Hi,
I am using s:fileupload tag in jsp and my task is to upload a file and need to persist and sending that file as attachement to the selected mail id's

But i am getting error with this code can any one help out this problem...here i am sending my jsp file and action class and error

Action:---

public void confirmNotification() {    
                this.confirmHotels();
                if(validateMail() && validateMobile()){
                if(serviceAlerts.getId() == 0) {
                        this.serviceAlerts.setNotificationType(adminNotificationDetails.getNotificationType());
                                this.serviceAlerts.setModifiedUser(user.getUsername());
                                this.serviceAlerts.setMessageType(adminNotificationDetails.getMessageType());
                                this.serviceAlerts.setModifiedDate(new Date());
                                this.serviceAlerts.setCreatedDate(new Date());
                                this.serviceAlerts.setStartDate(adminNotificationDetails.getStartDate());
                                this.serviceAlerts.setCreatedUser(user.getUsername());                 
                                if(adminNotificationDetails.getNotificationType()!=null){
                                if(adminNotificationDetails.getNotificationType().equals(ServiceAlerts.NotificationType.Custom)){
                                        this.serviceAlerts.setCustomNotificationName(adminNotificationDetails.getCustomNotificationName());
                                }}
                                if(adminNotificationDetails.getMessageType() !=null){
                                if((adminNotificationDetails.getMessageType().equals(ServiceAlerts.MessageType.Email)) || ( adminNotificationDetails.getMessageType().equals(ServiceAlerts.MessageType.EmailAndSMS))){
                                        this.serviceAlerts.setAddEmails(adminNotificationDetails.getAddEmails());

                                        this.serviceAlerts.setEmailContent(adminNotificationDetails.getEmailContent());
                                        this.serviceAlerts.setEmailSubject(adminNotificationDetails.getEmailSubject());
                                }
                                if((adminNotificationDetails.getMessageType().equals(ServiceAlerts.MessageType.SMS)) || ( adminNotificationDetails.getMessageType().equals(ServiceAlerts.MessageType.EmailAndSMS))){
                                        this.serviceAlerts.setAddSmss(adminNotificationDetails.getAddSmss());
                                        this.serviceAlerts.setSmsContent(adminNotificationDetails.getSmsContent());
                                }}
                                        int formDataLength = adminNotificationDetails.getSize();
                                        byte[] dataBytes = new byte[formDataLength];
                                        adminNotificationDetails.setEmailAttachment(dataBytes);
                                
                                  this.saveFile();
                                
                        this.serviceAlerts.setEmailAttachment(adminNotificationDetails.getEmailAttachment());
               
                                this.serviceAlerts.setSendFrequency(adminNotificationDetails.getSendFrequency());
                this.selectHotels();
                                em.persist(serviceAlerts);
                                System.out.println("bytes is -------------"+serviceAlerts.getEmailAttachment());
                                }
                        else
                        {
                                        this.serviceAlerts.setModifiedDate(new Date());
                                        this.serviceAlerts.setModifiedUser(user.getUsername());
                                       
                                }}
//                       if(this.serviceAlerts.getStartDate()!=null && this.serviceAlerts.getSendFrequency()!=0)
                        sendConfirmationMail();
                        em.flush();
       
                        }      
        public FileOutputStream saveFile(){
               
                try {
                        DataInputStream in = new DataInputStream(adminNotificationDetails.getFile());
                        int formDataLength1 = adminNotificationDetails.getSize();
                        byte dataBytes[] = adminNotificationDetails.getEmailAttachment();
                       

                        System.out.println("size is --------"+formDataLength1);
                        String file = new String(dataBytes);

                        int byteRead = 0;
                        int totalBytesRead = 0;
                        while (totalBytesRead < formDataLength1) {
                                byteRead = in.read(dataBytes, totalBytesRead,formDataLength1);
                                totalBytesRead += byteRead;
                                }
                        //for saving the file name
                        String saveFile = file.substring(file.indexOf("filename=\"") +10);
                        saveFile = saveFile.substring(0, saveFile.indexOf("\n"));
                        saveFile = saveFile.substring(saveFile.lastIndexOf("\\")+ 1,saveFile.indexOf("\""));
                        int lastIndex = adminNotificationDetails.getContentType().lastIndexOf("=");
                        String boundary = adminNotificationDetails.getContentType().substring(lastIndex + 1,adminNotificationDetails.getContentType().length());
                        int pos;
                        //extracting the index of file
                        pos = file.indexOf("filename=\"");
                        pos = file.indexOf("\n", pos) + 1;
                        pos = file.indexOf("\n", pos) + 1;
                        pos = file.indexOf("\n", pos) + 1;
                        int boundaryLocation = file.indexOf(boundary, pos) - 4;
                        int startPos = ((file.substring(0, pos)).getBytes()).length;
                        int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;
                        // creating a new file with the same name and writing the       content in new file
                                        FileOutputStream fileOut = new FileOutputStream(saveFile);
                                        fileOut.write(dataBytes, startPos, (endPos - startPos));
                                        fileOut.flush();
                                        fileOut.close();
                                        System.out.println("the file name is --------"+saveFile);
                                        return fileOut;
                  } catch (Exception ex) {
                        ex.printStackTrace();
                  }
                return null;
       
                 
               
               
        }

Jsp:----

<s:fileUpload id="uploadFile"
                                                                                                                                   data="#{adminNotificationDetails.file}" 
                                                                                                                                fileName="#{adminNotificationDetails.name}"
                                                                                                                                    fileSize="#{adminNotificationDetails.size}"
                                                                                                                                     contentType="#{adminNotificationDetails.contentType}"     
                                                                                                                                     accept="images/*,application/*" />

Structure:----

@Name("adminNotificationDetails")
@Scope(ScopeType.CONVERSATION)
@AutoCreate
public class AdminNotificationDetails {
        private NotificationType notificationType;
        private MessageType messageType;
        private String customNotificationName;
        private String emailSubject;
        private String emailContent;
        private String smsContent;
    private String userName;
    private Date startDate;
    private int sendFrequency;
    private String addSmss;
    private String addEmails;
    private String toEmails;
    private byte[] emailAttachment;
    private int size;
    private String name;
    private InputStream file;

private String contentType;
       

       
        public String getContentType() {
        return contentType;
}
public void setContentType(String contentType) {
        this.contentType = contentType;
}
        public String getName() {
        return name;
}
public void setName(String name) {
        this.name = name;
}
        public byte[] getEmailAttachment() {
                return emailAttachment;
        }
        public void setEmailAttachment(byte[] emailAttachment) {
                this.emailAttachment = emailAttachment;
        }
        public String getSmsContent() {
                return smsContent;
        }
        public void setSmsContent(String smsContent) {
                this.smsContent = smsContent;
        }
        public String getAddSmss() {
                return addSmss;
        }
        public void setAddSmss(String addSmss) {
                this.addSmss = addSmss;
        }
        public String getAddEmails() {
                return addEmails;
        }
        public void setAddEmails(String addEmails) {
                this.addEmails = addEmails;
        }
        public int getSendFrequency() {
               
                return sendFrequency;
        }
        public void setSendFrequency(int sendFrequency) {
                this.sendFrequency = sendFrequency;
        }
        public Date getStartDate() {
                return startDate;
        }
        public void setStartDate(Date startDate) {
                this.startDate = startDate;
        }
        public String getEmailContent() {
                return emailContent;
        }
        public void setEmailContent(String emailContent) {
                this.emailContent = emailContent;
        }
        public String getEmailSubject() {
                return emailSubject;
        }
        public void setEmailSubject(String emailSubject) {
                this.emailSubject = emailSubject;
        }

        public String getCustomNotificationName() {
                return customNotificationName;
        }
        public void setCustomNotificationName(String customNotificationName) {
                this.customNotificationName = customNotificationName;
        }
        public NotificationType getNotificationType() {
                return notificationType;
        }
        public void setNotificationType(NotificationType notificationType) {
                this.notificationType = notificationType;
        }
        public MessageType getMessageType() {
                return messageType;
        }
        public void setMessageType(MessageType messageType) {
                this.messageType = messageType;
        }

        public String getUserName() {
                return userName;
        }
        public void setUserName(String userName) {
                this.userName = userName;
        }
        public String getToEmails() {
                return toEmails;
        }
        public void setToEmails(String toEmails) {
                this.toEmails = toEmails;
        }
        public int getSize() {
                return size;
        }
        public void setSize(int size) {
                this.size = size;
        }
        public InputStream getFile() {
                return file;
        }
        public void setFile(InputStream file) {
                this.file = file;
        }      
}