为什么在尝试保存测试计划时会出现 NoClassDefFound 错误?

Why do I get a NoClassDefFound error when I try to save my test plan?

我安装了 apache-jmeter-5.1.1 和 java 1.8.0_221 (8),并通过 getting started guide 在 GUI 中构建 Web 测试计划.但是当我单击保存以保存测试计划时,我收到以下错误:

Uncaught Exception java.lang.NoClassDefFoundError: Could not initialize class org.apache.jmeter.gui.util.FileDialoger. See log file for details.

调试器中的完整输出:

2019-07-24 15:30:13,306 ERROR o.a.j.JMeter: Uncaught exception: 
java.lang.NoClassDefFoundError: Could not initialize class org.apache.jmeter.gui.util.FileDialoger
    at org.apache.jmeter.gui.action.Save.computeFileName(Save.java:203) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
    at org.apache.jmeter.gui.action.Save.doAction(Save.java:165) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
    at org.apache.jmeter.gui.action.ActionRouter.performAction(ActionRouter.java:88) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
    at org.apache.jmeter.gui.action.ActionRouter.lambda$actionPerformed[=10=](ActionRouter.java:70) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
    at java.awt.event.InvocationEvent.dispatch(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.access0(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.run(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.run(Unknown Source) ~[?:1.8.0_221]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_221]
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.dispatchEvent(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.run(Unknown Source) [?:1.8.0_221]

知道如何解决吗?

尝试以下操作:

  1. 打开 JMeter -> 选项 -> 外观 -> Select 任何其他主题 除了达库拉。
  2. 重启JMeter,创建测试计划并尝试 救球。
  3. 保存应该有效。