java jdbc 连接hive-2.1.1

package com.linewell.hivetest;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;



public class HiveTest {
	private static String Driver = "org.apache.hive.jdbc.HiveDriver";
	private static String url = "jdbc:hive2://192.168.72.129:10000/default?useUnicode=true&characterEncoding=UTF-8";
	private static String name = "root";
	private static String password = "tanchao0123";
	public static void main(String[] args) {
		try {
			Class.forName(Driver);
			Connection conn = DriverManager.getConnection(url,name,password);
			Statement stat =conn.createStatement();
			String sql  ="show databases";
			ResultSet rs = stat.executeQuery(sql);
			while (rs.next()) {
				System.out.println(rs.getString(1));
			}			
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

跑程序时出现问题：

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/E:/%e8%bd%af%e4%bb%b6%e5%a4%87%e4%bb%bd/apache-hive-2.1.1-bin/lib/log4j-slf4j-impl-2.4.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/E:/%e8%bf%85%e9%9b%b7%e4%b8%8b%e8%bd%bd/hadoop-2.8.0/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
java.sql.SQLException: Could not open client transport with JDBC Uri: jdbc:hive2://192.168.72.129:10000/default?useUnicode=true&characterEncoding=UTF-8: Failed to open new session: java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.authorize.AuthorizationException): Unauthorized connection for super-user: root from IP 192.168.72.129
at org.apache.hive.jdbc.HiveConnection.<init>(HiveConnection.java:209)
at org.apache.hive.jdbc.HiveDriver.connect(HiveDriver.java:107)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at com.linewell.hivetest.HiveTest.main(HiveTest.java:18)

Caused by: org.apache.hive.service.cli.HiveSQLException: Failed to open new session: java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.authorize.AuthorizationException): Unauthorized connection for super-user: root from IP 192.168.72.129

解决办法：在core-site.xml 下添加

<property>
<name>hadoop.proxyuser.root.groups</name>
<value>*</value>
</property>
<property>
<name>hadoop.proxyuser.root.hosts</name>
<value>*</value>

</property>

然后重启hadoop服务。

运行java程序

成功！

注意点

1.导入包要完整。

2.要开启hadoop集群，应为hive是基于hadoop的。

3. 启动 metastore 和hiveserver 启动命令：

hive --service metastore &

hive --service hiveserver & 或者 hive --service hivesever2 &

启动hiveserver 或者 hivesever2 它们之间的不同有启动命令性能驱动名创建连接不一样，建议用hiveserver2.

java jdbc 连接hive-2.1.1

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