hbase 得到一行的数据详情

 

• 列的详细信息

得到某一行所有数据

public static void getRow(String tableName, String rowKey) throws IOException{ 
HTable table = new HTable(conf, tableName);
Get get = new Get(Bytes.toBytes(rowKey));
//get.setMaxVersions();显示所有版本
//get.setTimeStamp();显示指定时间戳的版本Result result = table.get(get);
for(Cell cell : result.rawCells()){
    System.out.println("行键:" + Bytes.toString(result.getRow()));
    System.out.println("列族" + Bytes.toString(CellUtil.cloneFamily(cell)));
    System.out.println("列:" + Bytes.toString(CellUtil.cloneQualifier(cell)));
    System.out.println("值:" + Bytes.toString(CellUtil.cloneValue(cell)));
    System.out.println("时间戳:" + cell.getTimestamp());
   }
}

获取某一行指定“列族:列”的数据

public static void getRowQualifier(String tableName, String rowKey, String family, String qualifier) throws IOException{

HTable table = new HTable(conf, tableName);
Get get = new Get(Bytes.toBytes(rowKey));
get.addColumn(Bytes.toBytes(family), Bytes.toBytes(qualifier)); 
Result result = table.get(get);
for(Cell cell : result.rawCells()){
  System.out.println("行键:" + Bytes.toString(result.getRow()));
  System.out.println("列族" + Bytes.toString(CellUtil.cloneFamily(cell)));
  System.out.println("列:" + Bytes.toString(CellUtil.cloneQualifier(cell)));
  System.out.println("值:" + Bytes.toString(CellUtil.cloneValue(cell)));
  }
}