Idea maven编译报错 javacTask: 源发行版 1.8 需要目标发行版 1.8

javacTask: 源发行版 1.8 需要目标发行版 1.8
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] An unknown compilation problem occurred
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.409 s
[INFO] Finished at: 2019-04-16T15:27:55+08:00
[INFO] Final Memory: 7M/20M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project scala-bi-server: Compilation failure
[ERROR] An unknown compilation problem occurred
[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

Process finished with exit code 1

在pom.xml 加入编译插件

	<plugins>
		<!--compiler插件-->
		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-compiler-plugin</artifactId>
			<version>3.3</version>
			<configuration>
				<source>1.8</source>
				<target>1.8</target>
				<encoding>${file.encoding}</encoding>
			</configuration>
		</plugin>
	</plugins>