在IDEA中启动spark项目的操作

第一步:
在pom文件中
换成

<properties><scala.version>2.12.12scala.version><maven.compiler.source>1.8maven.compiler.source><maven.compiler.target>1.8maven.compiler.target><encoding>UTF-8encoding><spark.version>3.0.1spark.version>properties>


<dependency><groupId>org.scala-langgroupId><artifactId>scala-libraryartifactId><version>${scala.version}version>dependency><dependency><groupId>junitgroupId><artifactId>junitartifactId><version>4.4version><scope>testscope>dependency><dependency><groupId>org.specsgroupId><artifactId>specsartifactId><version>1.2.5version><scope>testscope>dependency><dependency><groupId>org.apache.sparkgroupId><artifactId>spark-core_2.12artifactId><version>3.0.1version>dependency><dependency><groupId>org.apache.sparkgroupId><artifactId>spark-sql_2.12artifactId><version>3.0.1version>
dependency>




<dependency><groupId>org.scalanlpgroupId><artifactId>breeze_2.12artifactId><version>1.1version>dependency><dependency><groupId>org.apache.hadoopgroupId><artifactId>hadoop-clientartifactId><version>2.7.4version>dependency><dependency><groupId>org.apache.hbasegroupId><artifactId>hbase-clientartifactId><version>1.3.1version>dependency><dependency><groupId>org.apache.hbasegroupId><artifactId>hbase-serverartifactId><version>1.3.1version>dependency><dependency><groupId>com.typesafegroupId><artifactId>configartifactId><version>1.3.3version>dependency><dependency><groupId>mysqlgroupId><artifactId>mysql-connector-javaartifactId><version>5.1.38version>dependency><dependency><groupId>org.apache.sparkgroupId><artifactId>spark-mllib_2.12artifactId><version>3.0.1version>
dependency><dependency><groupId>org.apache.sparkgroupId><artifactId>spark-streaming_2.12artifactId><version>3.0.1version>
dependency><dependency><groupId>com.github.scoptgroupId><artifactId>scopt_2.12artifactId><version>3.5.0version>dependency>


然后App改内容
/**

• Hello world!

*/
object Main extends App {
println( “Hello World!” )
}

最后添加配置
先这样

然后这样

接着这样