Hbase 常用工具類

jopen 9年前發布 | 2K 次閱讀 Java HBase
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) {
}
/**

創建表
@param tableName
*/
public static void createTable(String tableName) {

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

 try {

 HBaseAdmin hBaseAdmin = new HBaseAdmin(configuration);  
 if (hBaseAdmin.tableExists(tableName)) {// 如果存在要創建的表，那么先刪除，再創建  
     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 ......");

}
/**

插入數據
@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());// 一個PUT代表一行數據，再NEW一個PUT表示第二行數據,每行一個唯一的ROWKEY，此處rowkey為put構造方法中傳入的值

 put.add("column1".getBytes(), null, "name".getBytes());// 本行數據的第一列

 put.add("column2".getBytes(), null, "type".getBytes());// 本行數據的第三列

 put.add("column3".getBytes(), null, "desc".getBytes());// 本行數據的第三列

 try {

 table.put(put);  

} catch (IOException e) {

 e.printStackTrace();  

}

 System.out.println("end insert data ......");

}
/**

刪除一張表
@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();  

}
}

/**

根據 rowkey刪除一條記錄
@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("刪除行成功!");  


} catch (IOException e) {

 e.printStackTrace();  

}





}  

 /**
  * 組合條件刪除
  * @param tablename
  * @param rowkey
  */  
 public static void deleteByCondition(String tablename, String rowkey)  {  
        //目前還沒有發現有效的API能夠實現 根據非rowkey的條件刪除 這個功能能，還有清空表全部數據的API操作  

}  


/**
 * 查詢所有數據
 * @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("獲得到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();  
    }  
}  

/**
 * 單條件查詢,根據rowkey查詢唯一一條記錄
 * @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());// 根據rowkey查詢  
        Result r = table.get(scan);  
        System.out.println("獲得到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();  
    }  
}  

/**
 * 單條件按查詢，查詢多條記錄
 * @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")); // 當列column1的值為aaa時進行查詢  
        Scan s = new Scan();  
        s.setFilter(filter);  
        ResultScanner rs = table.getScanner(s);  
        for (Result r : rs) {  
            System.out.println("獲得到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();  
    }  

}  

/**
 * 組合條件查詢
 * @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("獲得到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();  
    }  

}  


}  </pre>
本文由用戶 jopen 自行上傳分享，僅供網友學習交流。所有權歸原作者，若您的權利被侵害，請聯系管理員。
轉載本站原創文章，請注明出處，并保留原始鏈接、圖片水印。
本站是一個以用戶分享為主的開源技術平臺，歡迎各類分享！
本文地址：http://www.baiduhome.net/code/view/1423060228951
Java HBase
Hbase 常用工具類

相關代碼

相關文檔

相關經驗

目錄
