Question

我正在尝试从Hbase文档http://hbase.apache.org/1.2/book.html#scala编译并运行scala示例但是我遇到了无法导入Connection和ConnectionFactory类的编译错误。

我尝试了两个scala版本2.10.6和2.11.11，但在两种情况下都失败了。

简单的Scala代码：

import org.apache.hadoop.hbase.HBaseConfiguration
import org.apache.hadoop.hbase.client.Connection
import org.apache.hadoop.hbase.client.ConnectionFactory

object Client {

        def main(args: Array[String]): Unit = {
                val conf = new HBaseConfiguration()
                val connection = ConnectionFactory.createConnection(conf)
                val admin = connection.getAdmin()

                // list the tables
                val listtables=admin.listTables()
                listtables.foreach(println)
        }
}

Sbt文件（sbt版本0.13.15）：

name := "HBaseScalaClient"

scalaVersion := "2.10.6"

resolvers += "Apache HBase" at "https://repository.apache.org/content/repositories/releases"

resolvers += "Thrift" at "http://people.apache.org/~rawson/repo/"

libraryDependencies ++= Seq(
    "org.apache.hadoop" % "hadoop-core" % "0.20.2",
    "org.apache.hbase" % "hbase" % "0.90.4"
)

编译错误：

[error] /home/user/HBaseScala/Client.scala:2: object Connection is not a member of package org.apache.hadoop.hbase.client
[error] import org.apache.hadoop.hbase.client.Connection
[error]        ^
[error] /home/user/HBaseScala/Client.scala:3: object ConnectionFactory is not a member of package org.apache.hadoop.hbase.client
[error] import org.apache.hadoop.hbase.client.ConnectionFactory
[error]        ^
[error] /home/user/HBaseScala/Client.scala:9: not found: value ConnectionFactory
[error]                 val connection = ConnectionFactory.createConnection(conf)
[error]                                  ^
[error] three errors found
[error] (compile:compileIncremental) Compilation failed
[error] Total time: 1 s, completed May 12, 2017 3:30:48 PM

我缺少什么想法或这段代码有什么问题？

Answer 1

尝试使用此库依赖项：

libraryDependencies ++= Seq(
"org.apache.hadoop" % "hadoop-core" % "1.2.1",
"org.apache.hbase" % "hbase" % "1.2.0",
"org.apache.hbase" % "hbase-client" % "1.2.0",
"org.apache.hbase" % "hbase-common" % "1.2.0",
"org.apache.hbase" % "hbase-server" % "1.2.0"
)

并添加此导入：

import org.apache.hadoop.hbase.HBaseConfiguration
import org.apache.hadoop.hbase.client.{ConnectionFactory,HBaseAdmin,HTable,Put,Get}
import org.apache.hadoop.hbase.util.Bytes

无法导入带有Scala类Connection *的HBase

1 个答案: