Package org.teamapps.ux.resource

Class ResourceProviderServlet

java.lang.Object
javax.servlet.GenericServlet
javax.servlet.http.HttpServlet
org.teamapps.ux.resource.ResourceProviderServlet
All Implemented Interfaces:
java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig
public class ResourceProviderServlet
extends javax.servlet.http.HttpServlet
See Also:
Serialized Form

  • Constructor Summary

    Constructors
    Constructor Description
    ResourceProviderServlet​(ResourceProvider resourceProvider)  

  • Method Summary

    Modifier and Type Method Description
    protected void doGet​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)  
    protected void doHead​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)  
    static java.lang.String encodeURI​(java.lang.String string)
    URI-encode the given string using UTF-8.
    static java.lang.String encodeURL​(java.lang.String string)
    URL-encode the given string using UTF-8.
    protected java.lang.String getAttachmentName​(javax.servlet.http.HttpServletRequest request, java.io.File file)
    Returns the file name to be used in Content-Disposition header.
    protected void handleNotFound​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
    Handles the case when the file is not found.
    static void setCacheHeaders​(javax.servlet.http.HttpServletResponse response, long expires)
    Set the cache headers.
    static void setNoCacheHeaders​(javax.servlet.http.HttpServletResponse response)
    Set the no-cache headers.

    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, init, log, log

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • ResourceProviderServlet

      public ResourceProviderServlet​(ResourceProvider resourceProvider)

  • Method Details

    • doHead

      protected void doHead​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException, java.io.IOException
      Overrides:
      doHead in class javax.servlet.http.HttpServlet
      Throws:
      javax.servlet.ServletException
      java.io.IOException

    • doGet

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

    • handleNotFound

      protected void handleNotFound​(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws java.io.IOException
      Handles the case when the file is not found.

      The default implementation sends a HTTP 404 error.

      Parameters:
      request - The involved HTTP servlet request.
      response - The involved HTTP servlet response.
      Throws:
      java.io.IOException - When something fails at I/O level.

    • getAttachmentName

      protected java.lang.String getAttachmentName​(javax.servlet.http.HttpServletRequest request, java.io.File file)
      Returns the file name to be used in Content-Disposition header. This does not need to be URL-encoded as this will be taken care of.

      The default implementation returns File.getName().

      Parameters:
      request - The involved HTTP servlet request.
      file - The involved file.
      Returns:
      The file name to be used in Content-Disposition header.

    • encodeURL

      public static java.lang.String encodeURL​(java.lang.String string)
      URL-encode the given string using UTF-8.
      Parameters:
      string - The string to be URL-encoded using UTF-8.
      Returns:
      The given string, URL-encoded using UTF-8, or null if null was given.
      Throws:
      java.lang.UnsupportedOperationException - When this platform does not support UTF-8.

    • encodeURI

      public static java.lang.String encodeURI​(java.lang.String string)
      URI-encode the given string using UTF-8. URIs (paths and filenames) have different encoding rules as compared to URL query string parameters. URLEncoder is actually only for www (HTML) form based query string parameter values (as used when a webbrowser submits a HTML form). URI encoding has a lot in common with URL encoding, but the space has to be %20 and some chars doesn't necessarily need to be encoded.
      Parameters:
      string - The string to be URI-encoded using UTF-8.
      Returns:
      The given string, URI-encoded using UTF-8, or null if null was given.
      Throws:
      java.lang.UnsupportedOperationException - When this platform does not support UTF-8.

    • setCacheHeaders

      public static void setCacheHeaders​(javax.servlet.http.HttpServletResponse response, long expires)

      Set the cache headers. If the expires argument is larger than 0 seconds, then the following headers will be set:

      • Cache-Control: public,max-age=[expiration time in seconds],must-revalidate
      • Expires: [expiration date of now plus expiration time in seconds]

      Else the method will delegate to setNoCacheHeaders(HttpServletResponse).

      Parameters:
      response - The HTTP servlet response to set the headers on.
      expires - The expire time in seconds (not milliseconds!).

    • setNoCacheHeaders

      public static void setNoCacheHeaders​(javax.servlet.http.HttpServletResponse response)

      Set the no-cache headers. The following headers will be set:

      • Cache-Control: no-cache,no-store,must-revalidate
      • Expires: [expiration date of 0]
      • Pragma: no-cache
      Set the no-cache headers.
      Parameters:
      response - The HTTP servlet response to set the headers on.