Email with attachment doesn't work

Question

Hi all,
I have a form in with i upload a file. On submit i send a mail with attach the file i uploaded. the form has as action a servlet.
Well it works if i try it on the localhost, when i try it from my computer to the server the mail is sent but without the file attach.
the code is the following:
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import java.io.*;
import java.util.*;
/public class SendMail
String host ="" ;
String from ="" ;
String to ="";
String subject ="";
String body ="";
String id ="";
String filename ="" ;
boolean add = false;
boolean tosend = false;
public SendMail(String h , String f)
     host = h;
     from = f;
public void setTo(String to)
     this.to = to;
public void setSubject(String obj)
     this.subject = obj;
public void setBody(String body)
     if(add)
          this.body += body;
          add = false;
     else
          this.body = body;
public void addToBody(String body)
     this.body += body;
public boolean getContinue()
     return add;
public void setContinue(boolean a)
     add = a;
public String getBody()
     if(!add)
          return this.body;
     else
          return "";
public boolean send()
     try
     //Get system properties
     Properties props = System.getProperties();     
     //Setup mail server
     props.put("mail.smtp.host", host);
     // Get session
     Session session = Session.getDefaultInstance(props, null);
     // Define message
     MimeMessage message = new MimeMessage(session);
               // Set the from address
               message.setFrom(new InternetAddress(from));
//               Set the to address
System.out.println("to = >" + to +"< body = "+ body);
     message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
//     Set the subject
     message.setSubject(subject);
//     Set the content
     message.setText(body);
// Send message
     // Transport.send(message);
File file = new File(filename);
               if (file.exists())
                    // create and fill the first message part
                    MimeBodyPart mbp1 = new MimeBodyPart();
                    mbp1.setText(body);
                    // create the second message part
                    MimeBodyPart mbp2 = new MimeBodyPart();
                    // attach the file to the message
                    FileDataSource fds = new FileDataSource(filename);
                    mbp2.setDataHandler(new DataHandler(fds));
                    mbp2.setFileName(fds.getName());
                    // create the Multipart and its parts to it
                    Multipart mp = new MimeMultipart();
                    mp.addBodyPart(mbp1);
                    mp.addBodyPart(mbp2);
                    // add the Multipart to the message
                    message.setContent(mp);
               // send the message
               Transport.send(message);
return true;
catch (AddressException e)
               e.printStackTrace();
               return false;
catch (MessagingException e)
               e.printStackTrace();
               return false;
catch (Exception e)
               e.printStackTrace();
               return false;
Any help is appreciated.
Thanks!

Answer 1

Ok, I have made something similar to which your you want to do.
Before to send a e-mail you have to upload the file, and later you can attach it into the e-mail.
To upload the file:
I made it with a jsp file (has a form) where I call to a java servlet how upload the file:
package ServletUpload;
import java.io.*;
import java.net.*;
import java.util.*;
import java.text.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.commons.fileupload.*;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class uploadFichero extends HttpServlet {
    public void init(ServletConfig config) throws ServletException{
        super.init(config);
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Servlet</title>");
        out.println("</head>");
        out.println("<body>");
        out.println("We began the processing of the file");
        boolean uploaded = false;
        uploaded = procesaFicheros(request,out);
        if (true==uploaded)
            out.println("File uploaded");
        else
            out.println("Error to upload File");
        out.println("</body>");
        out.println("</html>");
        out.close();
    public boolean procesaFicheros(HttpServletRequest req, PrintWriter out ) throws ServletException, IOException {
        try {
            boolean isMultipart = FileUpload.isMultipartContent(req);
            out.println ("<br>Is multipart:"+isMultipart);
            // Create a factory for disk-based file items
            FileItemFactory factory = new DiskFileItemFactory();
            // Create a new file upload handler
            ServletFileUpload upload = new ServletFileUpload(factory);
            // Set overall request size constraint
            upload.setSizeMax(1024*512); //524288 Bytes (512 KB)
            // Parse the request
            List items = upload.parseRequest(req);
            // Process the uploaded items
            Iterator iter = items.iterator();
            while (iter.hasNext()) {
                FileItem item = (FileItem) iter.next();
                if (!item.isFormField()) {  //Files to upload
                    String fieldName = item.getFieldName();
                    String fileName = item.getName();
                    String contentType = item.getContentType();
                    boolean isInMemory = item.isInMemory();
                    long sizeInBytes = item.getSize();
                    /* ************* FOR WINDOWS EXPLORER ****************** */
                    /* ************** FOR MOZILLA EXPLORER IS NOT NEED ****************** */
                    /* *********** We extract the name of the file ONLY the name *********** */
                        /*  We have the name into a string, We have the separated folders by the character \  */
                    int numbers=0;
                    for(int i=fileName.length();(i=fileName.lastIndexOf('\\',i-1))>=0;)
                        numbers++;
                        /* WE OBTAIN A STRING FOR EACH DIRECTORY And The FILE */
                    String stringFile[] = fileName.split("\\\\");
                    /* *********** We only extract the name of the file (END) *********** */
                    /* WE CREATED THE FOLDER IN CASE IT DOES NOT EXIST */
                    /* WE VERIFIED IF THE FOLDER EXISTS */
                    String folder = "yourFolderName";
                    String newUserFolder = folder;
                    File createFile = new File("routeOfYourFolder/"+newUserFolder);
                    /*  for example (in unix)
File createFile = new File("/usr/local/tomcat/webapps/"+newUserFolder);
                    if (!createFile.exists()){ /* IT DOES NOT EXIST, WE CREATE IT */
                        createFile.mkdir();
                    /* WE VERIFIED IF THE FOLDER EXISTS (END) */
                    /* WE WROTE THE FILE (UPLOAD) IN THE CHOSEN FOLDER */
                    fileName = stringFile[numbers];
                    File uploadedFile = new File("routeOfYourFolder/"+newUserFolder+"/"+fileName);
                    item.write(uploadedFile);
                    /* WE WROTE THE FILE (UPLOAD) IN THE CHOSEN FOLDER (END) */
                } else {        //THAT ARE THE OTHER FIELDS OF THE FORM
                    // s= item.toString();
                    // out.println("<br>isFormField: "+s);
        catch(Exception e) {
            out.println("ERROR IN THE APPLICATION " + e.getMessage());
        return true;
    public void destroy() {
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        processRequest(request, response);
    public void doPost(HttpServletRequest req,HttpServletResponse res) throws ServletException, IOException {
          doGet(req,res);
}  //END OF uploadFicheroI hope it helps you. you will tell me.