JNLP小程序未满足链接错误

Question

我正在尝试使用JNLP构建一个小程序。我编写了一个Ant脚本来编译java类、构建jar文件并对它们进行签名。我使用与Ant构建的相同的密钥库对所有jar进行了签名。我在Java控制面板中授予了显示自签名小程序的权限。如果我直接运行JNLP文件，一切都很好，但是如果我将此小程序放在网页中，我会得到不满意的LinkError。

这是我得到的错误：

java.lang.reflect.InvocationTargetException
    at java.awt.EventQueue.invokeAndWait(Unknown Source)
    at java.awt.EventQueue.invokeAndWait(Unknown Source)
    at javax.swing.SwingUtilities.invokeAndWait(Unknown Source)
    at polygon.Example.init(Unknown Source)
    at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.init(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.UnsatisfiedLinkError: no gluegen-rt in java.library.path
    at java.lang.ClassLoader.loadLibrary(Unknown Source)
    at java.lang.Runtime.loadLibrary0(Unknown Source)
    at java.lang.System.loadLibrary(Unknown Source)
    at com.jogamp.common.jvm.JNILibLoaderBase.loadLibraryInternal(JNILibLoaderBase.java:454)
    at com.jogamp.common.jvm.JNILibLoaderBase.access$000(JNILibLoaderBase.java:59)
    at com.jogamp.common.jvm.JNILibLoaderBase$DefaultAction.loadLibrary(JNILibLoaderBase.java:90)
    at com.jogamp.common.jvm.JNILibLoaderBase.loadLibrary(JNILibLoaderBase.java:328)
    at com.jogamp.common.os.DynamicLibraryBundle$GlueJNILibLoader.loadLibrary(DynamicLibraryBundle.java:390)
    at com.jogamp.common.os.Platform$2.run(Platform.java:249)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.jogamp.common.os.Platform.loadGlueGenRTImpl(Platform.java:231)
    at com.jogamp.common.os.Platform.<clinit>(Platform.java:183)
    at javax.media.opengl.GLProfile.<clinit>(GLProfile.java:99)
    ...

我根据操作系统构建的每个jar文件都包含gluegen-rt.dll但无法加载。我本地库的Jar文件由DLL文件组成。它看起来像：

• win64。罐子
  • gluegen-rt.dll
  • jogl\U cl.dll

  我的文件夹层次结构如下所示：

  • 网络内容

  这是我的Ant脚本：

  <project name="Project" default="signJar">
  <path id="libraries.path">
      <fileset dir="${lib.dir}" includes="**/*.jar"/>
  </path>
  
  <path id="maps.path">
      <fileset dir="${maps.dir}"/>
  </path>
  
  <target name="clean">
      <delete dir="${classes.dir}" />
      <delete dir="${jar.dir}" />
      <delete dir="${build.dir}" />
  </target>
  
  <target name="init" depends="clean">
      <mkdir dir="${build.dir}" />
      <mkdir dir="${classes.dir}" />
      <mkdir dir="${dist.dir}" />
  </target>
  
  <target name="compile" depends="init">
      <javac srcdir="${src.dir}" destdir="${classes.dir}" includeantruntime="true" verbose="true" classpathref="libraries.path" encoding="ISO-8859-9" />
  </target>
  
  <target name="dist" depends="compile">
  
      <pathconvert property="mf.classpath" pathsep=" ">
          <path refid="libraries.path" />
          <flattenmapper />
      </pathconvert>
  
      <tstamp/><!-- needed for TODAY -->
      <manifest file="MANIFEST.MF">
          <attribute name="Built-By" value="${manifest.built.by}"/>
          <attribute name="Created-By" value="${manifest.created.by}"/>
          <attribute name="Main-Class" value="polygon.MainApplet"/>
          <attribute name="Implementation-Version" value="${version.number}-b${build.number}"/>   
          <attribute name="Built-Date" value="${TODAY}" />
          <attribute name="Class-Path" value="${maps.dir} ${mf.classpath}" />
          <attribute name="Permissions" value="all-permissions" />
          <attribute name="Codebase" value="*" />
          <attribute name="Application-Name" value="Applet Application in Manifest" />
          <attribute name="Trusted-Only" value="true" />
      </manifest>
  
      <jar jarfile="${dist.dir}/applet.jar" basedir="${classes.dir}" manifest="MANIFEST.MF" />
  
      <jar jarfile="${dist.dir}/${native.libraries.dir}/linux.jar" basedir="${native.libraries.dir}/linux" />
      <jar jarfile="${dist.dir}/${native.libraries.dir}/linux64.jar" basedir="${native.libraries.dir}/linux64" />
      <jar jarfile="${dist.dir}/${native.libraries.dir}/macos_64.jar" basedir="${native.libraries.dir}/macos_64" />
      <jar jarfile="${dist.dir}/${native.libraries.dir}/macos_ppc.jar" basedir="${native.libraries.dir}/macos_ppc" />
      <jar jarfile="${dist.dir}/${native.libraries.dir}/macos_x86.jar" basedir="${native.libraries.dir}/macos_x86" />
      <jar jarfile="${dist.dir}/${native.libraries.dir}/solaris_amd64.jar" basedir="${native.libraries.dir}/solaris_amd64" />
      <jar jarfile="${dist.dir}/${native.libraries.dir}/solaris_i586.jar" basedir="${native.libraries.dir}/solaris_i586" />
      <jar jarfile="${dist.dir}/${native.libraries.dir}/solaris_sparc.jar" basedir="${native.libraries.dir}/solaris_sparc" />
      <jar jarfile="${dist.dir}/${native.libraries.dir}/solaris_sparc64.jar" basedir="${native.libraries.dir}/solaris_sparc64" />
      <jar jarfile="${dist.dir}/${native.libraries.dir}/win32.jar" basedir="${native.libraries.dir}/win32" />
      <jar jarfile="${dist.dir}/${native.libraries.dir}/win64.jar" basedir="${native.libraries.dir}/win64" />
  
      <jar jarfile="${dist.dir}/maps.jar" basedir="${lib.dir}/maps" />
  
      <copy todir="${dist.dir}">
          <fileset dir="${lib.dir}">
              <include name="*.jar"/>
          </fileset>
      </copy>
  
  </target>
  
  <target name="signJar" depends="dist">
      <delete dir="${dist.dir}/.keystore" />
  
      <genkey alias="keystorealias" verbose="true" storepass="storepass" 
              keypass="keypass"
              validity="365"
              keystore="${dist.dir}/.keystore">
              <dname>
                  <param name="CN" value="CN"/>
                  <param name="OU" value="OU"/>
                  <param name="O"  value="O"/>
                  <param name="C"  value="TR"/>
              </dname>
          </genkey>
  
          <signjar
              alias="keystorealias" keystore="${dist.dir}/.keystore"
              storepass="storepass"
              keypass="keypass">
            <path>
              <fileset dir="${dist.dir}" includes="**/*.jar" />
            </path>
          </signjar>
      </target>
  </project>
  

  我没有写我的属性。我需要一些本机库来运行应用程序，正如您在Ant脚本中看到的那样，我根据操作系统将它们放入jar中。我还需要lib文件夹中的一些其他jar文件，但我将它们放入Manifest文件中。我没有将它们写在JNLP文件中。

  这是我的JNLP：

  <?xml version="1.0" encoding="UTF-8"?>
  
  <jnlp spec="1.0+">
      <information>
          <title>Demo</title>
          <vendor>Team</vendor>
          <offline-allowed />
      </information>
      <security>
          <all-permissions/>
      </security>
      <resources>
          <j2se version="1.7+" initial-heap-size="256M" max-heap-size="512M" />
  
          <jar href="applet/applet.jar" main="true" />
          <jar href="applet/maps.jar" />
      </resources>
  
      <resources os="Linux" arch="x86">
          <nativelib href="applet/lib/native/linux_x86.jar" />
      </resources>
  
      <resources os="Linux" arch="amd64">
          <nativelib href="applet/lib/native/linux_x64.jar" />
      </resources>
  
      <resources os="Windows" arch="x86">
          <nativelib href="applet/lib/native/win32.jar" />
      </resources>
  
      <resources os="Windows" arch="amd64">
          <nativelib href="applet/lib/native/win64.jar" />
      </resources>
  
      <applet-desc name="Applet Application in Applet" main-class="polygon.Example" width="800" height="600" />
      <update check="background" policy="prompt-update" />
  </jnlp>sources>
  
      <resources os="Linux" arch="x86">
          <nativelib href="applet/lib/native/linux_x86.jar" />
      </resources>
  
      <resources os="Linux" arch="amd64">
          <nativelib href="applet/lib/native/linux_x64.jar" />
      </resources>
  
      <resources os="Windows" arch="x86">
          <nativelib href="applet/lib/native/win32.jar" />
      </resources>
  
      <resources os="Windows" arch="amd64">
          <nativelib href="applet/lib/native/win64.jar" />
      </resources>
  
      <applet-desc name="Applet Application" main-class="polygon.Example" width="800" height="600" />
      <update check="background" policy="prompt-update" />
  </jnlp>
  

  这里还有我在网页中添加小程序的超文本标记语言代码：

  <applet width="800" height="500" codebase="applet" code="polygon.Example" archive="applet.jar">
  <param name="jnlp_ref" value="applet.jnlp" />
  </applet>
  

  我尝试使用File类在我的小程序中访问gluegen-rt.dll，我可以访问它。为什么我的小程序可以加载本地库，如果我直接运行JNLP，为什么如果我把它放在网页中，它不能加载它们？

  请注意，我不想将上面提到的库添加到我的计算机的classpath中，因为如果其他用户不添加，则无法运行它。因此，不可能在所有用户的计算机中将其添加到类路径中。这对我的情况来说不是一个好的解决方案。

Answer 1

我发现这是因为小程序必须用不同的标记而不是小程序标记来添加。在我的情况下，我应该将applet标记更改为以下行以添加applet。

<script src="http://www.java.com/js/deployJava.js"></script>
<script>
    var attributes = {code: 'polygon.Example', width: 800, height: 600};
    var params = {jnlp_href: 'applet.jnlp'};
    deployJava.runApplet( attributes, params, '1.7' );
</script>