Javac不会编译类到目标文件夹

Question

是的我做过mvn clean。

试图在Maven的3.1.0，3.0.4和3.0.3

我的多模块Maven项目的构建（MVN安装）在某个模块出现故障。原因是最后一个模块是用SUCCESS构建的，但实际上罐子是空的。然后下一个模块找不到需要查看的类。

[INFO] Reactor Summary: 
[INFO] 
[INFO] myproject ......................................... SUCCESS [0.309s] 
[INFO] myproject-service ................................. SUCCESS [0.011s] 
[INFO] myproject-service-api ............................ SUCCESS [1.242s] 
[INFO] myproject-service-spi ............................ FAILURE [1.422s] 
[INFO] myproject-datap-lib-impl .................. SKIPPED 
... 
[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD FAILURE 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 19.746s 
[INFO] Finished at: Wed Jul 24 17:30:57 EEST 2013 
[INFO] Final Memory: 62M/919M 
[INFO] ------------------------------------------------------------------------ 
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project myproject-service-spi: Compilation failure: Compilation failure: 
[ERROR] C:\dev\mything\myproject\trunk-checkout2\service\spi\src\main\java\org\myself\service\spi\validation\fake\AbstractConfigurableFakeDetector.java:[12,55] error: package org.myself.service.validation.fake does not exist 

以下是运行mvn -X clean install -amd -Dmaven.test.skip=true > build.loghttp://nopaste.info/7f07571993.html

在IntelliJ IDEA的输出完整的调试这一切看起来不错，类存在。

不只是生成的jar是空的，也是文件夹service/api/target/classes。对于服务的API

我的POM文件是非常基本的，只是工作和其他人一样：在这里

<?xml version="1.0" encoding="UTF-8"?> 
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" 
     xmlns="http://maven.apache.org/POM/4.0.0" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> 
    <modelVersion>4.0.0</modelVersion> 

    <parent> 
     <artifactId>myparent</artifactId> 
     <groupId>my.parent</groupId> 
     <version>myversion</version> 
    </parent> 

    <groupId>myproject.service.api</groupId> 
    <artifactId>myproject-service-api</artifactId> 

    <dependencies> 
     ... some local and external dependencies 
    </dependencies> 

    <properties> 
    </properties> 
</project> 

没有Maven插件。

我不认为我有循环依赖，因为Maven 3会检测到这一点。

UPDATE

我现在得到它归结为这样：

[INFO]                   
[INFO] ------------------------------------------------------------------------ 
[INFO] Building myproject-service-api 4.0-SNAPSHOT 
[INFO] ------------------------------------------------------------------------ 
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ myproject-service-api --- 
[INFO] Using 'UTF-8' encoding to copy filtered resources. 
[INFO] skip non existing resourceDirectory C:\myproject\trunk-checkout2\service\api\src\main\resources 
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ myproject-service-api --- 
[INFO] Changes detected - recompiling the module! 
[INFO] Compiling 217 source files to C:\myproject\trunk-checkout2\service\api\target\classes 
[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD SUCCESS 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 3.908s 
[INFO] Finished at: Wed Jul 24 21:56:49 EEST 2013 
[INFO] Final Memory: 20M/232M 
[INFO] ------------------------------------------------------------------------ 

并运行后右：简单MVN创建空罐子给我这个输出IntelliJ IDEA的模块上编译那个文件夹C：\ myproject \ trunk-checkout2 \ service \ api \ target \ classes是空的。所以检测到217个Java类，maven说它编译它们并将它们放到我的目标文件夹中，但它没有。

更新2

我比较的模块mvn -X compile该作品相比，这一个输出（记住，在建所有成功结束，但是这其中有一个空的目标文件夹）。有一个区别：失败的人列出所有的Java文件为“陈旧来源检测”。

[DEBUG] Using compiler 'javac'. 
[DEBUG] Source directories: [C:\myproject\trunk-checkout2\service\api\src\main\java] 
[DEBUG] Classpath: [C:\myproject\trunk-checkout2\service\api\target\classes 
... all the dependency jars 
[DEBUG] Output directory: C:\myproject\trunk-checkout2\service\api\target\classes 
[DEBUG] CompilerReuseStrategy: reuseCreated 
[DEBUG] useIncrementalCompilation enabled 
[DEBUG] Stale source detected: C:\dev\myproject\trunk-checkout2\service\api\src\main\java\my\Class.java 
... listing all 217 classes 
[INFO] Changes detected - recompiling the module! 
[DEBUG] Classpath: 
[DEBUG] C:\myproject\trunk-checkout2\service\api\target\classes 
... all the dependency jars 
[DEBUG] Source roots: 
[DEBUG] C:\myproject\trunk-checkout2\service\api\src\main\java 
[DEBUG] Command line options: 
[DEBUG] -d (...) -g -nowarn -target 1.6 -source 1.6 -encoding UTF-8 
[DEBUG] incrementalBuildHelper#beforeRebuildExecution 
[INFO] Compiling 217 source files to C:\myproject\trunk-checkout2\service\api\target\classes 
[DEBUG] incrementalBuildHelper#afterRebuildExecution 
[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD SUCCESS 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 4.060s 
[INFO] Finished at: Wed Jul 24 23:16:37 EEST 2013 
[INFO] Final Memory: 22M/328M 
[INFO] ------------------------------------------------------------------------ 

我已经看到了这个错误报告https://jira.codehaus.org/browse/MCOMPILER-205，我确实有这个模块中package-info.java文件，但我已经尝试了前3编译器插件，同样的结果。我已经用上面描述的注释尝试过了，也没有运气。所以我不认为这是相同的情况。

我没有一个公共静态无效的主力，因此这个bug Workaround for javac compilation order bug in maven不能吧。

更新3

有一个在javac的中止，恕不另行通知（-verbose开启）。只有1班作品，全部217人失败。所以我想我必须尝试找到导致它的原因，等等......将再次发布。

Answer 1

原因是由于javac中的错误。它无法处理的一些有效语法。然后生成空罐子，等等。

Answer 2

首先在你的日志输出有这样的事情${version}你应该解决而且大约有依赖关系等的重复定义其他几个警告提示

我已经采取了进一步深入查看日志输出：

[ERROR] C:devmythingmyprojecttrunk-checkout2servicespisrcmainjavaorgmyselfservicespivalidationfakeAbstractConfigurableFakeDetector.java:[12,55] error: package org.myself.service.validation.fake does not exist 
[ERROR] C:devmythingmyprojecttrunk-checkout2servicespisrcmainjavaorgmyselfservicespivalidationfakeAbstractConfigurableFakeDetector.java:[13,55] error: package org.myself.service.validation.fake does not exist 
[ERROR] C:devmythingmyprojecttrunk-checkout2servicespisrcmainjavaorgmyselfservicespivalidationfakeAbstractConfigurableFakeDetector.java:[82,14] error: cannot find symbol 
[ERROR] symbol: class SimpleValidationResult 
    location: class AbstractConfigurableFakeDetector 
C:devmythingmyprojecttrunk-checkout2servicespisrcmainjavaorgmyselfservicespivalidationfakeAbstractConfigurableFakeDetector.java:[106,66] error: cannot find symbol 
[ERROR] symbol: class FakeType 
    location: class AbstractConfigurableFakeDetector 
C:devmythingmyprojecttrunk-checkout2servicespisrcmainjavaorgmyselfservicespivalidationfakeAbstractConfigurableFakeDetector.java:[97,8] error: cannot find symbol 
[ERROR] symbol: class SimpleValidationResult 
    location: interface SomethingThatReturnsValidationResult 
C:devmythingmyprojecttrunk-checkout2servicespisrcmainjavaorgmyselfservicespigenderresultAverageComputedGenderResultCollector.java:[4,46] error: package org.myself.service.gender does not exist 
[ERROR] C:devmythingmyprojecttrunk-checkout2servicespisrcmainjavaorgmyselfservicespigenderresultAverageComputedGenderResultCollector.java:[5,46] error: package org.myself.service.gender does not exist 
[ERROR] C:devmythingmyprojecttrunk-checkout2servicespisrcmainjavaorgmyselfservicespigenderresultAbstractAverageGenderCollector.java:[4,46] error: package org.myself.service.gender does not exist 
[ERROR] C:devmythingmyprojecttrunk-checkout2servicespisrcmainjavaorgmyselfservicespigenderresultAverageComputedGenderResultCollector.java:[31,29] error: cannot find symbol 
[ERROR] symbol: class ComputedGenderResult 
    location: class AverageComputedGenderResultCollector 

这给我的印象是您正在使用测试类，或者可能是测试区域中的软件包名称，这些名称不起作用，或者您错过了与其他软件包的依赖关系。