HBase JavaAPI：DML（数据的增删改查）

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CellUtil;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.Bytes;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class DMLTest01 {
    
    
    public static void main(String[] args) throws IOException {
    
    
        DMLTest01 test01 = new DMLTest01();
        //构建链接对象
        Configuration configuration = HBaseConfiguration.create();
        configuration.set("hbase.zookeeper.quorum","node1:2181,node2:2181,node3:2181");
        Connection connection = ConnectionFactory.createConnection(configuration);

        //构建table表对象
        TableName tableName = TableName.valueOf("111:01");
        Table table = connection.getTable(tableName);

        //数据的增删改查
        //test01.putData(table);
        //test01.getData(table);
        //test01.delData(table);
        //test01.scanData(table);
        //test01.putListData(table);

        //释放资源
        table.close();
        connection.close();
    }
    /**
     * 批量写入数据到Hbase
     * @param table
     */
    private void putListData(Table table) throws IOException {
    
    
        //step1：构建Put对象，一个Put对象用于表示一个Rowkey写入的数据
        Put put1 = new Put(Bytes.toBytes("20210101_001"));
        Put put2 = new Put(Bytes.toBytes("20210201_002"));
        Put put3 = new Put(Bytes.toBytes("20210301_003"));

        //step2：为Put添加这个Rowkey的每一列
        put1.addColumn(Bytes.toBytes("basic"),Bytes.toBytes("name"),Bytes.toBytes("laoda"));
        put1.addColumn(Bytes.toBytes("basic"),Bytes.toBytes("age"),Bytes.toBytes("18"));
        put1.addColumn(Bytes.toBytes("other"),Bytes.toBytes("phone"),Bytes.toBytes("110"));
        put1.addColumn(Bytes.toBytes("other"),Bytes.toBytes("addr"),Bytes.toBytes("shanghai"));

        put2.addColumn(Bytes.toBytes("basic"),Bytes.toBytes("name"),Bytes.toBytes("laoer"));
        put2.addColumn(Bytes.toBytes("basic"),Bytes.toBytes("age"),Bytes.toBytes("20"));
        put2.addColumn(Bytes.toBytes("other"),Bytes.toBytes("phone"),Bytes.toBytes("120"));

        put3.addColumn(Bytes.toBytes("basic"),Bytes.toBytes("name"),Bytes.toBytes("laosan"));
        put3.addColumn(Bytes.toBytes("basic"),Bytes.toBytes("age"),Bytes.toBytes("22"));
        put3.addColumn(Bytes.toBytes("other"),Bytes.toBytes("addr"),Bytes.toBytes("beijing"));

        //step3：将多个Put封装到List中
        List<Put> puts = new ArrayList<Put>();
        puts.add(put1);
        puts.add(put2);
        puts.add(put3);

        //step4：执行PutList
        table.put(puts);
    }
	/**
     * scan查询数据
     * @param table
     */
    private void scanData(Table table) throws IOException {
    
    
        Scan scan = new Scan();
        ResultScanner scanner = table.getScanner(scan);
        for (Result result : scanner) {
    
    
            //rowkey值
            System.out.println(result.getRow());
            for (Cell cell : result.rawCells()) {
    
    
                System.out.println(
                        //rowkey
                        Bytes.toString(CellUtil.cloneRow(cell))+"\t"+
                                //列族
                                Bytes.toString(CellUtil.cloneFamily(cell))+"\t"+
                                //名称
                                Bytes.toString(CellUtil.cloneQualifier(cell))+"\t"+
                                //值
                                Bytes.toString(CellUtil.cloneValue(cell))+"\t"+
                                //时间
                                cell.getTimestamp()
                );
            }
        }
    }
	/**
     * 删除数据
     * @param table
     */
    private void delData(Table table) throws IOException {
    
    
        Delete delete = new Delete(Bytes.toBytes("20210318_01"));
        //删除一个版本
        delete.addColumn(Bytes.toBytes("aa"),Bytes.toBytes("name"));
        //删除所有版本
        delete.addColumns(Bytes.toBytes("aa"),Bytes.toBytes("name"));
        table.delete(delete);
    }
	/**
     * get方法查询数据
     * @param table
     */
    private void getData(Table table) throws IOException {
    
    
        Get get = new Get(Bytes.toBytes("20210318_01"));
        Result result = table.get(get);
        for (Cell cell : result.rawCells()) {
    
    
            System.out.println(
                    //rowkey
                    Bytes.toString(CellUtil.cloneRow(cell))+"\t"+
                    //列族
                    Bytes.toString(CellUtil.cloneFamily(cell))+"\t"+
                    //名称
                    Bytes.toString(CellUtil.cloneQualifier(cell))+"\t"+
                    //值
                    Bytes.toString(CellUtil.cloneValue(cell))+"\t"+
                    //时间
                    cell.getTimestamp()
            );
        }
    }
	/**
     * 写入数据到Hbase
     * @param table
     */
    private void putData(Table table) throws IOException {
    
    
        Put put = new Put(Bytes.toBytes("20210318_01"));
        put.addColumn(Bytes.toBytes("aa"),Bytes.toBytes("name"),Bytes.toBytes("zhangsan"));
        table.put(put);
    }
}