如何在Maven编译期间忽略Java Source目录？ [英] How to ignore the Java Source directory during Maven Compilation?

问题描述

我正在尝试使用 Lombok Maven插件使用 Lombok 时确保正确创建Javadoc。

Lombok Maven在编译之前引入了新的代码生成目标。在我的配置中，我的 sourceDirectory （带有Lombok注释的Java， src / main / java ）被处理以创建Java（ target / generated-sources / delombok 。

然而，<$ c $中的每个文件都没有Lombok注释c> sourceDirectory 现在在 target / generated-sources / delombok 中有一个相应的（同名）文件，导致由于重复的类导致编译失败。

如何告诉Java编译器忽略 sourceDirectory 中的来源？

请注意，默认的Lombok Maven配置会让开发人员将Java（带有Lombok注释）放在 src / main / lombok 文件夹而不是 src / main / java 。但是，我不希望这样做，因为它会混淆IDE并且我的代码编译得很好（如果我删除了Maven插件）。

另请注意，只需重新定义 sourceDirectory 也会扰乱IDE（他们不知道在哪里可以找到Java源代码！）。

解决方案

我最近改用了使用flakey maven-exec-plugin方法为javadoc工具生成原始资源以使用lombok-maven-plugin

My设置

• src / main / java
$ b中的所有来源$ b
• 生成的资源包含在 target / generated-sources / delombok

<我最初遇到了这个问题，但它似乎是一个简单的修复：不要让lombok-maven-plugin使用 addOutputDirectoy 将delombok路径添加到编译器源路径。 IE

 < plugin> 
< groupId> org.projectlombok< / groupId> 
< artifactId> lombok-maven-plugin< / artifactId> 
< version> 0.11.2.0< / version> 
< executions> 
< execution> 
< phase> generate-sources< / phase> 
< goals> 
< goal> delombok< / goal> 
< / goals> 
< / execution> 
< / executions> 
< configuration> 
< addOutputDirectory> false< / addOutputDirectory> 
< sourceDirectory> src / main / java< / sourceDirectory> 
< / configuration> 
< / plugin> 
  

这似乎解决了现在的问题

编辑：奖励，如何使用此设置生成正确的javadoc

 < plugin> 
< groupId> org.apache.maven.plugins< / groupId> 
< artifactId> maven-javadoc-plugin< / artifactId> 
< version> 2.8.1< / version> 
< configuration> 
< defaultVersion> $ {project.version}< / defaultVersion> 
< sourcepath> target / generated-sources / delombok< / sourcepath> 
< / configuration> 
< / plugin> 
  

I am trying to use the Lombok Maven Plugin to ensure the correct creation of Javadocs when using Lombok.

Lombok Maven introduces a new code generation goal, just prior to compilation. In my configuration, my sourceDirectory (Java with Lombok annotations, src/main/java) is processed to create Java (without Lombok annotations) in target/generated-sources/delombok.

However, every file in sourceDirectory now has a corresponding (identically named) file in target/generated-sources/delombok, resulting in compilation failures due to duplicate classes.

How can I tell the Java compiler to ignore the sources in sourceDirectory?

Note that the default Lombok Maven configuration would have the developer put Java (with Lombok annotations) in the src/main/lombok folder instead of src/main/java. However, I do not wish to do this because it confuses IDEs and my code compiles just fine (if I remove the Maven plugin).

Also note that simply redefining sourceDirectory will also upset IDEs (they no longer know where to find the Java source code!).

解决方案

I recently switched from using the flakey maven-exec-plugin approach to generate raw sources for the javadoc tool to using lombok-maven-plugin

My setup

• All sources in src/main/java
• Generated sources go in target/generated-sources/delombok

I initially ran into this problem but it seems to be an easy fix: Don't let lombok-maven-plugin add the delombok path to the compiler source paths with addOutputDirectoy. IE

<plugin>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok-maven-plugin</artifactId>
    <version>0.11.2.0</version>
    <executions>
        <execution>
            <phase>generate-sources</phase>
            <goals>
                <goal>delombok</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
        <addOutputDirectory>false</addOutputDirectory>
        <sourceDirectory>src/main/java</sourceDirectory>
    </configuration>
</plugin>

This seems to of solved the issue for now

EDIT: Bonus, how to generate proper javadocs with this setup

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-javadoc-plugin</artifactId>
    <version>2.8.1</version>
    <configuration>
        <defaultVersion>${project.version}</defaultVersion>
        <sourcepath>target/generated-sources/delombok</sourcepath>
    </configuration>
</plugin>

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