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我在远程运行 Java Web Start 应用程序时遇到了问题。在本地运行时，没有这种问题。问题是，jar 文件未部署到本地临时文件夹（jnlp 文件已正确部署），因此向 Java 控制台抛出 FileNotFound 异常。

任何人都可以帮忙吗？

索引.html：

<body>
<!-- ... -->
<script src=
  "http://www.java.com/js/deployJava.js"></script>
<script>
    // using JavaScript to get location of JNLP
    // file relative to HTML page
    var dir = location.href.substring(0,
        location.href.lastIndexOf('/')+1);
    var url = dir + "myapp.jnlp";
    deployJava.createWebStartLaunchButton(url, '1.6.0');
</script>
<!-- ... -->

jnlp 文件：

<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="" href="">
<information>
    <title>mytitle</title>
    <vendor>mycompany</vendor>
    <offline-allowed/>
</information>
<resources>
    <!-- Application Resources -->
    <j2se version="1.6+" href=
       "http://java.sun.com/products/autodl/j2se"/>
    <jar href="myapp.jar"
        main="true" />

</resources>
<application-desc
     name="My Application">
 </application-desc>
 <update check="background"/>

Java 控制台抛出：异常：

com.sun.deploy.net.FailedDownloadException: Unable to load resource: file:/C:/DOCUME~1/myhome/LOCALS~1/Temp/myapp.jar
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.javaws.LaunchDownload$DownloadTask.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

包装异常：

java.io.FileNotFoundException: C:\DOCUME~1\myhome\LOCALS~1\Temp\myapp.jar (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileInputStream.<init>(Unknown Source)
at sun.net.www.protocol.file.FileURLConnection.connect(Unknown Source)
at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
at com.sun.deploy.net.BasicHttpRequest.doGetRequest(Unknown Source)
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.javaws.LaunchDownload$DownloadTask.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
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1 回答 1

2

您必须为 href 和 codebase 指定正确的值，Java Web Start 才能正常工作。原因是启动器可以选择调用一个新的 JVM，给定一个 JNLP 脚本的缓存副本，而与原始脚本没有任何联系。

于 2012-05-15T15:04:40.213 回答