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Primefaces DataTable SortBy不起作用

2017-09-05 116 views
2

我需要你的幫助。我的項目中有一個奇怪的錯誤。我在我的xhtml中有一個primefaces數據表，它的列的sortBy屬性不起作用。當我調試我的代碼時，sortBy在BeanPropertyComparator類中看起來爲null。 tomcat的錯誤日誌寫在下面;

Primefaces DataTable SortBy不起作用

的Apache Tomcat 7.0.52登錄

java.lang.IllegalStateException: CDATA tags may not nest 
    at com.sun.faces.renderkit.html_basic.HtmlResponseWriter.startCDATA(HtmlResponseWriter.java:681) 
    at javax.faces.context.ResponseWriterWrapper.startCDATA(ResponseWriterWrapper.java:179) 
    at javax.faces.context.PartialResponseWriter.startError(PartialResponseWriter.java:341) 
    at org.primefaces.context.PrimePartialResponseWriter.startError(PrimePartialResponseWriter.java:109) 
    at com.sun.faces.context.AjaxExceptionHandlerImpl.handlePartialResponseError(AjaxExceptionHandlerImpl.java:202) 
    at com.sun.faces.context.AjaxExceptionHandlerImpl.handle(AjaxExceptionHandlerImpl.java:126) 
    at javax.faces.context.ExceptionHandlerWrapper.handle(ExceptionHandlerWrapper.java:100) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:119) 
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) 
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2441) 
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2430) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
    at java.lang.Thread.run(Thread.java:724)




的Apache Tomcat 7.0.52 

javax.faces.FacesException: java.lang.NullPointerException 
    at org.primefaces.model.BeanPropertyComparator.compare(BeanPropertyComparator.java:92) 
    at java.util.TimSort.countRunAndMakeAscending(TimSort.java:324) 
    at java.util.TimSort.sort(TimSort.java:189) 
    at java.util.TimSort.sort(TimSort.java:173) 
    at java.util.Arrays.sort(Arrays.java:659) 
    at java.util.Collections.sort(Collections.java:217) 
    at org.primefaces.component.datatable.feature.SortFeature.singleSort(SortFeature.java:148) 
    at org.primefaces.component.datatable.feature.SortFeature.encode(SortFeature.java:106) 
    at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:80) 
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924) 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863) 
    at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:559) 
    at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183) 
    at org.primefaces.component.api.UIData.visitTree(UIData.java:827) 
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700) 
    at javax.faces.component.UIForm.visitTree(UIForm.java:371) 
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700) 
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700) 
    at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:399) 
    at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:319) 
    at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:57) 
    at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:1004) 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) 
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:425) 
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) 
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) 
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2441) 
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2430) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
    at java.lang.Thread.run(Thread.java:724) 
Caused by: java.lang.NullPointerException 
    at org.primefaces.model.BeanPropertyComparator.compare(BeanPropertyComparator.java:58) 
    ... 48 more



當我調試的代碼，它涉及BeanPropertyComparator的 '比較' 的方法。參數sortBy似乎是'null'。 這個類和它的方法是這樣的; 

public class BeanPropertyComparator implements Comparator { 

    private ValueExpression sortBy; 
    private boolean asc; 
    private String var; 
    private MethodExpression sortFunction; 
    private boolean caseSensitive = false; 
    private Locale locale; 
    private Collator collator; 
    private int nullSortOrder; 

    public BeanPropertyComparator(ValueExpression sortBy, String var, SortOrder sortOrder, MethodExpression sortFunction, boolean caseSensitive, Locale locale, int nullSortOrder) { 
     this.sortBy = sortBy; 
     this.var = var; 
     this.asc = sortOrder.equals(SortOrder.ASCENDING); 
     this.sortFunction = sortFunction; 
     this.caseSensitive = caseSensitive; 
     this.locale = locale; 
     this.collator = Collator.getInstance(locale); 
     this.nullSortOrder = nullSortOrder; 
    } 

    @SuppressWarnings("unchecked") 
    public int compare(Object obj1, Object obj2) { 
     try { 
      FacesContext context = FacesContext.getCurrentInstance(); 

      context.getExternalContext().getRequestMap().put(var, obj1); 
      Object value1 = sortBy.getValue(context.getELContext()); 
      context.getExternalContext().getRequestMap().put(var, obj2); 
      Object value2 = sortBy.getValue(context.getELContext());

錯誤： ValueExpression sortBy成爲空

我XHTML頁面低於; 

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE html> 
<html xmlns="http://www.w3.org/1999/xhtml" 
     xmlns:ui="http://java.sun.com/jsf/facelets" 
     xmlns:h="http://java.sun.com/jsf/html" 
     xmlns:p="http://primefaces.org/ui" 
     xmlns:b="http://bootsfaces.net/ui" 
     xmlns:f="http://java.sun.com/jsf/core"> 


    <h:head> 


    </h:head> 

    <h:body> 

     <h:form id="formmm"> 

      <p:dataTable id="dt" 
         var="kullanici" 
         value="#{deneView.ortakKurumKullanicilar}" 
         rowKey="#{kullanici.id}"> 

       <f:facet name="header"> 
        #{etiketler.baslikKullanicilar} 
       </f:facet> 

       <p:column headerText="#{etiketler.tcKimlikNo}" 
          sortBy="#{kullanici.tckn}"> 
        <h:outputText value="#{kullanici.tckn}" /> 
       </p:column> 

       <p:column headerText="#{etiketler.adi}" 
          sortBy="#{kullanici.adi}" > 
        <h:outputText value="#{kullanici.adi}" /> 
       </p:column> 

       <p:column headerText="#{etiketler.soyadi}" 
          sortBy="#{kullanici.soyadi}" > 
        <h:outputText value="#{kullanici.soyadi}" /> 
       </p:column> 

      </p:dataTable> 


     </h:form> 



    </h:body> 

</html>


而查看我的XHTML的; 

@ManagedBean 
@ViewScoped 
public class DeneView implements Serializable{ 

    private List<DeneDomain> ortakKurumKullanicilar; 

    @PostConstruct 
    public void init() { 

     DeneDomain kullanici1 = new DeneDomain(); 
     kullanici1.setId(1L); 
     kullanici1.setAdi("Ahmet"); 
     kullanici1.setSoyadi("Candemir"); 
     kullanici1.setTckn("11111111111"); 
     DeneDomain kullanici2 = new DeneDomain(); 
     kullanici2.setId(2L); 
     kullanici2.setAdi("Mehmet"); 
     kullanici2.setSoyadi("Zahir"); 
     kullanici2.setTckn("34738946323"); 
     DeneDomain kullanici3 = new DeneDomain(); 
     kullanici3.setId(3L); 
     kullanici3.setAdi("Cem"); 
     kullanici3.setSoyadi("Anil"); 
     kullanici3.setTckn("23567890546"); 
     DeneDomain kullanici4 = new DeneDomain(); 
     kullanici4.setId(4L); 
     kullanici4.setAdi("Kazim"); 
     kullanici4.setSoyadi("Izit"); 
     kullanici4.setTckn("43256789000"); 
     DeneDomain kullanici5 = new DeneDomain(); 
     kullanici5.setId(5L); 
     kullanici5.setAdi("Nami"); 
     kullanici5.setSoyadi("Cagan"); 
     kullanici5.setTckn("52546546556"); 
     DeneDomain kullanici6 = new DeneDomain(); 
     kullanici6.setId(6L); 
     kullanici6.setAdi("Zeki"); 
     kullanici6.setSoyadi("Under"); 
     kullanici6.setTckn("14324324233"); 
     DeneDomain kullanici7 = new DeneDomain(); 
     kullanici7.setId(7L); 
     kullanici7.setAdi("Deniz"); 
     kullanici7.setSoyadi("Fazli"); 
     kullanici7.setTckn("34454545455"); 

     ortakKurumKullanicilar = new ArrayList<>(); 
     ortakKurumKullanicilar.add(kullanici1); 
     ortakKurumKullanicilar.add(kullanici2); 
     ortakKurumKullanicilar.add(kullanici3); 
     ortakKurumKullanicilar.add(kullanici4); 
     ortakKurumKullanicilar.add(kullanici5); 
     ortakKurumKullanicilar.add(kullanici6); 
     ortakKurumKullanicilar.add(kullanici7); 
    } 

    public List<DeneDomain> getOrtakKurumKullanicilar() { 
     return ortakKurumKullanicilar; 
    } 

    public void setOrtakKurumKullanicilar(List<DeneDomain> ortakKurumKullanicilar) { 
     this.ortakKurumKullanicilar = ortakKurumKullanicilar; 
    } 

}

編輯

來源

2017-09-05 bekair

+1

請提供代碼。 XHTML和JSF！ – Makky

+1

@Makky：總是要求[mcve]。只需在您的評論中輸入[mcve]（不含空格） – Kukeltje

+0

@Makky：我編輯了我的問題。 – bekair

回答

0

我解決了這個問題。 Primefaces dataTable的屬性不起作用。問題在於將ValueExpression sortBy的值從xhtml發送到'比較'方法的BeanPropertyComparator類的primefaces。 SortBy值變爲null。我明白，問題不是關於primefaces，而是關於jsf 2.2。 javax.faces2.2.jar jar是由maven repository添加的，但它被破壞了。當我右鍵單擊由maven（pom.xml）創建的依賴項時，選擇手動安裝工件選項並更改由於另一個正常（不是maven）項目而下載的jar。現在它對我來說工作正常，但解決後出現了另一個問題。 filterBy後，如果我沒有刪除條目進行過濾，我無法再次對錶格進行排序，直到刪除條目時，所有數據都被消除。我瞭解到它是可序列化的接口。我用dataTable的value屬性列出的域類必須實現Serializable接口。在我的項目中還有一個WebService部分，它有域類。我應該在Web項目中使用這些類，但它不能將域看作Serializable，儘管它們是可序列化的。

來源

2017-09-29 20:05:32 bekair

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