我正在使用JOGL为一些OpenGL ES开发一个applet。在eclipse中我可以启动applet但是在浏览器中我遇到了麻烦,因为java控制台在我创建GLCanvas实例的行中打印了NoSuchMethodError。
GLProfile glp = GLProfile.get(GLProfile.GL2ES2);
GLCapabilities caps = new GLCapabilities(glp);
caps.setSampleBuffers(true);
caps.setNumSamples(8);
glCanvas = new GLCanvas(caps); // throws NoSuchMethodError
例外:
Exception in thread "thread applet-de.beuthhochschule.bachelor.martin.Benchmark-1" java.lang.NoSuchMethodError: javax.media.opengl.awt.GLCanvas.<init>(Ljavax/media/opengl/GLCapabilities;)V
at de.beuthhochschule.bachelor.martin.Benchmark.initComponents(Benchmark.java:60)
at de.beuthhochschule.bachelor.martin.Benchmark.init(Benchmark.java:42)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Plugin2Manager.java:1620)
at java.lang.Thread.run(Thread.java:662)
我创建了一个有和没有jogl libs(jogl,gluegen,nativewindow和newt)的jar,但它只是不起作用。 有人有想法吗?
我的JNLP:
<?xml version="1.0" encoding="utf-8"?>
<jnlp href="applet-benchmark.jnlp" codebase=".">
<information>
<title>WebGL-Benchmark</title>
<vendor>Martin Breuer</vendor>
<homepage href="http://localhost/"/>
<description>Native reference implementation</description>
<description kind="short">Reference implementation of the WebGL Benchmark</description>
<offline-allowed/>
</information>
<resources>
<j2se href="http://java.sun.com/products/autodl/j2se" version="1.6+"/>
<property name="sun.java2d.noddraw" value="true"/>
<jar href="http://localhost/benchmark.jar" main="true"/>
<extension name="newt-all-awt" href="http://jogamp.org/deployment/webstart/newt-all-awt.jnlp" />
</resources>
<applet-desc
name="WebGL-Benchmark"
main-class="de.beuthhochschule.bachelor.martin.Benchmark"
width="660"
height="500">
</applet-desc>
</jnlp>
我的小程序标签:
<applet codebase="." code="org.jdesktop.applet.util.JNLPAppletLauncher" width=600 height=400
archive="http://jogamp.org/deployment/util/applet-launcher.jar,
http://jogamp.org/deployment/webstart/nativewindow.all.jar,
http://jogamp.org/deployment/webstart/jogl.all.jar,
http://jogamp.org/deployment/webstart/gluegen-rt.jar,
http://jogamp.org/deployment/webstart/newt.all.jar">
<param name="codebase_lookup" value="true">
<param name="subapplet.classname" value="de.beuthhochschule.bachelor.martin.Benchmark">
<param name="subapplet.displayname" value="WebGL-Benchmark">
<param name="noddraw.check" value="true">
<param name="progressbar" value="true">
<param name="jnlpNumExtensions" value="1">
<param name="jnlpExtension1" value="http://jogamp.org/deployment/webstart/jogl-core.jnlp">
<param name="java_arguments" value="-Dsun.java2d.noddraw=true -Dsun.java2d.opengl=false">
<param name="jnlp_href" value="http://localhost/applet-benchmark.jnlp">
</applet>
完整的控制台日志:http://pastebin.com/xjk84pTV(日志部分翻译成德语,不知道如何更改...)
更新
自己提供基本的jogl库并没有改变任何东西......
<resources>
<j2se href="http://java.sun.com/products/autodl/j2se" version="1.6+"/>
<property name="sun.java2d.noddraw" value="true"/>
<jar href="http://192.168.0.39/jogl.all.jar" />
<jar href="http://192.168.0.39/newt.all.jar" />
<jar href="http://192.168.0.39/nativewindow.all.jar" />
<jar href="http://192.168.0.39/gluegen-rt.jar" />
<jar href="http://192.168.0.39/benchmark.jar" main="true"/>
<extension name="newt-all-awt" href="http://jogamp.org/deployment/webstart/newt-all-awt.jnlp" />
</resources>
我也尝试过这样加载applet,但没有改变......
<script src="http://www.java.com/js/deployJava.js"></script>
<script type="text/javascript">
var attributes = {
code:'de.beuthhochschule.bachelor.martin.Benchmark',
width:660, height:500
};
var parameters = {jnlp_href: "applet-benchmark.jnlp"};
var version = "1.6";
</script>
<script type="text/javascript">
deployJava.runApplet(attributes, parameters, version);
</script>
答案 0 :(得分:2)
快速检查一下,您在Eclipse中使用的JRE版本是否与浏览器中运行的JRE版本相同?
答案 1 :(得分:1)
我找到了原因:原因是图书馆的使用混乱了。我使用的库是由另一个项目给出的,它们似乎比当前版本旧。 这意味着applet下载的库使用另一个API,导致异常。
这是我的“解决方案”:
Java代码:
GLProfile glp = GLProfile.get(GLProfile.GL2ES2);
GLCapabilitiesImmutable caps = new GLCapabilities(glp);
glCanvas = new GLCanvas(caps);
在html中调用applet:
<script type="text/javascript">
var attributes = {
code:'de.beuthhochschule.bachelor.martin.Benchmark',
width:660, height:500
};
var parameters = {jnlp_href: "applet-benchmark.jnlp"};
var version = "1.6";
</script>
<script type="text/javascript">
deployJava.runApplet(attributes, parameters, version);
</script>
最后我的JNLP:
<?xml version="1.0" encoding="utf-8"?>
<jnlp href="applet-benchmark.jnlp">
<information>
<title>WebGL-Benchmark</title>
<vendor>Martin Breuer</vendor>
<homepage href="http://192.168.0.39/" />
<description>Native reference implementation</description>
<description kind="short">Reference implementation of the WebGL Benchmark</description>
<offline-allowed />
</information>
<resources>
<j2se href="http://java.sun.com/products/autodl/j2se" version="1.4+" />
<property name="sun.java2d.noddraw" value="true" />
<jar href="http://192.168.0.39/benchmark.jar" main="true" />
<extension name="newt-all-awt" href="http://jogamp.org/deployment/webstart/newt-all-awt.jnlp" />
</resources>
<applet-desc
name="WebGL-Benchmark"
main-class="de.beuthhochschule.bachelor.martin.Benchmark"
width="660"
height="500">
</applet-desc>
</jnlp>