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我正在嘗試構建一個maven multimodule項目，我希望在java 8上構建兩個模塊，其中一個構建在java上7maven多模塊項目，用不同的java版本編譯模塊之一
編輯：我也看了this SO question
所以，我想在Maven and Java multi-version modules
提供的解決方案，所以我的父POM看起來像
<?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.example</groupId>
<artifactId>parent</artifactId>
<name>parent</name>
<version>1.0.0-SNAPSHOT</version>
<description>Parent pom </description>
<packaging>pom</packaging>
<properties>
<aspectj.version>1.8.5</aspectj.version>
<jackson.version>2.4.0</jackson.version>
<java.version>1.8</java.version>
<java.source.version>${java.version}</java.source.version>
<java.target.version>${java.version}</java.target.version>
<jdk.version>8</jdk.version>
<jdk>${env.JAVA_HOME_8}</jdk>
<jersey.version>2.9</jersey.version>
<groovy.version>2.4.3</groovy.version>
<slf4j.version>1.7.9</slf4j.version>
<spock.version>1.0-groovy-2.4</spock.version>
<spring.boot.version>1.3.5.RELEASE</spring.boot.version>
<spring.version>4.2.6.RELEASE</spring.version>
<spring.security.version>3.1.7.RELEASE</spring.security.version>
<spring.data.version>1.7.0.RELEASE</spring.data.version>
</properties>
<dependencyManagement>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.18.1</version>
<executions>
<execution>
<id>unit-tests</id>
<goals>
<goal>test</goal>
</goals>
<phase>test</phase>
<configuration>
<includes>
<include>**/*Test.*</include>
<include>**/*Spec.*</include>
</includes>
<excludes>
<exclude>**/*IntegrationTest.*</exclude>
</excludes>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>2.5</version>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.7</version>
<executions>
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>src/main/groovy</source>
</sources>
</configuration>
</execution>
<execution>
<id>add-test-source</id>
<phase>generate-test-sources</phase>
<goals>
<goal>add-test-source</goal>
</goals>
<configuration>
<sources>
<source>src/test/groovy</source>
<source>src/test/java</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<compilerId>groovy-eclipse-compiler</compilerId>
<source>${java.source.version}</source>
<target>${java.target.version}</target>
<showDeprecation>true</showDeprecation>
<showWarnings>true</showWarnings>
<verbose>true</verbose>
<executable>${jdk}/bin/javac</executable>
<fork>true</fork>
</configuration>
<dependencies>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-eclipse-compiler</artifactId>
<version>2.9.2-01</version>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-eclipse-batch</artifactId>
<version>2.4.3-01</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>cobertura-maven-plugin</artifactId>
<version>2.7</version>
<configuration>
<formats>
<format>html</format>
<format>xml</format>
</formats>
<outputDirectory>${project.build.directory}/surefire-reports/cobertura</outputDirectory>
<instrumentation>
<ignoreTrivial>true</ignoreTrivial>
<ignores>
<ignore>org.slf4j.Logger.*</ignore>
</ignores>
<excludes>
<exclude>**/Application.class</exclude>
<exclude>**/ApplicationConfig.class</exclude>
<exclude>**/JerseyConfig.class</exclude>
</excludes>
</instrumentation>
<check />
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>cobertura</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<modules>
<module>model</module>
<module>persistence</module>
<module>service</module>
</modules>
</project>
和模塊的POM樣子：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>model</artifactId>
<name>model</name>
<description>Model forservices</description>
<packaging>jar</packaging>
<parent>
<artifactId>parent</artifactId>
<groupId>com.example</groupId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<properties>
<java.version>1.7</java.version>
<java.source.version>${java.version}</java.source.version>
<java.target.version>${java.version}</java.target.version>
<jdk.version>7</jdk.version>
<jdk>${env.JAVA_HOME_7}</jdk>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.raml.plugins</groupId>
<artifactId>raml-jaxrs-maven-plugin</artifactId>
<version>1.3.3</version>
<configuration>
<jaxrsVersion>2.0</jaxrsVersion>
<jsonMapper>jackson2</jsonMapper>
<jsonMapperConfiguration>
<generateBuilders>true</generateBuilders>
<includeHashcodeAndEquals>true</includeHashcodeAndEquals>
<includeToStringuseLongIntegers>true</includeToStringuseLongIntegers>
</jsonMapperConfiguration>
</configuration>
<executions>
<execution>
<id>generate-model</id>
<goals>
<goal>generate</goal>
</goals>
<phase>generate-sources</phase>
<configuration>
<sourcePaths>
<sourcePath>${basedir}/src/main/raml/services.raml</sourcePath>
</sourcePaths>
<basePackageName>com.example.app</basePackageName>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
但是在編譯我收到以下錯誤：
[INFO] Found location </Users/someuser/.m2/repository/org/codehaus/groovy/groovy-eclipse-batch/2.4.3-01/groovy-eclipse-batch-2.4.3-01.jar> for className <org.eclipse.jdt.internal.compiler.batch.Main>
[INFO] no javaAgentClass seems to be set
[INFO] Compiling in a forked process using /Users/someuser/.m2/repository/org/codehaus/groovy/groovy-eclipse-batch/2.4.3-01/groovy-eclipse-batch-2.4.3-01.jar
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] Failure executing groovy-eclipse compiler:
javac: invalid flag: -jar
Usage: javac <options> <source files>
use -help for a list of possible options
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.687s
[INFO] Finished at: Thu May 26 10:04:15 EDT 2016
[INFO] Final Memory: 21M/320M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project model: Compilation failure
[ERROR] Failure executing groovy-eclipse compiler:
[ERROR] javac: invalid flag: -jar
[ERROR] Usage: javac <options> <source files>
[ERROR] use -help for a list of possible options
編輯::
因此，基於A.迪馬特奧回答我嘗試
- 從maven-compiler-plugin的config部分刪除fork和可執行選項
- 設置源和目標版本1.7我的模塊上需要一個不同版本的Java
的它成功生成。但是當我讀取構建清單時，它說Build-Jdk：1.8.0_40。那麼，是什麼意思
Manifest-Version: 1.0
Implementation-Title: model
Build-Date: 2016-05-26 10:44:16
Implementation-Version: 1.0.0-SNAPSHOT
Archiver-Version: Plexus Archiver
Built-By:
Specification-Vendor: my org
Repo-Name: model
Specification-Title: model
Implementation-Vendor-Id: com.org
Git-Hash: xxx
Implementation-Vendor: my org
App-Name: model
Version-Number: 1.0.0-SNAPSHOT
Created-By: Apache Maven 3.0.5
Build-Jdk: 1.8.0_40
Specification-Version: 1.0.0-SNAPSHOT
「invalid flag：-jar」和不能切換javac版本之間的關係是什麼？這聽起來像是一個不同的錯誤。你怎麼知道Java 8仍然在使用？ – Tunaki
@Tunaki所以我只是報告我收到的錯誤，我不知道這個關係是什麼 –
「Build-JDK」是用於編譯的JDK，而不是它編譯的目標版本，所以你不要擔心這一點，它與你使用的是一致的。請按照下面的註釋中的解釋使用'javap'工具進行檢查。 –