smartupload.java

上传文件的Java类

                value = dataHeader.substring(start, end);
        }
        return value;
    }

    private String getFileExt(String fileName)
    {
        String value = new String();
        int start = 0;
        int end = 0;
        if(fileName == null)
            return null;
        start = fileName.lastIndexOf('.') + 1;
        end = fileName.length();
        value = fileName.substring(start, end);
        if(fileName.lastIndexOf('.') > 0)
            return value;
        else
            return "";
    }

    private String getContentType(String dataHeader)
    {
        String token = new String();
        String value = new String();
        int start = 0;
        int end = 0;
        token = "Content-Type:";
        start = dataHeader.indexOf(token) + token.length();
        if(start != -1)
        {
            end = dataHeader.length();
            value = dataHeader.substring(start, end);
        }
        return value;
    }

    private String getTypeMIME(String ContentType)
    {
        String value = new String();
        int pos = 0;
        pos = ContentType.indexOf("/");
        if(pos != -1)
            return ContentType.substring(1, pos);
        else
            return ContentType;
    }

    private String getSubTypeMIME(String ContentType)
    {
        String value = new String();
        int start = 0;
        int end = 0;
        start = ContentType.indexOf("/") + 1;
        if(start != -1)
        {
            end = ContentType.length();
            return ContentType.substring(start, end);
        } else
        {
            return ContentType;
        }
    }

    private String getContentDisp(String dataHeader)
    {
        String value = new String();
        int start = 0;
        int end = 0;
        start = dataHeader.indexOf(":") + 1;
        end = dataHeader.indexOf(";");
        value = dataHeader.substring(start, end);
        return value;
    }

    private void getDataSection()
    {
        boolean found = false;
        String dataHeader = new String();
        int searchPos = m_currentIndex;
        int keyPos = 0;
        int boundaryLen = m_boundary.length();
        m_startData = m_currentIndex;
        m_endData = 0;
        do
        {
            if(searchPos >= m_totalBytes)
                break;
            if(m_binArray[searchPos] == (byte)m_boundary.charAt(keyPos))
            {
                if(keyPos == boundaryLen - 1)
                {
                    m_endData = ((searchPos - boundaryLen) + 1) - 3;
                    break;
                }
                searchPos++;
                keyPos++;
            } else
            {
                searchPos++;
                keyPos = 0;
            }
        } while(true);
        m_currentIndex = m_endData + boundaryLen + 3;
    }

    private String getDataHeader()
    {
        int start = m_currentIndex;
        int end = 0;
        int len = 0;
        boolean found = false;
        while(!found)
            if(m_binArray[m_currentIndex] == 13 && m_binArray[m_currentIndex + 2] == 13)
            {
                found = true;
                end = m_currentIndex - 1;
                m_currentIndex = m_currentIndex + 2;
            } else
            {
                m_currentIndex++;
            }
        String dataHeader = new String(m_binArray, start, (end - start) + 1);
        return dataHeader;
    }

    private String getFileName(String filePathName)
    {
        String token = new String();
        String value = new String();
        int pos = 0;
        int i = 0;
        int start = 0;
        int end = 0;
        pos = filePathName.lastIndexOf('/');
        if(pos != -1)
            return filePathName.substring(pos + 1, filePathName.length());
        pos = filePathName.lastIndexOf('\\');
        if(pos != -1)
            return filePathName.substring(pos + 1, filePathName.length());
        else
            return filePathName;
    }

    public void setDeniedFilesList(String deniedFilesList)
        throws SQLException, IOException, ServletException
    {
        String ext = "";
        if(deniedFilesList != null)
        {
            ext = "";
            for(int i = 0; i < deniedFilesList.length(); i++)
                if(deniedFilesList.charAt(i) == ',')
                {
                    if(!m_deniedFilesList.contains(ext))
                        m_deniedFilesList.addElement(ext);
                    ext = "";
                } else
                {
                    ext = ext + deniedFilesList.charAt(i);
                }

            if(ext != "")
                m_deniedFilesList.addElement(ext);
        } else
        {
            m_deniedFilesList = null;
        }
    }

    public void setAllowedFilesList(String allowedFilesList)
    {
        String ext = "";
        if(allowedFilesList != null)
        {
            ext = "";
            for(int i = 0; i < allowedFilesList.length(); i++)
                if(allowedFilesList.charAt(i) == ',')
                {
                    if(!m_allowedFilesList.contains(ext))
                        m_allowedFilesList.addElement(ext);
                    ext = "";
                } else
                {
                    ext = ext + allowedFilesList.charAt(i);
                }

            if(ext != "")
                m_allowedFilesList.addElement(ext);
        } else
        {
            m_allowedFilesList = null;
        }
    }

    public void setDenyPhysicalPath(boolean deny)
    {
        m_denyPhysicalPath = deny;
    }

    public void setForcePhysicalPath(boolean force)
    {
        m_forcePhysicalPath = force;
    }

    public void setContentDisposition(String contentDisposition)
    {
        m_contentDisposition = contentDisposition;
    }

    public void setTotalMaxFileSize(long totalMaxFileSize)
    {
        m_totalMaxFileSize = totalMaxFileSize;
    }

    public void setMaxFileSize(long maxFileSize)
    {
        m_maxFileSize = maxFileSize;
    }

    protected String getPhysicalPath(String filePathName, int option)
        throws IOException
    {
        String path = new String();
        String fileName = new String();
        String fileSeparator = new String();
        boolean isPhysical = false;
        fileSeparator = System.getProperty("file.separator");
        if(filePathName == null)
            throw new IllegalArgumentException("There is no specified destination file (1140).");
        if(filePathName.equals(""))
            throw new IllegalArgumentException("There is no specified destination file (1140).");
        if(filePathName.lastIndexOf("\\") >= 0)
        {
            path = filePathName.substring(0, filePathName.lastIndexOf("\\"));
            fileName = filePathName.substring(filePathName.lastIndexOf("\\") + 1);
        }
        if(filePathName.lastIndexOf("/") >= 0)
        {
            path = filePathName.substring(0, filePathName.lastIndexOf("/"));
            fileName = filePathName.substring(filePathName.lastIndexOf("/") + 1);
        }
        path = path.length() != 0 ? path : "/";
        java.io.File physicalPath = new java.io.File(path);
        if(physicalPath.exists())
            isPhysical = true;
        if(option == 0)
        {
            if(isVirtual(path))
            {
                path = m_application.getRealPath(path);
                if(path.endsWith(fileSeparator))
                    path = path + fileName;
                else
                    path = String.valueOf((new StringBuffer(String.valueOf(path))).append(fileSeparator).append(fileName));
                return path;
            }
            if(isPhysical)
            {
                if(m_denyPhysicalPath)
                    throw new IllegalArgumentException("Physical path is denied (1125).");
                else
                    return filePathName;
            } else
            {
                throw new IllegalArgumentException("This path does not exist (1135).");
            }
        }
        if(option == 1)
        {
            if(isVirtual(path))
            {
                path = m_application.getRealPath(path);
                if(path.endsWith(fileSeparator))
                    path = path + fileName;
                else
                    path = String.valueOf((new StringBuffer(String.valueOf(path))).append(fileSeparator).append(fileName));
                return path;
            }
            if(isPhysical)
                throw new IllegalArgumentException("The path is not a virtual path.");
            else
                throw new IllegalArgumentException("This path does not exist (1135).");
        }
        if(option == 2)
        {
            if(isPhysical)
                if(m_denyPhysicalPath)
                    throw new IllegalArgumentException("Physical path is denied (1125).");
                else
                    return filePathName;
            if(isVirtual(path))
                throw new IllegalArgumentException("The path is not a physical path.");
            else
                throw new IllegalArgumentException("This path does not exist (1135).");
        } else
        {
            return null;
        }
    }

    public void uploadInFile(String destFilePathName)
        throws SmartUploadException, IOException
    {
        int intsize = 0;
        int pos = 0;
        int readBytes = 0;
        if(destFilePathName == null)
            throw new IllegalArgumentException("There is no specified destination file (1025).");
        if(destFilePathName.length() == 0)
            throw new IllegalArgumentException("There is no specified destination file (1025).");
        if(!isVirtual(destFilePathName) && m_denyPhysicalPath)
            throw new SecurityException("Physical path is denied (1035).");
        intsize = m_request.getContentLength();
        m_binArray = new byte[intsize];
        for(; pos < intsize; pos += readBytes)
            try
            {
                readBytes = m_request.getInputStream().read(m_binArray, pos, intsize - pos);
            }
            catch(Exception e)
            {
                throw new SmartUploadException("Unable to upload.");
            }

        if(isVirtual(destFilePathName))
            destFilePathName = m_application.getRealPath(destFilePathName);
        try
        {
            java.io.File file = new java.io.File(destFilePathName);
            FileOutputStream fileOut = new FileOutputStream(file);
            fileOut.write(m_binArray);
            fileOut.close();
        }
        catch(Exception e)
        {
            throw new SmartUploadException("The Form cannot be saved in the specified file (1030).");
        }
    }

    private boolean isVirtual(String pathName)
    {
        if(m_application.getRealPath(pathName) != null)
        {
            java.io.File virtualFile = new java.io.File(m_application.getRealPath(pathName));
            return virtualFile.exists();
        } else
        {
            return false;
        }
    }

    protected byte m_binArray[];
    protected HttpServletRequest m_request;
    protected HttpServletResponse m_response;
    protected ServletContext m_application;
    private int m_totalBytes;
    private int m_currentIndex;
    private int m_startData;
    private int m_endData;
    private String m_boundary;
    private long m_totalMaxFileSize;
    private long m_maxFileSize;
    private Vector m_deniedFilesList;
    private Vector m_allowedFilesList;
    private boolean m_denyPhysicalPath;
    private boolean m_forcePhysicalPath;
    private String m_contentDisposition;
    public static final int SAVE_AUTO = 0;
    public static final int SAVE_VIRTUAL = 1;
    public static final int SAVE_PHYSICAL = 2;
    private Files m_files;
    private Request m_formRequest;
}