我想配置我的webstart应用程序/jnlp，以便如果没有可用的互联网连接，它将从缓存开始。 但是，尽管我进行了以下配置，但是当我断开与Internet的连接时，总是会收到NoRouteToHostException或UnknownHostException异常。
我认为我已经设置了允许离线使用并正确更新标签/属性；我无法找到Webstart仍尝试查找主机的原因。
当我连接时，我确实确实从上一个开始就缓存了该应用程序。
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="6.0+" codebase="http://cms.mydomain.com/sync/" href="myAppSync.jnlp">
<information>
<title>My App Sync</title>
<vendor>My Company</vendor>
<homepage href="http://www.myapp.com/"/>
<description>Sync application for My App</description>
<icon href="ATTico.png"/>
<!-- allow app to run without Internet access -->
<offline-allowed/>
<shortcut online="true">
<desktop/>
<!-- create menu item for this app under the major heading 'My App' -->
<menu submenu="My App"/>
</shortcut>
</information>
<security>
<all-permissions/>
</security>
<update check="timeout" policy="always" />
<resources>
<java version="1.6*" href="http://java.sun.com/products/autodl/j2se"/>
<jar href="lib/myAppSync.jar" />
<jar href="lib/apache-mime4j-0.6.jar" />
<jar href="lib/commons-logging-1.1.1.jar" />
<jar href="lib/commons-codec-1.3.jar" />
<jar href="lib/httpclient-4.0.1.jar" />
<jar href="lib/httpcore-4.0.1.jar" />
<jar href="lib/httpmime-4.0.1.jar" />
<jar href="lib/swingx-1.6.jar" />
<jar href="lib/swingx-beaninfo-1.6.jar" />
</resources>
<application-desc main-class="com.myapp.sync.forms.Main"/>
</jnlp>
错误日志:
java.net.NoRouteToHostException: No route to host: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
at com.sun.deploy.net.BasicHttpRequest.doGetRequestEX(Unknown Source)
at com.sun.deploy.net.DownloadEngine.isUpdateAvailable(Unknown Source)
at com.sun.deploy.net.DownloadEngine.isUpdateAvailable(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.downloadJarFiles(Unknown Source)
at com.sun.javaws.LaunchDownload.downloadEagerorAll(Unknown Source)
at com.sun.javaws.Launcher.downloadResources(Unknown Source)
at com.sun.javaws.Launcher.prepareLaunchFile(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)
java.net.UnknownHostException: cms.mydomain.com
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
at com.sun.deploy.net.BasicHttpRequest.doGetRequestEX(Unknown Source)
at com.sun.deploy.net.DownloadEngine.isUpdateAvailable(Unknown Source)
at com.sun.deploy.net.DownloadEngine.isUpdateAvailable(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.downloadJarFiles(Unknown Source)
at com.sun.javaws.LaunchDownload.downloadEagerorAll(Unknown Source)
at com.sun.javaws.Launcher.downloadResources(Unknown Source)
at com.sun.javaws.Launcher.prepareLaunchFile(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)
最佳答案
我已经找到了通过-offline参数从命令行调用javaws的解决方案，但是我发现这很奇怪，这很奇怪，想知道为什么系统无法自动检测到我处于脱机状态，从而导致检查超时并启动应用程序从缓存，如我的jnlp中所定义。
javaws -offline myApp.jnlp
关于Java Webstart无法离线工作(NoRouteToHostException/UnknownHostException)，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/3705803/