Java操作Hbase进行建表、删表以及对数据进行增删改查，条件查询

1、搭建环境

  新建JAVA项目，添加的包有:

   有关Hadoop的hadoop-core-0.20.204.0.jar

   有关Hbase的hbase-0.90.4.jar、hbase-0.90.4-tests.jar以及Hbase资源包中lib目录下的所有jar包

 

 

001	import java.io.IOException;

002	import java.util.ArrayList;

003	import java.util.List;

004

005	import org.apache.hadoop.conf.Configuration;

006	import org.apache.hadoop.hbase.HBaseConfiguration;

007	import org.apache.hadoop.hbase.HColumnDescriptor;

008	import org.apache.hadoop.hbase.HTableDescriptor;

009	import org.apache.hadoop.hbase.KeyValue;

010	import org.apache.hadoop.hbase.MasterNotRunningException;

011	import org.apache.hadoop.hbase.ZooKeeperConnectionException;

012	import org.apache.hadoop.hbase.client.Delete;

013	import org.apache.hadoop.hbase.client.Get;

014	import org.apache.hadoop.hbase.client.HBaseAdmin;

015	import org.apache.hadoop.hbase.client.HTable;

016	import org.apache.hadoop.hbase.client.HTablePool;

017	import org.apache.hadoop.hbase.client.Put;

018	import org.apache.hadoop.hbase.client.Result;

019	import org.apache.hadoop.hbase.client.ResultScanner;

020	import org.apache.hadoop.hbase.client.Scan;

021	import org.apache.hadoop.hbase.filter.Filter;

022	import org.apache.hadoop.hbase.filter.FilterList;

023	import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;

024	import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;

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

026

027	public class JinTaoTest {

028

029	public static Configuration configuration;

030

static {

031	configuration = HBaseConfiguration.create();

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

033	configuration.set("hbase.zookeeper.quorum", "192.168.1.100");

034	configuration.set("hbase.master", "192.168.1.100:600000");

035

}

036

037	public static void main(String[] args) {

038	// createTable("wujintao");

039	// insertData("wujintao");

040	// QueryAll("wujintao");

041	// QueryByCondition1("wujintao");

042	// QueryByCondition2("wujintao");

043	//QueryByCondition3("wujintao");

044	//deleteRow("wujintao","abcdef");

045	deleteByCondition("wujintao","abcdef");

046

}

047

048

049	public static void createTable(String tableName) {

050	System.out.println("start create table ......");

051

try {

052	HBaseAdmin hBaseAdmin = new HBaseAdmin(configuration);

053	if (hBaseAdmin.tableExists(tableName)) {// 如果存在要创建的表，那么先删除，再创建

054	hBaseAdmin.disableTable(tableName);

055	hBaseAdmin.deleteTable(tableName);

056	System.out.println(tableName + " is exist,detele....");

057

}

058	HTableDescriptor tableDescriptor = new HTableDescriptor(tableName);

059	tableDescriptor.addFamily(new HColumnDescriptor("column1"));

060	tableDescriptor.addFamily(new HColumnDescriptor("column2"));

061	tableDescriptor.addFamily(new HColumnDescriptor("column3"));

062	hBaseAdmin.createTable(tableDescriptor);

063	} catch (MasterNotRunningException e) {

064	e.printStackTrace();

065	} catch (ZooKeeperConnectionException e) {

066	e.printStackTrace();

067	} catch (IOException e) {

068	e.printStackTrace();

069

}

070	System.out.println("end create table ......");

071

}

072

073

074	public static void insertData(String tableName) {

075	System.out.println("start insert data ......");

076	HTablePool pool = new HTablePool(configuration, 1000);

077	HTable table = (HTable) pool.getTable(tableName);

078	Put put = new Put("112233bbbcccc".getBytes());// 一个PUT代表一行数据，再NEW一个PUT表示第二行数据,每行一个唯一的ROWKEY，此处rowkey为put构造方法中传入的值

079	put.add("column1".getBytes(), null, "aaa".getBytes());// 本行数据的第一列

080	put.add("column2".getBytes(), null, "bbb".getBytes());// 本行数据的第三列

081	put.add("column3".getBytes(), null, "ccc".getBytes());// 本行数据的第三列

082

try {

083	table.put(put);

084	} catch (IOException e) {

085	e.printStackTrace();

086

}

087	System.out.println("end insert data ......");

088

}

089

090

091	public static void dropTable(String tableName) {

092

try {

093	HBaseAdmin admin = new HBaseAdmin(configuration);

094	admin.disableTable(tableName);

095	admin.deleteTable(tableName);

096	} catch (MasterNotRunningException e) {

097	e.printStackTrace();

098	} catch (ZooKeeperConnectionException e) {

099	e.printStackTrace();

100	} catch (IOException e) {

101	e.printStackTrace();

102

}

103

104

}

105

106	public static void deleteRow(String tablename, String rowkey)  {

107

try {

108	HTable table = new HTable(configuration, tablename);

109	List list = new ArrayList();

110	Delete d1 = new Delete(rowkey.getBytes());

111	list.add(d1);

112

113	table.delete(list);

114	System.out.println("删除行成功!");

115

116	} catch (IOException e) {

117	e.printStackTrace();

118

}

119

120

121

}

122

123

124	public static void deleteByCondition(String tablename, String rowkey)  {

125	//目前还没有发现有效的API能够实现根据非rowkey的条件删除这个功能能，还有清空表全部数据的API操作

126

127

}

128

129

130

131	public static void QueryAll(String tableName) {

132	HTablePool pool = new HTablePool(configuration, 1000);

133	HTable table = (HTable) pool.getTable(tableName);

134

try {

135	ResultScanner rs = table.getScanner(new Scan());

136	for (Result r : rs) {

137	System.out.println("获得到rowkey:" + new String(r.getRow()));

138	for (KeyValue keyValue : r.raw()) {

139	System.out.println("列：" + new String(keyValue.getFamily())

140	+ "====值:" + new String(keyValue.getValue()));

141

}

142

}

143	} catch (IOException e) {

144	e.printStackTrace();

145

}

146

}

147

148

149	public static void QueryByCondition1(String tableName) {

150

151	HTablePool pool = new HTablePool(configuration, 1000);

152	HTable table = (HTable) pool.getTable(tableName);

153

try {

154	Get scan = new Get("abcdef".getBytes());// 根据rowkey查询

155	Result r = table.get(scan);

156	System.out.println("获得到rowkey:" + new String(r.getRow()));

157	for (KeyValue keyValue : r.raw()) {

158	System.out.println("列：" + new String(keyValue.getFamily())

159	+ "====值:" + new String(keyValue.getValue()));

160

}

161	} catch (IOException e) {

162	e.printStackTrace();

163

}

164

}

165

166

167	public static void QueryByCondition2(String tableName) {

168

169

try {

170	HTablePool pool = new HTablePool(configuration, 1000);

171	HTable table = (HTable) pool.getTable(tableName);

172	Filter filter = new SingleColumnValueFilter(Bytes

173	.toBytes("column1"), null, CompareOp.EQUAL, Bytes

174	.toBytes("aaa")); // 当列column1的值为aaa时进行查询

175	Scan s = new Scan();

176	s.setFilter(filter);

177	ResultScanner rs = table.getScanner(s);

178	for (Result r : rs) {

179	System.out.println("获得到rowkey:" + new String(r.getRow()));

180	for (KeyValue keyValue : r.raw()) {

181	System.out.println("列：" + new String(keyValue.getFamily())

182	+ "====值:" + new String(keyValue.getValue()));

183

}

184

}

185	} catch (Exception e) {

186	e.printStackTrace();

187

}

188

189

}

190

191

192	public static void QueryByCondition3(String tableName) {

193

194

try {

195	HTablePool pool = new HTablePool(configuration, 1000);

196	HTable table = (HTable) pool.getTable(tableName);

197

198	List<Filter> filters = new ArrayList<Filter>();

199

200	Filter filter1 = new SingleColumnValueFilter(Bytes

201	.toBytes("column1"), null, CompareOp.EQUAL, Bytes

202	.toBytes("aaa"));

203	filters.add(filter1);

204

205	Filter filter2 = new SingleColumnValueFilter(Bytes

206	.toBytes("column2"), null, CompareOp.EQUAL, Bytes

207	.toBytes("bbb"));

208	filters.add(filter2);

209

210	Filter filter3 = new SingleColumnValueFilter(Bytes

211	.toBytes("column3"), null, CompareOp.EQUAL, Bytes

212	.toBytes("ccc"));

213	filters.add(filter3);

214

215	FilterList filterList1 = new FilterList(filters);

216

217	Scan scan = new Scan();

218	scan.setFilter(filterList1);

219	ResultScanner rs = table.getScanner(scan);

220	for (Result r : rs) {

221	System.out.println("获得到rowkey:" + new String(r.getRow()));

222	for (KeyValue keyValue : r.raw()) {

223	System.out.println("列：" + new String(keyValue.getFamily())

224	+ "====值:" + new String(keyValue.getValue()));

225

}

226

}

227	rs.close();

228

229	} catch (Exception e) {

230	e.printStackTrace();

231

}

232

233

}

234

235

}