Java操作Hbase进行建表、删表以及对数据进行增删改查代码,Java代码库,德仔网

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【Java】 Java操作Hbase进行建表、删表以及对数据进行增删改查
作者:Duncan / 发布于2014/11/18/ 580
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

	import java.io.IOException;
	import java.util.ArrayList;
	import java.util.List;

	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.MasterNotRunningException;
	import org.apache.hadoop.hbase.ZooKeeperConnectionException;
	import org.apache.hadoop.hbase.client.Delete;
	import org.apache.hadoop.hbase.client.Get;
	import org.apache.hadoop.hbase.client.HBaseAdmin;
	import org.apache.hadoop.hbase.client.HTable;
	import org.apache.hadoop.hbase.client.HTablePool;
	import org.apache.hadoop.hbase.client.Put;
	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.filter.Filter;
	import org.apache.hadoop.hbase.filter.FilterList;
	import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;
	import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
	import org.apache.hadoop.hbase.util.Bytes;

	public class JinTaoTest {

	 public static Configuration configuration;
	 static {
	 configuration = HBaseConfiguration.create();
	 configuration.set("hbase.zookeeper.property.clientPort", "2181");
	 configuration.set("hbase.zookeeper.quorum", "192.168.1.100");
	 configuration.set("hbase.master", "192.168.1.100:600000");
	 }

	 public static void main(String[] args) {
	 // createTable("wujintao");
	 // insertData("wujintao");
	 // QueryAll("wujintao");
	 // QueryByCondition1("wujintao");
	 // QueryByCondition2("wujintao");
	 //QueryByCondition3("wujintao");
	 //deleteRow("wujintao","abcdef");
	 deleteByCondition("wujintao","abcdef");
	 }

	 public static void createTable(String tableName) {
	 System.out.println("start create table ......");
	 try {
	 HBaseAdmin hBaseAdmin = new HBaseAdmin(configuration);
	 if (hBaseAdmin.tableExists(tableName)) {// 如果存在要创建的表，那么先删除，再创建
	 hBaseAdmin.disableTable(tableName);
	 hBaseAdmin.deleteTable(tableName);
	 System.out.println(tableName + " is exist,detele....");
	 }
	 HTableDescriptor tableDescriptor = new HTableDescriptor(tableName);
	 tableDescriptor.addFamily(new HColumnDescriptor("column1"));
	 tableDescriptor.addFamily(new HColumnDescriptor("column2"));
	 tableDescriptor.addFamily(new HColumnDescriptor("column3"));
	 hBaseAdmin.createTable(tableDescriptor);
	 } catch (MasterNotRunningException e) {
	 e.printStackTrace();
	 } catch (ZooKeeperConnectionException e) {
	 e.printStackTrace();
	 } catch (IOException e) {
	 e.printStackTrace();
	 }
	 System.out.println("end create table ......");
	 }

	 public static void insertData(String tableName) {
	 System.out.println("start insert data ......");
	 HTablePool pool = new HTablePool(configuration, 1000);
	 HTable table = (HTable) pool.getTable(tableName);
	 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
	 put.add("column1".getBytes(), null, "aaa".getBytes());// 本行数据的第一列
	 put.add("column2".getBytes(), null, "bbb".getBytes());// 本行数据的第三列
	 put.add("column3".getBytes(), null, "ccc".getBytes());// 本行数据的第三列
	 try {
	 table.put(put);
	 } catch (IOException e) {
	 e.printStackTrace();
	 }
	 System.out.println("end insert data ......");
	 }

	 public static void dropTable(String tableName) {
	 try {
	 HBaseAdmin admin = new HBaseAdmin(configuration);
	 admin.disableTable(tableName);
	 admin.deleteTable(tableName);
	 } catch (MasterNotRunningException e) {
	 e.printStackTrace();
	 } catch (ZooKeeperConnectionException e) {
	 e.printStackTrace();
	 } catch (IOException e) {
	 e.printStackTrace();
	 }

	 }

	 public static void deleteRow(String tablename, String rowkey) {
	 try {
	 HTable table = new HTable(configuration, tablename);
	 List list = new ArrayList();
	 Delete d1 = new Delete(rowkey.getBytes());
	 list.add(d1);

	 table.delete(list);
	 System.out.println("删除行成功!");

	 } catch (IOException e) {
	 e.printStackTrace();
	 }

	 }

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

	 }

	 public static void QueryAll(String tableName) {
	 HTablePool pool = new HTablePool(configuration, 1000);
	 HTable table = (HTable) pool.getTable(tableName);
	 try {
	 ResultScanner rs = table.getScanner(new Scan());
	 for (Result r : rs) {
	 System.out.println("获得到rowkey:" + new String(r.getRow()));
	 for (KeyValue keyValue : r.raw()) {
	 System.out.println("列：" + new String(keyValue.getFamily())
	 + "====值:" + new String(keyValue.getValue()));
	 }
	 }
	 } catch (IOException e) {
	 e.printStackTrace();
	 }
	 }

	 public static void QueryByCondition1(String tableName) {

	 HTablePool pool = new HTablePool(configuration, 1000);
	 HTable table = (HTable) pool.getTable(tableName);
	 try {
	 Get scan = new Get("abcdef".getBytes());// 根据rowkey查询
	 Result r = table.get(scan);
	 System.out.println("获得到rowkey:" + new String(r.getRow()));
	 for (KeyValue keyValue : r.raw()) {
	 System.out.println("列：" + new String(keyValue.getFamily())
	 + "====值:" + new String(keyValue.getValue()));
	 }
	 } catch (IOException e) {
	 e.printStackTrace();
	 }
	 }

	 public static void QueryByCondition2(String tableName) {

	 try {
	 HTablePool pool = new HTablePool(configuration, 1000);
	 HTable table = (HTable) pool.getTable(tableName);
	 Filter filter = new SingleColumnValueFilter(Bytes
	 .toBytes("column1"), null, CompareOp.EQUAL, Bytes
	 .toBytes("aaa")); // 当列column1的值为aaa时进行查询
	 Scan s = new Scan();
	 s.setFilter(filter);
	 ResultScanner rs = table.getScanner(s);
	 for (Result r : rs) {
	 System.out.println("获得到rowkey:" + new String(r.getRow()));
	 for (KeyValue keyValue : r.raw()) {
	 System.out.println("列：" + new String(keyValue.getFamily())
	 + "====值:" + new String(keyValue.getValue()));
	 }
	 }
	 } catch (Exception e) {
	 e.printStackTrace();
	 }

	 }

	 public static void QueryByCondition3(String tableName) {

	 try {
	 HTablePool pool = new HTablePool(configuration, 1000);
	 HTable table = (HTable) pool.getTable(tableName);

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

	 Filter filter1 = new SingleColumnValueFilter(Bytes
	 .toBytes("column1"), null, CompareOp.EQUAL, Bytes
	 .toBytes("aaa"));
	 filters.add(filter1);

	 Filter filter2 = new SingleColumnValueFilter(Bytes
	 .toBytes("column2"), null, CompareOp.EQUAL, Bytes
	 .toBytes("bbb"));
	 filters.add(filter2);

	 Filter filter3 = new SingleColumnValueFilter(Bytes
	 .toBytes("column3"), null, CompareOp.EQUAL, Bytes
	 .toBytes("ccc"));
	 filters.add(filter3);

	 FilterList filterList1 = new FilterList(filters);

	 Scan scan = new Scan();
	 scan.setFilter(filterList1);
	 ResultScanner rs = table.getScanner(scan);
	 for (Result r : rs) {
	 System.out.println("获得到rowkey:" + new String(r.getRow()));
	 for (KeyValue keyValue : r.raw()) {
	 System.out.println("列：" + new String(keyValue.getFamily())
	 + "====值:" + new String(keyValue.getValue()));
	 }
	 }
	 rs.close();

	 } catch (Exception e) {
	 e.printStackTrace();
	 }

	 }

	}
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