JMH 没有主要清单属性

JMH no main manifest attribute

我刚刚使用此命令创建了一个 Maven 项目:

$ mvn archetype:generate \
      -DinteractiveMode=false \
      -DarchetypeGroupId=org.openjdk.jmh \
      -DarchetypeArtifactId=jmh-java-benchmark-archetype \
      -DgroupId=org.sample \
      -DartifactId=test \
      -Dversion=1.0

然后我做 mvn clean install 然后 java -jar test-1.0.jar

程序给我这个消息

no main manifest attribute, in target/test-1.0.jar 

我查看了清单,没有 Main-Class 属性。

这应该是生成的:

<plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>2.2</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                    <configuration>
                        <finalName>${uberjar.name}</finalName>
                        <transformers>
                            <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                <mainClass>org.openjdk.jmh.Main</mainClass>
                            </transformer>
                        </transformers>
                        <filters>
                            <filter>
                                <!--
                                    Shading signed JARs will fail without this.
                                    
                                -->
                                <artifact>*:*</artifact>
                                <excludes>
                                    <exclude>META-INF/*.SF</exclude>
                                    <exclude>META-INF/*.DSA</exclude>
                                    <exclude>META-INF/*.RSA</exclude>
                                </excludes>
                            </filter>
                        </filters>
                    </configuration>
                </execution>
            </executions>
        </plugin>

JMH Maven 构建的最终输出是 benchmarks.jar("uberjar")而您的 JAR 运行 只是一个中间结果。所以使用

java -jar target/benchmarks.jar