我正在尝试发布我们的多模块 Maven 项目,但我不知道如何正确更新 POM 中的版本号。
maven 发布插件不会更新父 POM 依赖管理部分中的版本 - 这似乎是一个已知错误。
我尝试使用版本插件,但我有两个问题:
- 该插件仅更新我的顶级 POM;可能是因为多模块项目 POM不是模块 POM的 paremt POM
- 更重要的是,我怎样才能模仿发布插件的行为来自动计算从 POM 中的当前版本(例如 1.0.0-SNAPSHOT)中设置的版本(例如 1.0.0)......而不需要进入 perl 脚本?
任何不涉及脚本且不需要我在dependencyManagement 之外声明依赖版本的建议将不胜感激!
以下是 4 个 POM(模块子目录中的模块 POM):
============ pom-parent.xml ==================
<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.acme</groupId>
<artifactId>dummy-parent</artifactId>
<version>2.5</version>
<packaging>pom</packaging>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.acme</groupId>
<artifactId>module1</artifactId>
<version>1.0.0-SNAPSHOT</version>
</dependency>
</dependencies>
</dependencyManagement>
</project>
============= 多模块pom: pom.xml ================
<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.acme</groupId>
<artifactId>dummy-parent</artifactId>
<relativePath>pom-parent.xml</relativePath>
<version>2.5</version>
</parent>
<groupId>com.acme</groupId>
<artifactId>multi-module</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>pom</packaging>
<modules>
<module>module1</module>
<module>module2</module>
</modules>
<scm>
<developerConnection>scm:svn:https://svnserver.fairisaac.com:8443/nowhere</developerConnection>
</scm>
</project>
============== module1 POM: module1/pom.xml ================
<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.acme</groupId>
<artifactId>dummy-parent</artifactId>
<relativePath>../pom-parent.xml</relativePath>
<version>2.5</version>
</parent>
<groupId>com.acme</groupId>
<artifactId>module1</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>jar</packaging>
</project>
============= 模块 2 POM:module2/pom.xml =============
<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.acme</groupId>
<artifactId>dummy-parent</artifactId>
<relativePath>../pom-parent.xml</relativePath>
<version>2.5</version>
</parent>
<groupId>com.acme</groupId>
<artifactId>module2</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>com.acme</groupId>
<artifactId>module1</artifactId>
</dependency>
</dependencies>
</project>
========= 编辑 ===============
...如果我将dependencyManagement部分中的显式版本替换为
<version>${project.version}</version>
... maven 3.0.4 因 NPE 而失败:
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.478s
[INFO] Finished at: Fri Apr 12 12:09:08 CEST 2013
[INFO] Final Memory: 9M/120M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.0:prepare (default-cli) on project multi-
module: Execution default-cli of goal org.apache.maven.plugins:maven-release-plugin:2.0:prepare failed. NullPointerExcep
tion -> [Help 1]