在本地用idea连接虚拟机上的hbase集群的实现代码

1、用maven添加依赖（看清自己hbase版本）

<dependency>
	<groupId>org.apache.hbase</groupId>
	<artifactId>hbase-server</artifactId>
	<version>1.3.1</version>
</dependency>
<dependency>
	<groupId>org.apache.hbase</groupId>
	<artifactId>hbase-client</artifactId>
	<version>1.3.1</version>
</dependency>

2、将虚拟机上的hbase-site.xml文件放到resourcs目录下

3、修改本机的hosts文件（在C:\Windows\System32\drivers\etc下）
添加集群的IP 名称
192.168.124.116 Master
192.168.124.115 Slave1
192.168.124.130 Slave2

4、代码举例，判断表是否存在

package com.zyb.test;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;

import java.io.IOException;

public class TestDemo {


  public static Connection connection=null;
  public static Admin admin=null;
  static {
    try {
      //1、获取配置信息
      Configuration configuration = HBaseConfiguration.create();
      configuration.set("hbase.rootdir", "hdfs://192.168.124.116:9000/HBase");
      configuration.set("hbase.zookeeper.quorum","Master,Slave1,Slave2");
      //2、创建连接对象
      connection= ConnectionFactory.createConnection(configuration);
      //3、创建Admin对象
      admin = connection.getAdmin();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  //判断表是否存在
  public static boolean isTableExiat(String tableName) throws IOException {
    boolean exists = admin.tableExists(TableName.valueOf(tableName));
    return exists;
  }

  public static void close(){
    if (admin!=null){
      try {
        admin.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
    if (connection!=null){
      try {
        connection.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
  }
  public static void main(String[] args) throws IOException {
    System.out.println(isTableExiat("student"));
    //关闭资源
    close();
  }
}