使用 Java 8 和 JavaFX 测试 Apache Felix [英] Test Apache Felix with Java 8 and JavaFX
本文介绍了使用 Java 8 和 JavaFX 测试 Apache Felix的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在研究 JavaFX 2.2 和 Java 8 的示例.我创建了这个简单的 Apache Felix Activator:
I'm working on example with JavaFX 2.2 and Java 8. I created this simple Apache Felix Activator:
激活器:
import javafx.application.Platform;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
public class Activator implements BundleActivator
{
Stage stage;
@Override
public void start(BundleContext context) throws Exception
{
Platform.runLater(new Runnable()
{
@Override
public void run()
{
stage = new Stage();
BorderPane pane = new BorderPane();
Scene scene = new Scene(pane, 400, 200);
pane.setCenter(new Label("This is a JavaFX Scene in a Stage"));
stage.setScene(scene);
stage.show();
}
});
System.out.println("Main Module is loaded!");
}
@Override
public void stop(BundleContext context) throws Exception
{
Platform.runLater(new Runnable()
{
@Override
public void run()
{
stage.close();
}
});
System.out.println("Main Module is unloaded!");
}
}
POM
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>DX-57</groupId>
<artifactId>DX-57_Main</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>bundle</packaging>
<name>DX-57_Main OSGi Bundle</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>org.osgi.core</artifactId>
<version>5.0.0</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>2.3.7</version>
<extensions>true</extensions>
<configuration>
<instructions>
<Import-Package>*</Import-Package>
<Bundle-Activator>dx57.dx._main.Activator</Bundle-Activator>
<Export-Package>*</Export-Package>
</instructions>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>build-for-felix</id>
<dependencies>
<dependency>
<groupId>org.apache.felix</groupId>
<artifactId>org.apache.felix.main</artifactId>
<version>4.2.1</version>
<scope>provided</scope>
</dependency>
<!-- To include a shell:
<dependency>
<groupId>org.apache.felix</groupId>
<artifactId>org.apache.felix.gogo.shell</artifactId>
<version>0.10.0</version>
</dependency>
-->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.7</version>
<executions>
<execution>
<id>compile</id>
<phase>package</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<target>
<pathconvert property="plugins.jars" pathsep="${path.separator}">
<path refid="maven.runtime.classpath"/>
<map from="${project.build.directory}${file.separator}classes" to=""/>
</pathconvert>
<pathconvert pathsep=" " property="bundles">
<path path="${plugins.jars}"/>
<mapper>
<chainedmapper>
<flattenmapper/>
<globmapper from="*" to="file:modules/*" casesensitive="no"/>
</chainedmapper>
</mapper>
</pathconvert>
<propertyfile file="${project.build.directory}/config.properties">
<entry key="felix.auto.start" value="${bundles} file:modules/${project.build.finalName}.jar"/>
<entry key="org.osgi.framework.bootdelegation" value="*"/>
</propertyfile>
<copy file="${maven.dependency.org.apache.felix.org.apache.felix.main.jar.path}" tofile="${project.build.directory}/felix.jar"/>
</target>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<id>create-executable-jar</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<descriptors>
<descriptor>${basedir}/src/main/assembly/felix.xml</descriptor>
</descriptors>
<finalName>${project.build.finalName}</finalName>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>run-on-felix</id>
<dependencies>
<dependency>
<groupId>org.apache.felix</groupId>
<artifactId>org.apache.felix.main</artifactId>
<version>4.2.1</version>
<scope>provided</scope>
</dependency>
<!-- org.apache.felix:org.apache.felix.gogo.shell:0.6.1 useless from Maven since stdin is swallowed -->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.7</version>
<configuration>
<target>
<property name="vm.args" value=""/>
<pathconvert property="plugins.jars" pathsep="${path.separator}">
<path refid="maven.runtime.classpath"/>
<map from="${project.build.directory}${file.separator}classes" to=""/>
</pathconvert>
<makeurl property="urls" separator=" ">
<path path="${plugins.jars}"/>
<path location="${project.build.directory}/${project.build.finalName}.jar"/>
</makeurl>
<propertyfile file="${project.build.directory}/run.properties">
<entry key="felix.auto.start" value="${urls}"/>
<entry key="felix.auto.deploy.action" value="uninstall,install,update,start"/>
<entry key="org.osgi.framework.storage" value="${project.build.directory}${file.separator}felix-cache"/>
<entry key="org.osgi.framework.bootdelegation" value="*"/>
</propertyfile>
<makeurl property="run.properties.url" file="${project.build.directory}/run.properties"/>
<java fork="true" jar="${maven.dependency.org.apache.felix.org.apache.felix.main.jar.path}">
<sysproperty key="felix.config.properties" value="${run.properties.url}"/>
<jvmarg line="${vm.args}"/>
</java>
</target>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
</project>
错误:
[rcbandit@Laptop felix-framework_JavaFX]$ /opt/jdk1.8.0/bin/java -jar bin/felix.jar
ERROR: Bundle DX-57.Main [1] Error starting file:/home/rcbandit/Desktop/test/felix-framework_JavaFX/bundle/DX-57_Main-1.0-SNAPSHOT.jar (org.osgi.framework.BundleException: Activator start error in bundle DX-57.Main [1].)
java.lang.ClassCastException: dx57.dx._main.Activator cannot be cast to org.osgi.framework.BundleActivator
at org.apache.felix.framework.Felix.createBundleActivator(Felix.java:4336)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:2141)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2064)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1291)
at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
at java.lang.Thread.run(Thread.java:724)
____________________________
Welcome to Apache Felix Gogo
g!
我在文件 config.properties 中添加了外部包:
I added external packages into the file config.properties:
org.osgi.framework.system.packages.extra=javafx.application,
com.sun.browser.plugin,
com.sun.deploy.uitoolkit.impl.fx,
com.sun.deploy.uitoolkit.impl.fx.ui,
com.sun.deploy.uitoolkit.impl.fx.ui.resources,
com.sun.deploy.uitoolkit.impl.fx.ui.resources.image,
com.sun.glass.events,
com.sun.glass.ui,
com.sun.glass.ui.delegate,
com.sun.glass.ui.gtk,
com.sun.glass.ui.mac,
com.sun.glass.ui.win,
com.sun.glass.ui.x11,
com.sun.glass.utils,
com.sun.javafx,
com.sun.javafx.animation,
com.sun.javafx.animation.transition,
com.sun.javafx.applet,
com.sun.javafx.application,
com.sun.javafx.beans,
com.sun.javafx.beans.annotations,
com.sun.javafx.beans.event,
com.sun.javafx.binding,
com.sun.javafx.charts,
com.sun.javafx.collections,
com.sun.javafx.collections.annotations,
com.sun.javafx.collections.transformation,
com.sun.javafx.css,
com.sun.javafx.css.converters,
com.sun.javafx.css.parser,
com.sun.javafx.cursor,
com.sun.javafx.effect,
com.sun.javafx.embed,
com.sun.javafx.event,
com.sun.javafx.font,
com.sun.javafx.fxml,
com.sun.javafx.fxml.builder,
com.sun.javafx.fxml.expression,
com.sun.javafx.geom,
com.sun.javafx.geom.transform,
com.sun.javafx.iio,
com.sun.javafx.iio.bmp,
com.sun.javafx.iio.common,
com.sun.javafx.iio.gif,
com.sun.javafx.iio.jpeg,
com.sun.javafx.iio.png,
com.sun.javafx.image,
com.sun.javafx.image.impl,
com.sun.javafx.jmx,
com.sun.javafx.logging,
com.sun.javafx.menu,
com.sun.javafx.perf,
com.sun.javafx.property,
com.sun.javafx.property.adapter,
com.sun.javafx.robot,
com.sun.javafx.robot.impl,
com.sun.javafx.runtime,
com.sun.javafx.runtime.async,
com.sun.javafx.runtime.eula,
com.sun.javafx.scene,
com.sun.javafx.scene.control,
com.sun.javafx.scene.control.behavior,
com.sun.javafx.scene.control.skin,
com.sun.javafx.scene.control.skin.caspian,
com.sun.javafx.scene.control.skin.resources,
com.sun.javafx.scene.input,
com.sun.javafx.scene.layout.region,
com.sun.javafx.scene.paint,
com.sun.javafx.scene.shape,
com.sun.javafx.scene.text,
com.sun.javafx.scene.transform,
com.sun.javafx.scene.traversal,
com.sun.javafx.scene.web,
com.sun.javafx.scene.web.behavior,
com.sun.javafx.scene.web.skin,
com.sun.javafx.sg,
com.sun.javafx.sg.prism,
com.sun.javafx.stage,
com.sun.javafx.tk,
com.sun.javafx.tk.desktop,
com.sun.javafx.tk.quantum,
com.sun.javafx.util,
com.sun.media.jfxmedia,
com.sun.media.jfxmedia.control,
com.sun.media.jfxmedia.effects,
com.sun.media.jfxmedia.events,
com.sun.media.jfxmedia.locator,
com.sun.media.jfxmedia.logging,
com.sun.media.jfxmedia.track,
com.sun.media.jfxmediaimpl,
com.sun.media.jfxmediaimpl.platform,
com.sun.media.jfxmediaimpl.platform.gstreamer,
com.sun.media.jfxmediaimpl.platform.java,
com.sun.media.jfxmediaimpl.platform.osx,
com.sun.openpisces,
com.sun.prism,
com.sun.prism.camera,
com.sun.prism.d3d,
com.sun.prism.d3d.hlsl,
com.sun.prism.image,
com.sun.prism.impl,
com.sun.prism.impl.packrect,
com.sun.prism.impl.paint,
com.sun.prism.impl.ps,
com.sun.prism.impl.shape,
com.sun.prism.j2d,
com.sun.prism.j2d.paint,
com.sun.prism.paint,
com.sun.prism.ps,
com.sun.prism.render,
com.sun.prism.shader,
com.sun.prism.shape,
com.sun.prism.tkal,
com.sun.prism.util.tess,
com.sun.prism.util.tess.impl.tess,
com.sun.scenario,
com.sun.scenario.animation,
com.sun.scenario.animation.shared,
com.sun.scenario.effect,
com.sun.scenario.effect.impl,
com.sun.scenario.effect.impl.hw,
com.sun.scenario.effect.impl.hw.d3d,
com.sun.scenario.effect.impl.hw.d3d.hlsl,
com.sun.scenario.effect.impl.prism,
com.sun.scenario.effect.impl.prism.ps,
com.sun.scenario.effect.impl.prism.sw,
com.sun.scenario.effect.impl.state,
com.sun.scenario.effect.impl.sw,
com.sun.scenario.effect.impl.sw.java,
com.sun.scenario.effect.impl.sw.sse,
com.sun.scenario.effect.light,
com.sun.t2k,
com.sun.webpane.perf,
com.sun.webpane.platform,
com.sun.webpane.platform.event,
com.sun.webpane.platform.graphics,
com.sun.webpane.sg,
com.sun.webpane.sg.prism,
com.sun.webpane.sg.prism.resources,
com.sun.webpane.sg.prism.theme,
com.sun.webpane.sg.theme,
com.sun.webpane.webkit,
com.sun.webpane.webkit.dom,
com.sun.webpane.webkit.network,
com.sun.webpane.webkit.network.about,
com.sun.webpane.webkit.network.data,
com.sun.webpane.webkit.unicode,
javafx.animation,
javafx.beans,
javafx.beans.binding,
javafx.beans.property,
javafx.beans.property.adapter,
javafx.beans.value,
javafx.collections,
javafx.concurrent,
javafx.embed.swing,
javafx.embed.swt,
javafx.event,
javafx.fxml,
javafx.geometry,
javafx.scene,
javafx.scene.canvas,
javafx.scene.chart,
javafx.scene.control,
javafx.scene.control.cell,
javafx.scene.effect,
javafx.scene.image,
javafx.scene.input,
javafx.scene.layout,
javafx.scene.media,
javafx.scene.paint,
javafx.scene.shape,
javafx.scene.text,
javafx.scene.transform,
javafx.scene.web,
javafx.stage,
javafx.util,
javafx.util.converter,
org.osgi.framework.wiring,
netscape.javascript
知道如何解决问题吗?
更新
删除
After removing <Export-Package>*</Export-Package> I get this error:
[rcbandit@Laptop felix-framework_JavaFX]$ /opt/jdk1.8.0/bin/java -jar bin/felix.jar
ERROR: Bundle DX-57.Main [1] Error starting file:/home/rcbandit/Desktop/test/felix-framework_JavaFX/bundle/DX-57_Main-1.0-SNAPSHOT.jar (org.osgi.framework.BundleException: Activator start error in bundle DX-57.Main [1].)
java.lang.IllegalStateException: Toolkit not initialized
at com.sun.javafx.application.PlatformImpl.runLater(PlatformImpl.java:201)
at com.sun.javafx.application.PlatformImpl.runLater(PlatformImpl.java:196)
at javafx.application.Platform.runLater(Platform.java:52)
at dx57.dx._main.Activator.start(Activator.java:20)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:645)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:2146)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2064)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1291)
at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
at java.lang.Thread.run(Thread.java:724)
____________________________
Welcome to Apache Felix Gogo
g!
推荐答案
JavaFX 应用程序依赖于来自 JavaFX API 的包，例如 javafx.application 和其他几个包.由于看起来您已经使用 Maven Bundle Plugin 构建了您的包，您的包已经声明了这些依赖项.这是一件好事.
JavaFX applications depend on packages from the JavaFX APIs, such as javafx.application and several others. Since it looks like you have built your bundle with Maven Bundle Plugin, your bundle already has these dependencies declared. This is a good thing.
在 Java 8 中，javafx.* 包由基础 JRE 提供.然而，OSGi 不会自动从 JRE 导出每个包，仅仅因为所有 JRE 都有一堆非标准包(例如 com.sun.* 等)正常应用程序代码应该无权访问.因此，OSGi 只提供由相关 JCP 规范为您使用的 Java 版本定义的包.例如javax.swing、org.w3c.dom等包
In Java 8 the javafx.* packages are provided by the base JRE. However OSGi does not automatically export every package from the JRE, simply because all JREs have a bunch of non-standard packages (e.g. com.sun.* etc) that normal application code should not have access to. Therefore OSGi only makes available the packages that are defined by the relevant JCP Specification for the version of Java that you are using. For example packages such as javax.swing, org.w3c.dom, etc.
由于 JavaFX 不是标准，因此没有 JavaFX 的 JCP 规范，并且 OSGi 不导出 javafx.* 包.但是，您可以通过在启动 OSGi 时设置以下配置属性来配置 OSGi 为您执行此操作:
Since JavaFX is not a standard, there is no JCP Specification for JavaFX, and OSGi does not export the javafx.* packages. However you can configure OSGi to do this for you by setting the following configuration property when you launch OSGi:
org.osgi.framework.system.packages.extra=javafx.application,...
注意 我已经展示了如何将 javafx.application 包添加到您的运行时.您可能需要添加更多，即 JavaFX API 中的所有包.我对 JavaFX 不够熟悉，无法列出这些，但它们应该很容易让您找到.
NB I have shown how to add the javafx.application package to your runtime. It is likely you will need to add several more, i.e. all of the packages from the JavaFX API. I am not sufficiently familar with JavaFX to list these, but they should be easy enough for you to find.
这篇关于使用 Java 8 和 JavaFX 测试 Apache Felix的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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