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分享请教：项目在eclipse上可以运行，打包成jar这个报错！java.lang.NoClassDefFoundError,一个javaFX桌面项目。
问题
首先：和 freemarker/template/TemplateNotFoundException关系应该不大，因为把 1180行注释掉，1378行也会报错。
1378行报错
Exception in thread "JavaFX Application Thread" java.lang.NoClassDefFoundError: org/apache/poi/ss/usermodel/Workbook
at com.eye_1.java.Index$17.handle(Index.java:1378)
at com.eye_1.java.Index$17.handle(Index.java:1)1180行报错
Exception in thread "JavaFX Application Thread" java.lang.NoClassDefFoundError: freemarker/template/TemplateNotFoundException
at com.eye_1.java.Index$17.handle(Index.java:1180)
at com.eye_1.java.Index$17.handle(Index.java:1)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8411)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:394)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(GlassViewEventHandler.java:432)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:410)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:431)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$3(WinApplication.java:177)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: freemarker.template.TemplateNotFoundException
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 49 more
...全文
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八爻老骥 2020-08-07
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你打包后的目录结构是什么样的？同目录下有没有包含freemarker.jar这个包？或是java参数里有没有指定Freemarker的路径？
红楼终究一场梦 2020-08-07
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感谢楼上二位的指点，确实是jar包问题。方向比努力重要，知道了错误方向，然后搜了一下，找打了一篇文章，解决了问题。
https://blog.csdn.net/erhei0317/article/details/64935642
将Java工程打成jar包，但第三方jar包并没有包含在包中，当在命令行中运行jar包时，出现类找不到的异常，
解决办法1：
将第三方jar包放到JRE的扩展类文件夹中（%JAVA_HOME%/jre/lib/ext），
解决方法2:
修改jar包的MANIFEST.MF文件
详细如下：
通过不断地试验，终于成功了！
1、新建文件夹test位于D盘；
2、将用到的所有第三方jar包放在文件夹lib下，再将lib放在test下；
3、导出的java工程jar包a.jar也放在test下；
4、修改工程jar包META-INF文件夹下的MANIFEST.MF配置文件：
Manifest-Version: 1.0
Main-Class: cn.golaxy.yqpt.client.main.GatherMain
Class-Path: lib/soapmonitor-1.5.jar
lib/spring-aop.jar
qybao 2020-08-07
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也就是说依赖包没有打包，那就是classpath的问题
你试试用-cp参数指定路径启动试试
java -cp 你的lib路径 -jar name.jar
红楼终究一场梦 2020-08-07
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在cmd里通过 java -jar name.jar 运行的。
我也感觉是程序找不到依赖包，这个要怎么打包，我用的是eclipse的自带打包工具。
红楼终究一场梦 2020-08-07
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你好目录是这样的，java参数里有没有指定Freemarker的路径？这个指的是怎么指定，我用的是eclipse自带的打包工具。
qybao 2020-08-07
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打包jar后怎么运行的？如果需要的依赖包没有一起打包进jar，那你的classpath环境变量要指定依赖包所在的路径才可以
