本篇内容主要讲解“impala jdbc怎么配置”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“impala jdbc怎么配置”吧!
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1 看官网jdbc 配置
需要的包，可以从CDH中组件拷贝
commons-logging-X.X.X.jar hadoop-common.jar hive-common-X.XX.X-cdhX.X.X.jar hive-jdbc-X.XX.X-cdhX.X.X.jar hive-metastore-X.XX.X-cdhX.X.X.jar hive-service-X.XX.X-cdhX.X.X.jar httpclient-X.X.X.jar httpcore-X.X.X.jar libfb303-X.X.X.jar libthrift-X.X.X.jar log4j-X.X.XX.jar slf4j-api-X.X.X.jar slf4j-logXjXX-X.X.X.jar
3 例子
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class ClouderaImpalaJdbcExample {
// here is an example query based on one of the Hue Beeswax sample tables
private static final String SQL_STATEMENT = "SELECT a FROM test limit 10";
// set the impalad host
private static final String IMPALAD_HOST = "192.168.1.106";
// port 21050 is the default impalad JDBC port
private static final String IMPALAD_JDBC_PORT = "21050";
private static final String CONNECTION_URL = "jdbc:hive2://" + IMPALAD_HOST + ':' + IMPALAD_JDBC_PORT + "/;auth=noSasl";
private static final String JDBC_DRIVER_NAME = "org.apache.hive.jdbc.HiveDriver";
public static void main(String[] args) {
System.out.println("\n=============================================");
System.out.println("Cloudera Impala JDBC Example");
System.out.println("Using Connection URL: " + CONNECTION_URL);
System.out.println("Running Query: " + SQL_STATEMENT);
Connection con = null;
try {
Class.forName(JDBC_DRIVER_NAME);
con = DriverManager.getConnection(CONNECTION_URL);
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery(SQL_STATEMENT);
System.out.println("\n== Begin Query Results ======================");
// print the results to the console
while (rs.next()) {
// the example query returns one String column
System.out.println(rs.getString(1));
}
System.out.println("== End Query Results =======================\n\n");
} catch (SQLException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
con.close();
} catch (Exception e) {
// swallow
}
}
}
}到此，相信大家对“impala jdbc怎么配置”有了更深的了解，不妨来实际操作一番吧！这里是创新互联网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！