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Hbase部分常用的封装类
2019-02-12 13:37:24 】 浏览:34
Tags:Hbase 部分 常用 封装

package com.sxt.hbase;


import java.io.IOException;
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.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
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.HTable;
import org.apache.hadoop.hbase.client.HTableInterface;
import org.apache.hadoop.hbase.client.HTablePool;
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.filter.BinaryComparator;
import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
import org.apache.hadoop.hbase.filter.Filter;
import org.apache.hadoop.hbase.filter.FilterList;
import org.apache.hadoop.hbase.filter.PrefixFilter;
import org.apache.hadoop.hbase.filter.RowFilter;
import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;
import org.apache.hadoop.hbase.filter.SubstringComparator;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Test;




public class HBaseDAOImp {


HConnection hTablePool = null;
static Configuration conf =null;
public HBaseDAOImp()
{
conf = new Configuration();
String zk_list = "node1,node2,node3";
conf.set("hbase.zookeeper.quorum", zk_list);
try {
hTablePool = HConnectionManager.createConnection(conf) ;
} catch (IOException e) {
e.printStackTrace();
}
}
public void save(Put put, String tableName) {
// TODO Auto-generated method stub
HTableInterface table = null;
try {
table = hTablePool.getTable(tableName) ;
table.put(put) ;

} catch (Exception e) {
e.printStackTrace() ;
}finally{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}
}

/**
* 插入一个cell
* @param tableName
* @param rowKey
* @param family
* @param quailifer
* @param value
*/
public void insert(String tableName, String rowKey, String family,
String quailifer, String value) {
// TODO Auto-generated method stub
HTableInterface table = null;
try {
table = hTablePool.getTable(tableName) ;
Put put = new Put(rowKey.getBytes());
put.add(family.getBytes(), quailifer.getBytes(), value.getBytes()) ;
table.put(put);
} catch (Exception e) {
e.printStackTrace();
}finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}
}

/**
* 在一个列族下插入多个单元格
* @param tableName
* @param rowKey
* @param family
* @param quailifer
* @param value
*/
public void insert(String tableName,String rowKey,String family,String quailifer[],String value[])
{
HTableInterface table = null;
try {
table = hTablePool.getTable(tableName) ;
Put put = new Put(rowKey.getBytes());
// 批量添加
for (int i = 0; i < quailifer.length; i++) {
String col = quailifer[i];
String val = value[i];
put.add(family.getBytes(), col.getBytes(), val.getBytes());
}
table.put(put);
} catch (Exception e) {
e.printStackTrace();
}finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}
}
public void save(List<Put> Put, String tableName) {
// TODO Auto-generated method stub
HTableInterface table = null;
try {
table = hTablePool.getTable(tableName) ;
table.put(Put) ;
}
catch (Exception e) {
// TODO: handle exception
}finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}

}




public Result getOneRow(String tableName, String rowKey) {
// TODO Auto-generated method stub
HTableInterface table = null;
Result rsResult = null;
try {
table = hTablePool.getTable(tableName) ;
Get get = new Get(rowKey.getBytes()) ;
rsResult = table.get(get) ;
} catch (Exception e) {
e.printStackTrace() ;
}
finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}
return rsResult;
}

/**
* 最常用的方法,优化查询
* 查询一行数据,
* @param tableName
* @param rowKey
* @param cols
* @return
*/
public Result getOneRowAndMultiColumn(String tableName, String rowKey,String[] cols) {
// TODO Auto-generated method stub
HTableInterface table = null;
Result rsResult = null;
try {
table = hTablePool.getTable(tableName) ;
Get get = new Get(rowKey.getBytes()) ;
for (int i = 0; i < cols.length; i++) {
get.addColumn("cf".getBytes(), cols[i].getBytes()) ;
}
rsResult = table.get(get) ;
} catch (Exception e) {
e.printStackTrace() ;
}
finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}
return rsResult;
}



public List<Result> getRows(String tableName, String rowKeyLike) {
// TODO Auto-generated method stub
HTableInterface table = null;
List<Result> list = null;
try {
FilterList fl = new FilterList(FilterList.Operator.MUST_PASS_ALL);
table = hTablePool.getTable(tableName) ;
PrefixFilter filter = new PrefixFilter(rowKeyLike.getBytes());
SingleColumnValueFilter filter1 = new SingleColumnValueFilter(
"order".getBytes(),
"order_type".getBytes(),
CompareOp.EQUAL,
Bytes.toBytes("1")
);
fl.addFilter(filter);
fl.addFilter(filter1);
Scan scan = new Scan();
scan.setFilter(fl);
ResultScanner scanner = table.getScanner(scan) ;
list = new ArrayList<Result>() ;
for (Result rs : scanner) {
list.add(rs) ;
}
} catch (Exception e) {
e.printStackTrace() ;
}
finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}
return list;
}


public List<Result> getRows(String tableName, String rowKeyLike ,String cols[]) {
// TODO Auto-generated method stub
HTableInterface table = null;
List<Result> list = null;
try {
table = hTablePool.getTable(tableName) ;
PrefixFilter filter = new PrefixFilter(rowKeyLike.getBytes());

Scan scan = new Scan();
for (int i = 0; i < cols.length; i++) {
scan.addColumn("cf".getBytes(), cols[i].getBytes()) ;
}
scan.setFilter(filter);
ResultScanner scanner = table.getScanner(scan) ;
list = new ArrayList<Result>() ;
for (Result rs : scanner) {
list.add(rs) ;
}
} catch (Exception e) {
e.printStackTrace() ;
}
finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}
return list;
}

public List<Result> getRowsByOneKey(String tableName, String rowKeyLike ,String cols[]) {
// TODO Auto-generated method stub
HTableInterface table = null;
List<Result> list = null;
try {
table = hTablePool.getTable(tableName) ;
PrefixFilter filter = new PrefixFilter(rowKeyLike.getBytes());

Scan scan = new Scan();
for (int i = 0; i < cols.length; i++) {
scan.addColumn("cf".getBytes(), cols[i].getBytes()) ;
}
scan.setFilter(filter);
ResultScanner scanner = table.getScanner(scan) ;
list = new ArrayList<Result>() ;
for (Result rs : scanner) {
list.add(rs) ;
}
} catch (Exception e) {
e.printStackTrace() ;
}
finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}
return list;
}

/**
* 范围查询
* @param tableName
* @param startRow
* @param stopRow
* @return
*/
public List<Result> getRows(String tableName,String startRow,String stopRow)
{
HTableInterface table = null;
List<Result> list = null;
try {
table = hTablePool.getTable(tableName) ;
Scan scan = new Scan() ;
scan.setStartRow(startRow.getBytes()) ;
scan.setStopRow(stopRow.getBytes()) ;
ResultScanner scanner = table.getScanner(scan) ;
list = new ArrayList<Result>() ;
for (Result rsResult : scanner) {
list.add(rsResult) ;
}

}catch (Exception e) {
e.printStackTrace() ;
}
finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}
return list;
}


public void deleteRecords(String tableName, String rowKeyLike){
HTableInterface table = null;
try {
table = hTablePool.getTable(tableName) ;
PrefixFilter filter = new PrefixFilter(rowKeyLike.getBytes());
Scan scan = new Scan();
scan.setFilter(filter);
ResultScanner scanner = table.getScanner(scan) ;
List<Delete> list = new ArrayList<Delete>() ;
for (Result rs : scanner) {
Delete del = new Delete(rs.getRow());
list.add(del) ;
}
table.delete(list);
}
catch (Exception e) {
e.printStackTrace() ;
}
finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}

}

public void deleteCell(String tableName, String rowkey,String cf,String column){
HTableInterface table = null;
try {
table = hTablePool.getTable(tableName) ;
Delete del = new Delete(rowkey.getBytes());
del.deleteColumn(cf.getBytes(), column.getBytes());
table.delete(del);
}
catch (Exception e) {
e.printStackTrace() ;
}
finally
{
try {
table.close() ;
} catch (IOException e) {
e.printStackTrace();
}
}

}

public void createTable(String tableName, String[] columnFamilys){
try {
// admin 对象
HBaseAdmin admin = new HBaseAdmin(conf);
if (admin.tableExists(tableName)) {
System.err.println("此表,已存在!");
} else {
HTableDescriptor tableDesc = new HTableDescriptor(
TableName.valueOf(tableName));


for (String columnFamily : columnFamilys) {
tableDesc.addFamily(new HColumnDescriptor(columnFamily));
}


admin.createTable(tableDesc);
System.err.println("建表成功!");


}
admin.close();// 关闭释放资源
} catch (MasterNotRunningException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ZooKeeperConnectionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}


}


/**
* 删除一个表
*
* @param tableName
* 删除的表名
* */
public void deleteTable(String tableName) {
try {
HBaseAdmin admin = new HBaseAdmin(conf);
if (admin.tableExists(tableName)) {
admin.disableTable(tableName);// 禁用表
admin.deleteTable(tableName);// 删除表
System.err.println("删除表成功!");
} else {
System.err.println("删除的表不存在!");
}
admin.close();
} catch (MasterNotRunningException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ZooKeeperConnectionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

/**
* 查询表中所有行
* @param tablename
*/
public void scaner(String tablename) {
try {
HTable table =new HTable(conf, tablename);
Scan s =new Scan();
// s.addColumn(family, qualifier)
// s.addColumn(family, qualifier)
ResultScanner rs = table.getScanner(s);
for (Result r : rs) {

for(Cell cell:r.rawCells()){
System.out.println("RowName:"+new String(CellUtil.cloneRow(cell))+" ");
System.out.println("Timetamp:"+cell.getTimestamp()+" ");
System.out.println("column Family:"+new String(CellUtil.cloneFamily(cell))+" ");
System.out.println("row Name:"+new String(CellUtil.cloneQualifier(cell))+" ");
System.out.println("value:"+new String(CellUtil.cloneva lue(cell))+" ");
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
public void scanerByColumn(String tablename) {

try {
HTable table =new HTable(conf, tablename);
Scan s =new Scan();
s.addColumn("cf".getBytes(), "201504052237".getBytes());
s.addColumn("cf".getBytes(), "201504052237".getBytes());
ResultScanner rs = table.getScanner(s);
for (Result r : rs) {

for(Cell cell:r.rawCells()){
System.out.println("RowName:"+new String(CellUtil.cloneRow(cell))+" ");
System.out.println("Timetamp:"+cell.getTimestamp()+" ");
System.out.println("column Family:"+new String(CellUtil.cloneFamily(cell))+" ");
System.out.println("row Name:"+new String(CellUtil.cloneQualifier(cell))+" ");
System.out.println("value:"+new String(CellUtil.cloneva lue(cell))+" ");
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {





// 创建表
// String tableName="test";
// String cfs[] = {"cf"};
// dao.createTable(tableName,cfs);

// 存入一条数据
// Put put = new Put("bjsxt".getBytes());
// put.add("cf".getBytes(), "name".getBytes(), "cai10".getBytes()) ;
// dao.save(put, "test") ;


// 插入多列数据
// Put put = new Put("bjsxt".getBytes());
// List<Put> list = new ArrayList<Put>();
// put.add("cf".getBytes(), "addr".getBytes(), "shanghai1".getBytes()) ;
// put.add("cf".getBytes(), "age".getBytes(), "30".getBytes()) ;
// put.add("cf".getBytes(), "tel".getBytes(), "13889891818".getBytes()) ;
// list.add(put) ;
// dao.save(list, "test");

// 插入单行数据
// dao.insert("test", "testrow", "cf", "age", "35") ;
// dao.insert("test", "testrow", "cf", "cardid", "12312312335") ;
// dao.insert("test", "testrow", "cf", "tel", "13512312345") ;



// List<Result> list = dao.getRows("test", "testrow",new String[]{"age"}) ;
// for(Result rs : list)
// {
// for(Cell cell:rs.rawCells()){
// System.out.println("RowName:"+new String(CellUtil.cloneRow(cell))+" ");
// System.out.println("Timetamp:"+cell.getTimestamp()+" ");
// System.out.println("column Family:"+new String(CellUtil.cloneFamily(cell))+" ");
// System.out.println("row Name:"+new String(CellUtil.cloneQualifier(cell))+" ");
// System.out.println("value:"+new String(CellUtil.cloneva lue(cell))+" ");
// }
// }

// Result rs = dao.getOneRow("test", "testrow");
// System.out.println(new String(rs.getValue("cf".getBytes(), "age".getBytes())));

// Result rs = dao.getOneRowAndMultiColumn("cell_monitor_table", "29448-513332015-04-05", new String[]{"201504052236","201504052237"});
// for(Cell cell:rs.rawCells()){
// System.out.println("RowName:"+new String(CellUtil.cloneRow(cell))+" ");
// System.out.println("Timetamp:"+cell.getTimestamp()+" ");
// System.out.println("column Family:"+new String(CellUtil.cloneFamily(cell))+" ");
// System.out.println("row Name:"+new String(CellUtil.cloneQualifier(cell))+" ");
// System.out.println("value:"+new String(CellUtil.cloneva lue(cell))+" ");
// }

// dao.deleteTable("cell_monitor_table");
// 创建表
String tableName="cell_monitor_table";
String cfs[] = {"cf"};
// dao.createTable(tableName,cfs);
}


public static void testRowFilter(String tableName){
try {
HTable table =new HTable(conf, tableName);
Scan scan = new Scan();
scan.addColumn(Bytes.toBytes("column1"),Bytes.toBytes("qqqq"));
Filter filter1 = new RowFilter(CompareOp.LESS_OR_EQUAL,new BinaryComparator(Bytes.toBytes("laoxia157")));
scan.setFilter(filter1);
ResultScanner scanner1 = table.getScanner(scan);
for (Result res : scanner1) {
System.out.println(res);
}
scanner1.close();


//
// Filter filter2 = new RowFilter(CompareFilter.CompareOp.EQUAL,new RegexStringComparator("laoxia4\\d{2}"));
// scan.setFilter(filter2);
// ResultScanner scanner2 = table.getScanner(scan);
// for (Result res : scanner2) {
// System.out.println(res);
// }
// scanner2.close();


Filter filter3 = new RowFilter( CompareOp.EQUAL,new SubstringComparator("laoxia407"));
scan.setFilter(filter3);
ResultScanner scanner3 = table.getScanner(scan);
for (Result res : scanner3) {
System.out.println(res);
}
scanner3.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

@Test
public void testTrasaction(){
try{
HTableInterface table = null;
table = hTablePool.getTable("t_test".getBytes());
// Put put1 =new Put("002".getBytes());
// put1.add("cf1".getBytes(), "name".getBytes(), "王五".getBytes());
// table.put(put1);
Put newput =new Put("001".getBytes());
newput.add("cf1".getBytes(), "like".getBytes(), "看书".getBytes());

boolean f= table.checkAndPut("001".getBytes(), "cf1".getBytes(), "age".getBytes(), "24".getBytes(), newput);
System.out.println(f);

}catch (Exception e){
e.printStackTrace();
}

}
}


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