我试图在一个简单的双模块项目中运行 exec-maven-plugin
的 exec:java
目标,其中一个模块依赖于另一个模块 . 到目前为止,我可以't find a configuration that works. Here'一个简化的测试用例:
-
exec-multi-module-test /
-
pom.xml
-
module1 /
-
pom.xml
-
src /
-
main /
-
java /
-
HelloPrinter.java
-
module2 /
-
pom.xml
-
src /
-
main /
-
java /
-
MyMain.java
这是父母pom:
<?xml version="1.0" encoding="UTF-8"?>
<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>com.mkscrg.sandbox</groupId>
<artifactId>exec-multi-module-test</artifactId>
<version>1.0</version>
<packaging>pom</packaging>
<modules>
<module>module1</module>
<module>module2</module>
</modules>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
</plugin>
</plugins>
</build>
</project>
module1
的pom:
<?xml version="1.0" encoding="UTF-8"?>
<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>
<parent>
<artifactId>exec-multi-module-test</artifactId>
<groupId>com.mkscrg.sandbox</groupId>
<version>1.0</version>
</parent>
<artifactId>module1</artifactId>
</project>
module2
的pom:http://maven.apache.org/xsd/maven-4.0.0.xsd“> 4.0.0
<parent>
<artifactId>exec-multi-module-test</artifactId>
<groupId>com.mkscrg.sandbox</groupId>
<version>1.0</version>
</parent>
<artifactId>module2</artifactId>
<dependencies>
<dependency>
<groupId>com.mkscrg.sandbox</groupId>
<artifactId>module1</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
</project>
此项目从顶部成功编译,但运行 mvn exec:java -Dexec.mainClass=myMain
失败:
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] exec-multi-module-test
[INFO] module1
[INFO] module2
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building exec-multi-module-test 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> exec-maven-plugin:1.2.1:java (default-cli) @ exec-multi-module-test >>>
[INFO]
[INFO] <<< exec-maven-plugin:1.2.1:java (default-cli) @ exec-multi-module-test <<<
[INFO]
[INFO] --- exec-maven-plugin:1.2.1:java (default-cli) @ exec-multi-module-test ---
[WARNING]
java.lang.ClassNotFoundException: MyMain
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:285)
at java.lang.Thread.run(Thread.java:680)
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] exec-multi-module-test ............................ FAILURE [0.363s]
[INFO] module1 ........................................... SKIPPED
[INFO] module2 ........................................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.566s
[INFO] Finished at: Mon Jun 18 14:11:54 PDT 2012
[INFO] Final Memory: 3M/81M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project exec-multi-module-test: An exception occured while executing the Java class. MyMain -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
配置此项目以允许 exec:java
查看 MyMain
的正确方法是什么?
编辑:这里's a gist if you'我想自己尝试一下:https://gist.github.com/2950830
编辑:澄清:我知道有可能 mvn install
然后从 module2
的目录运行 exec:java
或从顶部使用 -pl
标志 . 但是,我想避免运行 mvn install
. 没有必要修改我的本地存储库以便在多模块项目中运行此目标 . 就像 mvn compile
"just works"与多模块项目一样,其他目标/阶段也是如此 .
3 回答
当从父项运行时,多模块项目中的目标将针对所有模块运行 . 我不认为这就是你想要的 . 你可以试试:
那可能有用吗?更多信息:
但是,我认为在运行它之前将目录更改为包含可执行文件的子模块更直观 .
您应该将
exec-maven-plugin
绑定到maven生命周期目标,例如verify
.由于您希望仅为
module
2执行插件,因此请在pluginManagement
中的父pom中定义插件配置 . 仅在module 2
中使用相同的内容 .然后运行以下命令:
mvn verify -Dexec.mainClass=MyMain
.父母pom
模块2
如果没有
mvn install
的单命令替代方案,请参阅此答案:https://stackoverflow.com/a/26448447/1235281
通过在父
pom.xml
中使用skip
,您可以告诉Maven仅在特定子模块上运行exec:java
.GitHub:https://github.com/Oduig/mavenfiddle