使用Java web start的Eclipse RCP应用程序未启动

我正在尝试使用JavaWebStart运行EclipseRCP应用程序。但是，我在下载并运行应用程序后遇到此错误：

忽略组件中的JNLP JREDesc:null

之后，应用程序关闭。解决这个问题的方法是什么

这是我的主要JNLP文件：

<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://localhost:8080/demoui-webstart/" href="start.jnlp"> 
  <information> 
    <title> Demo UI Application </title>  
    <vendor>Me</vendor>
    <homepage href="http://www.me.org" />
    <description>description</description> 
    <offline-allowed/>
  </information>

  <security>
    <all-permissions/>
  </security>

  <resources>
    <j2se version="1.7+"/>
    <jar href="plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar"/>
    <extension name="Wrapper feature" href="features/org.test.webstart.demo.wrapperfeature_0.1.0.jnlp"/>

    <property name="osgi.instance.area" value="@user.home/Application Data/demoui-rcp"/>
    <property name="osgi.configuration.area" value="@user.home/Application Data/demoui-rcp"/>

    <property name="eclipse.application" value="org.test.webstart.demo.plugin.application"/>
  </resources>

  <application-desc main-class="org.eclipse.equinox.launcher.WebStartMain">
    <argument>-nosplash</argument>
  </application-desc>
</jnlp>

演示UI应用程序
我
描述
-nosplash

org.test.webstart.demo.wrapperfeature_0.1.0.jnlp

<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0+" codebase="http://localhost:8080/demoui-webstart/">
    <information>
        <title>Wrapperfeature</title>
        <vendor>Me</vendor>
        <offline-allowed/>
    </information>
    <resources>
        <j2se version="1.7+" />
        <jar href="plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar"/>
        <extension href="features/org.test.webstart.demo.feature_0.1.0.jnlp" />
    </resources>
    <component-desc/>
</jnlp>

<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://localhost:8080/demoui-webstart/">
    <information>
        <title>Feature</title>
        <vendor>Me</vendor>
        <offline-allowed/>
    </information>
    <security>
        <all-permissions/>
    </security>

    <resources>
        <j2se version="1.7+" />
        <jar href="plugins/org.test.webstart.demo.plugin_0.1.0.jar"/>
        <extension href="features/org.eclipse.rcp_3.7.2.v20120120-1424-9DB5FmnFq5JCf1UA38R-kz0S0272.jnlp" />
    </resources>
    <component-desc/>
</jnlp>

包装特征
我

org.test.webstart.demo.feature_0.1.0.jnlp

<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0+" codebase="http://localhost:8080/demoui-webstart/">
    <information>
        <title>Wrapperfeature</title>
        <vendor>Me</vendor>
        <offline-allowed/>
    </information>
    <resources>
        <j2se version="1.7+" />
        <jar href="plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar"/>
        <extension href="features/org.test.webstart.demo.feature_0.1.0.jnlp" />
    </resources>
    <component-desc/>
</jnlp>

<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://localhost:8080/demoui-webstart/">
    <information>
        <title>Feature</title>
        <vendor>Me</vendor>
        <offline-allowed/>
    </information>
    <security>
        <all-permissions/>
    </security>

    <resources>
        <j2se version="1.7+" />
        <jar href="plugins/org.test.webstart.demo.plugin_0.1.0.jar"/>
        <extension href="features/org.eclipse.rcp_3.7.2.v20120120-1424-9DB5FmnFq5JCf1UA38R-kz0S0272.jnlp" />
    </resources>
    <component-desc/>
</jnlp>

特征
我

org.eclipse.rcp_3.7.2.v20120120-1424-9DB5FmnFq5JCf1UA38R-kz0S0272

<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://localhost:8080/demoui-webstart/">
    <information>
        <title>Eclipse RCP</title>
        <vendor>Eclipse.org</vendor>
        <offline-allowed/>
    </information>
    <security>
        <all-permissions/>
    </security>
    <component-desc/>
    <resources>
        <j2se version="1.7+" />
    </resources>
    <resources>
        <jar href="plugins/com.ibm.icu_4.4.2.v20110823.jar"/>
        <jar href="plugins/org.eclipse.core.commands_3.6.0.I20110111-0800.jar"/>
        <jar href="plugins/org.eclipse.core.databinding_1.4.0.I20110111-0800.jar"/>
        <jar href="plugins/org.eclipse.core.databinding.observable_1.4.0.I20110222-0800.jar"/>
        <jar href="plugins/org.eclipse.core.databinding.property_1.4.0.I20110222-0800.jar"/>
        <jar href="plugins/org.eclipse.core.databinding.beans_1.2.100.I20100824-0800.jar"/>
        <jar href="plugins/org.eclipse.core.jobs_3.5.101.v20120113-1953.jar"/>
        <jar href="plugins/org.eclipse.core.expressions_3.4.300.v20110228.jar"/>
        <jar href="plugins/org.eclipse.core.runtime_3.7.0.v20110110.jar"/>
        <jar href="plugins/org.eclipse.core.runtime.compatibility.auth_3.2.200.v20110110.jar"/>
        <jar href="plugins/org.eclipse.osgi_3.7.2.v20120110-1415.jar"/>
        <jar href="plugins/org.eclipse.osgi.services_3.3.0.v20110513.jar"/>
        <jar href="plugins/org.eclipse.help_3.5.100.v20110426.jar"/>
        <jar href="plugins/org.eclipse.swt_3.7.2.v3740f.jar"/>
        <jar href="plugins/org.eclipse.jface_3.7.0.v20110928-1505.jar"/>
        <jar href="plugins/org.eclipse.jface.databinding_1.5.0.I20100907-0800.jar"/>
        <jar href="plugins/org.eclipse.ui_3.7.0.v20110928-1505.jar"/>
        <jar href="plugins/org.eclipse.ui.workbench_3.7.1.v20120104-1859.jar"/>
    </resources>
    <resources os="Mac">
        <jar href="plugins/org.eclipse.ui.carbon_4.0.100.I20101109-0800.jar"/>
    </resources>
    <resources os="Mac">
        <jar href="plugins/org.eclipse.ui.cocoa_1.1.0.I20101109-0800.jar"/>
    </resources>
    <resources>
        <jar href="plugins/org.eclipse.update.configurator_3.3.100.v20100512.jar"/>
        <jar href="plugins/org.eclipse.equinox.simpleconfigurator_1.0.200.v20110815-1438.jar"/>
    </resources>
    <resources os="Windows" arch="x86">
        <jar href="plugins/org.eclipse.swt.win32.win32.x86_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Windows" arch="x86_64">
        <jar href="plugins/org.eclipse.swt.win32.win32.x86_64_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Linux" arch="x86">
        <jar href="plugins/org.eclipse.swt.gtk.linux.x86_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Linux" arch="s390x">
        <jar href="plugins/org.eclipse.swt.gtk.linux.s390x_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Linux" arch="s390">
        <jar href="plugins/org.eclipse.swt.gtk.linux.s390_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Solaris" arch="sparc">
        <jar href="plugins/org.eclipse.swt.gtk.solaris.sparc_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Solaris" arch="x86">
        <jar href="plugins/org.eclipse.swt.gtk.solaris.x86_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Linux" arch="ppc64">
        <jar href="plugins/org.eclipse.swt.gtk.linux.ppc64_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Linux" arch="x86_64">
        <jar href="plugins/org.eclipse.swt.gtk.linux.x86_64_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Mac" arch="ppc">
        <jar href="plugins/org.eclipse.swt.carbon.macosx_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Mac" arch="x86">
        <jar href="plugins/org.eclipse.swt.carbon.macosx_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Mac" arch="ppc">
        <jar href="plugins/org.eclipse.swt.cocoa.macosx_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Mac" arch="x86">
        <jar href="plugins/org.eclipse.swt.cocoa.macosx_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="Mac" arch="x86_64">
        <jar href="plugins/org.eclipse.swt.cocoa.macosx.x86_64_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="AIX" arch="ppc">
        <jar href="plugins/org.eclipse.swt.gtk.aix.ppc_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="AIX" arch="ppc64">
        <jar href="plugins/org.eclipse.swt.gtk.aix.ppc64_3.7.2.v3740f.jar"/>
    </resources>
    <resources os="HP-UX" arch="ia64_32">
        <jar href="plugins/org.eclipse.swt.gtk.hpux.ia64_32_3.7.2.v3740f.jar"/>
    </resources>
    <resources>
        <jar href="plugins/org.eclipse.rcp_3.7.2.v201202080800.jar"/>
        <jar href="plugins/org.eclipse.core.contenttype_3.4.100.v20110423-0524.jar"/>
        <jar href="plugins/org.eclipse.equinox.app_1.3.100.v20110321.jar"/>
        <jar href="plugins/org.eclipse.equinox.common_3.6.0.v20110523.jar"/>
        <jar href="plugins/org.eclipse.equinox.ds_1.3.1.R37x_v20110701.jar"/>
        <jar href="plugins/org.eclipse.equinox.util_1.0.300.v20110502.jar"/>
        <jar href="plugins/org.eclipse.equinox.preferences_3.4.2.v20120111-2020.jar"/>
        <jar href="plugins/org.eclipse.equinox.registry_3.5.101.R37x_v20110810-1611.jar"/>
        <jar href="plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar"/>
    </resources>
    <resources os="Solaris" arch="sparc">
        <jar href="plugins/org.eclipse.equinox.launcher.gtk.solaris.sparc_1.1.100.v20110505.jar"/>
    </resources>
    <resources os="Solaris" arch="x86">
        <jar href="plugins/org.eclipse.equinox.launcher.gtk.solaris.x86_1.1.100.v20110505.jar"/>
    </resources>
    <resources os="Mac" arch="ppc">
        <jar href="plugins/org.eclipse.equinox.launcher.carbon.macosx_1.1.100.v20110502.jar"/>
    </resources>
    <resources os="Mac" arch="x86">
        <jar href="plugins/org.eclipse.equinox.launcher.carbon.macosx_1.1.100.v20110502.jar"/>
    </resources>
    <resources os="Mac" arch="ppc">
        <jar href="plugins/org.eclipse.equinox.launcher.cocoa.macosx_1.1.101.v20120109-1504.jar"/>
    </resources>
    <resources os="Mac" arch="x86">
        <jar href="plugins/org.eclipse.equinox.launcher.cocoa.macosx_1.1.101.v20120109-1504.jar"/>
    </resources>
    <resources os="Mac" arch="x86_64">
        <jar href="plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.101.v20120109-1504.jar"/>
    </resources>
    <resources os="Linux" arch="ppc64">
        <jar href="plugins/org.eclipse.equinox.launcher.gtk.linux.ppc64_1.0.100.v20110505.jar"/>
    </resources>
    <resources os="Linux" arch="x86">
        <jar href="plugins/org.eclipse.equinox.launcher.gtk.linux.x86_1.1.100.v20110505.jar"/>
    </resources>
    <resources os="Linux" arch="s390x">
        <jar href="plugins/org.eclipse.equinox.launcher.gtk.linux.s390x_1.1.100.v20110505.jar"/>
    </resources>
    <resources os="Linux" arch="s390">
        <jar href="plugins/org.eclipse.equinox.launcher.gtk.linux.s390_1.1.100.v20110505.jar"/>
    </resources>
    <resources os="Linux" arch="x86_64">
        <jar href="plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.100.v20110505.jar"/>
    </resources>
    <resources os="AIX" arch="ppc">
        <jar href="plugins/org.eclipse.equinox.launcher.gtk.aix.ppc_1.1.0.v20110530.jar"/>
    </resources>
    <resources os="AIX" arch="ppc64">
        <jar href="plugins/org.eclipse.equinox.launcher.gtk.aix.ppc64_1.1.0.v20110530.jar"/>
    </resources>
    <resources os="Windows" arch="x86">
        <jar href="plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.100.v20110502.jar"/>
    </resources>
    <resources os="Windows" arch="x86_64">
        <jar href="plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.100.v20110502.jar"/>
    </resources>
</jnlp>

富客户端平台
Eclipse.org

1.7尚未投入生产。可能是您在实现中发现了一个bug

---

忽略组件中的JNLP JREDesc:null

这是因为声明：

 <j2se version="1.7+" />

在每个扩展中。加载扩展时，JRE已被选择并正在运行，它将达到主启动文件中指定的版本，以确保应用程序的正确版本。（&所有扩展名）

---

实际上，我觉得这很令人沮丧，因为向扩展的用户指出所需的最低版本是一种简单的方法。o你可以把它改为评论。

关于这个问题的几个问题（我有相同的问题）：

• “忽略组件中的JNLP JREDesc:null”只是一个信息，不是问题。当多个jnlp文件声明一个j2se版本时，它会显示出来。第一个被拿走了

• 如果webstart正在关闭，这可能是由于另一个错误造成的。尝试用以下方法找出错误：打开文件$HOME/.java/deployment/deployment.properties并设置deployment.javaws.logToFile=true和deployment.javaws.logFileName=LOG\u文件。重新启动webstart应用程序，然后读取日志文件log\u文件，以查看控制台无法显示的实际问题（因为它关闭太快）

• 然后，也有可能，即使webstart meachnism运行良好，您的EclipseRCP应用程序也不能。在这种情况下，您的日志_文件显示没有问题，但考虑到jnlp文件中用“osgi.instance.area”指定的目录。在那里查找.metadata/.log文件或任何其他日志文件。如果这些日志文件中显示了任何问题，那么您应该尝试解决eclipse rcp问题

• 顺便说一下，在5月份的情况下，我尝试了EclipseRCP4应用程序。要使用Webstart运行RCP 4应用程序，必须将以下属性添加到主jnlp文件（在resources标记下），以确保以一致的方式加载一些重要插件：

  <property name="osgi.bundles"
       value="org.eclipse.core.runtime@4:start,
              org.eclipse.equinox.common@3:start,
              org.eclipse.equinox.ds@2:start,org.
              eclipse.equinox.simpleconfigurator@1:start">
  

---

确保使用验证JNLP。我尝试了JaNeLA，JNLP没有错误。但是，应用程序无法启动。这些信息与“JREDesc in Component ignored:”不一致：使用了什么组件（扩展）JNLP？它们的内容是什么？基本上，除了主JNLP之外，我还有三个JNLP。两个特性项目（EclipseRCP）和另一个由EclipseRCP生成的项目。“我试过JaNeLA，JNLP没有错误。”你在看哪个‘JaNeLA’？当我在JaNeLA中加载JNLP时，我看到了它的错误。其中有两个原因是缺少

组件desc

，但至少有一个原因是显而易见的，即使是对JNLP编辑文本的眼珠观察。另外，您提到了3个扩展，而JNLP只列出了一个扩展。其他两个在哪里列出？