Maven不能编译java 1.8 [英] Maven can't compile java 1.8
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问题描述
ERROR]无法执行目标org.apache.maven.plugins：maven-compiler-plugin：3.1：在项目上编译
（default-compile）应用程序：致命错误编译：无效的目标版本：1.8 - > [帮助1]
[ERROR]
[ERROR]要查看错误的完整堆栈跟踪，请使用-e开关重新运行Maven。
[ERROR]使用-X开关重新运行Maven以启用完整的调试日志记录。
[ERROR]
[ERROR]有关错误和可能的解决方案的更多信息，请阅读以下文章：
[错误] [帮助1] http://cwiki.apache.org / confluence / display / MAVEN / MojoExecutionException
mvn -v输出
mvn -version
Apache Maven 3.2.5（12a6b3acb947671f09b81f49094c53f426d8cea1; 2014-12-14T09：29：23-08：00）
Maven首页：/usr/local/Cellar/maven/3.2.5/libexec
Java版本：1.6.0_65，供应商：Apple Inc.
Java主页：/System/Library/Java/JavaVirtualMachines/1.6.0 .jdk / Contents / Home
默认语言环境：en_US，平台编码：MacRoman
操作系统名称：mac os x，版本：10.10.1，arch：x86_64，family：mac
所以看起来它指向1.6jdk
但我有1.8 jdk
java -version
java -version
java版本1.8.0_25
Java（TM）SE运行时环境（build 1.8.0_25-b17）
Java HotSpot（TM）64位服务器虚拟机（构建25.25-b02，混合模式）
POM.xml
< project xmlns =http://maven.apache.org/POM/4.0.0xmlns ：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.brian.ridecellchallenge< / groupId>
< artifactId>应用程序< / artifactId>
< version> 0.0.1-SNAPSHOT< / version>
< build>
< sourceDirectory> src< / sourceDirectory>
< plugins>
< plugin>
< artifactId> maven-compiler-plugin< / artifactId>
< version> 3.1< / version>
< configuration>
< source> 1.8< / source>
< target> 1.8< / target>
< / configuration>
< / plugin>
< plugin>
< groupId> org.apache.maven.plugins< / groupId>
< artifactId> maven-shade-plugin< / artifactId>
< version> 1.6< / version>
<执行>
< execution>
< phase> package< / phase>
< goals>
< goal> shade< / goal>
< / goals>
< configuration>
<变压器>
< transformer
implementation =org.apache.maven.plugins.shade.resource.ManifestResourceTransformer>
< mainClass> com.group.id.Launcher1< / mainClass>
< / transformer>
< / transformers>
< / configuration>
< / execution>
< / executions>
< / plugin>
< / plugins>
< / build>
<依赖关系>
<依赖关系>
< groupId> junit< / groupId>
< artifactId> junit< / artifactId>
< version> 4.12< / version>
< scope> test< / scope>
< / dependency>
<依赖关系>
< groupId> commons-io< / groupId>
< artifactId> commons-io< / artifactId>
< version> 2.4< / version>
< / dependency>
<依赖关系>
< groupId> joda-time< / groupId>
< artifactId> joda-time< / artifactId>
< version> 2.6< / version>
< / dependency>
< / dependencies>
< / project>
解决方案
Maven依赖于设置的JAVA_HOME环境变量。根据您的操作系统进行设置并重新运行构建。
编辑：
使用导出设置变量。
export JAVA_HOME = / path / to / java
I'm trying to use maven to build a jar but I keep getting the error
ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile
(default-compile) on project Application: Fatal error compiling: invalid target release: 1.8 -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
mvn -v outputs
mvn -version
Apache Maven 3.2.5 (12a6b3acb947671f09b81f49094c53f426d8cea1; 2014-12-14T09:29:23-08:00)
Maven home: /usr/local/Cellar/maven/3.2.5/libexec
Java version: 1.6.0_65, vendor: Apple Inc.
Java home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Default locale: en_US, platform encoding: MacRoman
OS name: "mac os x", version: "10.10.1", arch: "x86_64", family: "mac"
So it looks like its pointing to the 1.6jdk
but I have the 1.8 jdk
java -version
java -version
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)
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.brian.ridecellchallenge</groupId>
<artifactId>Application</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.6</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>com.group.id.Launcher1</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.6</version>
</dependency>
</dependencies>
</project>
解决方案
Maven relies on the JAVA_HOME environment variable being set. Set it according to your OS and re-run your build.
Edit: Use export to set the variable.
export JAVA_HOME=/path/to/java
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