exec-maven-plugin 目标在构建期间未启动

Question

你好，

我尝试在 Maven 构建过程中运行一个 main 方法。因此，我将 exec-maven-plugin 和以下代码片段添加到我的 pom.xml 中。

<plugin>
     <!-- http://www.vineetmanohar.com/2009/11/3-ways-to-run-java-main-from-maven/ -->
     <groupId>org.codehaus.mojo</groupId>
     <artifactId>exec-maven-plugin</artifactId>
     <version>1.1.1</version>
     <executions>
      <execution>
       <id>compile-reports</id>
       <phase>compile</phase>
       <goals>
        <goal>java</goal>
       </goals>
       <configuration>
        <mainClass>at.xyz.dls.util.JasperReportCompiler</mainClass>
       </configuration>
      </execution>
     </executions>
    </plugin>

当我从命令行调用它时，主类存在并且也被执行：

mvn exec:java -Dexec.mainClass="at.xyz.dls.util.JasperReportCompiler"

我还尝试创建一个空的新项目来测试，如果 pom 中的其他依赖项导致问题，但没有成功。在 ~/.m2 文件夹中的 maven settings.xml 中，只有镜像条目，但没有配置文件或其他任何内容，这可能会导致问题。

它只是不启动它。当我删除 org.codehouse 下的存储库中的所有工件时，它没有下载 exec-maven-plugin。仅当我进行命令行调用时。

有什么提示吗？提前致谢！

编辑：我忘了提及我已经使用了“mvn clean install”。所以它应该已经通过了编译阶段...

编辑：

到目前为止，我无法解决问题。感谢您迄今为止的回答！我会尝试再次提供所有信息，希望你们中的一个人能找到可疑的部分。我不知道了......

我做了什么：

• 删除我的maven代理中的文件夹org/codehouse/mojo。只是为了显示何时加载依赖项。
• 显示一些 java 和 maven 版本信息
• 使用以下命令构建项目： mvn -clean install （应该通过测试阶段来执行我的 main 方法）
• 执行 main 方法来显示，exec-maven-plugin 仅在之后加载并

起作用据我了解，调用“mvn clean install”应该通过测试阶段（测试被执行...），因此应该调用 exec-maven-plugin，它应该执行 main 方法。我说得对吗？

D:\Eclipse-3.6.1-JSF\ws\exec-test>java -version java version "1.6.0_21" Java(TM) SE Runtime Environment (build 1.6.0_21-b07) Java HotSpot(TM) Client VM (build 17.0-b17, mixed mode, sharing)

D:\Eclipse-3.6.1-JSF\ws\exec-test>mvn -version Apache Maven 2.2.1 (r801777; 2009-08-06 21:16:01+0200) Java version: 1.6.0_21 Java home: C:\Programme\Java\jdk1.6.0_21\jre Default locale: de_AT, platform encoding: Cp1252 OS name: "windows xp" version: "5.1" arch: "x86" Family: "windows" D:\Eclipse-3.6.1-JSF\ws\exec-test>mvn clean install 
[INFO] Scanning for projects... 
[INFO] ------------------------------------------------------------------------ 
[INFO] Building Unnamed - at.test:exec-test:jar:0.0.1-SNAPSHOT 
[INFO] task-segment: [clean, install] 
[INFO] ------------------------------------------------------------------------ 
[INFO] [clean:clean {execution: default-clean}] 
[INFO] Deleting directory D:\Eclipse-3.6.1-JSF\ws\exec-test\target 
[INFO] [resources:resources {execution: default-resources}] 
[INFO] Using 'UTF-8' encoding to copy filtered resources. 
[INFO] Copying 0 resource 
[INFO] [compiler:compile {execution: default-compile}] 
[INFO] Compiling 1 source file to D:\Eclipse-3.6.1-JSF\ws\exec-test\target\classes 
[INFO] [resources:testResources {execution: default-testResources}] 
[INFO] Using 'UTF-8' encoding to copy filtered resources. 
[INFO] Copying 0 resource 
[INFO] [compiler:testCompile {execution: default-testCompile}] 
[INFO] Compiling 1 source file to D:\Eclipse-3.6.1-JSF\ws\exec-test\target\test-classes 
[INFO] [surefire:test {execution: default-test}] 
[INFO] Surefire report directory: D:\Eclipse-3.6.1-JSF\ws\exec-test\target\surefire-reports

T E S T S

Running at.test.ExecTestTest JUnit Test call: end of junit test.


Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.031 sec

Results :

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0


[INFO] [jar:jar {execution: default-jar}] 
[INFO] Building jar: D:\Eclipse-3.6.1-JSF\ws\exec-test\target\exec-test.jar 
[INFO] [install:install {execution: default-install}] 
[INFO] Installing D:\Eclipse-3.6.1-JSF\ws\exec-test\target\exec-test.jar to D:\maven.m2\repository\at\test\exec-test\0.0.1-SNAPSHOT\exec-test-0.0.1-SNAPSHOT.jar 
[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD SUCCESSFUL 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 3 seconds 
[INFO] Finished at: Thu Mar 10 12:07:08 CET 2011 
[INFO] Final Memory: 15M/37M 
[INFO] ------------------------------------------------------------------------ D:\Eclipse-3.6.1-JSF\ws\exec-test>mvn exec:java -Dexec.mainClass="at.test.ExecTest" 
[INFO] Scanning for projects... 
[INFO] Searching repository for plugin with prefix: 'exec'. Downloading: http://pced06.vab.sozvers.at:8080/artifactory/repo/org/codehaus/mojo/exec-maven-plugin/1.2/exec-maven-plugin-1.2.pom 6K downloaded (exec-maven-plugin-1.2.pom) Downloading: http://pced06.vab.sozvers.at:8080/artifactory/repo/org/codehaus/mojo/exec-maven-plugin/1.2/exec-maven-plugin-1.2.jar 35K downloaded (exec-maven-plugin-1.2.jar) 
[INFO] ------------------------------------------------------------------------ 
[INFO] Building Unnamed - at.test:exec-test:jar:0.0.1-SNAPSHOT 
[INFO] task-segment: [exec:java] 
[INFO] ------------------------------------------------------------------------ 
[INFO] Preparing exec:java [WARNING] Removing: java from forked lifecycle, to prevent recursive invocation. 
[INFO] No goals needed for project - skipping 
[INFO] [exec:java {execution: default-cli}]


[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD SUCCESSFUL 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 7 seconds 
[INFO] Finished at: Thu Mar 10 12:07:20 CET 2011 
[INFO] Final Memory: 5M/15M 
[INFO] ------------------------------------------------------------------------        

D:\Eclipse-3.6.1-JSF\ws\exec-test>

现在再次修改 pom.xml：

<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>at.test</groupId>
  <artifactId>exec-test</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <build>
    <finalName>exec-test</finalName>
    <defaultGoal>install</defaultGoal>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <configuration>
            <source>1.6</source>
            <target>1.6</target>
            <encoding>UTF-8</encoding>
          </configuration>
        </plugin>
        <plugin>
<!-- http://www.vineetmanohar.com/2009/11/3-ways-to-run-java-main-from-maven/ -->
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2</version>
<executions>
  <execution>
    <id>compile-reports</id>
    <phase>test</phase>
    <goals>
      <goal>java</goal>
    </goals>
    <configuration>
      <mainClass>at.test.ExecTest</mainClass>
    </configuration>
  </execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
<dependencies>
  <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.8.2</version>
  </dependency>
</dependencies>

主类：

package at.test;

public class ExecTest {
  /**
   * @param args
   */
  public static void main(String[] args) {
    System.out.println("##################################");
  }
}

和 JUnit 测试类：

package at.test;
import org.junit.Test;
import at.test.ExecTest;

public class ExecTestTest {

  @Test
    public void testTestTest() {
      System.err.println("JUnit Test call:");
      ExecTest.main(null);
      System.err.println("end of junit test.");
    }
}

Answer 1

最后我发现了问题。这是一个相当愚蠢的错误：

在 pom.xml 中，我在 节点周围使用了 。

Maven 没有抱怨，而是忽略了所有插件配置。
也许有人可以使用此信息...

感谢您的帮助！

Answer 2

编译阶段可能不合适，你尝试过吗

 <phase>test</phase>

Answer 3

如果你将它设置为阶段编译，那么你必须告诉maven在运行时需要运行编译。您的 Maven 命令不会通过任何阶段。您应该有 mvncompile exec:java ... 或更高版本（测试、安装...）。

这是我对 exec maven 插件的用法（带有 mvn clean 包）：

            <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>exec-maven-plugin</artifactId>
            <version>1.2</version>
            <executions>
                <execution>
                    <phase>test</phase>
                    <goals>
                        <goal>java</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <mainClass>com.xxx.LanguageGenerator</mainClass>
                <arguments>
                    <argument>${project.build.outputDirectory}/build/PMLanguage.xls</argument>
                    <argument>PM${project.version}</argument>
                    <argument>${project.build.outputDirectory}/com/laco/projectmaster/props/resources</argument>
                    <argument>Created during maven build (POM Version:
                        ${project.version})</argument>
                </arguments>
            </configuration>
        </plugin>