Package controller.utils

Class FileServlet

java.lang.Object
javax.servlet.GenericServlet
javax.servlet.http.HttpServlet
controller.utils.FileServlet
All Implemented Interfaces:
java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig
@WebServlet(name="FileServlet",
            urlPatterns="/file/*",
            loadOnStartup=0)
public class FileServlet
extends javax.servlet.http.HttpServlet
See Also:
Serialized Form

  • Nested Class Summary

    Nested Classes
    Modifier and Type Class Description
    protected class  FileServlet.Range
    This class represents a byte range.

  • Field Summary

    Fields
    Modifier and Type Field Description
    private static java.lang.String basePath
    BasePath dove vengono messe le immagini.
    private static int DEFAULT_BUFFER_SIZE
    Size del buffer.
    private static long DEFAULT_EXPIRE_TIME
    Expire time.
    private static java.lang.String MULTIPART_BOUNDARY
    Multipart byteranges.

  • Constructor Summary

    Constructors
    Constructor Description
    FileServlet()  

  • Method Summary

    Modifier and Type Method Description
    private static boolean accepts​(java.lang.String acceptHeader, java.lang.String toAccept)
    Returns true if the given accept header accepts the given value.
    private static void close​(java.io.Closeable resource)
    Close the given resource.
    private static void copy​(java.io.RandomAccessFile input, java.io.OutputStream output, long start, long length)
    Copy the given byte range of the given input to the given output.
    void doGet​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
    Process GET request.
    protected void doHead​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
    Process HEAD request.
    private java.io.File helper​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
    Help the actual request.
    void init()
    Initialize the servlet.
    private static boolean matches​(java.lang.String matchHeader, java.lang.String toMatch)
    Returns true if the given match header matches the given value.
    private void processRequest​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, boolean content)
    Process the actual request.
    private static long sublong​(java.lang.String value, int beginIndex, int endIndex)
    Returns a substring of the given string value from the given begin index to the given end index as a long.
    static java.util.List<java.lang.String> uploadFoto​(javax.servlet.http.HttpServletRequest request)
    Metodo per upload delle foto.

    Methods inherited from class javax.servlet.http.HttpServlet

    doDelete, doOptions, doPost, doPut, doTrace, getLastModified, service, service

    Methods inherited from class javax.servlet.GenericServlet

    destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • DEFAULT_BUFFER_SIZE

      private static final int DEFAULT_BUFFER_SIZE
      Size del buffer.
      See Also:
      Constant Field Values

    • DEFAULT_EXPIRE_TIME

      private static final long DEFAULT_EXPIRE_TIME
      Expire time.
      See Also:
      Constant Field Values

    • MULTIPART_BOUNDARY

      private static final java.lang.String MULTIPART_BOUNDARY
      Multipart byteranges.
      See Also:
      Constant Field Values

    • basePath

      private static java.lang.String basePath
      BasePath dove vengono messe le immagini.

  • Constructor Details

    • FileServlet

      public FileServlet()

  • Method Details

    • init

      public void init() throws javax.servlet.ServletException
      Initialize the servlet.
      Overrides:
      init in class javax.servlet.GenericServlet
      Throws:
      javax.servlet.ServletException

    • doHead

      protected void doHead​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws java.io.IOException
      Process HEAD request. This returns the same headers as GET request, but without content.
      Overrides:
      doHead in class javax.servlet.http.HttpServlet
      Throws:
      java.io.IOException

    • doGet

      public void doGet​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws java.io.IOException
      Process GET request.
      Overrides:
      doGet in class javax.servlet.http.HttpServlet
      Throws:
      java.io.IOException

    • processRequest

      private void processRequest​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, boolean content) throws java.io.IOException
      Process the actual request.
      Parameters:
      request - The request to be processed.
      response - The response to be created.
      content - Whether the request body should be written (GET) or not (HEAD).
      Throws:
      java.io.IOException - If something fails at I/O level.

    • helper

      private java.io.File helper​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws java.io.IOException
      Help the actual request.
      Parameters:
      request - The request to be processed.
      response - The response to be created.
      Returns:
      file
      Throws:
      java.io.IOException - If something fails at I/O level.

    • accepts

      private static boolean accepts​(java.lang.String acceptHeader, java.lang.String toAccept)
      Returns true if the given accept header accepts the given value.
      Parameters:
      acceptHeader - The accept header.
      toAccept - The value to be accepted.
      Returns:
      True if the given accept header accepts the given value.

    • matches

      private static boolean matches​(java.lang.String matchHeader, java.lang.String toMatch)
      Returns true if the given match header matches the given value.
      Parameters:
      matchHeader - The match header.
      toMatch - The value to be matched.
      Returns:
      True if the given match header matches the given value.

    • sublong

      private static long sublong​(java.lang.String value, int beginIndex, int endIndex)
      Returns a substring of the given string value from the given begin index to the given end index as a long. If the substring is empty, then -1 will be returned
      Parameters:
      value - The string value to return a substring as long for.
      beginIndex - The begin index of the substring to be returned as long.
      endIndex - The end index of the substring to be returned as long.
      Returns:
      A substring of the given string value as long or -1 if substring is empty.

    • copy

      private static void copy​(java.io.RandomAccessFile input, java.io.OutputStream output, long start, long length) throws java.io.IOException
      Copy the given byte range of the given input to the given output.
      Parameters:
      input - The input to copy the given range to the given output for.
      output - The output to copy the given range from the given input for.
      start - Start of the byte range.
      length - Length of the byte range.
      Throws:
      java.io.IOException - If something fails at I/O level.

    • close

      private static void close​(java.io.Closeable resource)
      Close the given resource.
      Parameters:
      resource - The resource to be closed.

    • uploadFoto

      public static java.util.List<java.lang.String> uploadFoto​(javax.servlet.http.HttpServletRequest request) throws javax.servlet.ServletException, java.io.IOException
      Metodo per upload delle foto.
      Parameters:
      request - Request da dove prelevare le foto
      Returns:
      lista dei nomi dei file
      Throws:
      javax.servlet.ServletException
      java.io.IOException