Java API 操做Hbase

package com.bi.net;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.filter.CompareFilter;
import org.apache.hadoop.hbase.filter.FilterList;
import org.apache.hadoop.hbase.filter.PrefixFilter;
import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;
import org.junit.Before;
import org.junit.Test;

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

/**
 * Created by DengNi on 2016/6/18.
 */
public class HbaseJdbc {

    public static Configuration conf = null;
    public static TableName tab = TableName.valueOf("HbaseInWord".getBytes());
    public static TableName hbaseInWord = TableName.valueOf("HbaseInWord");
    public static Random ra = new Random();

    /**
     * 1 create table 須要 HbaseAdmin 類
     * 2 數據的insert (put) ，update ，select by get or scan 都是經過HTable 類操做
     */

    @Before
    public void init() {

        conf = HBaseConfiguration.create();
        conf.set("hbase.zookeeper.quorum", "bigdataspark:2181,bigdatacloud:2181,bigdatahadoop:2181");

    }

    @Test
    public void createNewTableOnHbase() throws IOException {

        HBaseAdmin hBaseAdmin = new HBaseAdmin(conf);

        if (hBaseAdmin.tableExists(tab)) {
            hBaseAdmin.disableTable(tab);
            hBaseAdmin.deleteTable(tab);

        }
        HTableDescriptor tableDesc = new HTableDescriptor(tab);
        HColumnDescriptor colDesc = new HColumnDescriptor("cfOne");
        colDesc.setBlockCacheEnabled(true);
        colDesc.setBlocksize(1280);
        colDesc.setMaxVersions(16);
        tableDesc.addFamily(colDesc);
        hBaseAdmin.createTable(tableDesc);

        // base(main):015:0> list  cmd check if the table is been create on HBase

    }

    @Test
    public void insertIntoHbaseInWord() throws IOException {

        HTable table = new HTable(conf, hbaseInWord);

        List list = new ArrayList<Put>();
        for (int i = 999; i >= 0; i--) {
            Put putValue = new Put(String.valueOf(i).getBytes());
            putValue.add("cfOne".getBytes(), "name".getBytes(), "zl".getBytes());
            putValue.add("cfOne".getBytes(), "age".getBytes(), String.valueOf(i % 102).getBytes());
            list.add(putValue);

        }
        table.put(list);


    }

    @Test
    public void searchFromHbaseInWordByGet() throws IOException {

        HTable table = new HTable(conf, hbaseInWord);
        Get get = new Get("999".getBytes());
        Result result = table.get(get);
        Cell cell = result.getColumnLatestCell("cfOne".getBytes(), "name".getBytes());
        byte[] bytes = CellUtil.cloneValue(cell);
        System.out.println(new String(bytes, "UTF-8"));

    }

    @Test
    public void searchByScan() throws IOException {

        HTable table = new HTable(conf, hbaseInWord);
        Scan scan = new Scan("900".getBytes(), "999".getBytes());
        ResultScanner result = table.getScanner(scan);
        Iterator<Result> iterator = result.iterator();
        while (iterator.hasNext()) {
            Result result1 = iterator.next();
            Cell cell = result1.getColumnLatestCell("cfOne".getBytes(), "name".getBytes());
            byte[] value = CellUtil.cloneValue(cell);
            byte[] row = CellUtil.cloneRow(cell);
            System.out.println(new String(row, "UTF-8") + "  " + new String(value, "UTF-8"));

        }

    }

    @Test
    public void deleteOneRow() throws IOException {

        HTable table = new HTable(conf, hbaseInWord);
        Delete delete = new Delete("988".getBytes());
        table.delete(delete);


    }

    /**
     * A more complicated example
     */
    @Test
    public void insertPut() throws IOException {


        HTable table1 = new HTable(conf, hbaseInWord);
        List<Put> list = new ArrayList<Put>();

        for (int i = 0; i < 10000; i++) {

            Put put = new Put(generateRowKey("1531187321").getBytes());

            put.add("cfOne".getBytes(),"addr".getBytes(),"Shanghai".getBytes());
            put.add("cfOne".getBytes(),"type".getBytes(),String.valueOf(ra.nextInt(2)).getBytes());
            put.add("cfOne".getBytes(),"phone".getBytes(),generatePhone("153").getBytes());
            put.add("cfOne".getBytes(),"time".getBytes(),String.valueOf(ra.nextInt(500)).getBytes());

            list.add(put);


        }
        table1.put(list);

    }

    private  String generateRowKey(String s){

        StringBuffer sb = new StringBuffer(s);
        sb.append("_2016").append(String.format("%02d",ra.nextInt(12)+1))
                .append(String.format("%02d",ra.nextInt(30)+1))
                .append(String.format("%02d",ra.nextInt(24)))
                .append(String.format("%02d",ra.nextInt(60)))
                .append(String.format("%02d",ra.nextInt(60)));

        return sb.toString();

    }
    private String generatePhone(String p){

        StringBuffer sb = new StringBuffer(p);
        sb.append(String.format("%08d",ra.nextInt(999999999)));
        return sb.toString();

    }

    @Test
    public void searchByScanInterval() throws IOException {

        HTable table = new HTable(conf,hbaseInWord);
        Scan scan = new Scan("1531187321_20160200000000".getBytes(),"1531187321_20160301000000".getBytes());
        ResultScanner scanner = table.getScanner(scan);
        Iterator<Result> iterator = scanner.iterator();
        while(iterator.hasNext()){

            Result result = iterator.next();
            Cell column = result.getColumnLatestCell("cfOne".getBytes(),"phone".getBytes());

            byte[] row = CellUtil.cloneRow(column);
            byte[] value = CellUtil.cloneValue(column);

            System.out.println(new String(row) + "  "+ new String(value));

        }

    }

    @Test
    public void findByContition() throws IOException {

        HTable table = new HTable(conf,hbaseInWord);
        Scan scan = new Scan();
        FilterList filterList = new FilterList(FilterList.Operator.MUST_PASS_ALL);
        PrefixFilter prefixFilter = new PrefixFilter("1531187321_201610".getBytes());
        SingleColumnValueFilter singleColumnValueFilter = new SingleColumnValueFilter("cfOne".getBytes(), "type".getBytes(), CompareFilter.CompareOp.EQUAL, "1".getBytes());
        filterList.addFilter(prefixFilter);
        filterList.addFilter(singleColumnValueFilter);
        scan.setFilter(filterList);

        ResultScanner scanner = table.getScanner(scan);
        Iterator<Result> iterator = scanner.iterator();
        while(iterator.hasNext()){

            Result result = iterator.next();
            Cell columnLatestCell = result.getColumnLatestCell("cfOne".getBytes(),"phone".getBytes());
            byte[] va = CellUtil.cloneValue(columnLatestCell);
            byte[] row = CellUtil.cloneRow(columnLatestCell);
            System.out.println(new String(row) +"  "+new String(va));
}


    }












}