使用maven构建助手maven插件

Question

我试图使用maven插件为maven java项目添加一个源文件夹到Eclipse。

从http://mojo.codehaus.org/build-helper-maven-plugin/usage.html上的文档来看，这应该是正确的吧？文件夹target/sources/mygeneratedfiles存在。

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>build-helper-maven-plugin</artifactId>
    <executions>
        <execution>
         <id>add-source</id>
            <phase>generate-sources</phase>
            <goals>
                <goal>add-source</goal>
            </goals>
            <configuration>
                <sources>
                    <source>target/sources/mygeneratedfiles</source>
                </sources>
            </configuration>
        </execution>
    </executions>
</plugin>

Answer 1

问题是build helper插件通常太老了，不能与最新的maven版本（与m2e eclipse插件结合使用）一起使用，因为“相对较新”的生命周期映射规则。

我通过为orgeclipse.m2e plugib的build-helper-maven-plugin添加一个lifecyclemapping配置来解决这个问题。见下文：

        <plugin>
            <groupId>org.eclipse.m2e</groupId>
            <artifactId>lifecycle-mapping</artifactId>
            <version>1.0.0</version>
            <configuration>
                <lifecycleMappingMetadata>
                    <pluginExecutions>
                        <pluginExecution>
                            <pluginExecutionFilter>
                                <groupId>org.codehaus.mojo</groupId>
                                <artifactId>build-helper-maven-plugin</artifactId>
                                <versionRange>[1.0,)</versionRange>
                                <goals>
                                    <goal>add-source</goal>
                                    <goal>add-test-source</goal>
                                    <goal>add-resource</goal>
                                    <goal>add-test-resource</goal>
                                    <goal>maven-version</goal>
                                    <goal>parse-version</goal>
                                </goals>
                            </pluginExecutionFilter>
                            <action>
                                <execute>
                                    <runOnConfiguration>true</runOnConfiguration>
                                    <runOnIncremental>true</runOnIncremental>
                                </execute>
                            </action>
                        </pluginExecution>
                    </pluginExecutions>
                </lifecycleMappingMetadata>
            </configuration>
        </plugin>