scala连接hive
时间: 2023-10-28 10:05:21 浏览: 115
Scala可以通过使用Apache Hive提供的Java API来连接Hive。首先,需要在Scala工程中导入Hadoop和Hive的依赖jar包。然后,在代码中引入相应的包,即可进行连接操作。具体步骤如下:
1. 导入依赖包:
```
import org.apache.hadoop.conf.Configuration
import org.apache.hadoop.hive.conf.HiveConf
import org.apache.hadoop.hive.jdbc.HiveConnection
```
2. 创建Hive连接:
```
val conf = new Configuration()
val hiveConf = new HiveConf(conf, classOf[HiveConf])
val connection = new HiveConnection(hiveConf)
```
3. 执行Hive查询:
```
val statement = connection.createStatement()
val resultSet = statement.executeQuery("SELECT * FROM table_name")
```
4. 处理查询结果:
```
while (resultSet.next()) {
val column1 = resultSet.getString("column1")
val column2 = resultSet.getInt("column2")
// 处理结果...
}
```
5. 关闭连接:
```
resultSet.close()
statement.close()
connection.close()
```
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