1、新建Maven工程
File->New->Project->Maven->Next
Name:SimpleApp,如下所示:
2、修改pom.xml配置文件,如下所示:
<?xml version="1.0" encoding="UTF-8"?>
<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.example</groupId>
<artifactId>SimpleApp</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-core_2.12</artifactId>
<version>3.0.0-preview2</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-sql_2.12</artifactId>
<version>3.0.0-preview2</version>
</dependency>
</dependencies>
</project>
3、激活自動導入
在右下角自動彈出的對話框中選擇“Enable Auto-Import”,如下所示:
4、添加框架支持
在項目名稱上單擊右鍵,在彈出的對話框中選擇“Add Framework Support”,如下所示:
在彈出的對話框左側選擇“Scala”,右側選擇“scala-sdk-2.12.10”,如下所示:
注意:IDEA需要提前安裝Scala,參考Scala官方文檔:https://docs.scala-lang.org/getting-started/intellij-track/getting-started-with-scala-in-intellij.html
5、生成package,如下所示:
在彈出的對話框中輸入“com.example”,如下所示:
6、生成Scala類,如下所示:
在彈出的對話框中輸入“SimpleApp”,如下所示:
7、添加SimpleApp類內容,如下所示:
參考Spark官方文檔:http://spark.apache.org/docs/latest/quick-start.html#self-contained-applications
package com.example
/* SimpleApp.scala */
import org.apache.spark.sql.SparkSession
object SimpleApp {
def main(args: Array[String]) {
// val logFile = "YOUR_SPARK_HOME/README.md"
// Should be some file on your system
val logFile = "./src/main/resources/data.txt"
val spark = SparkSession.builder.appName("Simple Application").getOrCreate()
val logData = spark.read.textFile(logFile).cache()
val numAs = logData.filter(line => line.contains("a")).count()
val numBs = logData.filter(line => line.contains("b")).count()
println(s"Lines with a: $numAs, Lines with b: $numBs")
spark.stop()
}
}
8、添加SimpleApp/src/main/resources/data.txt,如下所示:
hello world
hello spark
hello baby
9、配置運行環境
Run->Edit Configurations->Application,如下所示:
注意:VM options : -Dspark.master=local
10、啓動Spark服務,如下所示:
11、運行服務
在SimpleApp.scala類上單擊右鍵,在彈出的對話框中選擇“Run ‘SimpleApp’”,如下所示:
12、運行結果,如下所示: