Hbase更新数据，hbase更新

Hbase更新数据，hbase更新

1.更新的思路

找到需要更新的值{通过table名加上字段找到}

 

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.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.util.Bytes;

public class Demo4 {

	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 Put and put it to hTable
			Put put1 = new Put(Bytes.toBytes("row1"));
			put1.addColumn(Bytes.toBytes("personal data"),Bytes.toBytes("name"),Bytes.toBytes("late name"));
			put1.addColumn(Bytes.toBytes("personal data"),Bytes.toBytes("city"),Bytes.toBytes("late beijing"));
			put1.addColumn(Bytes.toBytes("personal data"),Bytes.toBytes("salary"),Bytes.toBytes("late 50000"));
			
			hTable.put(put1);
			System.out.println("insert into emp finish...");
			hTable.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

}