j2ee的primefaces文件上传文件保存的目的地 [英] j2ee primefaces fileupload file saving destination

问题描述

今天我遇到了PrimeFaces FileUpload的问题。它工作的很好，但是这些文件存储在JBoss的临时目录中，所以无论我什么时候重新部署应用程序，或者只是将源代码提交到svn，我上传的所有图像都不见了。所以我想问一下，是否有办法将图像保存到war项目的source目录中。

我的handleFileUpload方法：

  public String getUrlBase（）{
 return FacesContext.getCurrentInstance（）。getExternalContext（）。getRealPath（// upload）; 
 
 $ b $ public void handleFileUpload（FileUploadEvent event）{
 new File（getUrlBase（）+/+ album.getId（））。mkdirs（）; 
 File result = new File（getUrlBase（）+/+ album.getId（）+/+ event.getFile（）。getFileName（））; 
 
尝试{
 FileOutputStream fileOutputStream = new FileOutputStream（result）; 
 
 byte [] buffer = new byte [BUFFER_SIZE]; 
 
 int bulk; 
 InputStream inputStream = event.getFile（）。getInputstream（）; 
 while（true）{
 bulk = inputStream.read（buffer）; 
 if（bulk <0）{
 break; 
} 
 fileOutputStream.write（buffer，0，bulk）; 
 fileOutputStream.flush（）; 
} 
 
 fileOutputStream.close（）; 
 inputStream.close（）; 
 
 FacesMessage msg = new FacesMessage（Succesful，
 event.getFile（）。getFileName（）+is uploaded。）; 
 FacesContext.getCurrentInstance（）。addMessage（null，msg）; 
 $ b $ catch（IOException e）{
 e.printStackTrace（）; 
 FacesMessage错误=新的FacesMessage（文件没有上传！）; 
 FacesContext.getCurrentInstance（）。addMessage（null，error）; 
 
 
 
 
 
 
编辑：另一个问题
 
 
我的查看文件： 
 
 
 < h：form enctype =multipart / form-data prependId = 假 > 
   update =messagessizeLimit =1073741824
 multiple =truelabel =chooseallowTypes = * .JPG; *。png格式; * GIF。 
 description =图片/> 
< / h：表格> 
  
当我添加update =messages到fileUpload时，我得到了
 
 
  javax.servlet.ServletException：null源
  
 
 
每当我尝试用fileUpload打开页面。难道你不知道如何摆脱它？
解决方案 
您可以在 web.xml 。
 < filter> 
< filter-name> PrimeFaces FileUpload Filter< / filter-name> 
< filter-class> 
 org.primefaces.webapp.filter.FileUploadFilter 
< / filter-class> 
< init-param> 
< param-name> uploadDirectory< / param-name> 
< param-value> / Users / primefaces / temp< / param-value> 
< / init-param> 
< / filter> 
  
 
Today I've got a problem with the PrimeFaces FileUpload. It works nice, but the files are stored in JBoss' temporary directory so whenever I redeploy the application or just commit the sources to svn, all of the images I uploaded are gone. So I wanted to ask, whether there is a way to save the images to the "source" directory of the war project.

My handleFileUpload method :
public String getUrlBase() {
    return FacesContext.getCurrentInstance().getExternalContext().getRealPath("//upload");
}

public void handleFileUpload(FileUploadEvent event) {
        new File(getUrlBase() + "/" + album.getId()).mkdirs();
        File result = new File(getUrlBase() + "/" + album.getId() + "/" + event.getFile().getFileName());

        try {
            FileOutputStream fileOutputStream = new FileOutputStream(result);

            byte[] buffer = new byte[BUFFER_SIZE];

            int bulk;
            InputStream inputStream = event.getFile().getInputstream();
            while (true) {
                bulk = inputStream.read(buffer);
                if (bulk < 0) {
                    break;
                }
                fileOutputStream.write(buffer, 0, bulk);
                fileOutputStream.flush();
            }

            fileOutputStream.close();
            inputStream.close();

            FacesMessage msg = new FacesMessage("Succesful",
                    event.getFile().getFileName() + " is uploaded.");
            FacesContext.getCurrentInstance().addMessage(null, msg);

        } catch (IOException e) {
            e.printStackTrace();
            FacesMessage error = new FacesMessage("The files were not uploaded!");
            FacesContext.getCurrentInstance().addMessage(null, error);
        }
    }
EDIT: another issue

my view file:
<h:form enctype="multipart/form-data" prependId="false">
        <p:growl id="messages" showSummary="true" showDetail="true" />
        <p:fileUpload fileUploadListener="#{photo.handleFileUpload}"
                      update="messages"  sizeLimit="1073741824"
                      multiple="true" label="choose" allowTypes="*.jpg;*.png;*.gif;"
                      description="Images" />
    </h:form>
When I add update="messages" to the fileUpload I get
javax.servlet.ServletException: null source
whenever I try to just open the page with the fileUpload. Don't you know how to get rid of it?
解决方案
You can configure upload directory in the web.xml if you want.
<filter>
  <filter-name>PrimeFaces FileUpload Filter</filter-name>
  <filter-class>
    org.primefaces.webapp.filter.FileUploadFilter
  </filter-class>
  <init-param>
    <param-name>uploadDirectory</param-name>
    <param-value>/Users/primefaces/temp</param-value>
  </init-param>
</filter>


                        
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