    private static final long serialVersionUID = 7526471155622776147L;    private boolean selected;    private String docContentName;        public boolean isSelected() {        return selected;    }             public void setSelected(boolean selected) {        this.selected = selected;    }      public String getDocContentName() {       return docContentName;    }            public void setDocContentName(String docContentName) {        this.docContentName = docContentName;    } }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

But on running the application i am getting the following stack trace: The issue being a NullPointer exception in obtaining documentDetails.length from the BeanForSendMultiple

javax.faces.FacesException: An exception occurred processing JSP page /jsp/browse/browse.jsp at line 430427: <a:sortLink id="col10-sort" label="#{msg.name}" value="name" mode="case-insensitive" styleClass="header"/>428: </f:facet>429: 430: <h:dataTable binding="#{BeanForSendMultiple.dataTable}" 431: value="#{BeanForSendMultiple.nameDetails}" var="loc">432: <h:column>433: <h:selectBooleanCheckbox value="#{loc.selected}"/>Stacktrace:caused by:org.apache.jasper.JasperException: An exception occurred processing JSP page /jsp/browse/browse.jsp at line 430427: <a:sortLink id="col10-sort" label="#{msg.name}" value="name" mode="case-insensitive" styleClass="header"/>428: </f:facet>429: 430: <h:dataTable binding="#{BeanForSendMultiple.dataTable}" 431: value="#{BeanForSendMultiple.nameDetails}" var="loc">432: <h:column>433: <h:selectBooleanCheckbox value="#{loc.selected}"/>Stacktrace:caused by:javax.faces.el.EvaluationException: Cannot get value for expression '#{BeanForSendMultiple.dataTable}'caused by:java.lang.NullPointerExceptionHide Detailsjavax.faces.FacesException: An exception occurred processing JSP page /jsp/browse/browse.jsp at line 430427: <a:sortLink id="col10-sort" label="#{msg.name}" value="name" mode="case-insensitive" styleClass="header"/>428: </f:facet>429: 430: <h:dataTable binding="#{BeanForSendMultiple.dataTable}" 431: value="#{BeanForSendMultiple.nameDetails}" var="loc">432: <h:column>433: <h:selectBooleanCheckbox value="#{loc.selected}"/>Stacktrace: at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:425) at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:211) at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41) at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.alfresco.web.app.servlet.AuthenticationFilter.doFilter(AuthenticationFilter.java:110) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.alfresco.repo.management.subsystems.ChainingSubsystemProxyFactory$1.invoke(ChainingSubsystemProxyFactory.java:122) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at $Proxy185.doFilter(Unknown Source) at org.alfresco.repo.web.filter.beans.BeanProxyFilter.doFilter(BeanProxyFilter.java:88) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.alfresco.repo.web.filter.beans.NullFilter.doFilter(NullFilter.java:74) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.alfresco.repo.management.subsystems.ChainingSubsystemProxyFactory$1.invoke(ChainingSubsystemProxyFactory.java:122) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at $Proxy185.doFilter(Unknown Source) at org.alfresco.repo.web.filter.beans.BeanProxyFilter.doFilter(BeanProxyFilter.java:88) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619) Caused by: org.apache.jasper.JasperException: An exception occurred processing JSP page /jsp/browse/browse.jsp at line 430427: <a:sortLink id="col10-sort" label="#{msg.name}" value="name" mode="case-insensitive" styleClass="header"/>428: </f:facet>429: 430: <h:dataTable binding="#{BeanForSendMultiple.dataTable}" 431: value="#{BeanForSendMultiple.nameDetails}" var="loc">432: <h:column>433: <h:selectBooleanCheckbox value="#{loc.selected}"/>Stacktrace: at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:419) … 40 more Caused by: javax.faces.el.EvaluationException: Cannot get value for expression '#{BeanForSendMultiple.dataTable}' at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:405) at org.apache.myfaces.application.ApplicationImpl.createComponent(ApplicationImpl.java:427) at javax.faces.webapp.UIComponentTag.createComponentInstance(UIComponentTag.java:709) at javax.faces.webapp.UIComponentTag.findComponent(UIComponentTag.java:596) at javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:315) at org.apache.jsp.jsp.browse.browse_jsp._jspx_meth_h_005fdataTable_005f0(browse_jsp.java:5137) at org.apache.jsp.jsp.browse.browse_jsp._jspx_meth_a_005fcolumn_005f9(browse_jsp.java:5034) at org.apache.jsp.jsp.browse.browse_jsp._jspx_meth_a_005frichList_005f1(browse_jsp.java:4836) at org.apache.jsp.jsp.browse.browse_jsp._jspx_meth_a_005fpanel_005f7(browse_jsp.java:4751) at org.apache.jsp.jsp.browse.browse_jsp._jspService(browse_jsp.java:905) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) … 50 more Caused by: java.lang.NullPointerException at org.alfresco.web.bean.BeanForSendMultiple.<init>(BeanForSendMultiple.java:108) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at java.lang.Class.newInstance0(Class.java:355) at java.lang.Class.newInstance(Class.java:308) at org.apache.myfaces.shared_impl.util.ClassUtils.newInstance(ClassUtils.java:277) at org.apache.myfaces.shared_impl.util.ClassUtils.newInstance(ClassUtils.java:268) at org.apache.myfaces.config.ManagedBeanBuilder.buildManagedBean(ManagedBeanBuilder.java:49) at org.apache.myfaces.el.VariableResolverImpl.resolveVariable(VariableResolverImpl.java:314) at org.springframework.web.jsf.DelegatingVariableResolver.resolveVariable(DelegatingVariableResolver.java:108) at org.alfresco.web.app.AlfrescoVariableResolver.resolveVariable(AlfrescoVariableResolver.java:94) at org.apache.myfaces.el.ValueBindingImpl$ELVariableResolver.resolveVariable(ValueBindingImpl.java:570) at org.apache.commons.el.NamedValue.evaluate(NamedValue.java:124) at org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:140) at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:386) … 62 more ‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Could any one please guide me on my approach where i am missing out.
Thank You

[boutch55555]

Hi

I'm looking to do about the same thing. Did you find out what was wrong ?
My current approach is to use a javascript to send the selected values to the next .jsp page, which is working ok, but is more of a "dirty" way.

tkx

[ganeshkolhe]

Hi,
I guess you have to initialize your "dataTable" variable in Constructor BeanForSendMultiple .

[savic_prvoslav]

you need jquery and javascript,
every time when you click you need to submit not very fast solution.

solution is very simple I have implemented this so it is very fun think to add.

[cybermakoki]

Hi!

I'm doing the same thing and I'm getting the same error, I have intialized dataTable in my Constructor but still having the same problem…

has anybody find a solution?

i need a bit of help please