java 无法在项目上执行目标 org.apache.maven.plugins:maven-compiler-plugin:3.5.1:compile (default-compile)
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Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.5.1:compile (default-compile) on project
提问by Farzan Ali Shaikh
I had a java project which I reconfigured to a Maven project. After reconfiguring and adding most of the dependencies required, I get the following error in console when I run mvn installcommand. I tried the solution mentioned here on this issue, but it doesnt help
我有一个 java 项目，我将其重新配置为 Maven 项目。重新配置并添加所需的大部分依赖项后，我在运行mvn install命令时在控制台中收到以下错误。我在这个问题上尝试了这里提到的解决方案，但它没有帮助
Following are the console logs:
以下是控制台日志：
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building FlockHydraAutomation 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ FlockHydraAutomation ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 2 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.5.1:compile (default-compile) @ FlockHydraAutomation ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 15 source files to C:\Maven\FlockHydra-Automation\FlockHydraAutomation\target\classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.249 s
[INFO] Finished at: 2017-09-23T13:44:15+05:30
[INFO] Final Memory: 10M/220M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.5.1:compile (default-compile) on project FlockHydraAutomation: Compilation failure
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[ERROR] -> [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/MojoFailureException
POM File:
POM文件：
<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.Flock</groupId>
<artifactId>FlockHydraAutomation</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>FlockHydraAutomation</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<sourceDirectory>flockWebclient</sourceDirectory>
<resources>
<resource>
<directory>resources</directory>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
Attached is the screenshot of the Java Compiler: Java Compiler
附上Java编译器截图： Java Compiler
回答by ranjithkr
Based on your comment on the previous answer looks like you are indeed pointing to a JDK. So now can you try this, Open Eclipse and goto Windows-> preferences -> Java -> installed JREs, and check if you are pointing to a JRE. If yes, change the path to your JDK and try to run a Maven build again. Hopefully this helps resolve the issue.
根据您对上一个答案的评论，您似乎确实在指向 JDK。所以现在你可以试试这个，打开 Eclipse 并转到 Windows-> 首选项 -> Java -> 已安装的 JRE，然后检查您是否指向 JRE。如果是，请更改 JDK 的路径并尝试再次运行 Maven 构建。希望这有助于解决问题。
回答by SilverNak
You have to make sure, your JAVA_HOMEenvironment variable points to a JDK (not a JRE), as the error mentions.
JAVA_HOME正如错误所述，您必须确保您的环境变量指向 JDK（而不是 JRE）。
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[错误] 此环境中未提供编译器。也许您在 JRE 而不是 JDK 上运行？
Execute mvn -version. The output will show, what directory JAVA_HOME point to. Then make sure, this is a JDK by setting the JAVA_HOMEvariable to a JDK path.
执行mvn -version。输出将显示 JAVA_HOME 指向的目录。然后通过将JAVA_HOME变量设置为 JDK 路径来确保这是一个 JDK 。
回答by raphaeljuwe
I had the same issue, followed the recommendations stated above, but the issued persist.
我遇到了同样的问题，遵循了上述建议，但问题仍然存在。
below was my pom.xml
下面是我的 pom.xml
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.4</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<fork>true</fork>
<executable>C:\Program Files\Java\jdk\bin\javac</executable>
</configuration>
<executions>
<execution>
<id>tomcat-run</id>
<goals>
<goal>exec-war-only</goal>
</goals>
<phase>package</phase>
<configuration>
<path>/</path>
<attachartifactclassifier>exec-war</attachartifactclassifier>
<attachartifactclassifiertype>jar</attachartifactclassifiertype>
</configuration>
</execution>
<execution>
<goals>
<goal>spring-boot:run</goal>
</goals>
</plugin>
</plugins>
To fix the issue, do use this pom.xml
要解决此问题，请使用此 pom.xml
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
Attached is the snapshot of my IDE .
附件是我的 IDE 的快照。
回答by gscott4
I was having the same error and it turned out to be an issue with the .classpath file for me:
我遇到了同样的错误，结果证明是 .classpath 文件的问题：
<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
<attributes>
<attribute name="maven.pomderived" value="true"/>
<attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
</attributes>
</classpathentry>
The attribute pointing to the "/WEB-INF/lib" folder was missing in my case.
在我的情况下，指向“/WEB-INF/lib”文件夹的属性丢失。
