[英]Slick2d - LWJGL Applet not finding /LZMA/LzmaInputStream
[英]Load images/sounds with LWJGL/Slick2d applet
嘗試在Applet上加載圖像或聲音時出現問題。 我對applet和Slick2d使用LWJGL加載圖像/聲音。 但是,當我使用Netbeans啟動applet時,沒有問題...我使用了用於加載聲音的代碼:
public class Files {
public static Audio sound;
public static void load() {
try {
sound = AudioLoader.getAudio("WAV", ResourceLoader.getResourceAsStream("/snd/Tir1-16b.wav"));
} catch (IOException ex) {
Logger.getLogger(Files.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println("loaded with success !");
}
}
還有HTML頁面:
<applet code="org.lwjgl.util.applet.AppletLoader" archive="lwjgl_util_applet.jar" codebase="." width="800" height="600">
<!-- The following tags are mandatory -->
<!-- Name of Applet, will be used as name of directory it is saved in, and will uniquely identify it in cache -->
<param name="al_title" value="appletloadertest">
<!-- Main Applet Class -->
<param name="al_main" value="myapps.MyApps">
<!-- List of Jars to add to classpath -->
<param name="al_jars" value="lwjgl_applet.jar, lwjgl.jar, jinput.jar, lwjgl_util.jar MyApps.jar">
<!-- signed windows natives jar in a jar -->
<param name="al_windows" value="windows_natives.jar">
<!-- signed linux natives jar in a jar -->
<param name="al_linux" value="linux_natives.jar">
<!-- signed mac osx natives jar in a jar -->
<param name="al_mac" value="macosx_natives.jar">
<!-- signed solaris natives jar in a jar -->
<param name="al_solaris" value="solaris_natives.jar">
<!-- Tags under here are optional -->
<!-- whether to use cache - defaults to true -->
<!-- <param name="al_cache" value="true"> -->
<!-- Version of Applet (case insensitive String), applet files not redownloaded if same version already in cache -->
<!-- <param name="al_version" value="0.1"> -->
<!-- Specify the minimum JRE version required by your applet, defaults to "1.5" -->
<!-- <param name="al_min_jre" value="1.6"> -->
<!-- background color to paint with, defaults to white -->
<!-- <param name="boxbgcolor" value="#000000"> -->
<!-- foreground color to paint with, defaults to black -->
<!-- <param name="boxfgcolor" value="#ffffff"> -->
<!-- logo to paint while loading, will be centered, defaults to "appletlogo.gif" -->
<!-- <param name="al_logo" value="appletlogo.gif"> -->
<!-- progressbar to paint while loading. Will be painted on top of logo, width clipped to percentage done, defaults to "appletprogress.gif" -->
<!-- <param name="al_progressbar" value="appletprogress.gif"> -->
<!-- whether to run in debug mode -->
<!-- <param name="al_debug" value="true"> -->
<!-- whether to prepend host to cache path - defaults to true -->
<!-- <param name="al_prepend_host" value="true"> -->
<param name="separate_jvm" value="true">
</applet>
當我使用applet啟動HTML頁面時,控制台日志顯示了什么:
null
java.lang.reflect.InvocationTargetException
at java.awt.EventQueue.invokeAndWait(Unknown Source)
at java.awt.EventQueue.invokeAndWait(Unknown Source)
at org.lwjgl.util.applet.AppletLoader.run(AppletLoader.java:906)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: org/newdawn/slick/util/ResourceLoader
at myapps.Files.load(Files.java:24)
at myapps.MyApps.init(MyApps.java:32)
at org.lwjgl.util.applet.AppletLoader.switchApplet(AppletLoader.java:1330)
at org.lwjgl.util.applet.AppletLoader$2.run(AppletLoader.java:909)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.newdawn.slick.util.ResourceLoader
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 18 more
null肯定意味着變量Audio為null。 這也意味着可能找不到該文件...因此,我嘗試將目錄“ snd”和“ sprites”放在applet目錄以及我的applet的.jar上,但沒有任何反應...
誰能幫助我? 我花了很多時間試圖在許多論壇上也找到這種問題,但是沒人幫助我...
非常感謝 !
感謝您的回答。 我通過在HTML頁面中添加“ slick.jar”來解決NoClassDefFoundError
的問題,如下所示:
<param name="al_jars" value="MyApps.jar lwjgl_applet.jar, lwjgl.jar, jinput.jar, lwjgl_util.jar slick.jar">
但是現在我有另一個問題:
This occurred while 'Initializing real applet'
access denied ("java.io.FilePermission" ".\snd\Tir1-16b.wav" "read")
java.security.AccessControlException: access denied ("java.io.FilePermission" ".\snd\Tir1-16b.wav" "read")
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkRead(Unknown Source)
at java.io.File.exists(Unknown Source)
at org.newdawn.slick.util.FileSystemLocation.getResourceAsStream(FileSystemLocation.java:52)
at org.newdawn.slick.util.ResourceLoader.getResourceAsStream(ResourceLoader.java:61)
at myapps.Files.load(Files.java:24)
at myapps.MyApps.init(MyApps.java:32)
at org.lwjgl.util.applet.AppletLoader.switchApplet(AppletLoader.java:1330)
at org.lwjgl.util.applet.AppletLoader$2.run(AppletLoader.java:909)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
我已經閱讀了很多有關此問題的內容,並且嘗試使用以下命令對MyApps.jar進行簽名:
keytool -genkey -keyalg rsa -alias key
keytool -export -alias key -file cert.crt
jarsigner MyApps.jar key
簽名者之所以能夠工作,是因為現在我可以在MyApps.jar的META-INF上看到文件“ KEY.RSA”和“ KEY.SF”。 但是問題仍然在這里...
我需要一些幫助,我只是不了解這個問題...
謝謝 !
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