hbase增删改，
package com.cfnet.hadoop.hbase; import java.io.IOException; 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.Get; import org.apache.hadoop.hbase.client.HBaseAdmin; import org.apache.hadoop.hbase.client.HTable; 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.util.Bytes; /** * HBase使用例子 * @author 陶诗德 * */public class HbaseDemo { static Configuration hbaseConfiguration = HBaseConfiguration.create(); static{ hbaseConfiguration.addResource("hbase-site.xml"); } /** * 创建表 * @param tablename 表名 * @param columnFamily 列族 * @throws IOException * @throws ZooKeeperConnectionException * @throws MasterNotRunningException */public static void CreateTable(String tablename,String columnFamily) throws MasterNotRunningException, ZooKeeperConnectionException, IOException{ HBaseAdmin admin = new HBaseAdmin(hbaseConfiguration); if(admin.tableExists(tablename)){//如果表已经存在 System.out.println(tablename+"表已经存在!"); }else{ TableName tableName =TableName.valueOf(tablename); HTableDescriptor tableDesc = new HTableDescriptor(tableName); tableDesc.addFamily(new HColumnDescriptor(columnFamily)); admin.createTable(tableDesc); System.out.println(tablename+"表已经成功创建!"); } } /** * 向表中插入一条新数据 * @param tableName 表名 * @param row 行键key * @param columnFamily 列族 * @param column 列名 * @param data 要插入的数据 * @throws IOException */public static void PutData(String tableName,String row,String columnFamily,String column,String data) throws IOException{ HTable table = new HTable(hbaseConfiguration, tableName); Put put = new Put(Bytes.toBytes(row)); put.add(Bytes.toBytes(columnFamily), Bytes.toBytes(column), Bytes.toBytes(data)); table.put(put); System.out.println("put '"+row+"','"+columnFamily+":"+column+"','"+data+"'"); } /** * 获取指定行的所有数据 * @param tableName 表名 * @param row 行键key * @param columnFamily 列族 * @param column 列名 * @throws IOException */public static void GetData(String tableName,String row,String columnFamily,String column) throws IOException{ HTable table = new HTable(hbaseConfiguration, tableName); // Scan scan = new Scan();// ResultScanner result = table.getScanner(scan); Get get = new Get(Bytes.toBytes(row)); Result result = table.get(get); byte[] rb = result.getValue(Bytes.toBytes(columnFamily), Bytes.toBytes(column)); String value = new String(rb,"UTF-8"); System.out.println(value); } /** * 获取指定表的所有数据 * @param tableName 表名 * @throws IOException */public static void ScanAll(String tableName) throws IOException{ HTable table = new HTable(hbaseConfiguration, tableName); Scan scan = new Scan(); ResultScanner resultScanner = table.getScanner(scan); for (Result result : resultScanner) { List<Cell> cells= result.listCells(); for (Cell cell : cells) { byte[] rb = cell.getValueArray(); String row = new String(result.getRow(),"UTF-8"); String family = new String(CellUtil.cloneFamily(cell),"UTF-8"); String qualifier = new String(CellUtil.cloneQualifier(cell),"UTF-8"); String value = new String(CellUtil.cloneValue(cell),"UTF-8"); System.out.println("[row:"+row+"],[family:"+family+"],[qualifier:"+qualifier+"],[value:"+value+"]"); } } } /** * @param args */public static void main(String[] args) { try { //HbaseDemo.CreateTable("userinfo", "baseinfo");//HbaseDemo.PutData("userinfo", "row2", "baseinfo", "vio2", "驾驶车辆违法信息2：");//HbaseDemo.GetData("userinfo", "row2","baseinfo","vio2"); HbaseDemo.ScanAll("userinfo"); HbaseDemo.ScanAll("userinfo"); } catch (Exception e) { e.printStackTrace(); } } }