problem in file downloading in struts 2.0

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posted 12 years ago

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I have some facing some problems in downloading the file.
Earlier I was getting following error :

Can not find a java.io.InputStream with the name [inputStream] in the invocation stack. Check the <param name="inputName"> tag specified for this action.

Which is resolved when I specified name of method(getInputStream()) in action tag of struts.xml. This getInputStream() wiil return InputStream object.

Now when I clicked on download I m getting blank page with following URL

http://localhost:8080/struts2/JSP/download.action?filePath=D%3A%2Fmanish235%2Fstruts2%2Fbuild%2Fweb%2FWEB-INF%2F479391_rp_rp023_objctn_lr.PDF in browser.

If code is working that file should be saved in download folder in disk but I didn’t get the file in that location.

Then what could be the issue with the code? I didn’t get any error.

Following is code where I am uploading the file then I am downloading the same file.

1)UploadForm.jsp

2)UploadAction.java
package upload;
import java.io.*;
import javax.servlet.ServletContext;
import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;

public class UploadAction {
private File attachment;
private String attachmentFileName;
private String attachmentContentType;
private String description;

public File getAttachment() {
        return attachment;
    }

public void setAttachment(File attachment) {
        this.attachment = attachment;
        System.out.println(attachment);
    }

public String getAttachmentContentType() {
        return attachmentContentType;
    }

public void setAttachmentContentType(String attachmentContentType) {
        this.attachmentContentType = attachmentContentType;
        System.out.println(attachmentContentType);
    }

public String getAttachmentFileName() {
        return attachmentFileName;
    }

public void setAttachmentFileName(String attachmentFileName) {
        this.attachmentFileName = attachmentFileName;
        System.out.println(attachmentFileName);
    }

public String getDescription() {
        return description;
    }

public void setDescription(String description) {
        this.description = description;
        System.out.println(description);
    }
    public String execute() throws Exception
    {
      
      ServletContext servletContext = ServletActionContext.getServletContext();
     if (attachment != null)
     { // attachment will be null if there's an error,
       // such as if the uploaded file is too large
         String dataDir = servletContext.getRealPath("/WEB-INF");
         System.out.println(dataDir);
         File destination=new File(dataDir ,attachmentFileName);
         FileUtils.copyFile(attachment,destination);
         
     }
     return "success";
    }
  
}

Thanks in advance
Manish

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