JMH 无法找到资源：/META-INF/BenchmarkList

eclipse java maven jmh

2022-08-31 22:34:37

我无法在 eclipse 中运行简单的 JMH 基准测试。Maven dependencies：

        <dependency>
            <groupId>org.openjdk.jmh</groupId>
            <artifactId>jmh-core</artifactId>
            <version>1.12</version>
        </dependency>
        <dependency>
            <groupId>org.openjdk.jmh</groupId>
            <artifactId>jmh-generator-annprocess</artifactId>
            <version>1.12</version>
        </dependency>

Java 代码：

public class BTest {
    @Benchmark
    public void test() {
        // todo
    }

    public static void main(String[] args) throws RunnerException {
        Options opt = new OptionsBuilder()
                 .include(BTest.class.getSimpleName())
                  .build();

        new Runner(opt).run();
    }
}

运行结果：

线程“main” java.lang.RuntimeException 中的异常：错误：无法找到资源： /META-INF/BenchmarkList at org.openjdk.jmh.runner.AbstractResourceReader.getReaders（AbstractResourceReader.java：96） at org.openjdk.jmh.runner.BenchmarkList.find（BenchmarkList.java：104） at org.openjdk.jmh.runner.internalRun（Runner.java：256） at org.openjdk.jmh.runner.run（Runner.java：206） at com.test.BTest.main（BTest.java：24）

也许问题是，我正在从日食运行它。

答案 1

终于发现了。缺少插件有问题exec-maven-plugin

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>exec-maven-plugin</artifactId>
    <executions>
        <execution>
            <id>run-benchmarks</id>
            <phase>integration-test</phase>
            <goals>
                <goal>exec</goal>
            </goals>
            <configuration>
                <classpathScope>test</classpathScope>
                <executable>java</executable>
                <arguments>
                    <argument>-classpath</argument>
                    <classpath />
                    <argument>org.openjdk.jmh.Main</argument>
                    <argument>.*</argument>
                </arguments>
            </configuration>
        </execution>
    </executions>
</plugin>

答案 2

pom.xml必须具有以下依赖关系和配置到 Java 微基准工具（JMH）框架

<properties>
    <jmh.version>1.21</jmh.version>
</properties>
<dependencies>
<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>
</dependency>
<dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
  <version>4.11</version>
  <scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>java-jmh</finalName>
<plugins>
    <plugin>    
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
            <source>1.8</source>
            <target>1.8</target>
            <annotationProcessorPaths>
                <path>
                    <groupId>org.openjdk.jmh</groupId>
                    <artifactId>jmh-generator-annprocess</artifactId>
                    <version>${jmh.version}</version>
                </path>
            </annotationProcessorPaths>
        </configuration>
    </plugin>
    <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>exec-maven-plugin</artifactId>
        <executions>
            <execution>
                <id>run-benchmarks</id>
                <phase>integration-test</phase>
                <goals>
                    <goal>exec</goal>
                </goals>
                <configuration>
                    <classpathScope>test</classpathScope>
                    <executable>java</executable>
                    <arguments>
                        <argument>-classpath</argument>
                        <classpath />
                        <argument>org.openjdk.jmh.Main</argument>
                        <argument>.*</argument>
                    </arguments>
                </configuration>
            </execution>
        </executions>
    </plugin>
</plugins>

之后，转到命令行并运行命令$mvn全新安装