oshi-core 中 SystemInfo class 的 NoClassDefFoundError
NoClassDefFoundError for SystemInfo class in oshi-core
我使用 Maven 将 oshi-core
作为依赖包含在我的项目中:
依赖结构
<dependencies>
<dependency>
<groupId>com.github.oshi</groupId>
<artifactId>oshi-core</artifactId>
<version>5.2.5</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>score-worker-monitor-api</artifactId>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
</dependency>
</dependencies>
但是,我看到了这个错误:
2020-10-08 11:15:49,688 [scoreWorkerScheduler-5] (TaskUtils.java:95) ERROR - Unexpected error occurred in scheduled task.
java.lang.NoClassDefFoundError: oshi/SystemInfo
at io.cloudslang.worker.monitor.CpuPerProcess.measure(CpuPerProcess.java:34)
at io.cloudslang.worker.monitor.PerfMetricCollectorImpl.collectMetric(PerfMetricCollectorImpl.java:53)
at io.cloudslang.worker.monitor.service.WorkerMetricCollectorServiceImpl.collectPerfMetrics(WorkerMetricCollectorServiceImpl.java:42)
at sun.reflect.GeneratedMethodAccessor37.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access1(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
我不明白 OSHI-GitHub 的下面一行。我的意思是在 oshi-core 中有依赖项,那我为什么要再次添加 jna 依赖项?
If you are using a parent (e.g. Spring Boot) that includes JNA as a dependency, override the jna.version property or equivalent
我在 oshi-core 依赖项中使用最新的 jna 和 jna-platform 版本。
OSHI 网站上关于 JNA NoClassDefFoundError
的文档与本案例无关,因为未找到 OSHI 本身。问题出在包含堆栈跟踪第一行的包中:
at io.cloudslang.worker.monitor.CpuPerProcess.measure(CpuPerProcess.java:34)
从这个包名称看来您正在使用 CloudSlang score,但是 GitHub 上的最新版本不包括 class CpuPerProcess
。您可能正在使用该存储库的分叉版本。
在这种情况下,您需要确保 oshi-core
依赖项包含在您的 CloudSlang 分叉版本的 pom.xml
中。
虽然它与您看到的错误并不特别相关,但要回答您关于 JNA 版本的问题是 JNA 工件作为传递依赖项包含在 OSHI 中。如果您使用 Spring 起始父级(而不仅仅是另一个依赖项),那么 JNA 的 Spring 版本优先并且您必须在 pom.xml
中定义它以确保 Spring包括正确的版本:
<properties>
<jna.version>5.6.0</jna.version>
</properties>
我使用 Maven 将 oshi-core
作为依赖包含在我的项目中:
依赖结构
<dependencies>
<dependency>
<groupId>com.github.oshi</groupId>
<artifactId>oshi-core</artifactId>
<version>5.2.5</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>score-worker-monitor-api</artifactId>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
</dependency>
</dependencies>
但是,我看到了这个错误:
2020-10-08 11:15:49,688 [scoreWorkerScheduler-5] (TaskUtils.java:95) ERROR - Unexpected error occurred in scheduled task.
java.lang.NoClassDefFoundError: oshi/SystemInfo
at io.cloudslang.worker.monitor.CpuPerProcess.measure(CpuPerProcess.java:34)
at io.cloudslang.worker.monitor.PerfMetricCollectorImpl.collectMetric(PerfMetricCollectorImpl.java:53)
at io.cloudslang.worker.monitor.service.WorkerMetricCollectorServiceImpl.collectPerfMetrics(WorkerMetricCollectorServiceImpl.java:42)
at sun.reflect.GeneratedMethodAccessor37.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access1(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
我不明白 OSHI-GitHub 的下面一行。我的意思是在 oshi-core 中有依赖项,那我为什么要再次添加 jna 依赖项?
If you are using a parent (e.g. Spring Boot) that includes JNA as a dependency, override the jna.version property or equivalent
我在 oshi-core 依赖项中使用最新的 jna 和 jna-platform 版本。
OSHI 网站上关于 JNA NoClassDefFoundError
的文档与本案例无关,因为未找到 OSHI 本身。问题出在包含堆栈跟踪第一行的包中:
at io.cloudslang.worker.monitor.CpuPerProcess.measure(CpuPerProcess.java:34)
从这个包名称看来您正在使用 CloudSlang score,但是 GitHub 上的最新版本不包括 class CpuPerProcess
。您可能正在使用该存储库的分叉版本。
在这种情况下,您需要确保 oshi-core
依赖项包含在您的 CloudSlang 分叉版本的 pom.xml
中。
虽然它与您看到的错误并不特别相关,但要回答您关于 JNA 版本的问题是 JNA 工件作为传递依赖项包含在 OSHI 中。如果您使用 Spring 起始父级(而不仅仅是另一个依赖项),那么 JNA 的 Spring 版本优先并且您必须在 pom.xml
中定义它以确保 Spring包括正确的版本:
<properties>
<jna.version>5.6.0</jna.version>
</properties>