HBase（1.2.6）+Eclipse+maven （单机模式）

来源：互联网发布：淘宝pc端源代码编辑：程序博客网时间：2024/05/17 23:24

参考博客：
http://blog.csdn.net/lixibin0829/article/details/78375417
http://www.cnblogs.com/foreverstars/p/5818015.html
…
一、先启动HBase，然后打开HBase shell

二、在Eclipse上配置HBase

1. 新建一个maven项目2. 导入hbase相关的jar3. 在该项目下创建一个新文件夹conf，里面放入hbase的相关配置文件hbase-site.xml（hbase-site.xml的配置参见上一篇文章）4. 右键项目 Buid Path->Configure build path

在Libraries里Add Class Folder，然后Apply，OK
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5. 新建一个包，包里新建一个类，代码如下：

import java.io.IOException;  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.client.Get;  import org.apache.hadoop.hbase.client.HBaseAdmin;  import org.apache.hadoop.hbase.client.HTable;  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.util.Bytes;  public class HBaseTestCase {                 //声明静态配置 HBaseConfiguration      static Configuration cfg=HBaseConfiguration.create();      //创建一张表，通过HBaseAdmin HTableDescriptor来创建      public static void creat(String tablename,String columnFamily) throws Exception {          HBaseAdmin admin = new HBaseAdmin(cfg);          if (admin.tableExists(tablename)) {              System.out.println("table Exists!");              System.exit(0);          }          else{              HTableDescriptor tableDesc = new HTableDescriptor(tablename);              tableDesc.addFamily(new HColumnDescriptor(columnFamily));              admin.createTable(tableDesc);              System.out.println("create table success!");          }      }      //添加一条数据，通过HTable Put为已经存在的表来添加数据      public static void put(String tablename,String row, String columnFamily,String column,String data) throws Exception {          HTable table = new HTable(cfg, tablename);          Put p1=new Put(Bytes.toBytes(row));          p1.add(Bytes.toBytes(columnFamily), Bytes.toBytes(column), Bytes.toBytes(data));          table.put(p1);          System.out.println("put '"+row+"','"+columnFamily+":"+column+"','"+data+"'");      }     public static void get(String tablename,String row) throws IOException{              HTable table=new HTable(cfg,tablename);              Get g=new Get(Bytes.toBytes(row));                  Result result=table.get(g);                  System.out.println("Get: "+result);      }      //显示所有数据，通过HTable Scan来获取已有表的信息      public static void scan(String tablename) throws Exception{           HTable table = new HTable(cfg, tablename);           Scan s = new Scan();           ResultScanner rs = table.getScanner(s);           for(Result r:rs){               System.out.println("Scan: "+r);           }      }      public static boolean delete(String tablename) throws IOException{              HBaseAdmin admin=new HBaseAdmin(cfg);              if(admin.tableExists(tablename)){                      try                      {                              admin.disableTable(tablename);                              admin.deleteTable(tablename);                      }catch(Exception ex){                              ex.printStackTrace();                              return false;                      }              }              return true;      }      public static void  main (String [] agrs) {              String tablename="hbase_tb";          String columnFamily="cf";              try {                                   HBaseTestCase.creat(tablename, columnFamily);              HBaseTestCase.put(tablename, "row1", columnFamily, "cl1", "data");              HBaseTestCase.get(tablename, "row1");              HBaseTestCase.scan(tablename);   /*           if(true==HBaseTestCase.delete(tablename))                     System.out.println("Delete table:"+tablename+"success!");  */                     }          catch (Exception e) {              e.printStackTrace();          }      }

然后运行，即成功

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