（转） 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。

 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 }

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