一、修改 Directory的颜色
1.1、单击工作空间
1.2 、选中 Open Module Setting,双击进入
1.3、找到要改颜色的包,然后再在上方选择颜色
二、只有导入pom文件之后,idea才能建scala class
pom文件
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>2.11.8</version> <!--2.11.x版本的都可以-->
</dependency>
</dependencies>
<build>
<finalName>WordCount</finalName> <!--idea当前工作空间的名称-->
<plugins>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>3.2.2</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<archive>
<manifest>
<mainClass>WordCount</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef> <!--用mave中的package打包的时候会打一个没有依赖的包和一个有pom依赖的包,有依赖的那个包内存大-->
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>