致命错误,编译时无效标志--module-path [英] fatal error compiling invalid flag --module-path
问题描述
我有一个项目.最初是一个具有这样结构的单模块项目
I have a project. Originally it was a single module project with structure like this
java-cloud-sample\
src\
main\
java
pom.xml
我决定将其制成多模块结构-无论如何,我都使用java 9
.
所以我就这样分开了
I decided to make it into a multi-module structure - I use java 9
anyway.
So I separated it like this
java-cloud-sample\
java-cloud-rest-api\
src\
pom.xml
pom.xml
根pom.xml
如下所示
<?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.lapots.breed.platform.cloud</groupId>
<artifactId>java-cloud-sample</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<modules>
<module>java-cloud-rest-api</module>
</modules>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.6.RELEASE</version>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<maven.compiler.source>1.9</maven.compiler.source>
<maven.compiler.target>1.9</maven.compiler.target>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.2</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>3.0.1</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals><goal>copy-dependencies</goal></goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
模块pom.xml
看起来像这样
<?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>
<parent>
<groupId>com.lapots.breed.platform.cloud</groupId>
<artifactId>java-cloud-sample</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>java-cloud-rest-api</artifactId>
<description>Demo project for Spring Boot</description>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>build-info</goal>
</goals>
<configuration>
<additionalProperties>
<encoding.source>${project.build.sourceEncoding}</encoding.source>
<encoding.reporting>${project.reporting.outputEncoding}</encoding.reporting>
<java.source>${maven.compiler.source}</java.source>
<java.target>${maven.compiler.target}</java.target>
</additionalProperties>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
但是当我尝试运行mvn clean package
时,我会得到
But when I try to run mvn clean package
I get
INFO] java-cloud-rest-api ................................ FAILURE [ 1.060 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.104 s
[INFO] Finished at: 2017-09-08T17:15:46+03:00
[INFO] Final Memory: 27M/331M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.6.2:compile (default-compile) on project java-cloud-rest-api: Fatal error compiling: invalid flag: --module-path -> [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
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <goals> -rf :java-cloud-rest-api
出什么问题了? (也许我应该将maven
项目拆分为单独的模块,并将每个maven模块拆分为java
模块)
What is the problem? (maybe I should split maven
project into separate modules and each maven module split into java
modules)
推荐答案
当 maven 已配置为 java8 作为默认的Java版本.您可以通过执行
This failure occurs when maven installed on your machine is configured with java8 as the default java version. You can confirm this by executing
mvn -version
在您的终端上,并检查配置中所述的 Java版本.
on your terminal and checking the Java version stated in the configuration.
要将版本解析为较新的受支持的版本,例如 java9 目前,您可以在计算机上创建/编辑mavenrc
(在MacOS上)文件:
To resolve the version to a newer and supported version like java9 at the moment, you can create/edit the mavenrc
(on MacOS) file on your machine:
vi ~/.mavenrc
包括这些
export PATH
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home/
export PATH=${PATH}:$JAVA_HOME/bin
保存此配置后,您可以使用相同的命令确认maven应该使用Java版本9,然后您的项目就可以构建而不会出现所述错误.
Once you save this configuration, you can confirm maven should be using Java version 9 using the same command and then your project shall build without the stated error.
这篇关于致命错误,编译时无效标志--module-path的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!