Question

我想将target/classes目录添加到maven的exec:java类路径中。编译和运行时依赖性处理得很好，但是从src/*/resources复制的资源在执行期间不可用。我几乎可以肯定这是因为插件的类路径只包含项目依赖项，而不包括target/classes目录。我希望能够在开发过程中以mvn clean compile exec:java的形式运行应用程序同时将所有属性文件和其他文件保留在资源目录中。

我尝试了几种exec配置，但我似乎无法做到正确：

我的pom.xml：

<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>exec-maven-plugin</artifactId>
  <version>1.2.1</version>
  <configuration>
    <executable>java</executable>
    <mainClass>Example</mainClass>
    <arguments>
        <argument>-cp</argument>
        <classpath/>
        <argument>%classpath:target/classes</argument>

        <argument>someFile.txt</argument>
    </arguments>
  </configuration>
</plugin>

我不认为这个是正确的语法，因为我得到一个ArrayStoreException：

java.lang.ArrayStoreException
at java.lang.System.arraycopy(Native Method)
at java.util.Arrays.copyOf(Arrays.java:2763)
at java.util.ArrayList.toArray(ArrayList.java:305)
at org.codehaus.plexus.component.configurator.converters.composite.ArrayConverter.fromConfiguration(ArrayConverter.java:141)
at org.codehaus.plexus.component.configurator.converters.ComponentValueSetter.configure(ComponentValueSetter.java:247)
at org.codehaus.plexus.component.configurator.converters.composite.ObjectWithFieldsConverter.processConfiguration(ObjectWithFieldsConverter.java:137)
at org.codehaus.plexus.component.configurator.BasicComponentConfigurator.configureComponent(BasicComponentConfigurator.java:56)
at org.apache.maven.plugin.DefaultPluginManager.populatePluginFields(DefaultPluginManager.java:1357)
at org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(DefaultPluginManager.java:724)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:468)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:569)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:539)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.jav

我使用了来自here和here的示例配置poms。

Answer 1

默认情况下，当您使用target/classes插件时，classpath和所有依赖项都在exec-maven-plugin。

我有类似的设置，以下配置适合我。在我的Test课程中，我将一个xml文件读作Thread.currentThread().getContextClassLoader().getResourceAsStream("mapping.xml")。我已将文件保留在src/main/resources中，后面的版本在target/classes下可用。

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>exec-maven-plugin</artifactId>
    <version>1.2.1</version>
    <executions>
        <execution>
            <goals>
                <goal>exec</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
        <executable>java</executable>
        <mainClass>com.Test</mainClass>
    </configuration>
</plugin>

将maven的输出目录添加到exec：java classpath

1 个答案: