通过文件名

通过文件名

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使用Java Web Start通过文件名在命令行上启动应用程序

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本文介绍了使用Java Web Start通过文件名在命令行上启动应用程序的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我可以使用Java Web Start通过带有jdk 6&的URL在命令行上启动我的Swing GUI应用程序. Windows XP:javaws http://localhost:7001/webstart/myapp/launch.jnlp

I can use Java web start to start my Swing GUI application on the command line by the url with jdk 6 & Windows XP:javaws http://localhost:7001/webstart/myapp/launch.jnlp

如何使用Java Web Start在命令行中通过文件名启动我的Swing GUI应用程序?

How to use Java web start to start my Swing GUI application on the command line by the file name?

以下方法不起作用: javaws -codebase''launch.jnlp java.net.MalformedURLException:无协议:" 在java.net.URL.(未知来源) 在java.net.URL.(未知来源) 在java.net.URL.(未知来源) 在com.sun.javaws.Main.parseArgs处(未知来源) 在com.sun.javaws.Main.continueInSecureThread(未知来源)上 在com.sun.javaws.Main $ 1.run(未知源) 在java.lang.Thread.run(未知来源)

The following ways do not work: javaws -codebase '' launch.jnlp java.net.MalformedURLException: no protocol: '' at java.net.URL.(Unknown Source) at java.net.URL.(Unknown Source) at java.net.URL.(Unknown Source) at com.sun.javaws.Main.parseArgs(Unknown Source) at com.sun.javaws.Main.continueInSecureThread(Unknown Source) at com.sun.javaws.Main$1.run(Unknown Source) at java.lang.Thread.run(Unknown Source)

javaws -codebase "" launch.jnlp
java.net.MalformedURLException: unknown protocol: c
    at java.net.URL.<init>(Unknown Source)
    at java.net.URL.<init>(Unknown Source)
    at java.net.URL.<init>(Unknown Source)
    at com.sun.javaws.Main.parseArgs(Unknown Source)
    at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
    at com.sun.javaws.Main$1.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

javaws -codebase "file:." launch.jnlp
com.sun.deploy.net.FailedDownloadException: Unable to load resource: file:./$$name
    at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)
    at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
    at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
    at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
    at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
    at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
    at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
    at com.sun.javaws.Launcher.updateFinalLaunchDesc(Unknown Source)
    at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
    at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
    at com.sun.javaws.Launcher.launch(Unknown Source)
    at com.sun.javaws.Main.launchApp(Unknown Source)
    at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
    at com.sun.javaws.Main$1.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

javaws -codebase "file:." file://launch.jnlp
CouldNotLoadArgumentException[ Could not load file/URL specified: file://launch.jnlp]
    at com.sun.javaws.Main.launchApp(Unknown Source)
    at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
    at com.sun.javaws.Main$1.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

javaws file://launch.jnlp
CouldNotLoadArgumentException[ Could not load file/URL specified: file://launch.jnlp]
    at com.sun.javaws.Main.launchApp(Unknown Source)
    at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
    at com.sun.javaws.Main$1.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

#The following has no error message, but nothing appear on the computer screen:
javaws -codebase "" -J-Xrunjdwp:transport=dt_socket launch.jnlp
javaws -J-Xdebug -J-Xnoagent -J-Xrunjdwp:transport=dt_socket,server=n,suspend=y launch.jnlp
javaws -codebase "" -J-Xrunjdwp:transport=dt_socket,server=n,suspend=n launch.jnlp
javaws -codebase "" -J-Xrunjdwp:transport=dt_socket,server=y,suspend=n launch.jnlp

launch.jnlp文件如下:

The launch.jnlp file is as follows: 

<?xml version="1.0" encoding="utf-8"?>

<jnlp spec="1.0+" codebase="$$codebase" href="$$name">

  <information>
    <title>${com.prod.my.myapp.common.client.title}</title>
    <vendor>I</vendor>
    <homepage href="http://devzone/english/dev%20template/html_templates/main.asp"/>
    <description>${com.prod.my.myapp.common.client.description}</description>
    <description kind="short">${com.prod.my.myapp.common.client.short_description}</description>
    <icon href="$$context/images/chflag.jpg"/>
  </information>

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

  <resources>

  <java version="1.6.0_05" href="http://java.sun.com/products/autodl/j2se" max-heap-size="256m"/>

    <!-- myapp Application -->
    <jar href="myprod.myapp.client.jar"/>
    <jar href="myprod.reports.jar"/>

    <!-- TR Client jar -->
    <jar href="extern.ejb-client.jar"/>

    <property name="java.naming.factory.initial" value="weblogic.jndi.WLInitialContextFactory"/>
    <property name="java.naming.provider.url" value="${com.prod.my.myapp.common.client.naming_provider}"/>
    <property name="weblogic.jndi.enableServerAffinity" value="true" /

  </resources>

  <application-desc main-class="com.prod.my.myapp.common.framework.applicationmainwindow.gui.myappAp­plication"/

</jnlp>

推荐答案

似乎您的JNLP文件应与 JNLPDownloadServlet .根据您的应用程序当前运行的服务器，它将$$name和$$codebase占位符替换为当前值. (顺便说一句，您也可以使用$$server引用当前服务器)

It seems your JNLP file should be used together with the JNLPDownloadServlet. It replaces the $$name and $$codebase palceholders with the current values based on the server where you application currently runs. (Btw. you can also use $$server to refer the current server)

如果从磁盘本地运行它，则可以通过在命令行上将codebase设置为参数-codebase来覆盖它.正确的值是file:..您的问题是$$name占位符未替换，它尝试将<jnlp ... href="$$name">下载到file:.$$name，并且由于不存在此类文件，因此它会失败.

If you run it locally from disk, you can overwrite the codebase by setting it on the command line as parameter -codebase. The right value is file:.. You problem is that the $$name placeholder is not replaced and it tries do download the <jnlp ... href="$$name"> which results to file:.$$name and since no such file exists it fails.

您可以在本地运行时完全忽略<jnlp />标记中的href="$$name"属性，也可以手动将其更改为jnlp文件名，例如<jnlp ... href="myApp.jnlp" />.

You can either completely omitt the href="$$name" attribute in the <jnlp /> tag when running locally or manually change it to the jnlp file name e.g. <jnlp ... href="myApp.jnlp" />.

也要记住，如果要使用磁盘上存储的某些本地jar，并且要通过绝对路径引用它，则应使用此格式<jar href="file:c:/myJars/myJar.jar">(正斜杠).

Also remeber if you want to use some local jar stored on you disk and you want to refer it via absolute path you should use this format <jar href="file:c:/myJars/myJar.jar"> (forward slashes).

祝一切顺利.

这篇关于使用Java Web Start通过文件名在命令行上启动应用程序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

08-14 19:35
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