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我有一个使用 Dagger2 并使用 Maven 构建的桌面 Java 项目。我无法运行 compile和 package依次。这有效:

$ mvn clean 
$ mvn compile

这有效，生成了一个可以正常运行的可执行 jar: 
$ mvn clean 
$ mvn package

但这失败了: 
$ mvn clean 
$ mvn compile 
$ mvn package

当 package到达使用 Dagger2 的模块，它输出: 
[INFO] Changes detected - recompiling the module!

来自 mvn -e package 的错误是: 
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project weapon: Compilation failure -> [Help 1] 
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project weapon: Compilation failure 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213) 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) 
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) 
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) 
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) 
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) 
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320) 
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156) 
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537) 
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196) 
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) 
Caused by: org.apache.maven.plugin.compiler.CompilationFailureException: Compilation failure 
    at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:915) 
    at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:129) 
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) 
    ... 19 more

该模块具有此依赖性: 
<dependency> 
    <groupId>com.google.dagger</groupId> 
    <artifactId>dagger</artifactId> 
    <version>2.1</version> 
    <scope>compile</scope> 
</dependency>

该模块使用编译器插件版本 3.3，如下所示: 
<plugin> 
    <groupId>org.apache.maven.plugins</groupId> 
    <artifactId>maven-compiler-plugin</artifactId> 
    <dependencies> 
        <dependency> 
            <groupId>com.google.dagger</groupId> 
            <artifactId>dagger-compiler</artifactId> 
            <version>2.1</version> 
        </dependency> 
    </dependencies> 
    <configuration> 
        <source>1.7</source> 
        <target>1.7</target> 
        <forceJavacCompilerUse>true</forceJavacCompilerUse> 
    </configuration> 
</plugin>

这是唯一与 Dagger 相关的配置。为什么我不能运行 package在 build 之后?

可能相关:我以为 forceJavacCompilerUse不再需要，但没有它，Dagger 似乎根本无法运行。我在生成的组件实现 ( DaggerMyComponent) 上遇到未知符号错误。

编辑:这是 mvn -e package 的完整输出, 命令提示符到命令提示符: 
kevin@aphrodite:~/Projects/IDEA/Dark Matter$ mvn -e package 
[INFO] Error stacktraces are turned on. 
[INFO] Scanning for projects... 
[INFO] ------------------------------------------------------------------------ 
[INFO] Reactor Build Order: 
[INFO]  
[INFO] parent 
[INFO] weapon 
[INFO] scripts 
[INFO] assembly 
[INFO]                                                                          
[INFO] ------------------------------------------------------------------------ 
[INFO] Building parent 2.0-SNAPSHOT 
[INFO] ------------------------------------------------------------------------ 
[INFO]                                                                          
[INFO] ------------------------------------------------------------------------ 
[INFO] Building weapon 2.0-SNAPSHOT 
[INFO] ------------------------------------------------------------------------ 
[INFO]  
[INFO] --- maven-resources-plugin:2.3:resources (default-resources) @ weapon --- 
[INFO] Using 'UTF-8' encoding to copy filtered resources. 
[INFO] Copying 1 resource 
[INFO]  
[INFO] --- maven-compiler-plugin:3.3:compile (default-compile) @ weapon --- 
[INFO] Changes detected - recompiling the module! 
[INFO] Compiling 8 source files to /home/kevin/Projects/IDEA/Dark Matter/weapon/target/classes 
[INFO] ------------------------------------------------------------------------ 
[INFO] Reactor Summary: 
[INFO]  
[INFO] parent ............................................ SUCCESS [0.001s] 
[INFO] weapon ............................................ FAILURE [1.641s] 
[INFO] scripts ........................................... SKIPPED 
[INFO] assembly .......................................... SKIPPED 
[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD FAILURE 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 1.735s 
[INFO] Finished at: Fri Mar 11 04:32:38 MST 2016 
[INFO] Final Memory: 21M/173M 
[INFO] ------------------------------------------------------------------------ 
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project weapon: Compilation failure -> [Help 1] 
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project weapon: Compilation failure 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213) 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) 
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) 
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) 
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) 
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) 
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320) 
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156) 
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537) 
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196) 
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) 
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) 
Caused by: org.apache.maven.plugin.compiler.CompilationFailureException: Compilation failure 
    at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:915) 
    at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:129) 
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) 
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) 
    ... 19 more 
[ERROR]  
[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/MojoFailureException 
[ERROR]  
[ERROR] After correcting the problems, you can resume the build with the command 
[ERROR]   mvn <goals> -rf :weapon 
kevin@aphrodite:~/Projects/IDEA/Dark Matter$

编辑 2 : 我注意到当我运行 package在 clean 之后单独出现，它说它正在编译 6 个源。这就是项目中有多少手写类。当我运行 compile之前 package ，后者说它正在编译 8 个源。看起来像 dagger-compiler在一个干净的项目上运行，它默默地生成并编译它的源代码。然后 package看到新的源并尝试编译它们。谜团在于它失败的原因。运行 compile连续两次以相同的方式失败。

编辑 3:我试过 this answer , 指定 dagger.internal.codegen.ComponentProcessor作为 -processor争论。现在我第一次运行编译时，我看到它编译 6 个文件和 8 个文件的两个 channel : 
[INFO] --- maven-compiler-plugin:3.3:compile (process-annotations) @ weapon --- 
[INFO] Changes detected - recompiling the module! 
[INFO] Compiling 6 source files to /home/kevin/Projects/IDEA/Dark Matter/weapon/target/classes 
[INFO]  
[INFO] --- maven-resources-plugin:2.3:resources (default-resources) @ weapon --- 
[INFO] Using 'UTF-8' encoding to copy filtered resources. 
[INFO] Copying 1 resource 
[INFO]  
[INFO] --- maven-compiler-plugin:3.3:compile (default-compile) @ weapon --- 
[INFO] Changes detected - recompiling the module! 
[INFO] Compiling 8 source files to /home/kevin/Projects/IDEA/Dark Matter/weapon/target/classes

这是意料之中的，而这 compile成功。但是如果我运行 package , 或 compile再次，它和以前一样失败。

Dagger 产生的来源是 /target/generated-sources/annotations .我想我需要告诉 Maven 用那条路径做点什么，但我不知道是什么。 compile 是有道理的连续运行两次时检测源更改，但我不知道为什么会导致失败。也许我需要有条件地运行注释处理步骤，但我不知道该怎么做或条件应该是什么。

请您参考如下方法:

我设法重现了您的问题。

关键似乎是 maven-compiler-plugin:3.3
当我使用 maven-compiler-plugin:3.1 运行时, 错误没有出现。


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