Android平台Knopflerfish上的Pax Web

Question

我计划使用wherein在Android上启动OSGi，这样我就能够在Android上运行Java (jsp)和Java。

我的第一步是在安卓系统上安装Knopflerfish。我遵循了下面的教程：tutorial.html

Knopflerfish做得很好，我在Android手机浏览器上看到了本地主机:8080。

我的第二步是在Knopflerfish上安装Pax Web，这也安装在Android上。我还从这里学习了他们的教程：tutorial.html

该教程说：

卸载KF包 第一步是停止HTTP包并卸载JSDK和HTTP包，因为PaxWeb将接管这个函数。通常，您也很可能希望卸载HTTP包，但是对于本教程，我们将继续安装它。确保在进入下一步之前执行刷新包。

然后：

安装PaxWeb 第二步是从PaxWeb安装并启动以下包。

• pax-web-jsp-1.0.2.jar (安装)
• pax-web-jetty-bundle-1.0.2.jar (安装和启动)
• pax-web-扩展程序-war-0.8.0.jar(安装和启动)

成功安装了Pax Web包。

问题

无法启动Pax Web包。

当我尝试启动HTTP-root-IMP时，它会在控制台上给出这个错误消息，这是一个Knopflerfish包。

[stderr] ## DEBUG: errors - FrameworkErrorEvent bundle #20
[stderr] ## DEBUG: errors - FrameworkErrorEvent throwable:
Couldn't start bundle: HTTP-root-IMPL (#20) (due to: org.osgi.framework.BundleException: Bundle#20, unable to resolve: Missing package(s) or can not resolve all of the them:
org.osgi.service.http;version=[1.1.0,2.0.0) -- Could not resolve exporting bundle - org.osgi.service.http;version=1.2.0 Bundle[id=16,gen=0].
javax.servlet.http;version=[2.5.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet.http;version=2.5.0 Bundle[id=16,gen=0].
javax.servlet;version=[2.5.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet;version=2.5.0 Bundle[id=16,gen=0].)
org.osgi.framework.BundleException: Bundle#20, unable to resolve: Missing package(s) or can not resolve all of the them:
org.osgi.service.http;version=[1.1.0,2.0.0) -- Could not resolve exporting bundle - org.osgi.service.http;version=1.2.0 Bundle[id=16,gen=0].
javax.servlet.http;version=[2.5.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet.http;version=2.5.0 Bundle[id=16,gen=0].
javax.servlet;version=[2.5.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet;version=2.5.0 Bundle[id=16,gen=0].
        at org.knopflerfish.framework.BundleImpl.getUpdatedState(BundleImpl.java:1259)
        at org.knopflerfish.framework.BundleImpl.finalizeActivation(BundleImpl.java:312)
        at org.knopflerfish.framework.PermissionOps.callFinalizeActivation(PermissionOps.java:265)
        at org.knopflerfish.framework.BundleImpl.start(BundleImpl.java:295)
        at org.knopflerfish.bundle.frameworkcommands.FrameworkCommandGroup.cmdStart(FrameworkCommandGroup.java:1634)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at org.knopflerfish.service.console.CommandGroupAdapter.execute(CommandGroupAdapter.java:256)
        at org.knopflerfish.bundle.console.Command$2.run(Command.java:239)
        at java.security.AccessController.doPrivileged(AccessController.java:45)
        at org.knopflerfish.bundle.console.Command.run(Command.java:226)
        at java.lang.Thread.run(Thread.java:856)

另一个问题是，我将从Knopflerfish的Pax Web教程中开始捆绑包。在这里，我试图启动pax-web-jetty-bundle-1.0.2.jar (OPS4J Pax Web - Jetty Bundle)

[stderr] ## DEBUG: errors - FrameworkErrorEvent bundle #16
[stderr] ## DEBUG: errors - FrameworkErrorEvent throwable:
Couldn't start bundle: OPS4J Pax Web - Jetty Bundle (#16) (due to: org.osgi.framework.BundleException: Bundle#16, unable to resolve: Missing package(s) or can not resolve all of the them:
javax.security.sasl -- No providers found.
javax.management.remote -- No providers found.
javax.management.modelmbean -- No providers found.
javax.management -- No providers found.)
org.osgi.framework.BundleException: Bundle#16, unable to resolve: Missing package(s) or can not resolve all of the them:
javax.security.sasl -- No providers found.
javax.management.remote -- No providers found.
javax.management.modelmbean -- No providers found.
javax.management -- No providers found.
        at org.knopflerfish.framework.BundleImpl.getUpdatedState(BundleImpl.java:1259)
        at org.knopflerfish.framework.BundleImpl.finalizeActivation(BundleImpl.java:312)
        at org.knopflerfish.framework.PermissionOps.callFinalizeActivation(PermissionOps.java:265)
        at org.knopflerfish.framework.BundleImpl.start(BundleImpl.java:295)
        at org.knopflerfish.bundle.frameworkcommands.FrameworkCommandGroup.cmdStart(FrameworkCommandGroup.java:1634)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at org.knopflerfish.service.console.CommandGroupAdapter.execute(CommandGroupAdapter.java:256)
        at org.knopflerfish.bundle.console.Command$2.run(Command.java:239)
        at java.security.AccessController.doPrivileged(AccessController.java:45)
        at org.knopflerfish.bundle.console.Command.run(Command.java:226)
        at java.lang.Thread.run(Thread.java:856)

最后，当我尝试运行pax-web-extender-war-0.8.0.jar (OPS4J Pax Web - Extender - War)时，也会出现以下错误消息：

[stderr] ## DEBUG: errors - FrameworkErrorEvent bundle #17
[stderr] ## DEBUG: errors - FrameworkErrorEvent throwable:
Couldn't start bundle: OPS4J Pax Web - Extender - WAR (#17) (due to: org.osgi.framework.BundleException: Bundle#17, unable to resolve: Missing package(s) or can not resolve all of the them:
org.osgi.service.http;version=[1.0.0,2.0.0) -- Could not resolve exporting bundle - org.osgi.service.http;version=1.2.0 Bundle[id=16,gen=0].
javax.servlet.http;version=2.1.0 -- Could not resolve exporting bundle - javax.servlet.http;version=2.5.0 Bundle[id=16,gen=0].
javax.servlet;version=2.1.0 -- Could not resolve exporting bundle - javax.servlet;version=2.5.0 Bundle[id=16,gen=0].)
org.osgi.framework.BundleException: Bundle#17, unable to resolve: Missing package(s) or can not resolve all of the them:
org.osgi.service.http;version=[1.0.0,2.0.0) -- Could not resolve exporting bundle - org.osgi.service.http;version=1.2.0 Bundle[id=16,gen=0].
javax.servlet.http;version=2.1.0 -- Could not resolve exporting bundle - javax.servlet.http;version=2.5.0 Bundle[id=16,gen=0].
javax.servlet;version=2.1.0 -- Could not resolve exporting bundle - javax.servlet;version=2.5.0 Bundle[id=16,gen=0].
        at org.knopflerfish.framework.BundleImpl.getUpdatedState(BundleImpl.java:1259)
        at org.knopflerfish.framework.BundleImpl.finalizeActivation(BundleImpl.java:312)
        at org.knopflerfish.framework.PermissionOps.callFinalizeActivation(PermissionOps.java:265)
        at org.knopflerfish.framework.BundleImpl.start(BundleImpl.java:295)
        at org.knopflerfish.bundle.frameworkcommands.FrameworkCommandGroup.cmdStart(FrameworkCommandGroup.java:1634)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at org.knopflerfish.service.console.CommandGroupAdapter.execute(CommandGroupAdapter.java:256)
        at org.knopflerfish.bundle.console.Command$2.run(Command.java:239)
        at java.security.AccessController.doPrivileged(AccessController.java:45)
        at org.knopflerfish.bundle.console.Command.run(Command.java:226)
        at java.lang.Thread.run(Thread.java:856)

我还尝试启动pax-web-jsp-1.0.2.jar (OPS4J Pax Web - Jsp Support)，显示了此错误消息：

[stderr] ## DEBUG: errors - FrameworkErrorEvent bundle #15
[stderr] ## DEBUG: errors - FrameworkErrorEvent throwable:
Couldn't start bundle: OPS4J Pax Web - Jsp Support (#15) (due to: org.osgi.framework.BundleException: Bundle#15, unable to resolve: Missing package(s) or can not resolve all of the them:
javax.tools -- No providers found.
javax.servlet.resources;version=[2.3.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet.resources;version=2.5.0 Bundle[id=16,gen=0].
javax.servlet.http;version=[2.3.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet.http;version=2.5.0 Bundle[id=16,gen=0].
javax.servlet;version=[2.3.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet;version=2.5.0 Bundle[id=16,gen=0].
javax.lang.model.util -- No providers found.
javax.lang.model.type -- No providers found.
javax.lang.model.element -- No providers found.
javax.lang.model -- No providers found.
javax.annotation.processing -- No providers found.)
org.osgi.framework.BundleException: Bundle#15, unable to resolve: Missing package(s) or can not resolve all of the them:
javax.tools -- No providers found.
javax.servlet.resources;version=[2.3.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet.resources;version=2.5.0 Bundle[id=16,gen=0].
javax.servlet.http;version=[2.3.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet.http;version=2.5.0 Bundle[id=16,gen=0].
javax.servlet;version=[2.3.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet;version=2.5.0 Bundle[id=16,gen=0].
javax.lang.model.util -- No providers found.
javax.lang.model.type -- No providers found.
javax.lang.model.element -- No providers found.
javax.lang.model -- No providers found.
javax.annotation.processing -- No providers found.
        at org.knopflerfish.framework.BundleImpl.getUpdatedState(BundleImpl.java:1259)
        at org.knopflerfish.framework.BundleImpl.finalizeActivation(BundleImpl.java:312)
        at org.knopflerfish.framework.PermissionOps.callFinalizeActivation(PermissionOps.java:265)
        at org.knopflerfish.framework.BundleImpl.start(BundleImpl.java:295)
        at org.knopflerfish.bundle.frameworkcommands.FrameworkCommandGroup.cmdStart(FrameworkCommandGroup.java:1634)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at org.knopflerfish.service.console.CommandGroupAdapter.execute(CommandGroupAdapter.java:256)
        at org.knopflerfish.bundle.console.Command$2.run(Command.java:239)
        at java.security.AccessController.doPrivileged(AccessController.java:45)
        at org.knopflerfish.bundle.console.Command.run(Command.java:226)
        at java.lang.Thread.run(Thread.java:856)

根据我从错误消息中了解到的情况，这些包正在寻找这些包。有什么办法可以解决这个问题，并成功地使用OSGi框架在安卓上运行吗？

org.osgi.service.http;version=[1.1.0,2.0.0) -- Could not resolve exporting bundle - org.osgi.service.http;version=1.2.0 Bundle[id=16,gen=0].
javax.servlet.http;version=[2.5.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet.http;version=2.5.0 Bundle[id=16,gen=0].
javax.servlet;version=[2.5.0,3.0.0) -- Could not resolve exporting bundle - javax.servlet;version=2.5.0 Bundle[id=16,gen=0].

javax.security.sasl -- No providers found.
javax.management.remote -- No providers found.
javax.management.modelmbean -- No providers found.
javax.management -- No providers found.

Answer 1

首先，我强烈建议对所有Pax-Web包使用相同的版本，其次，您缺少一个servlet包。而且，看起来您还缺少了另外几个Pax-Web包。您很可能需要以下包：

• pax-web-api
• pax-web-jetty-bundle
• pax-web-jsp
• pax-web-运行时
• pax-web-spi

如果你想使用战争，你就需要

• pax-web-扩展-战争
• 和平与战争
• 再来几个..。

最新版本的Pax是3.0.2，所以你应该根据你想做的事情仔细选择。您可能会发现，查看Pax的ITests (取决于您将要使用的版本)以获得需要在哪个捆绑包上的灵感是有帮助的。我建议从最低限度开始。这样，您首先从http-服务开始，并根据您的需要对其进行增强。

有关更多细节，请查看Pax-Web项目，特别是示例和itest模块。