pom

<?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>org.zxl</groupId><artifactId>SparkDemo1</artifactId><version>1.0-SNAPSHOT</version><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><spark.version>3.1.1</spark.version><spark.scala.version>2.12</spark.scala.version></properties><dependencies><dependency><groupId>org.apache.spark</groupId><artifactId>spark-core_${spark.scala.version}</artifactId><version>${spark.version}</version></dependency><dependency><groupId>org.apache.spark</groupId><artifactId>spark-sql_${spark.scala.version}</artifactId><version>${spark.version}</version></dependency><!--看yarn源碼--><dependency><groupId>org.apache.spark</groupId><artifactId>spark-yarn_${spark.scala.version}</artifactId><version>${spark.version}</version></dependency><!--<dependency><groupId>org.apache.hadoop</groupId><artifactId>hadoop-hdfs-client</artifactId><version>3.0.0</version></dependency><dependency><groupId>org.apache.spark</groupId><artifactId>spark-streaming_${spark.scala.version}</artifactId><version>${spark.version}</version></dependency>--><!--<dependency><groupId>org.apache.spark</groupId><artifactId>spark-streaming-kafka-0-10_2.11</artifactId><version>2.4.4</version></dependency>--><!--<dependency><groupId>org.apache.spark</groupId><artifactId>spark-hive_${spark.scala.version}</artifactId><version>${spark.version}</version></dependency>--><!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --><!--<dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.48</version></dependency>--><!--和其他框架整合使用時(shí)有可能報(bào)錯(cuò)compiler--><!--<dependency><groupId>org.codehaus.janino</groupId><artifactId>commons-compiler</artifactId><version>3.1.0</version></dependency>--></dependencies><build><plugins><!-- 該插件用于將 Scala 代碼編譯成 class 文件 --><plugin><groupId>net.alchim31.maven</groupId><artifactId>scala-maven-plugin</artifactId><version>3.2.2</version><executions><execution><!-- 聲明綁定到 maven 的 compile 階段 --><goals><goal>testCompile</goal></goals></execution></executions></plugin><!--maven打包的插件--><!--maven-assembly-plugin 和 maven-shade-plugin都是打包插件。遇到同名文件assembly是覆蓋，shade是追加。所以此處選擇shade插件--><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-shade-plugin</artifactId><version>3.2.1</version><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><transformers><transformerimplementation="org.apache.maven.plugins.shade.resource.AppendingTransformer"><resource>reference.conf</resource></transformer><!--指定main方法--><transformerimplementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"><mainClass>com.zxl.spark.L01_WordCount</mainClass></transformer></transformers></configuration></execution></executions></plugin><!--<plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-assembly-plugin</artifactId><version>3.1.1</version><configuration><descriptorRefs><descriptorRef>jar-with-dependencies</descriptorRef></descriptorRefs></configuration><executions><execution><id>make-assembly</id><phase>package</phase><goals><goal>single</goal></goals></execution></executions></plugin>--></plugins></build></project>

data

{"name":"zhangsan0","age":20} {"name":"zhangsan1","age":21} {"name":"zhangsan2","age":22} {"name":"zhangsan3","age":23} {"name":"zhangsan4","age":24}

code

package com.zxl.spark.sqlimport org.apache.spark.sql.catalog.{Database, Table} import org.apache.spark.{SparkConf, SparkContext} import org.apache.spark.sql.{DataFrame, Dataset, SparkSession, catalog}object lesson01_sql_basic {def main(args: Array[String]): Unit = {// sql字符串 ==》 dataset 是對rdd的包裝// 只有rdd才能觸發(fā)DAGSchedulerval conf: SparkConf = new SparkConf().setMaster("local").setAppName("testsql")val session: SparkSession = SparkSession.builder().config(conf)//.enableHiveSupport() spark sql on hive需要開啟 支持ddl.getOrCreate()//可以獲取到scval sparkContext: SparkContext = session.sparkContextsparkContext.setLogLevel("ERROR")val dataFrame: DataFrame = session.read.json("input/json")//展示數(shù)據(jù)println(">" * 50)dataFrame.show()//展示schemaprintln(">" * 50)dataFrame.printSchema()//while (true){}println(">" * 50)val databases: Dataset[Database] = session.catalog.listDatabases()databases.show()println(">" * 50)val tables: Dataset[Table] = session.catalog.listTables()tables.show()println(">" * 50)val functions: Dataset[catalog.Function] = session.catalog.listFunctions()functions.show()println(">" * 50)dataFrame.createTempView("abc")val dataFrame1: DataFrame = session.sql("select * from abc")dataFrame1.show()println(">" * 50)session.catalog.listTables().show()import scala.io.StdIn._while (true){val sqlStr: String = readLine("input your sql:")session.sql(sqlStr).show()}}}

日志輸出

D:\Develop\Java\jdk1.8.0_202\bin\java.exe "-javaagent:D:\Programs\IntelliJ IDEA 2021.1.2\lib\idea_rt.jar=64167:D:\Programs\IntelliJ IDEA 2021.1.2\bin" -Dfile.encoding=UTF-8 -classpath 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com.zxl.spark.sql.lesson01_sql_basic Using Spark's default log4j profile: org/apache/spark/log4j-defaults.properties 21/08/11 16:43:56 INFO SparkContext: Running Spark version 3.1.1 21/08/11 16:43:56 INFO ResourceUtils: ============================================================== 21/08/11 16:43:56 INFO ResourceUtils: No custom resources configured for spark.driver. 21/08/11 16:43:56 INFO ResourceUtils: ============================================================== 21/08/11 16:43:56 INFO SparkContext: Submitted application: testsql 21/08/11 16:43:56 INFO ResourceProfile: Default ResourceProfile created, executor resources: Map(cores -> name: cores, amount: 1, script: , vendor: , memory -> name: memory, amount: 1024, script: , vendor: , offHeap -> name: offHeap, amount: 0, script: , vendor: ), task resources: Map(cpus -> name: cpus, amount: 1.0) 21/08/11 16:43:56 INFO ResourceProfile: Limiting resource is cpu 21/08/11 16:43:56 INFO ResourceProfileManager: Added ResourceProfile id: 0 21/08/11 16:43:57 INFO SecurityManager: Changing view acls to: 張學(xué)亮,???áá 21/08/11 16:43:57 INFO SecurityManager: Changing modify acls to: 張學(xué)亮,???áá 21/08/11 16:43:57 INFO SecurityManager: Changing view acls groups to: 21/08/11 16:43:57 INFO SecurityManager: Changing modify acls groups to: 21/08/11 16:43:57 INFO SecurityManager: SecurityManager: authentication disabled; ui acls disabled; users with view permissions: Set(張學(xué)亮, ???áá); groups with view permissions: Set(); users with modify permissions: Set(張學(xué)亮, ???áá); groups with modify permissions: Set() 21/08/11 16:43:58 INFO Utils: Successfully started service 'sparkDriver' on port 64180. 21/08/11 16:43:58 INFO SparkEnv: Registering MapOutputTracker 21/08/11 16:43:58 INFO SparkEnv: Registering BlockManagerMaster 21/08/11 16:43:58 INFO BlockManagerMasterEndpoint: Using org.apache.spark.storage.DefaultTopologyMapper for getting topology information 21/08/11 16:43:58 INFO BlockManagerMasterEndpoint: BlockManagerMasterEndpoint up 21/08/11 16:43:58 INFO SparkEnv: Registering BlockManagerMasterHeartbeat 21/08/11 16:43:58 INFO DiskBlockManager: Created local directory at C:\Users\zhang\AppData\Local\Temp\blockmgr-ee5ef4fa-cc86-49c2-b3f0-371b4c491776 21/08/11 16:43:58 INFO MemoryStore: MemoryStore started with capacity 1987.5 MiB 21/08/11 16:43:58 INFO SparkEnv: Registering OutputCommitCoordinator 21/08/11 16:43:58 INFO Utils: Successfully started service 'SparkUI' on port 4040. 21/08/11 16:43:58 INFO SparkUI: Bound SparkUI to 0.0.0.0, and started at http://ZXLT:4040 21/08/11 16:43:58 INFO Executor: Starting executor ID driver on host ZXLT 21/08/11 16:43:58 INFO Utils: Successfully started service 'org.apache.spark.network.netty.NettyBlockTransferService' on port 64203. 21/08/11 16:43:58 INFO NettyBlockTransferService: Server created on ZXLT:64203 21/08/11 16:43:58 INFO BlockManager: Using org.apache.spark.storage.RandomBlockReplicationPolicy for block replication policy 21/08/11 16:43:58 INFO BlockManagerMaster: Registering BlockManager BlockManagerId(driver, ZXLT, 64203, None) 21/08/11 16:43:58 INFO BlockManagerMasterEndpoint: Registering block manager ZXLT:64203 with 1987.5 MiB RAM, BlockManagerId(driver, ZXLT, 64203, None) 21/08/11 16:43:58 INFO BlockManagerMaster: Registered BlockManager BlockManagerId(driver, ZXLT, 64203, None) 21/08/11 16:43:58 INFO BlockManager: Initialized BlockManager: BlockManagerId(driver, ZXLT, 64203, None) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> +---+---------+ |age| name| +---+---------+ | 20|zhangsan0| | 21|zhangsan1| | 22|zhangsan2| | 23|zhangsan3| | 24|zhangsan4| +---+---------+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> root|-- age: long (nullable = true)|-- name: string (nullable = true)>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> +-------+----------------+--------------------+ | name| description| locationUri| +-------+----------------+--------------------+ |default|default database|file:/E:/Workspac...| +-------+----------------+--------------------+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> +----+--------+-----------+---------+-----------+ |name|database|description|tableType|isTemporary| +----+--------+-----------+---------+-----------+ +----+--------+-----------+---------+-----------+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> +----------+--------+-----------+--------------------+-----------+ | name|database|description| className|isTemporary| +----------+--------+-----------+--------------------+-----------+ | !| null| null|org.apache.spark....| true| | %| null| null|org.apache.spark....| true| | &| null| null|org.apache.spark....| true| | *| null| null|org.apache.spark....| true| | +| null| null|org.apache.spark....| true| | -| null| null|org.apache.spark....| true| | /| null| null|org.apache.spark....| true| | <| null| null|org.apache.spark....| true| | <=| null| null|org.apache.spark....| true| | <=>| null| null|org.apache.spark....| true| | =| null| null|org.apache.spark....| true| | ==| null| null|org.apache.spark....| true| | >| null| null|org.apache.spark....| true| | >=| null| null|org.apache.spark....| true| | ^| null| null|org.apache.spark....| true| | abs| null| null|org.apache.spark....| true| | acos| null| null|org.apache.spark....| true| | acosh| null| null|org.apache.spark....| true| |add_months| null| null|org.apache.spark....| true| | aggregate| null| null|org.apache.spark....| true| +----------+--------+-----------+--------------------+-----------+ only showing top 20 rows>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> +---+---------+ |age| name| +---+---------+ | 20|zhangsan0| | 21|zhangsan1| | 22|zhangsan2| | 23|zhangsan3| | 24|zhangsan4| +---+---------+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> +----+--------+-----------+---------+-----------+ |name|database|description|tableType|isTemporary| +----+--------+-----------+---------+-----------+ | abc| null| null|TEMPORARY| true| +----+--------+-----------+---------+-----------+input your sql:select name from abc +---------+ | name| +---------+ |zhangsan0| |zhangsan1| |zhangsan2| |zhangsan3| |zhangsan4| +---------+input your sql:select age from abc +---+ |age| +---+ | 20| | 21| | 22| | 23| | 24| +---+input your sql:select * from abc +---+---------+ |age| name| +---+---------+ | 20|zhangsan0| | 21|zhangsan1| | 22|zhangsan2| | 23|zhangsan3| | 24|zhangsan4| +---+---------+input your sql: Process finished with exit code -1

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