java - 错误 : Could not find or load main class org. openjdk.jmh.runner.ForkedMain

Question

我正在通过 Spring Boot 应用程序使用 jmh 对一些方法进行基准测试。当我通过 IDE 运行它时，它给了我基准，但是当我用 maven 打包它并通过 CMD 运行它时，它给出了下面的堆栈跟踪。

# Run progress: 0.00% complete, ETA 00:11:00
# Fork: 1 of 1
Error: Could not find or load main class org.openjdk.jmh.runner.ForkedMain
<forked VM failed with exit code 1>
<stdout last='20 lines'>
</stdout>
<stderr last='20 lines'>
Error: Could not find or load main class org.openjdk.jmh.runner.ForkedMain
</stderr>

Benchmark had encountered error, and fail on error was requested
Exception in thread "main" java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
Caused by: org.openjdk.jmh.runner.RunnerException: Benchmark caught the exception
        at org.openjdk.jmh.runner.Runner.runBenchmarks(Runner.java:578)
        at org.openjdk.jmh.runner.Runner.internalRun(Runner.java:320)
        at org.openjdk.jmh.runner.Runner.run(Runner.java:209)
        at com.test.statistics.metrics.DruidBenchmarkApplication.main(DruidBenchmarkApplication.java:56)
        ... 8 more
Caused by: org.openjdk.jmh.runner.BenchmarkException: Benchmark error
        at org.openjdk.jmh.runner.Runner.doFork(Runner.java:771)
        at org.openjdk.jmh.runner.Runner.runSeparate(Runner.java:663)
        at org.openjdk.jmh.runner.Runner.runBenchmarks(Runner.java:561)
        ... 11 more
        Suppressed: java.lang.IllegalStateException: Forked VM failed with exit code 1
                ... 14 more




**POM.XML:**

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.test.stats</groupId>
    <artifactId>druid-metrics</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>druid-metrics</name>
    <description>Demo project for benchmarking druid</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <docker.image.prefix>druid-metrics</docker.image.prefix>
        <jmh.version>1.21</jmh.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.directory.studio</groupId>
            <artifactId>org.apache.commons.io</artifactId>
            <version>2.4</version>
        </dependency>

        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20080701</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/commons-lang/commons-lang -->
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.openjdk.jmh</groupId>
            <artifactId>jmh-core</artifactId>
            <version>${jmh.version}</version>
        </dependency>
        <dependency>
            <groupId>org.openjdk.jmh</groupId>
            <artifactId>jmh-generator-annprocess</artifactId>
            <version>${jmh.version}</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>

            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>dockerfile-maven-plugin</artifactId>
                <version>1.3.4</version>
                <configuration>
                    <repository>${docker.image.prefix}/${project.artifactId}</repository>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

我已经尝试通过来自一堆论坛的信息明确设置类路径，但这并没有帮助通过 cmd 运行应用程序。任何帮助，将不胜感激。

谢谢!

Answer 1

有同样的 ClassNotFoundException Gradle + JMH 这是一个 incompatibility bug已在最近的版本 ( jmh-gradle-plugin >= 0.5.0 ) 中修复。尽管这个建议很无聊:尝试升级(或降级)并查看它是否仍然存在。