使用Java API对HBase进行操作

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.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
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.io.BatchUpdate;

@SuppressWarnings("deprecation")
public class HBaseTestCase {

static HBaseConfiguration cfg = null;
static {
Configuration HBASE_CONFIG = new Configuration();
HBASE_CONFIG.set("hbase.zookeeper.quorum", "192.168.50.216");
HBASE_CONFIG.set("hbase.zookeeper.property.clientPort", "2181");
cfg = new HBaseConfiguration(HBASE_CONFIG);
}

/**
* 创建一张表
*/
public static void creatTable(String tablename) throws Exception {
HBaseAdmin admin = new HBaseAdmin(cfg);
if (admin.tableExists(tablename)) {
System.out.println("table   Exists!!!");
}
else{
HTableDescriptor tableDesc = new HTableDescriptor(tablename);
tableDesc.addFamily(new HColumnDescriptor("name:"));
admin.createTable(tableDesc);
System.out.println("create table ok .");
}

}

/**
* 添加一条数据
*/
public static void addData (String tablename) throws Exception{
HTable table = new HTable(cfg, tablename);
BatchUpdate update = new BatchUpdate("Huangyi");
update.put("name:java", "http://www.javabloger.com".getBytes());
table.commit(update);
System.out.println("add data ok .");
}

/**
* 显示所有数据
*/
public static void getAllData (String tablename) throws Exception{
HTable table = new HTable(cfg, tablename);
Scan s = new Scan();
ResultScanner ss = table.getScanner(s);
for(Result r:ss){
for(KeyValue kv:r.raw()){
System.out.print(new String(kv.getColumn()));
System.out.println(new String(kv.getValue()    ));
}

}
}

public static void  main (String [] agrs) {
try {
String tablename="tablename";
HBaseTestCase.creatTable(tablename);
HBaseTestCase.addData(tablename);
HBaseTestCase.getAllData(tablename);
}
catch (Exception e) {
e.printStackTrace();
}

}

}