从单个 Maven 项目构建 EAR

Building EAR from a single Maven project

有一个Maven工程,以前是JAR打包类型。现在项目已经发展,需要将其构建为 EAR,包括 JAR 本身及其依赖项。

是否一定要引入第二个EAR封装类型的POM?是否可以从单个 Maven 项目构建 JAR+EAR?这背后的原因是我真的不想彻底重组我的存储库结构。

如果不可能,我想我需要以某种方式重新组织项目结构以使用 Maven 模块。在这种情况下,您会推荐什么(子)模块结构?

我认为你可以在每次构建项目时使用 maven war 插件生成一个 war 文件

 <build>
<plugins>
  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-ear-plugin</artifactId>
    <version>2.3.2</version>
    <!-- configuring the ear plugin -->
    <configuration>
      <modules>
        <!-- all your modles -->
      </modules>
    </configuration>
  </plugin>
</plugins>

您将需要 3 个 pom,这是一个工作示例;

pom 1 是父节点

<?xml version="1.0" encoding="UTF-8"?>
<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.greg</groupId>
  <artifactId>ear-example</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>pom</packaging>

  <name>ear-example</name>
  <modules>
    <module>example-jar</module>
    <module>example-ear</module>
  </modules>

</project>

pom 2 是 jar 或 war

<?xml version="1.0"?>
<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>
    <groupId>com.greg</groupId>
    <artifactId>ear-example</artifactId>
    <version>1.0-SNAPSHOT</version>
  </parent>

  <artifactId>example-jar</artifactId>
  <packaging>jar</packaging>

  <name>com.greg</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

pom 3 是依赖于 jar/war 并使用 ear plugin

的耳朵
<?xml version="1.0"?>
<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>
    <groupId>com.greg</groupId>
    <artifactId>ear-example</artifactId>
    <version>1.0-SNAPSHOT</version>
  </parent>

  <artifactId>example-ear</artifactId>
  <packaging>ear</packaging>

  <dependencies>
    <dependency>
      <groupId>com.greg</groupId>
      <artifactId>example-jar</artifactId>
      <version>${project.version}</version>
    </dependency>
  </dependencies>

  <build>
   <plugins>
     <plugin>
        <artifactId>maven-ear-plugin</artifactId>
        <version>2.10.1</version>
        <configuration>
        </configuration>
      </plugin>
    </plugins>
  </build>

</project>