Hbase提供了丰富的Java API，以及线程池操作，下面我用线程池来展示一下使用Java API操作Hbase。

项目结构如下：

我使用的Hbase的版本是

hbase-0.98.9-hadoop2-bin.tar.gz

大家下载后，可以拿到里面的lib目录下面的jar文件，即上所示的hbase-lib资源。

接口类：

/hbase-util/src/com/b510/hbase/util/dao/HbaseDao.java

 package com.b510.hbase.util.dao;

 import java.util.List;

 import org.apache.hadoop.hbase.client.HTableInterface;

 /**

  * @author Hongten

  * @created 7 Nov 2018

  */

 public interface HbaseDao {

     // initial table

     public HTableInterface getHTableFromPool(String tableName);

     // check if the table is exist

     public boolean isHTableExist(String tableName);

     // create table

     public void createHTable(String tableName, String[] columnFamilys);

     // insert new row

     public void addRow(String tableName, String rowKey, String columnFamily, String column, String value);

     // get row by row key

     public void getRow(String tableName, String rowKey);

     public void getAllRows(String tableName);

     // get rows by giving range

     public void getRowsByRange(String tableName, String startRowKey, String endRowKey);

     //delete row

     public void delRow(String tableName, String rowKey);

     //delete rows by row keys

     public void delRowsByRowKeys(String tableName, List<String> rowKeys);

     // auto flush data when close

     public void closeAutoFlush(HTableInterface table);

     // close table

     public void closeTable(HTableInterface table);

     // close pool connection

     public void closePoolConnection();

     // delete table

     public void deleteHTable(String tableName);

 }

实现类：

/hbase-util/src/com/b510/hbase/util/dao/impl/HbaseDaoImpl.java

 package com.b510.hbase.util.dao.impl;

 import java.io.IOException;

 import java.util.List;

 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.HColumnDescriptor;

 import org.apache.hadoop.hbase.HTableDescriptor;

 import org.apache.hadoop.hbase.MasterNotRunningException;

 import org.apache.hadoop.hbase.TableName;

 import org.apache.hadoop.hbase.ZooKeeperConnectionException;

 import org.apache.hadoop.hbase.client.Delete;

 import org.apache.hadoop.hbase.client.Get;

 import org.apache.hadoop.hbase.client.HBaseAdmin;

 import org.apache.hadoop.hbase.client.HTableInterface;

 import org.apache.hadoop.hbase.client.HTablePool;

 import org.apache.hadoop.hbase.client.Put;

 import org.apache.hadoop.hbase.client.Result;

 import org.apache.hadoop.hbase.client.ResultScanner;

 import org.apache.hadoop.hbase.client.Scan;

 import com.b510.hbase.util.dao.HbaseDao;

 /**

  * @author Hongten

  * @created 7 Nov 2018

  */

 @SuppressWarnings("deprecation")

 public class HbaseDaoImpl implements HbaseDao {

     private static Configuration conf = null;

     private static HBaseAdmin hAdmin;

     private static HTablePool pool;

     private static int defaultPoolSize = 5;

     public HbaseDaoImpl(int poolSize) {

         conf = HBaseConfiguration.create();

         conf.set("hbase.zookeeper.quorum", "node1:2888,node2:2888,node3:2888");

         try {

             hAdmin = new HBaseAdmin(conf);

             // the default pool size is 5.

             pool = new HTablePool(conf, poolSize <= 0 ? defaultPoolSize : poolSize);

         } catch (MasterNotRunningException e) {

             e.printStackTrace();

         } catch (ZooKeeperConnectionException e) {

             e.printStackTrace();

         } catch (IOException e) {

             e.printStackTrace();

         }

     }

     @Override

     public HTableInterface getHTableFromPool(String tableName) {

         HTableInterface table = pool.getTable(tableName);

         return table;

     }

     @Override

     public boolean isHTableExist(String tableName) {

         try {

             return hAdmin.tableExists(tableName);

         } catch (IOException e) {

             e.printStackTrace();

         }

         return false;

     }

     @Override

     public void createHTable(String tableName, String[] columnFamilys) {

         if (!isHTableExist(tableName)) {

             HTableDescriptor tableDescriptor = new HTableDescriptor(TableName.valueOf(tableName));

             // The Hbase suggested the number of column family should be less than 3.

             // Normally, there only have 1 column family.

             for (String cfName : columnFamilys) {

                 HColumnDescriptor hColumnDescriptor = new HColumnDescriptor(cfName);

                 tableDescriptor.addFamily(hColumnDescriptor);

             }

             try {

                 hAdmin.createTable(tableDescriptor);

             } catch (IOException e) {

                 e.printStackTrace();

             }

             System.out.println("The table [" + tableName + "]  is created.");

         } else {

             System.out.println("The table [" + tableName + "]  is existing already.");

         }

     }

     @Override

     public void addRow(String tableName, String rowKey, String columnFamily, String column, String value) {

         if (isHTableExist(tableName)) {

             HTableInterface table = getHTableFromPool(tableName);

             Put put = new Put(rowKey.getBytes());

             put.add(columnFamily.getBytes(), column.getBytes(), value.getBytes());

             try {

                 table.put(put);

             } catch (IOException e) {

                 e.printStackTrace();

             }

             System.out.println("Insert into table [" + tableName + "], Rowkey=[" + rowKey + "], Column=[" + columnFamily + ":" + column + "], Vlaue=[" + value + "].");

             closeTable(table);

         } else {

             System.out.println("The table [" + tableName + "] does not exist.");

         }

     }

     @Override

     public void getRow(String tableName, String rowKey) {

         if (isHTableExist(tableName)) {

             HTableInterface table = getHTableFromPool(tableName);

             Get get = new Get(rowKey.getBytes());

             Result result;

             try {

                 result = table.get(get);

                 String columnName = "";

                 String timeStamp = "";

                 String columnFamily = "";

                 String value = "";

                 for (Cell cell : result.rawCells()) {

                     timeStamp = String.valueOf(cell.getTimestamp());

                     columnFamily = new String(CellUtil.cloneFamily(cell));

                     columnName = new String(CellUtil.cloneQualifier(cell));

                     value = new String(CellUtil.cloneValue(cell));

                     System.out.println("Get from table [" + tableName + "], Rowkey=[" + rowKey + "], Column=[" + columnFamily + ":" + columnName + "], Timestamp=[" + timeStamp + "], Vlaue=[" + value + "].");

                 }

             } catch (IOException e) {

                 e.printStackTrace();

             }

             closeTable(table);

         } else {

             System.out.println("The table [" + tableName + "] does not exist.");

         }

     }

     @Override

     public void getAllRows(String tableName) {

         if (isHTableExist(tableName)) {

             Scan scan = new Scan();

             scanHTable(tableName, scan);

         } else {

             System.out.println("The table [" + tableName + "] does not exist.");

         }

     }

     private void scanHTable(String tableName, Scan scan) {

         try {

             HTableInterface table = getHTableFromPool(tableName);

             ResultScanner results = table.getScanner(scan);

             for (Result result : results) {

                 String rowKey = "";

                 String columnName = "";

                 String timeStamp = "";

                 String columnFamily = "";

                 String value = "";

                 for (Cell cell : result.rawCells()) {

                     rowKey = new String(CellUtil.cloneRow(cell));

                     timeStamp = String.valueOf(cell.getTimestamp());

                     columnFamily = new String(CellUtil.cloneFamily(cell));

                     columnName = new String(CellUtil.cloneQualifier(cell));

                     value = new String(CellUtil.cloneValue(cell));

                     System.out.println("Get from table [" + tableName + "], Rowkey=[" + rowKey + "], Column=[" + columnFamily + ":" + columnName + "], Timestamp=[" + timeStamp + "], Vlaue=[" + value + "].");

                 }

             }

             closeTable(table);

         } catch (IOException e) {

             e.printStackTrace();

         }

     }

     @Override

     public void getRowsByRange(String tableName, String startRowKey, String endRowKey) {

         if (isHTableExist(tableName)) {

             Scan scan = new Scan();

             scan.setStartRow(startRowKey.getBytes());

             // not equals Stop Row Key, it mean the result does not include the stop row record(exclusive).

             // the hbase version is 0.98.9

             scan.setStopRow(endRowKey.getBytes());

             scanHTable(tableName, scan);

         } else {

             System.out.println("The table [" + tableName + "] does not exist.");

         }

     }

     @Override

     public void delRow(String tableName, String rowKey) {

         if (isHTableExist(tableName)) {

             HTableInterface table = getHTableFromPool(tableName);

             deleteRow(table, rowKey);

         } else {

             System.out.println("The table [" + tableName + "] does not exist.");

         }

     }

     private void deleteRow(HTableInterface table, String rowKey) {

         Delete del = new Delete(rowKey.getBytes());

         try {

             table.delete(del);

             System.out.println("Delete from table [" + new String(table.getTableName()) + "], Rowkey=[" + rowKey + "].");

             closeTable(table);

         } catch (IOException e) {

             e.printStackTrace();

         }

     }

     @Override

     public void delRowsByRowKeys(String tableName, List<String> rowKeys) {

         if (rowKeys != null && rowKeys.size() > 0) {

             for (String rowKey : rowKeys) {

                 delRow(tableName, rowKey);

             }

         }

     }

     @Override

     public void deleteHTable(String tableName) {

         if (isHTableExist(tableName)) {

             try {

                 hAdmin.disableTable(tableName.getBytes());

                 hAdmin.deleteTable(tableName.getBytes());

                 System.out.println("The table [" + tableName + "] is deleted.");

             } catch (IOException e) {

                 e.printStackTrace();

             }

         } else {

             System.out.println("The table [" + tableName + "] does not exist.");

         }

     }

     @Override

     public void closeAutoFlush(HTableInterface table) {

         table.setAutoFlush(false, false);

     }

     @Override

     public void closeTable(HTableInterface table) {

         try {

             table.close();

         } catch (IOException e) {

             e.printStackTrace();

         }

     }

     @Override

     public void closePoolConnection() {

         try {

             pool.close();

         } catch (IOException e) {

             e.printStackTrace();

         }

     }

 }

测试类：

/hbase-util/src/com/b510/hbase/util/dao/test/HbaseDaoTest.java

 package com.b510.hbase.util.dao.test;

 import java.util.ArrayList;

 import java.util.List;

 import org.junit.Test;

 import com.b510.hbase.util.dao.HbaseDao;

 import com.b510.hbase.util.dao.impl.HbaseDaoImpl;

 /**

  * @author Hongten

  * @created 7 Nov 2018

  */

 public class HbaseDaoTest {

     HbaseDao dao = new HbaseDaoImpl(4);

     public static final String tableName = "t_test";

     public static final String columnFamilyName = "cf1";

     public static final String[] CFs = { columnFamilyName };

     public static final String COLUMN_NAME_NAME = "name";

     public static final String COLUMN_NAME_AGE = "age";

     @Test

     public void main() {

         createTable();

         addRow();

         getRow();

         getAllRows();

         getRowsByRange();

         delRow();

         delRowsByRowKeys();

         deleteHTable();

     }

     public void createTable() {

         System.out.println("=== create table ====");

         dao.createHTable(tableName, CFs);

     }

     public void addRow() {

         System.out.println("=== insert record ====");

         dao.addRow(tableName, "12345566", columnFamilyName, COLUMN_NAME_NAME, "Hongten");

         dao.addRow(tableName, "12345566", columnFamilyName, COLUMN_NAME_AGE, "22");

         dao.addRow(tableName, "12345567", columnFamilyName, COLUMN_NAME_NAME, "Tom");

         dao.addRow(tableName, "12345567", columnFamilyName, COLUMN_NAME_AGE, "25");

         dao.addRow(tableName, "12345568", columnFamilyName, COLUMN_NAME_NAME, "Jone");

         dao.addRow(tableName, "12345568", columnFamilyName, COLUMN_NAME_AGE, "30");

         dao.addRow(tableName, "12345569", columnFamilyName, COLUMN_NAME_NAME, "Jobs");

         dao.addRow(tableName, "12345569", columnFamilyName, COLUMN_NAME_AGE, "24");

     }

     public void getRow() {

         System.out.println("=== get record ====");

         dao.getRow(tableName, "12345566");

     }

     public void getAllRows() {

         System.out.println("=== scan table ====");

         dao.getAllRows(tableName);

     }

     public void getRowsByRange() {

         System.out.println("=== scan record by giving range ====");

         // it will return the '12345567' and '12345568' rows.

         dao.getRowsByRange(tableName, "12345567", "12345569");

     }

     public void delRow() {

         System.out.println("=== delete record ====");

         dao.delRow(tableName, "12345568");

         // only '12345567' row.

         getRowsByRange();

     }

     public void delRowsByRowKeys() {

         System.out.println("=== delete batch records ====");

         List<String> rowKeys = new ArrayList<String>();

         rowKeys.add("12345566");

         rowKeys.add("12345569");

         dao.delRowsByRowKeys(tableName, rowKeys);

         // can not find the '12345566' and '12345569'

         getAllRows();

     }

     public void deleteHTable() {

         System.out.println("=== delete table ====");

         dao.deleteHTable(tableName);

     }

 }

测试结果：

log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

=== create table ====

The table [t_test]  is created.

=== insert record ====

Insert into table [t_test], Rowkey=[12345566], Column=[cf1:name], Vlaue=[Hongten].

Insert into table [t_test], Rowkey=[12345566], Column=[cf1:age], Vlaue=[22].

Insert into table [t_test], Rowkey=[12345567], Column=[cf1:name], Vlaue=[Tom].

Insert into table [t_test], Rowkey=[12345567], Column=[cf1:age], Vlaue=[25].

Insert into table [t_test], Rowkey=[12345568], Column=[cf1:name], Vlaue=[Jone].

Insert into table [t_test], Rowkey=[12345568], Column=[cf1:age], Vlaue=[30].

Insert into table [t_test], Rowkey=[12345569], Column=[cf1:name], Vlaue=[Jobs].

Insert into table [t_test], Rowkey=[12345569], Column=[cf1:age], Vlaue=[24].

=== get record ====

Get from table [t_test], Rowkey=[12345566], Column=[cf1:age], Timestamp=[1541652952697], Vlaue=[22].

Get from table [t_test], Rowkey=[12345566], Column=[cf1:name], Timestamp=[1541652952626], Vlaue=[Hongten].

=== scan table ====

Get from table [t_test], Rowkey=[12345566], Column=[cf1:age], Timestamp=[1541652952697], Vlaue=[22].

Get from table [t_test], Rowkey=[12345566], Column=[cf1:name], Timestamp=[1541652952626], Vlaue=[Hongten].

Get from table [t_test], Rowkey=[12345567], Column=[cf1:age], Timestamp=[1541652952779], Vlaue=[25].

Get from table [t_test], Rowkey=[12345567], Column=[cf1:name], Timestamp=[1541652952743], Vlaue=[Tom].

Get from table [t_test], Rowkey=[12345568], Column=[cf1:age], Timestamp=[1541652952834], Vlaue=[30].

Get from table [t_test], Rowkey=[12345568], Column=[cf1:name], Timestamp=[1541652952807], Vlaue=[Jone].

Get from table [t_test], Rowkey=[12345569], Column=[cf1:age], Timestamp=[1541652952928], Vlaue=[24].

Get from table [t_test], Rowkey=[12345569], Column=[cf1:name], Timestamp=[1541652952869], Vlaue=[Jobs].

=== scan record by giving range ====

Get from table [t_test], Rowkey=[12345567], Column=[cf1:age], Timestamp=[1541652952779], Vlaue=[25].

Get from table [t_test], Rowkey=[12345567], Column=[cf1:name], Timestamp=[1541652952743], Vlaue=[Tom].

Get from table [t_test], Rowkey=[12345568], Column=[cf1:age], Timestamp=[1541652952834], Vlaue=[30].

Get from table [t_test], Rowkey=[12345568], Column=[cf1:name], Timestamp=[1541652952807], Vlaue=[Jone].

=== delete record ====

Delete from table [t_test], Rowkey=[12345568].

=== scan record by giving range ====

Get from table [t_test], Rowkey=[12345567], Column=[cf1:age], Timestamp=[1541652952779], Vlaue=[25].

Get from table [t_test], Rowkey=[12345567], Column=[cf1:name], Timestamp=[1541652952743], Vlaue=[Tom].

=== delete batch records ====

Delete from table [t_test], Rowkey=[12345566].

Delete from table [t_test], Rowkey=[12345569].

=== scan table ====

Get from table [t_test], Rowkey=[12345567], Column=[cf1:age], Timestamp=[1541652952779], Vlaue=[25].

Get from table [t_test], Rowkey=[12345567], Column=[cf1:name], Timestamp=[1541652952743], Vlaue=[Tom].

=== delete table ====

The table [t_test] is deleted.

源码下载：

hbase-util.zip

========================================================

More reading,and english is important.

I'm Hongten

大哥哥大姐姐，觉得有用打赏点哦！你的支持是我最大的动力。谢谢。
Hongten博客排名在100名以内。粉丝过千。
Hongten出品，必是精品。

E | hongtenzone@foxmail.com  B | http://www.cnblogs.com/hongten

========================================================

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