HBase的API操作（DML）

DML主要包括INSERT、UPDATE、DELETE三种指令，一般情况下，数据库的初始基本操作通常称为 CRUD (create, read, update, and delete), 指的是 增、查、改、删四种操作。HBase 中有与之对应的的一组操作，由Table interface 接口提供。
TestHTable.java 测试类

public class TestHTable {
	private static final String TABLE_NAME = "MY_HBASE_TABLE_TADMIN";
	private static final String CF_DEFAULT = "DEFAULT_COLUMN_FAMILY";

	/**
	 * 插入记录
	 */
	public static void putRecord() throws IOException {
		//Create the required configuration
        Configuration conf = HBaseConfiguration.create();
        
        //Instantiate a new client.
        Connection conn = ConnectionFactory.createConnection(conf);
        Table table = conn.getTable(TableName.valueOf(TABLE_NAME));
        
        //Create put with specific row.
        Put put = new Put(Bytes.toBytes("rowkey1"));
        
        //Add column, put <table>,<rowkey>,<family:column>,<value>
        put.addColumn(Bytes.toBytes(CF_DEFAULT), Bytes.toBytes("name"), Bytes.toBytes("hbase1"));
        put.addColumn(Bytes.toBytes(CF_DEFAULT), Bytes.toBytes("version"), Bytes.toBytes("2.0.3"));
        
        //Store row with column into the HBase table.
        table.put(put);
        
        //Close table and connection instances to free resources.
        table.close();
        conn.close();
	}
	
	/**
	 * 获取记录,语法：get <table>,<rowkey>,[<family:column>,....]
	 */
	public static void getRecord() throws IOException {
		//Create the required configuration
        Configuration conf = HBaseConfiguration.create();
        
        //Instantiate a new client.
        Connection conn = ConnectionFactory.createConnection(conf);
        Table table = conn.getTable(TableName.valueOf(TABLE_NAME));
        
        // Create get with specific row.
        Get get = new Get(Bytes.toBytes("rowkey1"));
        // Add a column to the get.
        //get.addColumn(Bytes.toBytes(CF_DEFAULT), Bytes.toBytes("name"));
        
        // Retrieve row with selected columns from HBase.
        Result result = table.get(get);
        System.out.println("Result: " + result);
        CellScanner scanner = result.cellScanner();
        while (scanner.advance()) {
            System.out.println("Get Cell: " + scanner.current());
        }
        
        // Get a specific value for the given column.
        byte[] val1 = result.getValue(Bytes.toBytes(CF_DEFAULT), Bytes.toBytes("name"));
        byte[] val2 = result.getValue(Bytes.toBytes(CF_DEFAULT), Bytes.toBytes("version"));
        System.out.println("name: " + Bytes.toString(val1));
        System.out.println("version: " + Bytes.toString(val2));
        
        //Close table and connection instances to free resources.
        table.close();
        conn.close();
	}
	
	public static void main(String[] args) throws IOException {
		//putRecord();
		getRecord();
	}
}

运行结果：插入数据

运行结果：查询数据