我喜欢使用Java Web Start将我的Java游戏演示到网上,以便用户可以查看游戏角色等等。
我使用Eclipse export runnable jar功能将项目导出到jar文件。然后我成功地使用java -jar
运行它。我设置了test.jnlp
文件,如下所示:
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0+" codebase="/home/bili/JWSdeploytest/" href="test.jnlp">
<information>
<title>Demo</title>
<vendor>binman</vendor>
<description>Test</description>
<offline-allowed/>
</information>
<resources>
<jar href="LoadbonesFOrmat.jar" main="true"/>
<extension name="Demo" href="test.jnlp" />
</resources>
<security>
<all-permissions/>
</security>
<application-desc />
</jnlp>
我尝试在我的机器上本地测试它,并启用调试打开,我在这里阅读其他文章:
set JAVAWS_TRACE_NATIVE=1
set JAVAWS_VM_ARGS="-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket, address=8989,server=y,suspend=n"
但是当我跑javaws test.jnlp
时,我得到了StackOverflowError
。以下是输出:
bili@bili-SFF:~/JWSdeploytest$ javaws -J test.jnlp
Exception in thread "Demo" java.lang.StackOverflowError
at java.util.LinkedHashMap$LinkedHashIterator.<init>(LinkedHashMap.java:362)
at java.util.LinkedHashMap$LinkedHashIterator.<init>(LinkedHashMap.java:362)
at java.util.LinkedHashMap$KeyIterator.<init>(LinkedHashMap.java:400)
at java.util.LinkedHashMap$KeyIterator.<init>(LinkedHashMap.java:400)
at java.util.LinkedHashMap.newKeyIterator(LinkedHashMap.java:413)
at java.util.HashMap$KeySet.iterator(HashMap.java:891)
at java.io.ExpiringCache.cleanup(ExpiringCache.java:117)
at java.io.ExpiringCache.get(ExpiringCache.java:74)
at java.io.UnixFileSystem.canonicalize(UnixFileSystem.java:152)
at java.io.File.getCanonicalPath(File.java:576)
at sun.security.provider.PolicyFile.canonPath(PolicyFile.java:1872)
at java.io.FilePermission$1.run(FilePermission.java:203)
at java.io.FilePermission$1.run(FilePermission.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.io.FilePermission.init(FilePermission.java:200)
at java.io.FilePermission.<init>(FilePermission.java:266)
at java.lang.SecurityManager.checkRead(SecurityManager.java:888)
at net.sourceforge.jnlp.config.DeploymentConfiguration.getProperty(DeploymentConfiguration.java:269)
at net.sourceforge.jnlp.SecurityDesc.getCustomTrustedPolicy(SecurityDesc.java:172)
at net.sourceforge.jnlp.SecurityDesc.<init>(SecurityDesc.java:159)
at net.sourceforge.jnlp.Parser.getSecurity(Parser.java:553)
at net.sourceforge.jnlp.JNLPFile.parse(JNLPFile.java:594)
at net.sourceforge.jnlp.JNLPFile.<init>(JNLPFile.java:178)
at net.sourceforge.jnlp.JNLPFile.<init>(JNLPFile.java:211)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:351)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeExtensions(JNLPClassLoader.java:370)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:174)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:295)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:351)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeExtensions(JNLPClassLoader.java:370)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:174)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:295)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:351)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeExtensions(JNLPClassLoader.java:370)
三线295:351:370重复了十几次。 它从输出中看起来好像存在一些限制访问。我检查并验证了Jar文件,jnlp是否允许执行/读取。
我开始怀疑我是否需要一个Web服务器来测试它。然而,由于我以前从未与JWS合作,因此很少有事情在我的脑海中产生怀疑:
test.jnlp
未正确配置关于如何解决这个JWS业务的任何指示?
编辑:我删除了extention元素,并抛出另一个异常:
bili@bili-SFF:~/JWSdeploytest$ javaws test.jnlp
net.sourceforge.jnlp.LaunchException: Fatal: Launch Error: Could not launch JNLP file.
at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:596)
at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:887)
Caused by: java.lang.IllegalArgumentException: file:/home/bili/JWSdeploytest/LoadbonesFOrmat.jar is not a cacheable resource
at net.sourceforge.jnlp.cache.CacheUtil.getCacheFile(CacheUtil.java:297)
at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:561)
... 1 more
Caused by:
java.lang.IllegalArgumentException: file:/home/bili/JWSdeploytest/LoadbonesFOrmat.jar is not a cacheable resource
at net.sourceforge.jnlp.cache.CacheUtil.getCacheFile(CacheUtil.java:297)
at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:561)
at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:887)
这个看起来更直观,这次我很肯定我没有正确打包Jar文件。稍后再试一次。 以下是JaNeLA的输出:
content type application/xml does not equal expected type of application/x-java-jnlp-file
XML encoding not known, but declared as utf-8
Codebase '/home/bili/JWSdeploytest/' is a malformed URL! Defaulting to file:/home/bili/JWSdeploytest/test.jnlp
Codebase '/home/bili/JWSdeploytest/' is a malformed URL! Defaulting to file:/home/bili/JWSdeploytest/test.jnlp
Codebase '/home/bili/JWSdeploytest/' is a malformed URL! Defaulting to file:/home/bili/JWSdeploytest/test.jnlp
Codebase '/home/bili/JWSdeploytest/' is a malformed URL! Defaulting to file:/home/bili/JWSdeploytest/test.jnlp
Downloads can be optimized by specifying a resource size for 'LoadbonesFOrmat.jar'.
The resource download at LoadbonesFOrmat.jar can be optimized by removing the (default) value of download='eager'.
Lazy downloads might not work as expected for LoadbonesFOrmat.jar unless the download 'part' is specified.
我已经将安全元素移到了资源元素之上,以摆脱cvc-complex-type.2.4.a:根据JaNeLa网站上的帮助文件。在控制台中,它说文档有效,但数据可能仍然是错误的!
答案 0 :(得分:2)
JNLP文件有许多可疑方面。大多数特别是它是test.jnlp
,但也声称要加载相同名称的扩展名!这可能是导致堆栈溢出的原因。
使用JaNeLA验证JNLP。它还将确定一些其他问题。作为JaNeLA的作者,我很想知道它是否也会抛出StackOverflowError
,因为它试图验证主要的JNLP 以及任何扩展。我怀疑它会进入一个无限循环(请报告回来)。
我猜测只有一个Jar。如果是这种情况,请删除整个extension
元素。
顺便说一句 - 是真正称为LoadbonesFOrmat.jar
的Jar吗?这是大写字母的非常奇怪的使用,我会称之为LoadbonesFormat.jar
或LoadBonesFormat.jar
(即没有大写O
)。