java实现hbase表创建、数据插入、删除表

近日查看了相关资料后，梳理了一下用java实现hbase的表创建、数据插入、删除表，代码如下：

1、需要的jar包：

commons-codec-1.4.jar

commons-logging-1.0.4.jar

hadoop-0.20.2-core.jar

hbase-0.20.6.jar

log4j-1.2.15.jar

zookeeper-3.2.2.jar

 

2、代码：

[java:nogutter] view plaincopy

1. package org.myhbase;  
2.   
3. import java.io.IOException;  
4.   
5. import org.apache.hadoop.conf.Configuration;  
6. import org.apache.hadoop.hbase.HBaseConfiguration;  
7. import org.apache.hadoop.hbase.HColumnDescriptor;  
8. import org.apache.hadoop.hbase.HTableDescriptor;  
9. import org.apache.hadoop.hbase.KeyValue;  
10. import org.apache.hadoop.hbase.client.HBaseAdmin;  
11. import org.apache.hadoop.hbase.client.HTable;  
12. import org.apache.hadoop.hbase.client.Result;  
13. import org.apache.hadoop.hbase.client.ResultScanner;  
14. import org.apache.hadoop.hbase.client.Scan;  
15. import org.apache.hadoop.hbase.io.BatchUpdate;  
16.   
17. public class HBaseBasic02 {  
18.     static HBaseConfiguration hbaseConfig=null;  
19.     static{  
20.         Configuration config=new Configuration();  
21.         config.set("hbase.zookeeper.quorum","192.168.10.149,192.168.10.44,192.168.10.49");  
22.         config.set("hbase.zookeeper.property.clientPort", "2181");  
23.         hbaseConfig=new HBaseConfiguration(config);  
24.     }  
25.       
26.     /** 
27.      * 创建一张表 
28.      * @throws IOException  
29.      */  
30.     public static void createTable(String tablename) throws IOException{  
31.         HBaseAdmin admin = new HBaseAdmin(hbaseConfig);  
32.         if(admin.tableExists(tablename)){  
33.             System.out.println("table Exists!!!");  
34.         }else{  
35.             HTableDescriptor tableDesc = new HTableDescriptor(tablename);  
36.             tableDesc.addFamily(new HColumnDescriptor("name:"));  
37.             admin.createTable(tableDesc);  
38.             System.out.println("create table ok.");  
39.         }  
40.     }  
41.       
42.     /** 
43.      * 删除一张表 
44.      * @throws IOException  
45.      */  
46.     public static void dropTable(String tablename) throws IOException{  
47.         HBaseAdmin admin = new HBaseAdmin(hbaseConfig);  
48.         admin.disableTable(tablename);  
49.         admin.deleteTable(tablename);  
50.         System.out.println("drop table ok.");  
51.     }  
52.       
53.       
54.     /** 
55.      * 添加一条数据 
56.      * @throws IOException  
57.      */  
58.     public static void addData(String tablename) throws IOException{  
59.         HTable table=new HTable(hbaseConfig,tablename);  
60.         BatchUpdate update=new BatchUpdate("Huangyi");  
61.         update.put("name:java","http://www.sun.com".getBytes());  
62.         table.commit(update);  
63.         System.out.println("add data ok.");  
64.     }  
65.       
66.       
67.     /** 
68.      * 显示所有数据 
69.      * @throws IOException  
70.      */  
71.     public static void getAllData(String tablename) throws IOException{  
72.         HTable table=new HTable(hbaseConfig,tablename);  
73.         Scan s=new Scan();  
74.         ResultScanner rs=table.getScanner(s);  
75.         for(Result r:rs){  
76.             for(KeyValue kv:r.raw()){  
77.                 System.out.println("rowkey : "+new String(kv.getRow()));  
78.                 System.out.println(new String(kv.getColumn())+" = "+new String(kv.getValue()));  
79.             }  
80.         }  
81.     }  
82.       
83.     public static void main(String [] args) throws IOException{  
84.             String tablename="table_1";  
85.             HBaseBasic02.createTable(tablename);  
86.             HBaseBasic02.addData(tablename);  
87.             HBaseBasic02.getAllData(tablename);  
88.             HBaseBasic02.dropTable(tablename);  
89.     }  
90.       
91.       
92. }