从Maven,我如何运行一个生活在src/test/java下的类？

我继承了一个代码库:)

在src/test/java /下面有一个我需要运行的文件(我需要运行它public static void main(String[] args),而不是其中的@Test方法).

我最接近的是:

mvn -e exec:java -Dexec.mainClass="com.me.packagex.RunFile" -Dexec.classpathScope="test"

但那失败了,似乎是因为RunFile想要使用src/main/java/com/me/packagex /(notice,/ main /,not/test /)下的类.其下的文件与RunFile在同一个包中,即'package com.me.packagex;'.

如果我删除它-Dexec.classpathScope="test"然后它根本找不到RunFile.就好像我需要给它两个范围,但它不接受"测试,编译".

我从(亲爱的离开)继承的人曾经从Eclipse运行它.我需要一种从命令行运行它的方法.

我希望这清楚地解释了.

tyvm,

---

这很有希望.帕斯卡,我已经试过你的榜样,并且没有为我工作.

虽然现在我看着它 - 它没有找到Demo,而不是找到Dog.

Apache Maven 2.2.1 (rdebian-1)
Java version: 1.6.0_18
Java home: /usr/lib/jvm/java-6-openjdk/jre
Default locale: en_GB, platform encoding: UTF-8
OS name: "linux" version: "2.6.32-25-generic" arch: "i386" Family: "unix"

$ mvn -e exec:java -Dexec.mainClass="com.stackoverflow.Demo" -Dexec.classpathScope="test"

[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] An exception occured while executing the Java class. com.stackoverflow.Demo

[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: An exception occured while executing the Java class. com.stackoverflow.Demo
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719)
        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.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.MojoExecutionException: An exception occured while executing the Java class. com.stackoverflow.Demo
        at org.codehaus.mojo.exec.ExecJavaMojo.execute(ExecJavaMojo.java:346)
        at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
        ... 17 more
Caused by: java.lang.ClassNotFoundException: com.stackoverflow.Demo
        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:307)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:284)
        at java.lang.Thread.run(Thread.java:619)

Pascal Thive.. 20

(...)我希望这清楚地解释.

不错,但我无法重现.我创建了一个项目:

$ mvn archetype:generate -DgroupId=com.stackoverflow \
                         -DartifactId=Q4060613 \
                         -Dversion=1.0-SNAPSHOT \
                         -DarchetypeArtifactId=maven-archetype-quickstart 

然后cd编辑并创建一个Dog类(下src/main/java):

$ cd Q4060613
$ cat > src/main/java/com/stackoverflow/Dog.java
package com.stackoverflow;

public class Dog {
    public String bark() {
        return "woof!";
    }
}

并创建了一个Demo类(下src/test/java):

$ cat > src/test/java/com/stackoverflow/Demo.java 
package com.stackoverflow;

public class Demo {
    public static void main(String[] args) {
        System.out.println(new Dog().bark());
    }
}

编译源代码后,运行您提供的命令按预期工作:

$ mvn test
...
$ mvn exec:java -Dexec.mainClass="com.stackoverflow.Demo" -Dexec.classpathScope="test"
[INFO] Scanning for projects...
...
[INFO] --- exec-maven-plugin:1.2:java (default-cli) @ Q4060613 ---
woof!
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
...

别的一定是错的.

1> Pascal Thive..：

---

(...)我希望这清楚地解释.

不错,但我无法重现.我创建了一个项目:

$ mvn archetype:generate -DgroupId=com.stackoverflow \
                         -DartifactId=Q4060613 \
                         -Dversion=1.0-SNAPSHOT \
                         -DarchetypeArtifactId=maven-archetype-quickstart 

然后cd编辑并创建一个Dog类(下src/main/java):

$ cd Q4060613
$ cat > src/main/java/com/stackoverflow/Dog.java
package com.stackoverflow;

public class Dog {
    public String bark() {
        return "woof!";
    }
}

并创建了一个Demo类(下src/test/java):

$ cat > src/test/java/com/stackoverflow/Demo.java 
package com.stackoverflow;

public class Demo {
    public static void main(String[] args) {
        System.out.println(new Dog().bark());
    }
}

编译源代码后,运行您提供的命令按预期工作:

$ mvn test
...
$ mvn exec:java -Dexec.mainClass="com.stackoverflow.Demo" -Dexec.classpathScope="test"
[INFO] Scanning for projects...
...
[INFO] --- exec-maven-plugin:1.2:java (default-cli) @ Q4060613 ---
woof!
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
...

别的一定是错的.

2> 小智..：

---

在exec-maven-plugin插件的pom.xml中包含以下行. test

POM中的插件部分看起来像这样

    org.codehaus.mojo
    exec-maven-plugin
    
        
            my-execution
            test
            
                java
            
        
    
    
        com.example.MainClass
            test
    

注意:com.example.MainClass是包含main方法的类.

---

很多有用的评论：最终使我想到：mvn test-compile exec：java -Dexec.mainClass =“ com.stackoverflow.Demo” -Dexec.classpathScope =“ test”

3> Jin Kwon..：

---

我遇到了同样的问题并弄明白了.

简而言之,必须在 exec:java目标之前编译该类.(test-compile如果该类已经被其他用户操作编译,那么它肯定没有阶段.注意Pascal Thivent,在他的回答中,mvn test之前调用过exec:java.)

$ mvn -Dexec.mainClass=... -Dexec.classpathScope=test test-compile exec:java

如果你想ClassNotFoundException再次看到它,你可以自己证明.

$ mvn -Dexec.mainClass=... -Dexec.classpathScope=test clean exec:java