public String[] getContentType(String fieldName) 
{
        List items = (List) files.get(fieldName);
        if (items == null) {
            return null;
        }
        List< String > contentTypes = new ArrayList< String >(items.size());
        for (int i = 0; i <  items.size(); i++) {
            FileItem fileItem = (FileItem) items.get(i);
            contentTypes.add(fileItem.getContentType());
        }
        return (String[]) contentTypes.toArray(new String[contentTypes.size()]);
}

 public List getErrors() 
{
        return errors;
}

 public File[] getFile(String fieldName) 
{
        List items = (List) files.get(fieldName);
        if (items == null) {
            return null;
        }
        List< File > fileList = new ArrayList< File >(items.size());
        for (int i = 0; i <  items.size(); i++) {
            DiskFileItem fileItem = (DiskFileItem) items.get(i);
            fileList.add(fileItem.getStoreLocation());
        }
        return (File[]) fileList.toArray(new File[fileList.size()]);
}

 public String[] getFileNames(String fieldName) 
{
        List< FileItem > items = files.get(fieldName);
        if (items == null) {
            return null;
        }
        List< String > fileNames = new ArrayList< String >(items.size());
        for (int i = 0; i <  items.size(); i++) {
            DiskFileItem fileItem = (DiskFileItem) items.get(i);
            fileNames.add(getCanonicalName(fileItem.getName()));
        }
        return (String[]) fileNames.toArray(new String[fileNames.size()]);
}

 public Enumeration getFileParameterNames() 
{
        return Collections.enumeration(files.keySet());
}

 public String[] getFilesystemName(String fieldName) 
{
        List items = (List) files.get(fieldName);
        if (items == null) {
            return null;
        }
        List< String > fileNames = new ArrayList< String >(items.size());
        for (int i = 0; i <  items.size(); i++) {
            DiskFileItem fileItem = (DiskFileItem) items.get(i);
            fileNames.add(fileItem.getStoreLocation().getName());
        }
        return (String[]) fileNames.toArray(new String[fileNames.size()]);
}

 public String getParameter(String name) 
{
        List v = (List) params.get(name);
        if (v != null && v.size()  > 0) {
            return (String) v.get(0);
        }
        return null;
}

 public Enumeration getParameterNames() 
{
        return Collections.enumeration(params.keySet());
}

 public String[] getParameterValues(String name) 
{
        List< String > v = params.get(name);
        if (v != null && v.size()  > 0) {
            return (String[]) v.toArray(new String[v.size()]);
        }
        return null;
}

 public  void parse(HttpServletRequest servletRequest,
    String saveDir) throws IOException 
{
        DiskFileItemFactory fac = new DiskFileItemFactory();
        // Make sure that the data is written to file
        fac.setSizeThreshold(0);
        if (saveDir != null) {
            fac.setRepository(new File(saveDir));
        }
        // Parse the request
        try {
            ServletFileUpload upload = new ServletFileUpload(fac);
            upload.setSizeMax(maxSize);
            List items = upload.parseRequest(createRequestContext(servletRequest));
            for (Object item1 : items) {
                FileItem item = (FileItem) item1;
                if (log.isDebugEnabled()) log.debug("Found item " + item.getFieldName());
                if (item.isFormField()) {
                    log.debug("Item is a normal form field");
                    List< String > values;
                    if (params.get(item.getFieldName()) != null) {
                        values = params.get(item.getFieldName());
                    } else {
                        values = new ArrayList< String >();
                    }
                    // note: see http://jira.opensymphony.com/browse/WW-633
                    // basically, in some cases the charset may be null, so
                    // we're just going to try to "other" method (no idea if this
                    // will work)
                    String charset = servletRequest.getCharacterEncoding();
                    if (charset != null) {
                        values.add(item.getString(charset));
                    } else {
                        values.add(item.getString());
                    }
                    params.put(item.getFieldName(), values);
                } else {
                    log.debug("Item is a file upload");
                    // Skip file uploads that don't have a file name - meaning that no file was selected.
                    if (item.getName() == null || item.getName().trim().length() <  1) {
                        log.debug("No file has been uploaded for the field: " + item.getFieldName());
                        continue;
                    }
                    List< FileItem > values;
                    if (files.get(item.getFieldName()) != null) {
                        values = files.get(item.getFieldName());
                    } else {
                        values = new ArrayList< FileItem >();
                    }
                    values.add(item);
                    files.put(item.getFieldName(), values);
                }
            }
        } catch (FileUploadException e) {
            log.error(e);
            errors.add(e.getMessage());
        }
}

Creates a new request wrapper to handle multi-part data using methods adapted from Jason Pell's multipart classes (see class description).

 public  void setMaxSize(String maxSize) 
{
    
        this.maxSize = Long.parseLong(maxSize);
}