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();   
}   
}   
}