HBase API 的使用（一）
package cn.itcast.bigdata.hbase;
import java.util.ArrayList;
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.TableName;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Test;
public class HbaseDao {
//添加数据
@Test
public void insetTest() throws Exception{
Configuration conf = HBaseConfiguration.create();
conf.set("hbase.zookeeper.quorum", "hadoop04:2181,hadoop05:2181,hadoop06:2181");
HTable nvsheng = new HTable(conf,"nvsheng");
Put name = new Put(Bytes.toBytes("rk00001"));
name.add(Bytes.toBytes("base_info"),Bytes.toBytes("name"),Bytes.toBytes("angelababy"));
Put age = new Put(Bytes.toBytes("rk00001"));
age.add(Bytes.toBytes("base_info"),Bytes.toBytes("age"),Bytes.toBytes(18));
ArrayList<Put> puts = new ArrayList<>();
puts.add(name);
puts.add(age);
nvsheng.put(puts);
}
//创建表
public static void main(String[] args) throws Exception {
Configuration conf = HBaseConfiguration.create();
conf.set("hbase.zookeeper.quorum", "hadoop04:2181,hadoop05:2181,hadoop06:2181");
HBaseAdmin admin = new HBaseAdmin(conf);
TableName name = TableName.valueOf("nvsheng");
HTableDescriptor desc = new HTableDescriptor(name);
HColumnDescriptor base_info = new HColumnDescriptor("base_info");
HColumnDescriptor extra_info = new HColumnDescriptor("extra_info");
base_info.setMaxVersions(5);
desc.addFamily(base_info);
desc.addFamily(extra_info);
admin.createTable(desc);
}
}
