maven-war-plugin: 排除除一个以外的所有目录

Question

我的目录结构如下：

src
|__ main
    |__ java
    |__ resources
    |__ webapp
        |__ css_blue
        |__ css_green
        |__ css_red
        |__ WEB-INF

其中有 css 的三个独立目录（如 css_red、css_green、css_blue）。在这里，我只想包含基于 -D 开关的其中一个：

mvn clean install -Dcss=green

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.faisal.dwr</groupId>
  <artifactId>chatbox</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <dependencies>
    <dependency>
      <groupId>javax</groupId>
      <artifactId>javaee-api</artifactId>
      <version>6.0</version>
      <scope>provided</scope>
    </dependency>
    <!-- Spring - MVC -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>
    <!-- Spring Web Security -->
    <dependency>
      <groupId>org.springframework.security</groupId>
      <artifactId>spring-security-web</artifactId>
      <version>4.0.3.RELEASE</version>
    </dependency>
    <!-- Spring Security Config -->
    <dependency>
      <groupId>org.springframework.security</groupId>
      <artifactId>spring-security-config</artifactId>
      <version>4.0.3.RELEASE</version>
    </dependency>
    <!-- DWR -->
    <dependency>
      <groupId>org.directwebremoting</groupId>
      <artifactId>dwr</artifactId>
      <version>3.0.0-RELEASE</version>
    </dependency>
  </dependencies>

    <build>
      <finalName>${project.artifactId}</finalName>
      <plugins>
       <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-war-plugin</artifactId>
        <version>2.6</version>
        <configuration>
            <packagingIncludes>css_${css}</packagingIncludes>
        </configuration>
       </plugin>
      </plugins>
    </build>
</project>

但在这种情况下，WEB-INF 下的文件和目录不存在于最终的 .war 文件中。

Answer 1

默认情况下，maven-war-plugin 的 packagingIncludes 属性将包含 src/main/webapp 下的所有内容。当您覆盖它以指定

<packagingIncludes>css_${css}/**</packagingIncludes>

然后插件将只包含该文件夹（及其下的所有内容），而不是 WEB-INF。一个简单的解决方案是 re-include WEB-INF:

<packagingIncludes>WEB-INF/**,css_${css}/**</packagingIncludes>

通过这样的配置，WEB-INF 下的所有内容和 css_${css} 下的所有内容都将包含在 war.

中

另一个不需要 re-adding 文件夹的解决方案是使用 <packagingExcludes> instead. This way, all files under src/main/webapp will be included, except those that we specify here. In this case, we can use a regular expression that says: exclude everything that starts with css and is not css_${css}.

<packagingExcludes>%regex[css_(?!${css}/).*]</packagingExcludes>

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