Re: Null Pointer Exception when i use execand Wait with file upload

[Pranava Swaroop]

:) Apologies


package employee;

import com.opensymphony.xwork2.ActionSupport;
import org.apache.struts2.ServletActionContext;

import javax.servlet.ServletContext;
import java.io.File;

/**
 * Created with IntelliJ IDEA.
 * User: love4059
 * Date: 13/03/13
 * Time: 8:10 PM
 * To change this template use File | Settings | File Templates.
 */
public class SingleFileUploadAction extends ActionSupport {
    private String description;
    private File attachment;
    private String attachmentContentType;
    private String attachmentFileName;
    private int complete = 0;
    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getAttachmentContentType() {
        return attachmentContentType;
    }

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

    public File getAttachment() {
        return attachment;
    }

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

    public String getAttachmentFileName() {
        return attachmentFileName;
    }

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

    public String upload(){
        System.out.println(description);
        System.out.println(attachmentContentType);
        System.out.println(attachmentFileName);
        ServletContext servletContext =
                ServletActionContext.getServletContext(); (NULL POINTER
Exception at this LINE)
        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 savedFile = new File(dataDir, attachmentFileName);
            attachment.renameTo(savedFile);
        }
        return "success";
    }



    public int getComplete() {
        complete += 10;
        return complete;
    }
}


2013/3/16 Martin Gainty <mgai...@hotmail.com>

> Not much anyone can do here if we cant see the code for
> employee.SingleFileUploadAction.java
>
> Martin
> ______________________________________________
> Verzicht und Vertraulichkeitanmerkung
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> Empfaenger sein, so bitten wir hoeflich um eine Mitteilung. Jede unbefugte
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>
>
>  > Date: Sat, 16 Mar 2013 10:21:08 +1100
> > Subject: Null Pointer Exception when i use execand Wait with file upload
> > From: stalin.pran...@gmail.com
> > To: user@struts.apache.org
> >
> > Hello I am trying to use execandWait interceptor with fileUpload
> > interceptor as below. i tried completestack in place of default and i get
> > Null pointer exception.
> >
> >
> > <action name="File_singleUpload" class="employee.SingleFileUploadAction"
> > method="upload">
> >             <interceptor-ref name="fileUpload">
> >                 <param name="maximumSize">1000000000</param>
> >                 <param name="allowedTypes">
> >                     image/gif,image/jpeg,image/png
> >                 </param>
> >             </interceptor-ref>
> >             <interceptor-ref name="defaultStack"/>
> >             <interceptor-ref name="execAndWait">
> >                 <param name="delay">1500</param>
> >             </interceptor-ref>
> >             <result name="wait">/jsp/wait.jsp</result>
> >             <result name="success">/jsp/SingleUpload.jsp</result>
> >         </action>
> >
> >
> > java.lang.NullPointerException
> >
> org.apache.struts2.ServletActionContext.getServletContext(ServletActionContext.java:139)
> >
> employee.SingleFileUploadAction.upload(SingleFileUploadAction.java:58)
> >       sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >       java.lang.reflect.Method.invoke(Method.java:597)
> >
> com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:446)
> >
> com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:285)
> >
> org.apache.struts2.interceptor.BackgroundProcess$1.run(BackgroundProcess.java:57)
> >       java.lang.Thread.run(Thread.java:680)
> >
> >
> >
> > Please advise what i can do.
> >
> >
> > --
> > Warm Regards
> > Pranava S Balugari
> >
> > "Keep Looking Don't Settle"
>
>



-- 
Warm Regards
Pranava S Balugari

"Keep Looking Don't Settle"