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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