如何在 Eclipse 插件中使用 Java11(Java10)?

How to use Java11 (Java10) with Eclipse Plugin?(如何在 Eclipse 插件中使用 Java11(Java10)?)

问题描述

如果我在我的 Eclipse 插件中指定 JavaSE-10 作为最小执行环境:

将插件作为 Eclipse 应用程序启动时出现以下错误:

org.osgi.framework.BundleException:无法解析模块:org.treez.core [597]未解决的需求:Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=10))"未解决的需求:Require-Bundle: org.treez.javafxd3；可见性:=再出口"->捆绑符号名称:org.treez.javafxd3；捆绑版本="1.0.0.qualifier";单例:=真"org.treez.javafxd3 [586]未解决的需求:Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=10))"在 org.eclipse.osgi.container.Module.start(Module.java:444)在 org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1634)在 org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1613)在 org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1585)在 org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1528)在 org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1)在 org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)在 org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)

我查过了

• Java10 在已安装的 JRE 下备受推崇
• 10 被选为合规级别

我使用 Oxygen.3a Release (4.7.3a) Build id: 20180405-1200

=>这是 Eclipse Equinox 中的错误吗?

=>我还可以检查什么来解决这个问题?

如果我从最低执行环境设置中删除 JavaSE-10，我就能够启动 Eclipse 应用程序并且插件似乎工作正常.

当我导出插件时，我收到以下警告:

# 25.04.18, 12:25:40 MESZ# Eclipse Compiler for Java(TM) v20180330-0919, 3.13.102, 版权所有 IBM Corp 2000, 2015.保留所有权利.合规级别 9 及以上不支持选项 -bootclasspath

当我从我的更新页面安装插件后尝试使用它时，我得到一个 ClassNotFoundException:

<代码>...原因:java.lang.ClassNotFoundException: org.treez.views.views_1.0.0.201804191641 找不到 org.treez.views.tree.TreeViewPart在 org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:484)在 org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:395)在 org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:387)在 org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:150)在 java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499)在 org.eclipse.osgi.internal.framework.EquinoxBundle.loadClass(EquinoxBundle.java:564)在 org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)... 114 更多

如果我使用 Java8，一切正常.

相关问题:

• (因此，如果未应用该选项，我假设在导出向导的编译步骤中出现问题.)

  我使用 Java 11.0.1 和 Eclipse SimRel 2018-09(加上 Java11 支持插件)

  If I specify JavaSE-10 as minimum execution environment in my Eclipse plugin:

  I get following errors when starting my plugin as Eclipse Application:

  org.osgi.framework.BundleException: Could not resolve module: org.treez.core [597]
    Unresolved requirement: Require-Capability: osgi.ee; filter:="(&(osgi.ee=JavaSE)(version=10))"
    Unresolved requirement: Require-Bundle: org.treez.javafxd3; visibility:="reexport"
      -> Bundle-SymbolicName: org.treez.javafxd3; bundle-version="1.0.0.qualifier"; singleton:="true"
         org.treez.javafxd3 [586]
           Unresolved requirement: Require-Capability: osgi.ee; filter:="(&(osgi.ee=JavaSE)(version=10))"
  
      at org.eclipse.osgi.container.Module.start(Module.java:444)
      at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1634)
      at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1613)
      at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1585)
      at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1528)
      at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1)
      at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
      at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
  

  I checked that

  • Java10 is reverenced under Installed JREs
  • 10 is selected as compliance level

  I use Oxygen.3a Release (4.7.3a) Build id: 20180405-1200

  =>Is this a bug in eclipse equinox?

  =>What else can I check to resolve this issue?

  If I remove JavaSE-10 from the minimum execution environment settings I am able to start the Eclipse Application and the plugin seems to work fine.

  When I export the plugin I get following warning:

  # 25.04.18, 12:25:40 MESZ
  # Eclipse Compiler for Java(TM) v20180330-0919, 3.13.102, Copyright IBM Corp 2000, 2015. All rights reserved.
  option -bootclasspath not supported at compliance level 9 and above
  

  When I try to use the plugin after installing it from my update page, I get a ClassNotFoundException:

  ...
  Caused by: java.lang.ClassNotFoundException: org.treez.views.tree.TreeViewPart cannot be found by org.treez.views_1.0.0.201804191641
      at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:484)
      at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:395)
      at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:387)
      at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:150)
      at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499)
      at org.eclipse.osgi.internal.framework.EquinoxBundle.loadClass(EquinoxBundle.java:564)
      at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
      ... 114 more
  

  If I use Java8 everything works fine.

  Related questions:

  • Java 8 & Missing required capability Require-Capability: osgi.ee; filter="(&(osgi.ee=JavaSE)(version=1.8))"

  • How to set up java 10 in Eclipse Oxygen?

  • How to add org.eclipse.swt (and other plugin dependencies) as an automatic Java9 module?

  解决方案

  What worked for me as a work around was to

  • Remove the required version entries from the manifest files and ignore the corresponding warnings

  • Activate the option "Use class files compiled in the workspace" in the export wizard:

  (Therefore I assume that something goes wrong during the compilation step of the export wizard if that option is not applied.)

  I used Java 11.0.1 and Eclipse SimRel 2018-09 (plus Java11 support plugin)

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