如何发布具有项目间依赖关系的Maven多模块项目？ [英] How to release Maven multi-module project with inter-project dependencies?

问题描述

让我们说我们有3层项目。数据库，业务，Web和聚合pom。

Lets say we have 3 layers project. DB, Business, Web and aggregating pom.

Project  
|-DB  
| |-pom.xml  
|-Business  
| |-pom.xml  
|-pom.xml

所有模块均已发布和分支在一起，因此将Aggregator pom配置为向所有子模块分配相同的版本。我们有以下版本：

All modules are ment to be released and branched together, so Aggregator pom is configured to assign the same version to all submodules. We have the following versions:

DB-0.1-SNAPSHOT  
Business-0.1-SNAPSHOT which depends on DB-0.1-SNAPSHOT  
Web-0.1-SNAPSHOT which depends on Business-0.1-SNAPSHOT  

release：prepare ，所有版本均更新为0.1，但是prepare失败，因为还没有依赖关系的 DB-0.1 。

When doing release:prepare, all versions updated to 0.1, but prepare fails because there is no DB-0.1 in dependency yet.

一种解决方案是为每个模块创建不同的项目，然后使用 versions：use-releases 插件将依赖关系更新为0.1

One solution is to create different projects for every module and release them one by one while using versions:use-releases plugin to update dependency to 0.1

但是我不喜欢这个想法，因为它需要大量的配置和脚本编写。因此，我更喜欢使用聚合并通过单个命令发布所有模块，但是问题是，正如我在上文中所述，当发布插件尝试构建 Business-0.1 时， DB-0.1 还在存储库中。

But I do not like this idea because it requires a lot of configuration and scripting. So, I prefer to use aggregation and release all modules with single command, but the problem is, as I wrote above, when release plugin tries to build Business-0.1 there is no DB-0.1 in repository yet.

有什么方法可以管理这些项目间的依赖关系？

Is there any way to manage these inter-project dependencies?

谢谢。

UPD：

即使安装目标失败。

1. 数据库构建-确定（没有快照或发行版本在任何存储库中）


2. 业务-失败（在存储库中未找到DB-0.1-SNAPSHOT。但是它甚至还不应该存在！）

我正在使用maven 3.0.2和发行插件2.1

I'm using maven 3.0.2 and release plugin 2.1

推荐答案

您的项目只能在父级（项目）中定义一次版本。并让所有其他模块具有父级关系。这意味着您没有汇总。而是使用多模块构建。

your project should define the version only in the parent (project) only once. And let all other modules have a parent relationship. This means you don't have a aggregation. You have a multimodule build instead.

Project  
|-pom.xml (version 0.1-SNAPSHOT)
|-DB  
| |-pom.xml (parent: ..)
|-Business  
| |-pom.xml (parent:..)

这将解决您的问题（也许您可以以此处为例）。

This will solve your problem (May be you can take a look here as an example).

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