Hbase读取数据，

Hbase读取数据，

通过Get获取指定的的字段

package org.common;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.util.Bytes;

public class Demo5 {

	public static void main(String[] args) {
		try {
			/**
			 * HBaseAdmin is special class
			 * some step
			 */	
			//1.get Configuration
			Configuration conf = HBaseConfiguration.create();
			//2.get connection from Configuration
			Connection connection = ConnectionFactory.createConnection(conf);
			//3.get HTable from connection
			TableName tableName = TableName.valueOf(Bytes.toBytes("emp"));
			HTable hTable = (HTable)connection.getTable(tableName);
			//4.Construct a Get and put it to hTable
			Get get1 = new Get(Bytes.toBytes("row1"));
			//get1.addFamily(Bytes.toBytes("personal data"));  			//get1.addColumn(Bytes.toBytes("personal data"),Bytes.toBytes("name"));
			//5.conform Family
			//get1.addFamily(Bytes.toBytes("personal data"));
			
			Result result = hTable.get(get1);
			byte[] value  = result.getValue(Bytes.toBytes("personal data"),Bytes.toBytes("name"));

			System.out.println("name:"+Bytes.toString(value));
			
			
			hTable.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

}