Scala Oracle JDBC

Question

我在Scala中遇到了Module not found錯誤。我試圖獲得與Oracle的jdbc連接，加入兩個表然後將其打印出來。

我的斯卡拉文件

import org.apache.spark.SparkContext 
import org.apache.spark.SparkContext._ 
import org.apache.spark.SparkConf 
import org.apache.spark.sql.SQLContext 

object sparkJDBC { 
    def main(args: Array[String]): Unit = { 
    val conf = new SparkConf().setAppName("Simple  
     Application").setMaster("local[2]").set("spark.executor.memory","1g") 
    val sc = new SparkContext(conf) 
    var sqlContext = new SQLContext(sc) 
    val chrttype = sqlContext.load("jdbc", 
     Map("url" -> "jdbc:oracle:thin:gductv1/gductv1@//localhost:1521/XE", 
     "dbtable" -> "chrt_typ")) 
    val clntlvl1 = sqlContext.load("jdbc", 
     Map("url" -> "jdbc:oracle:thin:gductv1/gductv1@//localhost:1521/XE", 
     "dbtable" -> "clnt_lvl1")) 
    val join2 = 
     chrttyp.join(clntlvl1,chrttyp.col("chrt_typ_key")===clntlvl1("lvl1_key")) 
    join2.foreach(println) 
    join2.printSchema() 
    } 
} 

我build.sbt文件

name := "sparkJDBC" 
    version := "0.1" 
    scalaVersion := "2.11.7" 

    libraryDependencies += "org.apache.spark" %% "spark-core" % "1.5.1" 
    libraryDependencies += "org.apache.tika" % "tika-core" % "1.11" 
    libraryDependencies += "org.apache.tika" % "tika-parsers" % "1.11" 
    libraryDependencies += "org.apache.hadoop" % "hadoop-client" % "2.7.1" 
    libraryDependencies += "org.apache.spark" % "spark-sql" % "1.0.0" 

錯誤文件是

[warn] module not found: org.apache.spark#spark-sql;1.0.0 
[warn] ==== local: tried 
[warn] C:\Users\.ivy2\local\org.apache.spark\spark-sql\1.0.0\ivys\ivy.xml 
[warn] ==== public: tried 
[warn] https://repo1.maven.org/maven2/org/apache/spark/spark-sql/1.0.0/spark-sql-1.0.0.pom 
[info] Resolving jline#jline;2.12.1 ... 
[warn] :::::::::::::::::::::::::::::::::::::::::::::: 
[warn] ::   UNRESOLVED DEPENDENCIES   :: 
[warn] :::::::::::::::::::::::::::::::::::::::::::::: 
[warn] :: org.apache.spark#spark-sql;1.0.0: not found 
[warn] :::::::::::::::::::::::::::::::::::::::::::::: 

[error] (*:update) sbt.ResolveException: unresolved dependency: org.apache.spark#spark-sql;1.0.0: not found 

請幫我找出是什麼導致了這一點。

Answer 1

spark-sql是Scala庫，如spark-core，所以你需要的組名和工件名之間%%以同樣的方式。僅在它們之間使用%才能用於Java庫。請參閱http://www.scala-sbt.org/0.13/docs/Cross-Build.html，因爲您需要%%。

Answer 2

爲了確保有一個正確的依賴，你可以使用網站像mvnrepository：https://mvnrepository.com/artifact/org.apache.spark/spark-sql_2.10/1.0.0

libraryDependencies += "org.apache.spark" % "spark-sql_2.10" % "1.0.0"