①新建maven项目,加载依赖包
在pom.xml中添加
<dependency>
<groupId>jdk.tools</groupId>
<artifactId>jdk.tools</artifactId>
<version>1.8</version>
<scope>system</scope>
<systemPath>${JAVA_HOME}/lib/tools.jar</systemPath>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.hive</groupId>
<artifactId>hive-exec</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.apache.hive</groupId>
<artifactId>hive-jdbc</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-common</artifactId>
<version>2.6.1</version>
</dependency>
②启动hive的service,启动集群
(hive1.2.1版本以后需要使用hiveserver2启动)
hive –-service hiveserver2 –-hiveconf hive.server2.thrift.port=11111(开启服务并设置端口号)
③配置core-xite.xml
<property>
<name>hadoop.proxyuser.neworigin.groups</name>
<value>*</value>
<description>Allow the superuser oozie to impersonate any members of the group group1 and group2</description>
</property>
<property>
<name>hadoop.proxyuser.neworigin.hosts</name>
<value>*</value>
<description>The superuser can connect only from host1 and host2 to impersonate a user</description>
</property>
④编写java代码
package com.neworigin.HiveTest1;import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException;import java.sql.Statement;public class JDBCUtil {static String DriverName="org.apache.hive.jdbc.HiveDriver";static String url="jdbc:hive2://s100:11111/myhive";static String user="neworigin";static String pass="123";//创建连接public static Connection getConn() throws Exception{ Class.forName(DriverName); Connection conn = DriverManager.getConnection(url,user,pass); return conn;}//创建命令public static Statement getStmt(Connection conn) throws SQLException{ return conn.createStatement();}public void closeFunc(Connection conn,Statement stmt) throws SQLException{ stmt.close(); conn.close(); }}package com.neworigin.HiveTest1;import java.sql.Connection;import java.sql.ResultSet;import java.sql.ResultSetMetaData;import java.sql.Statement;public class JDBCTest {public static void main(String[] args) throws Exception { Connection conn = JDBCUtil.getConn();//创建连接 Statement stmt=JDBCUtil.getStmt(conn);//创建执行对象 String sql="select * from myhive.employee";//执行sql语句 String sql2="create table jdbctest(id int,name string)"; ResultSet set = stmt.executeQuery(sql);//返回执行的结果集 ResultSetMetaData meta = set.getMetaData();//获取字段 while(set.next()) { for(int i=1;i<=meta.getColumnCount();i++) { System.out.print(set.getString(i)+" "); } System.out.println(); } System.out.println("第一条sql语句执行完毕"); boolean b = stmt.execute(sql2); if(b) { System.out.println("成功"); } }}