org.zkoss.zkmax.au.http
Class AuDownloader

java.lang.Object
  org.zkoss.zkmax.au.http.AuDownloader

All Implemented Interfaces:

AuExtension

public class AuDownloader
extends java.lang.Object
implements AuExtension

The AU processor to handle the resumable download.

Available in ZK EE

Since:

3.5.0

Author:

tomyeh

See Also:

Filedownload

Method Summary

void	destroy() Destroys the AU extension.
static java.lang.String	getDownloadURI(java.io.File file, java.lang.String contentType, java.lang.String data) Returns the download URI of the specified file.
static java.lang.String	getDownloadURI(java.lang.String path, java.lang.String contentType, java.lang.String data) Returns the download URI of the specified file.
static java.lang.String	getDownloadURI(java.net.URL url, java.lang.String contentType, java.lang.String data) Returns the download URI of the specified file.
void	init(DHtmlUpdateServlet servlet) Initializes the AU extension.
static void	init(WebApp wapp) Initializes the downloader.
void	service(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.String pi) Called by ZK to process the AU request.

Methods inherited from class java.lang.Object

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

Method Detail

init

public static void init(WebApp wapp)
                 throws javax.servlet.ServletException

Initializes the downloader.

Throws:

javax.servlet.ServletException

init

public void init(DHtmlUpdateServlet servlet)

Description copied from interface: AuExtension

Initializes the AU extension. It is called when an extension is added to DHtmlUpdateServlet.

Specified by:

init in interface AuExtension

destroy

public void destroy()

Description copied from interface: AuExtension

Destroys the AU extension. It is called when an extension is removed from DHtmlUpdateServlet, or when DHtmlUpdateServlet is being destroyed.

Specified by:

destroy in interface AuExtension

getDownloadURI

public static java.lang.String getDownloadURI(java.io.File file,
                                              java.lang.String contentType,
                                              java.lang.String data)

Returns the download URI of the specified file.

getDownloadURI

public static java.lang.String getDownloadURI(java.net.URL url,
                                              java.lang.String contentType,
                                              java.lang.String data)

Returns the download URI of the specified file.

getDownloadURI

public static java.lang.String getDownloadURI(java.lang.String path,
                                              java.lang.String contentType,
                                              java.lang.String data)

Returns the download URI of the specified file.

Parameters:

path - the path to access the resource of the Web application. In other words, it is URI of ServletContext. Since 3.6.1: if the path is relative, Desktop.getCurrentDirectory() is assumed.

service

public void service(javax.servlet.http.HttpServletRequest request,
                    javax.servlet.http.HttpServletResponse response,
                    java.lang.String pi)
             throws javax.servlet.ServletException,
                    java.io.IOException

Description copied from interface: AuExtension

Called by ZK to process the AU request.

To retrieve the http session, use HttpServletRequest.getSession(). To retrieve the ZK session, use Sessions.getCurrent(boolean).

Specified by:

service in interface AuExtension

Parameters:

request - the request (never null).

response - the response (never null).

pi - the path info. It includes the prefix when the Au processor is associated (see DHtmlUpdateServlet.addAuExtension(org.zkoss.zk.ui.WebApp, java.lang.String, org.zkoss.zk.au.http.AuExtension). For example, if an AU processor is associated with "/upload", then pi must start with "/upload". Note: it might end with other string depending on the URI you generated to the client.

Throws:

javax.servlet.ServletException

java.io.IOException