spark本地开发环境搭建及打包配置

在idea中新建工程

删除新项目的src,创建moudle

在父pom中添加spark和scala依赖,我们项目中用scala开发模型，建议scala，开发体验会更好（java、python也可以）

<?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.shaozhiqi.bigdata</groupId>
    <artifactId>spark-demo01</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>spark-core</module>
    </modules>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <scala.version>2.11.7</scala.version>
        <spark.version>2.4.3</spark.version>
        <encoding>UTF-8</encoding>
    </properties>
    <dependencies>

        <dependency>
            <groupId>org.scala-lang</groupId>
            <artifactId>scala-library</artifactId>
            <version>${scala.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.spark</groupId>
            <artifactId>spark-core_2.11</artifactId>
            <version>${spark.version}</version>
        </dependency>
    </dependencies>

</project>

在我们Moudle中配置打包插件

<?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">
    <parent>
        <artifactId>spark-demo01</artifactId>
        <groupId>com.shaozhiqi.bigdata</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>spark-core</artifactId>

    <build>
        <pluginManagement>
            <plugins>
                <!-- 编译scala的插件 -->
                <plugin>
                    <groupId>net.alchim31.maven</groupId>
                    <artifactId>scala-maven-plugin</artifactId>
                    <version>3.2.2</version>
                </plugin>
            </plugins>
        </pluginManagement>
        <plugins>
            <plugin>
                <groupId>net.alchim31.maven</groupId>
                <artifactId>scala-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <id>scala-compile-first</id>
                        <phase>process-resources</phase>
                        <goals>
                            <goal>add-source</goal>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>scala-test-compile</id>
                        <phase>process-test-resources</phase>
                        <goals>
                            <goal>testCompile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>compile</phase>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <!-- 打包插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>3.2.1</version>
                <configuration>
                    <transformers>
                        <!-- add Main-Class to manifest file -->
                        <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                            <!--you can add you want to need   the main class--><!---->
                            <mainClass>com.shaozhiqi.bigdata.spark.WordCount</mainClass>
                        </transformer>
                    </transformers>
                    <createDependencyReducedPom>false</createDependencyReducedPom>
                </configuration>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <filters>
                                <filter>
                                    <artifact>*:*</artifact>
                                    <excludes>
                                        <exclude>META-INF/*.SF</exclude>
                                        <exclude>META-INF/*.DSA</exclude>
                                        <exclude>META-INF/*.RSA</exclude>
                                    </excludes>
                                </filter>
                            </filters>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

安装scala开发插件到idea

安装后重启

设置scalasdk,选我们新建的moudle

image.png

新建scala对象

编写代码：

 def main(args: Array[String]): Unit = {
    //1.创建配置信息
    val conf =new SparkConf().setAppName("wordcount").setMaster("local[*]")
    //2.创建sparkcontext
    val sc= new SparkContext(conf)
    //3.处理业务数据，我们统计每个单词的个数
    // 我们要在集群上尝试所以就将textFile的参数参数化，如果在本地执行则写本地的绝对路径
    val lines=sc.textFile("G:\\temp\\input.txt")
    val words=lines.flatMap(_.split(" "))
    val keyMap=words.map((_, 1))
    val result =keyMap.reduceByKey(_+_)
    result.foreach(println)
    //4.关闭连接
    sc.stop()
  }

本地调测试

(1233,1)
(llll,1)
(hhh,1)
(ddd,2)
(55,2)
(,1)
(kkkk,1)
(jjj,1)