Maven:Java类不会在Ant任务之后编译

Rats! parser generator . 胡扯!没有我知道的Maven插件,所以我尝试使用an t Java构建解析器 任务,就像这样:

 <plugin>
   <artifactId>maven-antrun-plugin</artifactId>
   <executions>
     <execution>
       <phase>generate-sources</phase>
       <configuration>
         <tasks>
           <mkdir dir="${project.build.directory}/generated-sources/main/java/" />
           <java classpath="lib/xtc.jar" classname="xtc.parser.Rats">
             <arg line="-in ${project.build.sourceDirectory}" />
             <arg line="-out ${project.build.directory}/generated-sources/main/java/" />
             <arg path="${project.build.sourceDirectory}/Dot.rats" />
           </java>
         </tasks>
         <sourceRoot>
           ${project.build.directory}/generated-sources/main/java
         </sourceRoot>
       </configuration>
       <goals>
         <goal>run</goal>
       </goals>
     </execution>
   </executions>
 </plugin>

什么老鼠的细节!不重要:最终的结果是 以上产生 Dot.java target/generated-sources/main/java . 它工作得很好。

问题是,有了这个 plugin pom.xml 项目中的Java文件被编译。

我生成了一个项目 mvn archetype:create -DgroupId=foo -DartifactId=bar ”并添加了 文件 src/main/java/Dot.rats :

module Dot;

public void Dot = "." !_ ; 

(这是一种只接受单点文件的语法。)

mvn compile “没有 插件 元素,我得到:

$ mvn compile
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building bar
[INFO]    task-segment: [compile]
[INFO] ------------------------------------------------------------------------
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:compile]
[INFO] Compiling 1 source file to
/home/chris/src/tests/maven/project1/bar/target/classes
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Wed Jul 01 18:57:08 EDT 2009
[INFO] Final Memory: 6M/67M
[INFO] ------------------------------------------------------------------------

src/main/java/foo/App.java ,由原型创建的Java类(即,不是生成的源文件)。

mvn clean “然后添加 插件 元素调用老鼠!,我得到:

$ mvn compile
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building bar
[INFO]    task-segment: [compile]
[INFO] ------------------------------------------------------------------------
[INFO] [antrun:run {execution: default}]
[INFO] Executing tasks
   [mkdir] Created dir:
/home/chris/src/tests/maven/project1/bar/target/generated-sources/main/java
Rats! Parser Generator, v. 1.14.2, (C) 2004-2008 Robert Grimm
Processing /home/chris/src/tests/maven/project1/bar/src/main/java/Dot.rats ...

一、 梅文在跑老鼠!(不是失败,AFAICT)但不是编译 任何 Java类,甚至不是预先存在的类 App.java . 跑完之后,我 target/generated-sources/main/java/Dot.java 但是没有 target/classes

我尝试过其他类型的Ant任务,它们不会干扰Java

<tasks>
  <mkdir dir="${project.build.directory}/generated-sources/main/java/" />
  <echo file="${project.build.directory}/generated-sources/main/java/Dot.java">
     public class Dot { }
  </echo>
</tasks>

我明白了

$ mvn compile
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building bar
[INFO]    task-segment: [compile]
[INFO] ------------------------------------------------------------------------
[INFO] [antrun:run {execution: default}]
[INFO] Executing tasks
[INFO] Executed tasks
[INFO] Registering compile source root
/home/chris/src/tests/maven/project1/bar/target/generated-sources/main/java
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:compile]
[INFO] Compiling 2 source files to
/home/chris/src/tests/maven/project1/bar/target/classes
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2 seconds
[INFO] Finished at: Wed Jul 01 19:03:34 EDT 2009
[INFO] Final Memory: 7M/79M
[INFO] ------------------------------------------------------------------------

很明显我不明白马文 java 任务。我在做什么简单的事吗 错了?有没有别的方法来完成这个任务 应该试试(也许是一种更“特立独行”的方式)?

[更新]有趣的故事。我试图用一个Maven插件替换Ant任务,方法是编写一个 RatsMojo xtc.parser.Rats 直接替换 插件

  <plugin>
    <groupId>edu.nyu.xtc</groupId>
    <artifactId>maven-xtc-plugin</artifactId>
    <executions>
      <execution>
        <phase>generate-sources</phase>
        <goals>
          <goal>rats</goal>
        </goals>
        <configuration>
          <inputDirectory>${project.build.sourceDirectory}</inputDirectory>
          <outputDirectory> ${project.build.directory}/generated-sources/main/java</outputDirectory>
          <grammarFile>${project.build.sourceDirectory}/Dot.rats</grammarFile>
        </configuration>
      </execution>
    </executions>
  </plugin>

它做着完全相同的事情:它跑老鼠!然后终止而不编译 任何 项目中的Java文件。