Maven——添加源依赖；但 eclipse 中没有可用于 GWT 编译的 java 源文件

Question

通常下面的 pom 配置对我有用。我过去曾成功地将 jar 文件的源代码作为依赖项添加到我的项目中？

我有两个这样定义的 jar 文件：

<dependencies>  
  <dependency>  
    <groupId>myGroup</groupId>  
    <artifactId>myJar</artifactId>  
    <version>4.0</version>   
    <type>jar</type>  
    </dependency>    
  <dependency>  
    <groupId>myGroup</groupId>  
    <artifactId>myJar</artifactId>  
    <version>4.0</version>  
    <type>jar</type>  
    <classifier>sources</classifier>  
  </dependency>  
</dependencies>

当我从 Windows 资源管理器视图中打开 myJar-4.0-sources.jar 文件时，我会看到它关联的包中的所有 java 源文件。但是，当我在 Maven 依赖项中查看 Eclipse 项目时，我只看到 xml 文件，没有 myJar-4.0-sources.jar 的 java 文件，

顺便说一句，无论我在 Eclipse 内部还是外部运行 Maven 构建，它都会抱怨没有源代码应在 myJar-4.0-sources.jar 中找到的类的代码。

顺便说一句，这是 GWT 编译。

这是实际的错误消息：

[INFO] [gwt:compile {execution: default}]
[INFO] auto discovered modules [com.noesis.calendar.events.CalendarEvents]
[INFO] Loading inherited module 'com.noesis.commons.Commons'
[INFO]    [WARN] Non-canonical source package: ./
[INFO] Compiling module com.noesis.calendar.events.CalendarEvents
[INFO]    Validating newly compiled units
[INFO]       [ERROR] Errors in 'file:/C:/dev/pouncil_projects/calendar-events/src/main/java/com/noesis/calendar/events/shared/model/Calendar
Event.java'
[INFO]          [ERROR] Line 102: No source code is available for type com.noesis.commons.exceptions.CloneException; did you forget to inher
it a required module?
[INFO]       [ERROR] Errors in 'jar:file:/C:/Documents%20and%20Settings/Tonte%20Pouncil/.m2/repository/com/noesis/commons/noesis-commons/0.0
.1-SNAPSHOT/noesis-commons-0.0.1-SNAPSHOT-sources.jar!/com/noesis/commons/domain/models/core/BaseEntityModel.java'
[INFO]          [ERROR] Line 27: No source code is available for type com.noesis.commons.exceptions.CloneException; did you forget to inheri
t a required module?
[INFO]       [ERROR] Errors in 'jar:file:/C:/Documents%20and%20Settings/Tonte%20Pouncil/.m2/repository/com/noesis/commons/noesis-commons/0.0
.1-SNAPSHOT/noesis-commons-0.0.1-SNAPSHOT-sources.jar!/com/noesis/commons/domain/models/core/DomainModelException.java'
[INFO]          [ERROR] Line 6: No source code is available for type com.noesis.commons.exceptions.ApplicationException; did you forget to i
nherit a required module?
[INFO]          [ERROR] Line 14: No source code is available for type com.noesis.commons.Context; did you forget to inherit a required modul
e?
[INFO]       [ERROR] Errors in 'jar:file:/C:/Documents%20and%20Settings/Tonte%20Pouncil/.m2/repository/com/noesis/commons/noesis-commons/0.0
.1-SNAPSHOT/noesis-commons-0.0.1-SNAPSHOT-sources.jar!/com/noesis/commons/domain/models/core/PersistableBaseModel.java'
[INFO]          [ERROR] Line 70: No source code is available for type com.noesis.commons.calendar.CalendarUtility; did you forget to inherit
 a required module?
[INFO]          [ERROR] Line 84: The method clone() is undefined for the type Object
[INFO]          [ERROR] Line 91: No source code is available for type com.noesis.commons.exceptions.CloneException; did you forget to inheri
t a required module?
[INFO]    Finding entry point classes
[INFO]       [ERROR] Unable to find type 'com.noesis.calendar.events.client.CalendarEvents'
[INFO]          [ERROR] Hint: Previous compiler errors may have made this type unavailable
[INFO]          [ERROR] Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not b
e adding its source path entries properly
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR`

[INFO]          [ERROR] Line 102: No source code is available for type com.noesis.commons.exceptions.CloneException; did you forget to inher
it a required module?

有人知道为什么会出现这种情况吗？

Answer 1

GWT 在与已编译的 JAR 相同的 JAR 中查找依赖项源
类文件。由于图书馆在您的控制之下，您最好
当然是将类文件和源文件包含在
相同的 JAR。为此，将 添加到 部分
POM（假设标准 Maven 源布局）：

<project>
  <build>
    <resources>
      <resource>
        <directory>src/main/java</directory>
      </resource>
    </resources>
  </build>
</project>

Answer 2

GWT 在与编译的类文件相同的 JAR 中查找依赖项源。您应该将类​​文件和源文件包含在同一个 JAR 中。为此，将 添加到 POM 的 部分：

<project>
  <build>
    <resources>
      <!-- include the source files in our main jar for use by GWT -->
      <resource>
        <directory>${project.build.sourceDirectory}</directory>
      </resource>
      <!-- and continue to include our standard resources -->
      <resource>
        <directory>${basedir}/src/main/resources</directory>
      </resource>
    </resources>
  </build>
</project>

Answer 3

我终于明白我的问题是。这是我的 .gwt.xml 文件。它没有正确引用 GWT 类。并不是我解决了这个问题，我相信我想通过源 jar 文件引用我的源库的原始方式将会起作用。谢谢。