我正在尝试使用Java Web Start运行Eclipse RCP应用程序。但是，在下载并运行应用程序后，我遇到此错误：
组件中的JNLP JREDesc被忽略：null
之后，应用程序关闭。这是什么解决方法？
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>
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>
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>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>
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>
答案 0 :(得分：1)
1.7尚未准备好生产。你可能已经发现了实施中的一个错误。
组件中的JNLP JREDesc被忽略：null
这是因为声明：
<j2se version="1.7+" />
在每个分机中。加载扩展时，已选择并运行JRE，它取决于主启动文件中指定的版本，以确保应用程序的版本正确。 （＆amp;所有扩展名）。
我实际上发现令人沮丧的是，向扩展用户指示所需的最低版本是一种简单的方法。 OTOH你可以把它作为评论。
答案 1 :(得分：0)
关于这个问题的几个问题（我有同样的）：
“忽略组件中的JNLP JREDesc：null”只是一个信息，而不是问题。当多个jnlp文件声明j2se版本时显示。第一个是采取的。
如果webstart正在关闭，这可能是由于不同的错误。尝试通过以下方式找出错误：打开文件 $ HOME / .java / deployment / deployment.properties 并设置 deployment.javaws.logToFile = true 和<强> deployment.javaws.logFileName = LOG_FILE 即可。重新启动您的webstart应用程序，然后阅读您的日志文件 LOG_FILE ，以便查看控制台无法显示的实际问题（因为它已关闭为快速）。
然后，即使webstart meachnism工作正常，你的eclipse RCP应用程序也没有。在这种情况下，您的LOG_FILE显示没有问题，但请注意在您的jnlp文件中使用“ osgi.instance.area ”指定的目录中。查看 .metadata / .log 文件或任何其他日志文件。如果这些日志文件中有任何显示，你应该尝试解决eclipse rcp问题。
顺便说一句，在我的情况下，我尝试了一个Eclipse RCP 4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的插件：
<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">