JNLP DownloadServlet

Introduction

Java Web Start includes a servlet in the sample/jnlp directory of the JDK. It can be used on either a JNOP file and its associated resources packaged in a Web Archive (.war) file, or on an unarchived directory. The purpose of the servlet is to provide a simple and convenient packaging format for JNLP applications, so they can be easily deployed in a Web Container, such as Tomcat or a J2EE-compliant Application Server.

The download servlet supports the following features:

Automatic installation of the codebase URL into JNLP files, thus eliminating manual management of hard-coded URLs into JNLP files.
Explicit specification of the timestamp for a JNLP file, independent of the file-system timestamp.
Supports all download protocols defined in the JNLP specification v1.0.1. These include basic download protocol, version-based download protocol, and extension download protocol.
Version-based information is specified per file or per directory in the Web archive. Thus, no centralized file needs to be managed for the entire archive.
Automatic generation of JARDiff files
The servlet supports Pack200 compression for application files.

The packaging support consists of one servlet: JnlpDownloadServlet. The servlet is packaged into the jnlp-servlet.jar file, which can be found in the SDK under samples/jnlp/servlet/.

For Example refer:

http://docs.oracle.com/javase/7/docs/technotes/guides/javaws/developersguide/downloadservletguide.html

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Chintan Rathod14y ago
Introduction
Java Web Start includes a servlet in the sample/jnlp directory of the JDK. It can be used on either a JNOP file and its associated resources packaged in a Web Archive (.war) file, or on an unarchived directory. The purpose of the servlet is to provide a simple and convenient packaging format for JNLP applications, so they can be easily deployed in a Web Container, such as Tomcat or a J2EE-compliant Application Server.

The download servlet supports the following features:
- Automatic installation of the codebase URL into JNLP files, thus eliminating manual management of hard-coded URLs into JNLP files.
- Explicit specification of the timestamp for a JNLP file, independent of the file-system timestamp.
- Supports all download protocols defined in the JNLP specification v1.0.1. These include basic download protocol, version-based download protocol, and extension download protocol.
- Version-based information is specified per file or per directory in the Web archive. Thus, no centralized file needs to be managed for the entire archive.
- Automatic generation of JARDiff files
- The servlet supports Pack200 compression for application files.
The packaging support consists of one servlet: JnlpDownloadServlet. The servlet is packaged into the jnlp-servlet.jar file, which can be found in the SDK under samples/jnlp/servlet/.

For Example refer:

http://docs.oracle.com/javase/7/docs/technotes/guides/javaws/developersguide/downloadservletguide.html