直接貼代碼啦
/**
*
* @param zkIp
* @param zkPort
* @param tablename
* @param startRow 傳null掃全表
* @param stopRow 已~結尾
* @throws Exception
*/
public static void scanTable(String zkIp,String zkPort,String tablename,String startRow,String stopRow) throws Exception {
HTablePool pool;
Configuration config = HBaseConfiguration.create();
config.set("hbase.zookeeper.quorum",zkIp);//
config.set("hbase.zookeeper.property.clientPort", zkPort);
pool = new HTablePool(config, 2);
HTableInterface hbTable = null;
try {
hbTable = pool.getTable(tablename); // 表名
ResultScanner rs = null;
Scan scan = new Scan();
// scan.addColumn(Bytes.toBytes("cf1"),Bytes.toBytes("qual1"));掃某一列
if (startRow != null) { // 設置掃描的范圍
scan.setStartRow(Bytes.toBytes(startRow));
}
if (stopRow != null) {
scan.setStopRow(Bytes.toBytes(stopRow));
}
rs = hbTable.getScanner(scan);
hbTable.close();
for (Result r : rs) {// 按行去遍歷
for (KeyValue kv : r.raw()) {// 遍歷每一行的各列
StringBuffer sb = new StringBuffer()
.append(Bytes.toString(kv.getRow())).append("\t")
.append(Bytes.toString(kv.getFamily()))
.append("\t")
.append(Bytes.toString(kv.getQualifier()))
.append("\t").append(Bytes.toString(kv.getValue()));
System.out.println(sb.toString());
// kv.getRow() key
// kv.getFamily() cf1
// kv.getQualifier() 列名
// kv.getValue() value
}
}
} catch (Exception e) {
System.out.println(e.getMessage());
}finally{
pool.close();
}
}