hbase java Api练习
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package cn.itcast_01_hbase; import java.util.ArrayList; import java.util.List; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.Cell; import org.apache.hadoop.hbase.CellUtil; import org.apache.hadoop.hbase.HBaseConfiguration; import org.apache.hadoop.hbase.HColumnDescriptor; import org.apache.hadoop.hbase.HTableDescriptor; import org.apache.hadoop.hbase.MasterNotRunningException; import org.apache.hadoop.hbase.TableName; import org.apache.hadoop.hbase.ZooKeeperConnectionException; import org.apache.hadoop.hbase.client.Connection; import org.apache.hadoop.hbase.client.ConnectionFactory; 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.HConnection; import org.apache.hadoop.hbase.client.HConnectionManager; 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.client.Table; import org.apache.hadoop.hbase.filter.ColumnPrefixFilter; import org.apache.hadoop.hbase.filter.CompareFilter; import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp; import org.apache.hadoop.hbase.filter.FilterList; import org.apache.hadoop.hbase.filter.FilterList.Operator; import org.apache.hadoop.hbase.filter.MultipleColumnPrefixFilter; import org.apache.hadoop.hbase.filter.RegexStringComparator; import org.apache.hadoop.hbase.filter.RowFilter; import org.apache.hadoop.hbase.filter.SingleColumnValueFilter; import org.apache.hadoop.hbase.util.Bytes; import org.junit.After; import org.junit.Before; import org.junit.Test; public class HbaseTest_2 { /** * 配置ss */ static Configuration config = null; private Connection connection = null; private Table table = null; @Before public void init() throws Exception { config = HBaseConfiguration.create();// 配置 //这里没有配置好像用的是path里面的hbase，这个程序是在linunx中 //运行的，所以 没有问题，下面的配置是集群中的，但是由于集群没有搭建起来 //用的是单机的 //config.set("hbase.zookeeper.quorum", "master,work1,work2");// zookeeper地址 //config.set("hbase.zookeeper.property.clientPort", "2181");// zookeeper端口 /*connection = ConnectionFactory.createConnection(config); table = connection.getTable(TableName.valueOf("www.baidu.com20170630"));*/ connection = ConnectionFactory.createConnection(config); table = connection.getTable(TableName.valueOf("t4")); } /** * 创建一个表 * * @throws Exception */ @Test public void createTable() throws Exception { //创建表管理 HBaseAdmin admin = new HBaseAdmin(config); TableName tableName = TableName.valueOf("t4"); HTableDescriptor desc = new HTableDescriptor(tableName); HColumnDescriptor family = new HColumnDescriptor("info");// desc.addFamily(family); HColumnDescriptor family2 = new HColumnDescriptor("ino2"); desc.addFamily(family2); admin.createTable(desc); } @Test @SuppressWarnings("deprecation") public void deleteTable() throws MasterNotRunningException, ZooKeeperConnectionException, Exception { HBaseAdmin admin = new HBaseAdmin(config); admin.disableTable("t3"); admin.deleteTable("t3"); admin.close(); } /** * 向hbase中增加数据 * * @throws Exception */ @SuppressWarnings({ "deprecation", "resource" }) @Test public void insertData() throws Exception { List<Put> arraylist = new ArrayList<Put>(1); Put put = new Put(Bytes.toBytes("1223434"));//rowkey put.add(Bytes.toBytes("info"),Bytes.toBytes("name"),Bytes.toBytes("huangxiaoming")); put.add(Bytes.toBytes("info"),Bytes.toBytes("password"),Bytes.toBytes("anglebaby")); put.add(Bytes.toBytes("info"),Bytes.toBytes("age"),Bytes.toBytes("25")); put.add(Bytes.toBytes("info"),Bytes.toBytes("gender"),Bytes.toBytes("1")); arraylist.add(put); //提交 table.put(arraylist); //插入数据 table.flushCommits(); } /** * 修改数据，不存在时新增 * * @throws Exception */ @Test public void uodateData() throws Exception { Put put = new Put(Bytes.toBytes("323422")); put.add(Bytes.toBytes("info"), Bytes.toBytes("name_B"), Bytes.toBytes("郭德纲")); put.add(Bytes.toBytes("info"), Bytes.toBytes("password_A"), Bytes.toBytes(1234)); Put put1 = new Put(Bytes.toBytes("323432")); put1.add(Bytes.toBytes("info"), Bytes.toBytes("name_B"), Bytes.toBytes("沙河上")); put1.add(Bytes.toBytes("info"), Bytes.toBytes("password_B"), Bytes.toBytes(1234)); Put put2 = new Put(Bytes.toBytes("323442")); put2.add(Bytes.toBytes("info"), Bytes.toBytes("name_B"), Bytes.toBytes("猪八戒")); put2.add(Bytes.toBytes("info"), Bytes.toBytes("password_B"), Bytes.toBytes(1234)); //插入数据 table.put(put); table.put(put1); table.put(put2); //提交 table.flushCommits(); } /** * 删除数据 * * @throws Exception */ @Test public void deleteDate() throws Exception { Delete delete = new Delete(Bytes.toBytes("1234")); table.delete(delete); table.flushCommits(); } /** * 单条查询 * * @throws Exception */ @Test public void queryData() throws Exception { Get get =new Get(Bytes.toBytes("1234")); //get.addColumn(Bytes.toBytes("info"), Bytes.toBytes("password"));//根据列族查询列名字查询 get.addFamily(Bytes.toBytes("info"));//根据列族查询 Result result = table.get(get); long start = System.currentTimeMillis(); System.out.println(Bytes.toInt(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("password")))); System.out.println(Bytes.toString(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("name")))); long end = System.currentTimeMillis(); System.out.println(end-start); } /** * 全表扫描 * * @throws Exception */ @Test public void scanData() throws Exception { Scan scan = new Scan(); scan.setStartRow(Bytes.toBytes("1")); scan.setStopRow(Bytes.toBytes("z"));// //scan.addFamily(Bytes.toBytes("info")); scan.addColumn(Bytes.toBytes("info"), Bytes.toBytes("name")); ResultScanner scanner = table.getScanner(scan); for(Result result : scanner){ System.out.print(Bytes.toString(result.getRow())+";");//rowkey System.out.print(Bytes.toString(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("name")))+";"); System.out.print(Bytes.toInt(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("password")))+";"); System.out.println(); } } private void printScanner(ResultScanner scanner ){ for(Result result : scanner){ System.out.print(Bytes.toString(result.getRow())+";");//rowkey System.out.print(Bytes.toString(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("name")))+";"); System.out.print(Bytes.toInt(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("password")))+";"); System.out.println(); } } /** * 全表扫描的过滤器 * 列值过滤器 * * @throws Exception */ @Test public void scanDataByFilter1() throws Exception { Scan scan = new Scan(); SingleColumnValueFilter filter = new SingleColumnValueFilter(Bytes.toBytes("info"), Bytes.toBytes("name"), CompareOp.GREATER, Bytes.toBytes("lisi1234")); scan.setFilter(filter); ResultScanner scanner = table.getScanner(scan); printScanner(scanner); } /** * rowkey过滤器 * @throws Exception */ @Test public void scanDataByFilter2() throws Exception { Scan scan = new Scan(); RowFilter rowFilter = new RowFilter(CompareOp.EQUAL, new RegexStringComparator("^2")); scan.setFilter(rowFilter); ResultScanner scanner = table.getScanner(scan); printScanner(scanner); } /** * 匹配列名前缀 * @throws Exception */ @Test public void scanDataByFilter3() throws Exception { Scan scan = new Scan(); ColumnPrefixFilter columnPrefixFilter = new ColumnPrefixFilter(Bytes.toBytes("n")); //scan.addFamily(Bytes.toBytes("info")); scan.setFilter(columnPrefixFilter); ResultScanner scanner = table.getScanner(scan); printScanner(scanner); } @Test public void scanDataByFilter44() throws Exception { //MultipleColumnPrefixFilter 和 ColumnPrefixFilter 行为差不多，但可以指定多个前缀 Scan scan = new Scan(); byte[][] prefixes = new byte[][] {Bytes.toBytes("na"),Bytes.toBytes("p")}; //Filter f = new MultipleColumnPrefixFilter(prefixes); MultipleColumnPrefixFilter filter = new MultipleColumnPrefixFilter(prefixes); scan.setFilter(filter); ResultScanner scanner = table.getScanner(scan); printScanner(scanner); } /** * 过滤器集合 * @throws Exception */ @Test public void scanDataByFilter4() throws Exception { // 创建全表扫描的scan Scan scan = new Scan(); FilterList filters = new FilterList(Operator.MUST_PASS_ALL); RowFilter rowFilter = new RowFilter(CompareOp.EQUAL, new RegexStringComparator("^2")); SingleColumnValueFilter singleColumnValueFilter = new SingleColumnValueFilter(Bytes.toBytes("info"), Bytes.toBytes("name"), CompareOp.NOT_EQUAL, Bytes.toBytes("lisi")); filters.addFilter(rowFilter); filters.addFilter(singleColumnValueFilter); scan.setFilter(filters); ResultScanner scanner = table.getScanner(scan); printScanner(scanner); } @After public void close() throws Exception { table.close(); connection.close(); } }
数据库表
scan ‘t4‘ ROW COLUMN+CELL 1223434 column=info:age, timestamp=1498891615751, value=25 1223434 column=info:gender, timestamp=1498891615751, value=1 1223434 column=info:name, timestamp=1498892027083, value=lisi1234 1223434 column=info:password, timestamp=1498892027083, value=\x00\x12\xD5. 1234 column=info:name, timestamp=1498892427671, value=lisi1234 1234 column=info:password, timestamp=1498892427671, value=\x00\x12\xD5. 12341 column=info:name, timestamp=1498894169373, value=sudan 12341 column=info:password, timestamp=1498894169373, value=\x00\x00\x00\x17 12342 column=info:name, timestamp=1498894341082, value=hanmei 12342 column=info:password, timestamp=1498894341082, value=\x00\x00\x04\xD2 123422 column=info:name, timestamp=1498894389540, value=\xE9\x83\xAD\xE5\xBE\xB7\xE7\xBA\xB2 123422 column=info:password, timestamp=1498894389540, value=\x00\x00\x04\xD2 12343 column=info:name, timestamp=1498894341091, value=sunwukong 12343 column=info:password, timestamp=1498894341091, value=\x00\x00\x04\xD2 123432 column=info:name, timestamp=1498894389549, value=\xE6\xB2\x99\xE6\xB2\xB3\xE4\xB8\x8A 123432 column=info:password, timestamp=1498894389549, value=\x00\x00\x04\xD2 12344 column=info:name, timestamp=1498894341093, value=\xE7\x8C\xAA\xE5\x85\xAB\xE6\x88\x92 12344 column=info:password, timestamp=1498894341093, value=\x00\x00\x04\xD2 123442 column=info:name, timestamp=1498894389551, value=\xE7\x8C\xAA\xE5\x85\xAB\xE6\x88\x92 123442 column=info:password, timestamp=1498894389551, value=\x00\x00\x04\xD2 223422 column=info:name, timestamp=1498894677209, value=\xE9\x83\xAD\xE5\xBE\xB7\xE7\xBA\xB2 223422 column=info:password, timestamp=1498894677209, value=\x00\x00\x04\xD2 223432 column=info:name, timestamp=1498894677222, value=\xE6\xB2\x99\xE6\xB2\xB3\xE4\xB8\x8A 223432 column=info:password, timestamp=1498894677222, value=\x00\x00\x04\xD2 223442 column=info:name, timestamp=1498894677225, value=\xE7\x8C\xAA\xE5\x85\xAB\xE6\x88\x92 223442 column=info:password, timestamp=1498894677225, value=\x00\x00\x04\xD2 323422 column=info:name, timestamp=1498894726797, value=\xE9\x83\xAD\xE5\xBE\xB7\xE7\xBA\xB2 323422 column=info:name_A, timestamp=1498896667538, value=\xE9\x83\xAD\xE5\xBE\xB7\xE7\xBA\xB2 323422 column=info:name_B, timestamp=1498896689859, value=\xE9\x83\xAD\xE5\xBE\xB7\xE7\xBA\xB2 323422 column=info:password, timestamp=1498894726797, value=\x00\x00\x04\xD2 323422 column=info:password_A, timestamp=1498896689859, value=\x00\x00\x04\xD2 323432 column=info:name, timestamp=1498894726809, value=\xE6\xB2\x99\xE6\xB2\xB3\xE4\xB8\x8A 323432 column=info:name_A, timestamp=1498896667547, value=\xE6\xB2\x99\xE6\xB2\xB3\xE4\xB8\x8A 323432 column=info:name_B, timestamp=1498896689870, value=\xE6\xB2\x99\xE6\xB2\xB3\xE4\xB8\x8A 323432 column=info:password, timestamp=1498894726809, value=\x00\x00\x04\xD2 323432 column=info:password_A, timestamp=1498896667547, value=\x00\x00\x04\xD2 323432 column=info:password_B, timestamp=1498896689870, value=\x00\x00\x04\xD2 323442 column=info:name, timestamp=1498894726811, value=\xE7\x8C\xAA\xE5\x85\xAB\xE6\x88\x92 323442 column=info:name_A, timestamp=1498896667549, value=\xE7\x8C\xAA\xE5\x85\xAB\xE6\x88\x92 323442 column=info:name_B, timestamp=1498896689872, value=\xE7\x8C\xAA\xE5\x85\xAB\xE6\x88\x92 323442 column=info:password, timestamp=1498894726811, value=\x00\x00\x04\xD2 323442 column=info:password_A, timestamp=1498896667549, value=\x00\x00\x04\xD2 323442 column=info:password_B, timestamp=1498896689872, value=\x00\x00\x04\xD2 15 row(s) in 0.0790 seconds hbase(main):017:0>
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