Web容器中部署RAP
RAP的運行依賴于OSGI框架，而對于現有的JEE Web容器一般都不提供直接支持OSGI的能力。因此部署RAP的過程實際上相當與部署OSGI框架的過程。以下用Eclipse中集成的OSGI框架equinox為例介紹部署過程。
1. 首先需要下載equinox和servlet容器集成的工具包org.eclipse.equinox.servletbridge。可以通過eclipse的cvs站點（
http://www.eclipse.org/equinox/server/downloads/servletbridge-anon.psf）下載這個項目集；
2. 針對RAP項目創建一個feature項目(過程同RCP)；
3. 根據RAP項目的依賴創建feature項目的插件依賴；
為了讓OSGI框架和RAP應用能在應用服務器中部署運行，必須包含如下插件依賴：
必須依賴插件
<plugin
id="org.eclipse.core.commands"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.core.contenttype"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.core.expressions"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.core.jobs"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.core.runtime"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.equinox.app"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.equinox.common"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.equinox.http.registry"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.equinox.http.servlet"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.equinox.http.servletbridge"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.equinox.preferences"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.equinox.registry"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.osgi"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.osgi.services"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.rap.jface"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.rap.rwt"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.rap.ui"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.rap.ui.workbench"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
<plugin
id="org.eclipse.update.configurator"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>
版本號必須設置為0.0.0以便于pde工具導出依賴插件的時候能夠同步版本號。
4. 在feature項目得根目錄創建script（存放構建腳本）文件夾和templates（存放標準Web應用格式文件）文件夾；
5. 在script文件夾下創建一個ant構建文件；
webappBuilder.xml
<?xml version="1.0"?>
<project name="project" default="default">
<description>
Example of a webapplication build script for RAP applications that use
the equinox servlet bridge to run in a servlet container.
</description>
<!-- =================================
target: init
================================= -->
<target name="init">
<property name="proj.dir" value="${basedir}/.." />
<!--
This script assumes that the servlet bridge project is available
in the current workspace. Note: The location is hardcoded and must be
adjusted to your needs.
-->
<property name="servletbridge.dir"
value="D:/RAP/eclipse/workspace/org.eclipse.equinox.servletbridge" />
<!--
On windows be cautious about long file names for ${build.dir}
These long path problems were resolved in JRE 1.5.0_08
-->
<property name="build.dir" value="${proj.dir}/build" />
<property name="templates.dir" value="${proj.dir}/templates" />
<property name="webapp.name" value="xwiki" />
<property name="features" value="rcp.feature" />
<!--
If you are using this script in a head-less build define the following properties:
"ignore.pdeExportFeatures" (available only in the IDE - do the feature export with PDE Build)
"ignore.servletbridge.jar" (if you're compiling or extracting the jar yourself)
-->
</target>
<!-- =================================
target: prepare
================================= -->
<target name="prepare" depends="init">
<delete dir="${build.dir}/${webapp.name}" />
<mkdir dir="${build.dir}/${webapp.name}/WEB-INF/lib" />
</target>
<!-- =================================
target: default
================================= -->
<target name="default"
depends="copyResources, servletbridge.jar, pdeExportFeatures" />
<!-- =================================
target: copyResources
================================= -->
<target name="copyResources" depends="prepare">
<copy todir="${build.dir}/${webapp.name}">
<fileset dir="${templates.dir}" />
</copy>
</target>
<!-- =================================
target: servletbridge.jar
================================= -->
<target name="servletbridge.jar"
depends="prepare"
unless="ignore.servletbridge.jar">
<antcall target="jar-servletbridge.jar" />
<antcall target="copy-servletbridge.jar" />
</target>
<!-- =================================
target: copy-servletbridge.jar
================================= -->
<target name="copy-servletbridge.jar" if="servletbridge.jar-present">
<copy todir="${build.dir}/${webapp.name}/WEB-INF/lib">
<fileset file="${servletbridge.dir}/servletbridge.jar" />
</copy>
</target>
<!-- =================================
target: jar-servletbridge.jar
================================= -->
<target name="jar-servletbridge.jar" unless="servletbridge.jar-present">
<jar destfile="${build.dir}/${webapp.name}/WEB-INF/lib/servletbridge.jar">
<fileset dir="${servletbridge.dir}/bin">
<include name="**/*.class" />
</fileset>
</jar>
</target>
<!-- =================================
target: pdeExportFeatures
================================= -->
<target name="pdeExportFeatures"
depends="prepare"
unless="ignore.pdeExportFeatures">
<!--
Features get built asynchronously but this approach is sometimes convenient.
So that the pde.exportFeatures task is available in the IDE select
"Run in the same JRE as the workspace" from the JRE tab from "Run Ant.."
-->
<pde.exportFeatures features="${features}"
destination="${build.dir}/${webapp.name}/WEB-INF/eclipse"
exportType="directory"
useJARFormat="true"
exportSource="false" />
</target>
</project>
6. 在templates文件夾下創建如下文件結構；
WEB-INF
|--eclipse
| |--configuration
| | |--config.ini
| |--launch.ini
|--web.xml
launch.ini
# Eclipse Runtime Configuration Overrides
# These properties are loaded prior to starting the framework and can also be used to override System Properties
# @null is a special value used to override and clear the framework's copy of a System Property prior to starting the framework
# "*" can be used together with @null to clear System Properties that match a prefix name.
osgi.*=@null
org.osgi.*=@null
eclipse.*=@null
osgi.parentClassloader=app
osgi.contextClassLoaderParent=app
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "
http://java.sun.com/j2ee/dtds/web-app_2_2.dtd"> <web-app id="WebApp">
<servlet id="bridge">
<servlet-name>equinoxbridgeservlet</servlet-name>
<display-name>Equinox Bridge Servlet</display-name>
<description>Equinox Bridge Servlet</description>
<servlet-class>org.eclipse.equinox.servletbridge.BridgeServlet</servlet-class>
<init-param>
<param-name>commandline</param-name>
<param-value>-console</param-value>
</init-param>
<init-param>
<param-name>enableFrameworkControls</param-name>
<param-value>true</param-value>
</init-param>
<!--
org.eclipse.equinox.servletbridge and the Servlet API are exported automatically to the underlying OSGi framework.
The extendedFrameworkExports parameter allows the specification of additional java package exports.
The format is a comma separated list of exports as specified by the "Export-Package" bundle manifest header.
For example: com.mycompany.exports; version=1.0.0, com.mycompany.otherexports; version=1.0.0
-->
<init-param>
<param-name>extendedFrameworkExports</param-name>
<param-value></param-value>
</init-param>
<!--
You can specify your own framework launcher here.
The default is: org.eclipse.equinox.servletbridge.FrameworkLauncher
<init-param>
<param-name>frameworkLauncherClass</param-name>
<param-value>org.eclipse.equinox.servletbridge.FrameworkLauncher</param-value>
</init-param>
-->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>equinoxbridgeservlet</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<!--
This is required if your application bundles expose JSPs.
-->
<servlet-mapping>
<servlet-name>equinoxbridgeservlet</servlet-name>
<url-pattern>*.jsp</url-pattern>
</servlet-mapping>
</web-app>
7. 用ant執行script下的構建腳本；
再用Ant執行腳本的時候，應當把JRE標簽下的"Run in the same JRE as the workspace"選中，否則PDE工具可能無法導出依賴插件。
8. 編輯configration目錄下的config.ini文件，根據項目需要設定bundles，可用如下程序生成后拷貝到config.ini文件中。
ConfigIniCreator.java
/*******************************************************************************
* Copyright (c) 2002-2006 Innoopract Informationssysteme GmbH.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
*
http://www.eclipse.org/legal/epl-v10.html *
* Contributors:
* Innoopract Informationssysteme GmbH - initial API and implementation
******************************************************************************/
package org.eclipse.rap.tools;
import java.io.File;
/**
* <p>This tool creates the content of a simple config.ini file.
* Run this after the ANT build scripts (webappBuilder.xml and the
* pde.exportFeatures) have finished. After that replace the content
* of the config.ini file in the build.</p>
*
* <p>Note: this is not meant to be a high end deployment tool or the only
* possibility of how the content of your config.ini should look like if you
* are creating a RAP WAR. This should simplify the task to get
* a minimalistic runtime configuration that works...</p>
*/
public class ConfigIniCreator {
public static void main( final String[] arx ) {
////////////////////////////////////////////////////////////////////////////
// replace this with the absolute path to the plugin directory of
// the deployment build for example
// File file = new File( "C:\\projects\\org.eclipse.rap\\org.eclipse.rap.demo.feature\\build\\rapdemo\\WEB-INF\\eclipse\\plugins" );
File file = new File( "D:\\RAP\\eclipse\\workspace\\rcp.feature\\build\\xwiki\\WEB-INF\\eclipse\\plugins" );
////////////////////////////////////////////////////////////////////////////
String[] list = file.list();
StringBuffer buffer = new StringBuffer();
buffer.append( "#Eclipse Runtime Configuration File\n" );
buffer.append( "osgi.bundles=" );
for( int i = 0; i < list.length; i++ ) {
if( list[ i ].endsWith( ".jar" )
&& !list[ i ].startsWith( "org.eclipse.osgi_" ) )
{
buffer.append( list[ i ] );
if( list[ i ].startsWith( "org.eclipse.equinox.common_" ) ) {
buffer.append( "@2:start" );
} else {
buffer.append( "@start" );
}
if( i + 1 < list.length ) {
buffer.append( "," );
}
}
}
buffer.append( "\n" );
buffer.append( "osgi.bundles.defaultStartLevel=4\n" );
// write the content to the console
System.out.print( buffer );
}
}
在控制臺上可看到類似信息：
config.ini
#Eclipse Runtime Configuration File
osgi.bundles=org.eclipse.core.commands_3.3.0.I20070605-0010.jar@start,
org.eclipse.core.contenttype_3.2.100.v20070319.jar@start,
org.eclipse.core.expressions_3.3.0.v20070606-0010.jar@start,
org.eclipse.core.jobs_3.3.0.v20070423.jar@start,
org.eclipse.core.runtime_3.3.100.v20070530.jar@start,
org.eclipse.equinox.app_1.0.0.v20070606.jar@start,
org.eclipse.equinox.common_3.3.0.v20070426.jar@2:start,
org.eclipse.equinox.http.registry_1.0.0.jar@start,
org.eclipse.equinox.http.servletbridge_1.0.0.jar@start,
org.eclipse.equinox.http.servlet_1.0.0.jar@start,
org.eclipse.equinox.preferences_3.2.100.v20070522.jar@start,
org.eclipse.equinox.registry_3.3.0.v20070522.jar@start,
org.eclipse.osgi.services_3.1.200.v20070605.jar@start,
org.eclipse.rap.jface_1.0.0.jar@start,
org.eclipse.rap.rwt_1.0.0.jar@start,
org.eclipse.rap.ui.workbench_1.0.0.jar@start,
org.eclipse.rap.ui_1.0.0.jar@start,
org.eclipse.update.configurator_1.0.0.jar@start,
rcp_1.0.0.jar@start
osgi.bundles.defaultStartLevel=4
9. 構建完成，打包應用（用jar命令歸檔為一個war文件）；
10. 拷貝到Web容器相應的Web應用目錄下，或采用Web服務器的部署工具部署。