Hbase 常用工具类详解编程语言

import java.io.IOException;   
import java.util.ArrayList;   
import java.util.List;   
 
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.MasterNotRunningException;   
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.HConnection; 
import org.apache.hadoop.hbase.client.HConnectionManager; 
import org.apache.hadoop.hbase.client.HTable;   
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 org.apache.hadoop.hbase.filter.Filter;   
import org.apache.hadoop.hbase.filter.FilterList;   
import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;   
import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;   
import org.apache.hadoop.hbase.util.Bytes;   
 
/** 
 * 
 * @author create by khj 
 * 
 */ 
@SuppressWarnings("all") 
public class OperHbaseUtil {   
 
    public static Configuration configuration; 
     
    private static HConnection conn = null; 
     
    static {    
        configuration = HBaseConfiguration.create(); 
        configuration.set("hbase.zookeeper.property.clientPort", "2181"); 
        configuration.set("hbase.zookeeper.quorum", "192.168.1.100"); 
        try { 
            conn = HConnectionManager.createConnection(configuration); 
        } catch (IOException e) { 
            e.printStackTrace(); 
        } 
    }   
 
    public static void main(String[] args) {   
  
    }   
 
    /** 
     * 创建表 
     * @param tableName 
     */   
     
    public static void createTable(String tableName) {   
        System.out.println("start create table ......");   
        try {   
            HBaseAdmin hBaseAdmin = new HBaseAdmin(configuration);   
            if (hBaseAdmin.tableExists(tableName)) {// 如果存在要创建的表，那么先删除，再创建   
                hBaseAdmin.disableTable(tableName);   
                hBaseAdmin.deleteTable(tableName);   
                System.out.println(tableName + " is exist,detele....");   
            }   
            HTableDescriptor tableDescriptor = new HTableDescriptor(tableName);   
            tableDescriptor.addFamily(new HColumnDescriptor("column1"));   
            tableDescriptor.addFamily(new HColumnDescriptor("column2"));   
            tableDescriptor.addFamily(new HColumnDescriptor("column3"));   
            hBaseAdmin.createTable(tableDescriptor);   
        } catch (MasterNotRunningException e) {   
            e.printStackTrace();   
        } catch (ZooKeeperConnectionException e) {   
            e.printStackTrace();   
        } catch (IOException e) {   
            e.printStackTrace();   
        }   
        System.out.println("end create table ......");   
    }   
 
    /** 
     * 插入数据 
     * @param tableName 
     */   
    public static void insertData(String tableName) {   
        System.out.println("start insert data ......");   
        HTablePool pool = new HTablePool(configuration, 1000);   
        HTable table = (HTable) pool.getTable(tableName);   
        Put put = new Put("112233bbbcccc".getBytes());// 一个PUT代表一行数据，再NEW一个PUT表示第二行数据,每行一个唯一的ROWKEY，此处rowkey为put构造方法中传入的值   
        put.add("column1".getBytes(), null, "name".getBytes());// 本行数据的第一列   
        put.add("column2".getBytes(), null, "type".getBytes());// 本行数据的第三列   
        put.add("column3".getBytes(), null, "desc".getBytes());// 本行数据的第三列   
        try {   
            table.put(put);   
        } catch (IOException e) {   
            e.printStackTrace();   
        }   
        System.out.println("end insert data ......");   
    }   
 
    /** 
     * 删除一张表 
     * @param tableName 
     */   
    public static void dropTable(String tableName) {   
        try {   
            HBaseAdmin admin = new HBaseAdmin(configuration);   
            admin.disableTable(tableName);   
            admin.deleteTable(tableName);   
        } catch (MasterNotRunningException e) {   
            e.printStackTrace();   
        } catch (ZooKeeperConnectionException e) {   
            e.printStackTrace();   
        } catch (IOException e) {   
            e.printStackTrace();   
        }   
 
    }   
    /** 
     * 根据 rowkey删除一条记录 
     * @param tablename 
     * @param rowkey 
     */   
     public static void deleteRow(String tablename, String rowkey)  {   
        try {   
            HTable table = new HTable(configuration, tablename);   
            List list = new ArrayList();   
            Delete d1 = new Delete(rowkey.getBytes());   
            list.add(d1);   
               
            table.delete(list);   
            System.out.println("删除行成功!");   
               
        } catch (IOException e) {   
            e.printStackTrace();   
        }   
           
 
    }   
 
     /** 
      * 组合条件删除 
      * @param tablename 
      * @param rowkey 
      */   
     public static void deleteByCondition(String tablename, String rowkey)  {   
            //目前还没有发现有效的API能够实现 根据非rowkey的条件删除 这个功能能，还有清空表全部数据的API操作   
 
    }   
 
 
    /** 
     * 查询所有数据 
     * @param tableName 
     */   
    public static void QueryAll(String tableName) {   
        HTablePool pool = new HTablePool(configuration, 1000);   
        HTable table = (HTable) pool.getTable(tableName);   
        try {   
            ResultScanner rs = table.getScanner(new Scan());   
            for (Result r : rs) {   
                System.out.println("获得到rowkey:" + new String(r.getRow()));   
                for (KeyValue keyValue : r.raw()) {   
                    System.out.println("列：" + new String(keyValue.getFamily())   
                            + "====值:" + new String(keyValue.getValue()));   
                }   
            }   
        } catch (IOException e) {   
            e.printStackTrace();   
        }   
    }   
 
    /** 
     * 单条件查询,根据rowkey查询唯一一条记录 
     * @param tableName 
     */   
    public static void QueryByCondition1(String tableName) {   
 
        HTablePool pool = new HTablePool(configuration, 1000);   
        HTable table = (HTable) pool.getTable(tableName);   
        try {   
            Get scan = new Get("abcdef".getBytes());// 根据rowkey查询   
            Result r = table.get(scan);   
            System.out.println("获得到rowkey:" + new String(r.getRow()));   
            for (KeyValue keyValue : r.raw()) {   
                System.out.println("列：" + new String(keyValue.getFamily())   
                        + "====值:" + new String(keyValue.getValue()));   
            }   
        } catch (IOException e) {   
            e.printStackTrace();   
        }   
    }   
 
    /** 
     * 单条件按查询，查询多条记录 
     * @param tableName 
     */   
    public static void QueryByCondition2(String tableName) {   
 
        try {   
            HTablePool pool = new HTablePool(configuration, 1000);   
            HTable table = (HTable) pool.getTable(tableName);   
            Filter filter = new SingleColumnValueFilter(Bytes   
                    .toBytes("column1"), null, CompareOp.EQUAL, Bytes   
                    .toBytes("name")); // 当列column1的值为aaa时进行查询   
            Scan s = new Scan();   
            s.setFilter(filter);   
            ResultScanner rs = table.getScanner(s);   
            for (Result r : rs) {   
                System.out.println("获得到rowkey:" + new String(r.getRow()));   
                for (KeyValue keyValue : r.raw()) {   
                    System.out.println("列：" + new String(keyValue.getFamily())   
                            + "====值:" + new String(keyValue.getValue()));   
                }   
            }   
        } catch (Exception e) {   
            e.printStackTrace();   
        }   
 
    }   
 
    /** 
     * 组合条件查询 
     * @param tableName 
     */   
    public static void QueryByCondition3(String tableName) {   
 
        try {   
            HTablePool pool = new HTablePool(configuration, 1000);   
            HTable table = (HTable) pool.getTable(tableName);   
 
            List<Filter> filters = new ArrayList<Filter>();   
 
            Filter filter1 = new SingleColumnValueFilter(Bytes   
                    .toBytes("column1"), null, CompareOp.EQUAL, Bytes   
                    .toBytes("name"));   
            filters.add(filter1);   
 
            Filter filter2 = new SingleColumnValueFilter(Bytes   
                    .toBytes("column2"), null, CompareOp.EQUAL, Bytes   
                    .toBytes("type"));   
            filters.add(filter2);   
 
            Filter filter3 = new SingleColumnValueFilter(Bytes   
                    .toBytes("column3"), null, CompareOp.EQUAL, Bytes   
                    .toBytes("desc"));   
            filters.add(filter3);   
 
            FilterList filterList1 = new FilterList(filters);   
 
            Scan scan = new Scan();   
            scan.setFilter(filterList1);   
            ResultScanner rs = table.getScanner(scan);   
            for (Result r : rs) {   
                System.out.println("获得到rowkey:" + new String(r.getRow()));   
                for (KeyValue keyValue : r.raw()) {   
                    System.out.println("列：" + new String(keyValue.getFamily())   
                            + "====值:" + new String(keyValue.getValue()));   
                }   
            }   
            rs.close();   
 
        } catch (Exception e) {   
            e.printStackTrace();   
        }   
 
    }   
 
}