java实现hbase表创建、数据插入、删除表

近日查看了相关资料后，梳理了一下用java实现hbase的表创建、数据插入、删除表，代码如下：

1、需要的jar包：

commons-codec-1.4.jar

commons-logging-1.0.4.jar

hadoop-0.20.2-core.jar

hbase-0.20.6.jar

log4j-1.2.15.jar

zookeeper-3.2.2.jar

 

2、代码：

 

package org.myhbase;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.io.BatchUpdate;

public class HBaseBasic02 {
    static HBaseConfiguration hbaseConfig=null;
    static{
        Configuration config=new Configuration();
        config.set("hbase.zookeeper.quorum","192.168.10.149,192.168.10.44,192.168.10.49");
        config.set("hbase.zookeeper.property.clientPort", "2181");
        hbaseConfig=new HBaseConfiguration(config);
    }

    /**
     * 创建一张表
     * @throws IOException
     */
    public static void createTable(String tablename) throws IOException{
        HBaseAdmin admin = new HBaseAdmin(hbaseConfig);
        if(admin.tableExists(tablename)){
            System.out.println("table Exists!!!");
        }else{
            HTableDescriptor tableDesc = new HTableDescriptor(tablename);
            tableDesc.addFamily(new HColumnDescriptor("name:"));
            admin.createTable(tableDesc);
            System.out.println("create table ok.");
        }
    }

    /**
     * 删除一张表
     * @throws IOException
     */
    public static void dropTable(String tablename) throws IOException{
        HBaseAdmin admin = new HBaseAdmin(hbaseConfig);
        admin.disableTable(tablename);
        admin.deleteTable(tablename);
        System.out.println("drop table ok.");
    }


    /**
     * 添加一条数据
     * @throws IOException
     */
    public static void addData(String tablename) throws IOException{
        HTable table=new HTable(hbaseConfig,tablename);
        BatchUpdate update=new BatchUpdate("Huangyi");
        update.put("name:java","http://www.sun.com".getBytes());
        table.commit(update);
        System.out.println("add data ok.");
    }


    /**
     * 显示所有数据
     * @throws IOException
     */
    public static void getAllData(String tablename) throws IOException{
        HTable table=new HTable(hbaseConfig,tablename);
        Scan s=new Scan();
        ResultScanner rs=table.getScanner(s);
        for(Result r:rs){
            for(KeyValue kv:r.raw()){
                System.out.println("rowkey : "+new String(kv.getRow()));
                System.out.println(new String(kv.getColumn())+" = "+new String(kv.getValue()));
            }
        }
    }

    public static void main(String [] args) throws IOException{
            String tablename="table_1";
            HBaseBasic02.createTable(tablename);
            HBaseBasic02.addData(tablename);
            HBaseBasic02.getAllData(tablename);
            HBaseBasic02.dropTable(tablename);
    }


}