喂，
我尝试在maven构建过程中运行main方法。因此，我将exec-maven-plugin和以下代码段添加到我的pom.xml
<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进行测试，如果pom中的其他依赖性导致问题，但没有成功。在〜/ .m2文件夹的maven settings.xml中，只有镜像条目，但没有可能导致问题的配置文件或其他任何内容。
它只是没有启动它。当我在org.codehouse下删除我的repo中的所有工件时，它没有下载exec-maven-plugin。只有在我进行命令行调用时才会。
任何提示？提前谢谢！
编辑：我忘了提到我用过“mvn clean install”。所以它应该已经通过了编译阶段......
编辑：
我做了什么：
据我所知，调用“mvn clean install”应该通过测试阶段（执行测试......），因此应该调用exec-maven-plugin，它应该执行main方法。我是对的吗？
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>
现在又修改了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>
主要班级：
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.");
}
}
答案 0 :(得分：14)
最后我发现了问题。这是一个非常愚蠢的错误：
在pom.xml中，我在<pluginManagement>节点周围使用了<plugins>。
Maven没有抱怨，但忽略了所有插件配置。 也许有人可以使用这些信息...
感谢您的帮助！
答案 1 :(得分：2)
编译阶段可能不合适，你试过吗
<phase>test</phase>
答案 2 :(得分：1)
如果你在阶段编译时设置它，那么你必须告诉maven在运行时需要运行compile。您没有通过maven命令传递任何阶段。您应该mvn compile exec:java ...或更高（测试，安装，...）。
这是我对exec maven插件的使用（使用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>