JavaFX E4 RCP创建Model Fragment后报错：No application id has been found.

时间：2023-01-12 21:52:23

背景介绍

这两天应XMan团队的需求开始研究基于JavaFX的E4 RCP 。

这里先推荐一个很好的(英文)入门教程(中文系列教程实在没有找到)：

http://developer.eclipsesource.com/tutorials/#eclipse4

在学习Model Fragment部分时，根据提示使用"Extract into a fragment"时，导致项目无法正确运行，报错：

!ENTRY org.eclipse.equinox.app 0 0 2016-04-06 18:56:17.546
!MESSAGE Product App4.app.product could not be found.

!ENTRY org.eclipse.xtend.lib 2 0 2016-04-06 18:56:17.620
!MESSAGE Could not resolve module: org.eclipse.xtend.lib [157]
Unresolved requirement: Require-Bundle: org.eclipse.xtend.lib.macro; bundle-version="[2.9.0,3.0.0)"; visibility:="reexport"
!ENTRY org.eclipse.osgi 4 0 2016-04-06 18:56:17.621
!MESSAGE Application error
!STACK 1
java.lang.RuntimeException: No application id has been found.
at org.eclipse.equinox.internal.app.EclipseAppContainer.startDefaultApp(EclipseAppContainer.java:242)
at org.eclipse.equinox.internal.app.MainApplicationLauncher.run(MainApplicationLauncher.java:29)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
at org.eclipse.equinox.launcher.Main.main(Main.java:1488)
gogo: InterruptedException: sleep interrupted
java.lang.InterruptedException: sleep interrupted
at java.lang.Thread.sleep(Native Method)
at org.apache.felix.gogo.shell.Activator.run(Activator.java:72)
at java.lang.Thread.run(Unknown Source)

因为我是才开始使用Eclipse进行E4 RCP的开发，对工程之间的环境也了解不足，提示已经很明确了"No application id has been found."，但我还是不知道应该如何解决，搜索了很久也没有找到适合我这个具体问题的解决方案。

解决方案

经过一番搜索后没有找到答案，我只能自己研究研究。于是重新创建一套正确的工程后，再手动创建一个Model Fragment，依然有同样的问题。

于是我就查了一下新建Model Fragment时新增了1个文件，另外只有2个配置文件发生了变化，build.properties和plugin.xml，内容如下：

build.properties

bin.includes = .,\
               META-INF/,\
               plugin.xml,\
               css/,\
               Application.e4xmi,\
               OSGI-INF/,\
               fragment.e4xmi
source.. = src/

plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<plugin>
   <extension point="org.eclipse.core.runtime.products">
      <product name="test" application="org.eclipse.fx.ui.workbench.fx.application">
         <property name="appName" value="test"></property>
         <property name="applicationXMI" value="App4.app/Application.e4xmi"></property>
         <property name="cssTheme" value="theme.default"></property>
      </product>
   </extension>
   <extension id="App4.app.fragment" point="org.eclipse.e4.workbench.model">
      <fragment uri="fragment.e4xmi"></fragment>
   </extension>
</plugin>

初始plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>
<plugin>
<extension id="product" point="org.eclipse.core.runtime.products">
  <product name="test" application="org.eclipse.fx.ui.workbench.fx.application" >
    <property name="appName" value="test" />
    <property name="applicationXMI" value="App3.app/Application.e4xmi" />
    <property name="cssTheme" value="theme.default" />
  </product>
</extension>
</plugin>

有较大区别的在plugin.xml，除了新增了一个extension标签配置fragment.e4xmi外，顶部的<?eclipse version="3.0"?>丢失了，最重要的是原始的extension中的id信息丢失了。

我手动将id="product"加回来，问题就解决了！

http://www.alanzeng.cn/2016/04/javafx-e4-rcp-model-fragment-no-application-id-has-been-found/

标签：

相关文章