a4j: mediaOutput не работает

Question

Я использую пример с сайта JBoss для загрузки изображений и их просмотра. Загрузка выполняется отлично, но показ изображений в работе a4j: mediaOutput dosen't. Может кто-нибудь сказать мне, в чем проблема. Благодаря

Мой код Вид:

<h:body> 
<h:form> 
    <h:panelGrid border="1" columns="2" columnClasses="top,top"> 
     <rich:fileUpload fileUploadListener="#{fileUploadBean.uploadsAvailable}" id="upload" 
      immediateUpload="#{fileUploadBean.autoUpload}" 
      acceptedTypes="jpg, gif, png, bmp" 
      allowFlash="#{fileUploadBean.useFlash}"> 
      <a4j:ajax render="info" event="uploadcomplete" /> 
     </rich:fileUpload> 

     <h:panelGroup id="info"> 
      <rich:panel bodyClass="info"> 
       <f:facet name="header"> 
        <h:outputText value="Uploaded Files Info" /> 
       </f:facet> 
       <h:outputText value="No files currently uploaded" 
        rendered="#{fileUploadBean.size==0}" /> 
       <rich:dataGrid columns="1" value="#{fileUploadBean.files}" 
        var="file" rowKeyVar="row"> 
        <rich:panel bodyClass="rich-laguna-panel-no-header"> 
         <h:panelGrid columns="2"> 
          <a4j:mediaOutput element="img" mimeType="#{file.mime}" 
           createContent="#{fileUploadBean.paint}" value="#{row}" 
           style="width:100px; height:100px;" cacheable="false"> 
           <f:param value="#{fileUploadBean.timeStamp}" name="time" /> 
          </a4j:mediaOutput> 
          <h:panelGrid columns="2"> 
           <h:outputText value="File Name:" /> 
           <h:outputText value="#{file.name}" /> 
           <h:outputText value="File Length(bytes):" /> 
           <h:outputText value="#{file.length}" /> 
          </h:panelGrid> 
         </h:panelGrid> 
        </rich:panel> 
       </rich:dataGrid> 
      </rich:panel>    
      <br /> 
      <a4j:commandButton action="#{fileUploadBean.clearUploadData}" 
       reRender="info, upload" value="Clear Uploaded Data" 
       rendered="#{fileUploadBean.size>0}" /> 
     </h:panelGroup>  
    </h:panelGrid> 
</h:form> 

Боб

public class FileUploadBean implements Serializable { 

private static final long serialVersionUID = 1L; 

private ArrayList<File> files = new ArrayList<File>(); 
private int uploadsAvailable = 5; 
private boolean autoUpload = false; 
private boolean useFlash = false; 
private int size; 


public int getSize() { 
    if (getFiles().size() > 0) { 
     return getFiles().size(); 
    } else { 
     return 0; 
    } 
} 

public FileUploadBean() { 
} 

public void paint(OutputStream stream, Object object) throws IOException { 
    stream.write(getFiles().get((Integer) object).getData()); 
    stream.close(); 
} 

public void listener(FileUploadEvent event) throws Exception { 
    UploadedFile item = event.getUploadedFile(); 
    File file = new File(); 
    file.setLength(item.getData().length); 
    file.setName(item.getName()); 
    file.setData(item.getData()); 
    files.add(file); 
    uploadsAvailable--; 
} 

public String clearUploadData() { 
    files.clear(); 
    setUploadsAvailable(5); 
    return null; 
} 

public long getTimeStamp() { 
    return System.currentTimeMillis(); 
} 

public ArrayList<File> getFiles() { 
    return files; 
} 

public void setFiles(ArrayList<File> files) { 
    this.files = files; 
} 

public int getUploadsAvailable() { 
    return uploadsAvailable; 
} 

public void setUploadsAvailable(int uploadsAvailable) { 
    this.uploadsAvailable = uploadsAvailable; 
} 

public boolean isAutoUpload() { 
    return autoUpload; 
} 

public void setAutoUpload(boolean autoUpload) { 
    this.autoUpload = autoUpload; 
} 

public boolean isUseFlash() { 
    return useFlash; 
} 

public void setUseFlash(boolean useFlash) { 
    this.useFlash = useFlash; 
} 

} 

и Класс файла:

public class File { 

private String Name; 
private String mime; 
private long length; 
private byte[] data; 

public byte[] getData() { 
    return data; 
} 

public void setData(byte[] data) { 
    this.data = data; 
} 

public String getName() { 
    return Name; 
} 

public void setName(String name) { 
    Name = name; 
    int extDot = name.lastIndexOf('.'); 
    if (extDot > 0) { 
     String extension = name.substring(extDot + 1); 
     if ("bmp".equals(extension)) { 
      mime = "image/bmp"; 
     } else if ("jpg".equals(extension)) { 
      mime = "image/jpeg"; 
     } else if ("gif".equals(extension)) { 
      mime = "image/gif"; 
     } else if ("png".equals(extension)) { 
      mime = "image/png"; 
     } else { 
      mime = "image/unknown"; 
     } 
    } 
} 

public long getLength() { 
    return length; 
} 

public void setLength(long length) { 
    this.length = length; 
} 

public String getMime() { 
    return mime; 
} 
} 

Answer 1

<rich:fileUpload fileUploadListener="#{fileUploadBean.uploadsAvailable}" 

У слушателя установлен неправильный метод. (Если вы переключаетесь с RichFaces 3 на 4, вы можете просто использовать current code вместо того, чтобы пытаться его перенести самостоятельно.)