Maven 在被聚合器 pom 调用时无法读取子模块的资源

Question

我有几个模块运行"mvn clean install"，并且必须保持它们的顺序。为了让我的生活更轻松，不必改变TFS或任何东西，我想创建项目聚合器，它将拥有我所有的sub-modules，而他们对这个aggregator一无所知。 我的项目结构：

projectaggregator
|
+- submodule1
|
+- submodule2

聚合器/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.my.package</groupId>
<artifactId>projectaggregator</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<name>Project Aggregator</name>
<modules>
<module>../submodule1</module>
<!--<module>../submodule2</module>-->       
</modules>
</project>

并且构建失败并显示以下错误：

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] submodule1
[INFO] Project Aggregator
[INFO] 
[INFO] Using the MultiThreadedBuilder implementation with a thread count of 8
[INFO]                                                                         
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Building Project Aggregator 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] Building submodule1 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- swagger-codegen-maven-plugin:2.3.1:generate (default) @ submodule1 ---
[INFO] reading from src/main/resources/yaml/decision.yaml
[INFO] reading from src/main/resources/yaml/decision.yaml
[ERROR] failed to read resource listing
java.io.FileNotFoundException: srcmainresourcesyamldecision.yaml (The system cannot find the path specified)
at java.io.FileInputStream.open0(Native Method)
...
[INFO] No .swagger-codegen-ignore file found.
[ERROR] java.lang.RuntimeException: missing swagger input or config! 
...
[INFO] --------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] submodule1 ....................................... FAILURE [  3.983 s]
[INFO] Project Aggregator ............................... SUCCESS [  0.003 s]
[INFO] --------------------------------------------------------------------
[INFO] BUILD FAILURE

子模块1/POM.xml：

...
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>io.swagger</groupId>
<artifactId>swagger-codegen-maven-plugin</artifactId>
<version>2.3.1</version>
</dependency>
...

显然，submodule1无法找到资源，因为我们正在通过aggregator运行submodule1。 有没有办法在不修改 pom 文件的情况下解析对资源的relative pathsubmodule1？

Answer 1

在使用 swagger 执行多模块构建时，我遇到了同样的问题。显然，在查看资源路径时，大摇大摆的插件存在限制。 我们可以通过在 swagger 插件配置中使用 maven 变量来解决此问题${project.basedir}：

<plugin>
<groupId>io.swagger</groupId>
<artifactId>swagger-codegen-maven-plugin</artifactId>
<version>2.2.1</version>
<executions><execution>
<goals><goal>generate</goal></goals>
<phase>generate-sources</phase>
<configuration>
<inputSpec>${project.basedir}/src/main/resources/yaml/decision.yaml</inputSpec>
</configuration>
</execution></executions>
</plugin>

从这里引用 - https://github.com/swagger-api/swagger-codegen/issues/3583