Question

我试图在Eclipse中从https://bitbucket.org/madsen953/ethervisu创建一个可运行的JAR。当我尝试运行它时，我得到：

Exception in thread "Monitor" java.lang.UnsatisfiedLinkError: no jnetpcap in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1864)
    at java.lang.Runtime.loadLibrary0(Runtime.java:870)
    at java.lang.System.loadLibrary(System.java:1122)
    at org.jnetpcap.Pcap.<clinit>(Unknown Source)
    at ethervisu.monitors.JNetPcapMonitor.run(JNetPcapMonitor.java:28)
    at java.lang.Thread.run(Thread.java:745)
java.lang.NullPointerException
    at java.io.DataInputStream.readInt(DataInputStream.java:387)
    at processing.core.PFont.<init>(Unknown Source)
    at processing.core.PApplet.loadFont(Unknown Source)
    at jgv.graphics.JGVGraphics$GraphVisuApplet.setup(JGVGraphics.java:80)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:745)
Exception in thread "Animation Thread" java.lang.RuntimeException: Could not load font /data/ArialMT-48.vlw. Make sure that the font has been copied to the data folder of your sketch.
    at processing.core.PApplet.die(Unknown Source)
    at processing.core.PApplet.die(Unknown Source)
    at processing.core.PApplet.loadFont(Unknown Source)
    at jgv.graphics.JGVGraphics$GraphVisuApplet.setup(JGVGraphics.java:80)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:745)

我认为这是因为我在创建JAR时无法保留目录结构。字体文件位于根目录而不是data目录。我该如何解决这个问题？

Answer 1

尝试检查JDK集的路径是否正确指向buildpath中正确的java库。

并确保安装了正确的jdk版本。没有搞乱x86 / x64安装。

Answer 2

解决方法是将字体文件放在名为data的目录中，并与jar一起运行，并使用java -Djava.library.path=jnetpcap-1.3.0 -jar thejar.jar运行它，其中jnetpcap-1.3.0是jnetpcap及其关联的目录.so居住。

无法从Eclipse创建可运行的JAR

2 个答案: