PrimeFaces 3.5文件上傳在Datatable

Question

我想爲<p:fileUpload>使用<p:cellEditor>。當我嘗試上傳文件時，它的格式爲null。這是如何造成的，我該如何解決這個問題？

我正在使用PrimeFaces 3.5和JSF 2.0。

這裏是視圖：

<p:dataTable id="question" var="question" value="#{editor.questions}" editable="true" widgetVar="carsTable" resizableColumns="true"> 
    <f:facet name="header">Economic</f:facet> 
    <p:ajax event="rowEdit" listener="#{editor.onEdit}" /> 
    <p:ajax event="rowToggle" listener="#{editor.onRowToggle}" /> 

    <p:column style="width:6%"> 
     <p:rowEditor /> 
    </p:column> 

    <p:column style="width:2%"> 
     <p:rowToggler /> 
    </p:column> 

    <p:column headerText="Performance Indicator" style="width:25%"> 
     <h:outputText value="#{question.performanceIndicator}" title="#{question.performanceIndicator}"/> 
    </p:column> 

    <p:column headerText="Description" style="heigh:200px;width:200px"> 
     <h:outputText value="#{question.description}" /> 
    </p:column> 

    <p:column headerText="CSR Label" style="width:25%"> 
     <h:outputText value="#{question.csrLabel}" /> 
    </p:column> 

    <p:column headerText="Response" style="width:25%"> 
     <p:cellEditor> 
      <f:facet name="output"> 
       <h:outputText value="#{question.response}" /> 
      </f:facet> 
      <f:facet name="input"> 
       <h:selectOneMenu value="#{question.response}" style="width:100%"> 
        <f:selectItem value="#{tableBean.manufacturers}" itemLabel="Yes" itemValue="Y" /> 
        <f:selectItem value="#{tableBean.manufacturers}" itemLabel="No" itemValue="N" /> 
        <f:selectItem value="#{tableBean.manufacturers}" itemLabel="Partial" itemValue="P" /> 
       </h:selectOneMenu> 
      </f:facet> 
     </p:cellEditor> 
    </p:column> 

    <p:column headerText="File" style="width:25%"> 
     <p:cellEditor> 
      <f:facet name="output"> 
       <h:outputText value="#{question.file.fileName}" /> 
      </f:facet> 
      <f:facet name="input"> 
       <p:fileUpload value="#{question.file}" mode="simple"/> 
      </f:facet> 
     </p:cellEditor> 
    </p:column> 

    <p:rowExpansion> 
     <h:panelGrid id="display" columns="2"> 
      <h:outputText id="model" value="#{question.description}" /> 
     </h:panelGrid> 
    </p:rowExpansion> 
</p:dataTable> 

---

更新：是的，它是一個<h:form>內。

下面是支持bean：

package org.zicon.web.jsf; 

import java.util.ArrayList; 
import java.util.List; 
import java.util.logging.Logger; 

import javax.faces.application.FacesMessage; 
import javax.faces.bean.ManagedBean; 
import javax.faces.bean.RequestScoped; 
import javax.faces.bean.ViewScoped; 
import javax.faces.context.FacesContext; 
import javax.faces.event.ActionEvent; 

import org.primefaces.event.CellEditEvent; 
import org.primefaces.event.FlowEvent; 
import org.primefaces.event.RowEditEvent; 
import org.primefaces.event.ToggleEvent; 
import org.primefaces.model.UploadedFile; 
import org.springframework.context.annotation.Scope; 
import org.springframework.stereotype.Component; 
import org.zicon.domain.GRI; 
import org.zicon.domain.User; 




@ManagedBean(name="userWizard") 
@RequestScoped 
public class UserWizard { 


    private List<GRI> questions; 
     private User user = new User(); 

     private boolean skip; 

     private String effect = "fade"; 

     private static Logger logger = Logger.getLogger(UserWizard.class.getName()); 

     public User getUser() { 
       return user; 
     } 

     public void setUser(User user) { 
       this.user = user; 
     } 

     public void save(ActionEvent actionEvent) { 
       //Persist user 

      for(GRI gri:questions) 
      { 
       System.out.println("Response"+gri.getResponse()); 
       System.out.println("File Name"+gri.getFile().getFileName()); 

      } 

       FacesMessage msg = new FacesMessage("Successful", "Welcome :" + user.getFirstname()); 
       FacesContext.getCurrentInstance().addMessage(null, msg); 
     } 

     public String getEffect() { 
       return effect; 
     } 

     public void setEffect(String effect) { 
       this.effect = effect; 
     } 

     public boolean isSkip() { 
       return skip; 
     } 

     public void setSkip(boolean skip) { 
       this.skip = skip; 
     } 

     public String onFlowProcess(FlowEvent event) { 
       logger.info("Current wizard step:" + event.getOldStep()); 
       logger.info("Next step:" + event.getNewStep()); 

       if(skip) 
         return "confirm"; 
       else 
         return event.getNewStep(); 
     } 

     public UserWizard() { 
      questions=new ArrayList<GRI>(); 
       GRI gri=new GRI(); 
       gri.setPerformanceIndicator("EC1"); 
       gri.setDescription("Direct economic value generated and distributed, including " + 
         "revenues, operating costs, employee compensation, donations and other community investments, " + 
         "retained earnings, and payments to capital providers and governments."); 
       gri.setCsrLabel("3.1"); 

       questions.add(gri); 

       GRI gri1=new GRI(); 
       gri1.setPerformanceIndicator("EC2"); 
       gri1.setDescription("Financial implications and other risks and opportunities for the organization's activities due to climate change"); 


       questions.add(gri1); 

       GRI gri2=new GRI(); 
       gri2.setPerformanceIndicator("EC1"); 
       gri2.setDescription("Direct economic value generated and distributed, including " + 
         "revenues, operating costs, employee compensation, donations and other community investments, " + 
         "retained earnings, and payments to capital providers and governments."); 
       gri2.setCsrLabel("3.1"); 

       questions.add(gri2); 

       GRI gri3=new GRI(); 
       gri3.setPerformanceIndicator("EC3"); 
       gri3.setDescription("Coverage of the organization's defined benefit plan obligations. "); 


       questions.add(gri3); 

       GRI gri4=new GRI(); 
       gri4.setPerformanceIndicator("EC4"); 
       gri4.setDescription("Significant financial assistance received from government. "); 


       questions.add(gri4); 

       GRI gri5=new GRI(); 
       gri5.setPerformanceIndicator("EC5"); 
       gri5.setDescription("Range of ratios of standard entry level wage compared to local minimum wage at significant" + 
         " locations of operation."); 
       gri5.setCsrLabel("1.2"); 

       questions.add(gri5); 



     } 

      public void onCellEdit(CellEditEvent event) { 
       Object oldValue = event.getOldValue(); 
       Object newValue = event.getNewValue(); 

       if(newValue != null && !newValue.equals(oldValue)) { 
        FacesMessage msg = new FacesMessage(FacesMessage.SEVERITY_INFO, "Cell Changed", "Old: " + oldValue + ", New:" + newValue); 
        FacesContext.getCurrentInstance().addMessage(null, msg); 
       } 
      } 

     public List<GRI> getQuestions() { 
      return questions; 
     } 

     public void setQuestions(List<GRI> questions) { 
      this.questions = questions; 
     } 

     public void onRowToggle(ToggleEvent event) { 
      FacesMessage msg = new FacesMessage(FacesMessage.SEVERITY_INFO, 
               "Row State " + event.getVisibility(), 
               "Model:"); 

      FacesContext.getCurrentInstance().addMessage(null, msg); 
     } 

     public void onEdit(RowEditEvent event) { 
       FacesMessage msg = new FacesMessage("Question Edited", ((GRI) event.getObject()).getResponse()); 

       GRI gri=((GRI) event.getObject()); 

       FacesContext.getCurrentInstance().addMessage(null, msg); 
      } 

     private UploadedFile file; 

      public UploadedFile getFile() { 
       return file; 
      } 

      public void setFile(UploadedFile file) { 
       this.file = file; 
      } 

      public void upload() { 
       if(file != null) { 
        FacesMessage msg = new FacesMessage("Succesful", file.getFileName() + " is uploaded."); 
        FacesContext.getCurrentInstance().addMessage(null, msg); 
       } 
      } 
} 

Answer 1

你有一個< H：形式>標籤包圍的JSF的代碼片段？否則，我在Primefaces dataTable中看不到任何明顯的問題。

可能你應該提供你的Bean（Java）代碼。

Answer 2

使用屬性fileUploadListener = 「＃{} Bean.handleFileUpload」在號碼：文件上傳

和豆製品：

public void handleFileUpload(FileUploadEvent event) throws FileNotFoundException, IOException { 
     upFile = event.getFile(); 
    }