前言

在Eclipse中使用maven打jar包，遇到异常报错

右击项目 — Run As — Maven install

或者，右击项目 — Run As — Maven build....

报错日志

问题1： No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

[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: 1.611 s
[INFO] Finished at: 2019-08-26T16:38:43+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project df-nlp: 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

解决方案

根据异常提示显示是JDK的问题，下面几种解决的办法：

方案一

解决方法（1）：检查Eclipse是否配置好JDK，Window —- Preferences —- Java —- Installed JREs

如果没有配置的话，就点右侧的 Add...

注意：Eclipse添加完JDK后，别忘记选择刚添加的JDK就行！！

找的JDK的安装路径

方案二

解决方法（2）：先检查电脑本地的环境变量是否配置成功，就是所谓的JAVA_HOME、Path

JDK的安装及配置如下：
JAVA_HOME (JDK安装的路径) ： C:\Program Files\Java\jdk1.8.0_201
Path（注意最后面的英文格式分号）： %JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;
CLASSPATH（注意最前面有一点）： .;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar

然后在Eclipse上操作：
右击项目 —- Build Path —- Configure Build Path... —- Java Build Path —- Libraries —- 选中JRE System Library —- Edit —- Workspace default JRE —- 结束

方案三

解决方法（3）：修改pom.xml文件
在pom文件中添加一个plugin配置,然后再update下就可以了，前提电脑本地得配置好JDK的环境变量

<build>
    <plugins>
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
                <fork>true</fork>
                <executable>${JAVA_HOME}/bin/javac</executable>
            </configuration>
        </plugin>
    </plugins>
</build>