开发环境：

hadoop: hadoop-1.1.2

hbase: hbase-0.94.11-security

eclipse:Juno Service Release 2

配置Eclipse

通过 Eclipse 创建一个新 Java 工程，右击项目根目录，选择“Properties> Java Build Path> Library>  Add  External  JARs”，将 HBase 安装文件解压后根目录下的hbase-0.94.11-security.jar、hbase-0.94.11-security-tests.jar 和 lib 子目录下所有的 jar 包添加到本工程的 Build Path下。

示例一：输出表“users”的列族名称

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.HBaseAdmin;

import org.apache.hadoop.hbase.util.Bytes;

public class ExampleClient {

	public static void main(String[] args) throws IOException {

		  Configuration conf = HBaseConfiguration.create();

		  conf.set("hbase.zookeeper.quorum", "master");

		  conf.set("hbase.zookeeper.property.clientPort", "2181");

		  HBaseAdmin admin = new HBaseAdmin(conf);

		  HTableDescriptor tableDescriptor = admin.getTableDescriptor(Bytes.toBytes("users"));

		  byte[] name = tableDescriptor.getName();

		  System.out.println("result:");

		  System.out.println("table name: "+ new String(name));

		  HColumnDescriptor[] columnFamilies = tableDescriptor

				  .getColumnFamilies();

		  for(HColumnDescriptor d : columnFamilies){

			  System.out.println("column Families: "+ d.getNameAsString());

			  }

	    }

}

结果：

2013-09-09 15:58:51,890 WARN  conf.Configuration (Configuration.java:<clinit>(195)) - DEPRECATED: hadoop-site.xml found in the classpath. Usage of hadoop-site.xml is deprecated. Instead use core-site.xml, mapred-site.xml and hdfs-site.xml to override properties of core-default.xml, mapred-default.xml and hdfs-default.xml respectively

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:zookeeper.version=3.4.5-1392090, built on 09/30/2012 17:52 GMT

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:host.name=w253245.ppp.asahi-net.or.jp

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.version=1.6.0_10-rc2

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.vendor=Sun Microsystems Inc.

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.home=C:\Java\jre6

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.class.path=D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\bin;D:\workspace\Eclipse-jee\hadoop-1.1.2\build\eclipse\classes-main;D:\workspace\Eclipse-jee\hadoop-1.1.2\build\eclipse\classes-test;D:\workspace\Eclipse-jee\hadoop-1.1.2\build\eclipse\classes-test-generated;D:\workspace\Eclipse-jee\hadoop-1.1.2\build\eclipse\classes-tools;D:\workspace\Eclipse-jee\hadoop-1.1.2\build\eclipse\classes-example;C:\apache-ant-1.9.2\lib\ant.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\asm-3.2.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\aspectjrt-1.6.11.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\aspectjtools-1.6.11.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-beanutils-1.7.0.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-beanutils-core-1.8.0.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-cli-1.2.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-codec-1.4.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-collections-3.2.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-configuration-1.6.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-daemon-1.0.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-digester-1.8.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-el-1.0.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-httpclient-3.0.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-io-2.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-lang-2.4.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-logging-1.1.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-logging-api-1.0.4.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-math-2.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\commons-net-3.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\core-3.1.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\hadoop-capacity-scheduler-1.1.2.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\hadoop-fairscheduler-1.1.2.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\hadoop-thriftfs-1.1.2.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\hsqldb-1.8.0.10.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jackson-core-asl-1.8.8.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jackson-mapper-asl-1.8.8.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jasper-compiler-5.5.12.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jasper-runtime-5.5.12.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jdeb-0.8.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jersey-core-1.8.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jersey-json-1.8.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jersey-server-1.8.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jets3t-0.6.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jetty-6.1.26.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jetty-util-6.1.26.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jsch-0.1.42.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jsp-2.1\jsp-2.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\jsp-2.1\jsp-api-2.1.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\junit-4.5.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\kfs-0.2.2.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\log4j-1.2.15.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\mockito-all-1.8.5.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\oro-2.0.8.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\servlet-api-2.5-20081211.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\slf4j-api-1.4.3.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\slf4j-log4j12-1.4.3.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\lib\xmlenc-0.52.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\src\test\lib\ftplet-api-1.0.0-SNAPSHOT.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\src\test\lib\ftpserver-core-1.0.0-SNAPSHOT.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\src\test\lib\ftpserver-server-1.0.0-SNAPSHOT.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\src\test\lib\mina-core-2.0.0-M2-20080407.124109-12.jar;D:\workspace\Eclipse-jee\hadoop-1.1.2\conf;D:\workspace\Eclipse-jee\hadoop-1.1.2\build\eclipse\test-resources;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\activation-1.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\asm-3.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\avro-1.5.3.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\avro-1.7.4.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\avro-ipc-1.5.3.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-beanutils-1.7.0.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-beanutils-core-1.8.0.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-cli-1.2.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-codec-1.4.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-collections-3.2.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-configuration-1.6.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-digester-1.8.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-el-1.0.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-httpclient-3.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-io-2.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-lang-2.5.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-logging-1.1.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-math-2.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\commons-net-1.4.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\core-3.1.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\guava-11.0.2.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\hadoop-common-0.23.9-javadoc.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\hamcrest-all-1.3.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\hamcrest-core-1.3.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\hbase-0.94.11-security.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\hbase-0.94.11-security-tests.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\high-scale-lib-1.1.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\httpclient-4.1.2.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\httpcore-4.1.3.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jackson-core-asl-1.8.8.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jackson-jaxrs-1.8.8.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jackson-mapper-asl-1.8.8.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jackson-xc-1.8.8.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jamon-runtime-2.3.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jasper-compiler-5.5.23.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jasper-runtime-5.5.23.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jaxb-api-2.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jaxb-impl-2.2.3-1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jersey-core-1.8.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jersey-json-1.8.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jersey-server-1.8.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jettison-1.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jetty-6.1.26.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jetty-util-6.1.26.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jruby-complete-1.6.5.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jsp-2.1-6.1.14.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jsp-api-2.1-6.1.14.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\jsr305-1.3.9.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\junit-4.10-HBASE-1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\libthrift-0.8.0.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\log4j-1.2.16.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\metrics-core-2.1.2.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\mrunit-1.0.0-hadoop2.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\mrunit-1.0.0-javadoc.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\netty-3.2.4.Final.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\protobuf-java-2.4.0a.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\servlet-api-2.5-6.1.14.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\slf4j-api-1.4.3.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\slf4j-log4j12-1.4.3.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\snappy-java-1.0.3.2.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\stax-api-1.0.1.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\velocity-1.7.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\xmlenc-0.52.jar;D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht\build\zookeeper-3.4.5.jar

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.library.path=D:\workspace\Eclipse-jee\hadoop-1.1.21\lib\native;D:\workspace\Eclipse-jee\hadoop-1.1.21\lib\native

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.io.tmpdir=C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.compiler=<NA>

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:os.name=Windows XP

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:os.arch=x86

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:os.version=5.1

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:user.name=hadoop

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:user.home=C:\Documents and Settings\Administrator

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:user.dir=D:\workspace\Eclipse-jee\Hadoop_APPs_U_tht

2013-09-09 15:58:55,031 INFO  zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=master:2181 sessionTimeout=180000 watcher=hconnection

2013-09-09 15:58:56,171 INFO  zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(104)) - The identifier of this process is 6032@tht

2013-09-09 15:58:56,234 INFO  zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server master/121.1.253.251:2181. Will not attempt to authenticate using SASL (无法定位登录配置)

2013-09-09 15:58:56,296 INFO  zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to master/121.1.253.251:2181, initiating session

2013-09-09 15:58:56,484 INFO  zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server master/121.1.253.251:2181, sessionid = 0x141011ad7db000e, negotiated timeout = 180000

result:

table name: users

column Families: address

column Families: info

column Families: user_id

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