hbase 增删改查 api 简单操作

package com.utils;





import java.io.IOException;

import java.util.ArrayList;

import java.util.List;





import org.apache.hadoop.conf.Configuration;

import org.apache.hadoop.hbase.HColumnDescriptor;

import org.apache.hadoop.hbase.HTableDescriptor;

import org.apache.hadoop.hbase.KeyValue;

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.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.CompareFilter.CompareOp;

import org.apache.hadoop.hbase.filter.PrefixFilter;

import org.apache.hadoop.hbase.filter.RegexStringComparator;

import org.apache.hadoop.hbase.filter.RowFilter;





public class HBaseTest {

HBaseAdmin admin=null;

Configuration conf=null;

/**

* 构造函数载入配置

*/

public HBaseTest(){

conf = new Configuration();

conf.set("hbase.zookeeper.quorum","192.168.80.20,192.168.80.21,192.168.80.22");

conf.set("hbase.rootdir", "hdfs://cluster/hbase");

conf.set("hbase.master", "192.168.80.20:60010");

try {

admin = new HBaseAdmin(conf);

} catch (IOException e) {

e.printStackTrace();

}

}

public static void main(String[] args) throws Exception {

HBaseTest hbase = new HBaseTest();

//创建一张表

hbase.createTable("stu","cf");

// //查询全部表名

// hbase.getALLTable();

// //往表中加入一条记录

// hbase.addOneRecord("stu","key1","cf","name","zhangsan");

// hbase.addOneRecord("stu","key1","cf","age","24");

// //查询一条记录

// hbase.getKey("stu","key1");

// //获取表的全部数据

// hbase.getALLData("stu");

// //删除一条记录

// hbase.deleteOneRecord("stu","key1");

// //删除表

// hbase.deleteTable("stu");

//scan过滤器的使用

hbase.getScanData("stu","cf","age");

//rowFilter的使用

//84138413_20130313145955

hbase.getRowFilter("waln_log","^*_201303131400\\d*$");

}





public void getRowFilter(String tableName, String reg) throws Exception {

HTable hTable = new HTable(conf, tableName);

Scan scan = new Scan();

RowFilter rowFilter = new RowFilter(CompareOp.NOT_EQUAL, new RegexStringComparator(reg));

scan.setFilter(rowFilter);

ResultScanner scanner = hTable.getScanner(scan);

for (Result result : scanner) {

System.out.println(new String(result.getRow()));

}

}

public void getScanData(String tableName, String family, String qualifier) throws Exception {

HTable hTable = new HTable(conf, tableName);

Scan scan = new Scan();

scan.addColumn(family.getBytes(), qualifier.getBytes());

ResultScanner scanner = hTable.getScanner(scan);

for (Result result : scanner) {

if(result.raw().length==0){

System.out.println(tableName+" 表数据为空！

");

}else{

for (KeyValue kv: result.raw()){

System.out.println(new String(kv.getKey())+"\t"+new String(kv.getValue()));

}

}

}

}

private void deleteTable(String tableName) {

try {

if (admin.tableExists(tableName)) {

admin.disableTable(tableName);

admin.deleteTable(tableName);

System.out.println(tableName+"表删除成功。");

}

} catch (IOException e) {

e.printStackTrace();

System.out.println(tableName+"表删除失败！

");

}



}

/**

* 删除一条记录

* @param tableName

* @param rowKey

*/

public void deleteOneRecord(String tableName, String rowKey) {

HTablePool hTablePool = new HTablePool(conf, 1000);

HTableInterface table = hTablePool.getTable(tableName);

Delete delete = new Delete(rowKey.getBytes());

try {

table.delete(delete);

System.out.println(rowKey+"记录删除成功！");

} catch (IOException e) {

e.printStackTrace();

System.out.println(rowKey+"记录删除失败！");

}

}

/**

* 获取表的全部数据

* @param tableName

*/

public void getALLData(String tableName) {

try {

HTable hTable = new HTable(conf, tableName);

Scan scan = new Scan();

ResultScanner scanner = hTable.getScanner(scan);

for (Result result : scanner) {

if(result.raw().length==0){

System.out.println(tableName+" 表数据为空！");

}else{

for (KeyValue kv: result.raw()){

System.out.println(new String(kv.getKey())+"\t"+new String(kv.getValue()));

}

}

}

} catch (IOException e) {

e.printStackTrace();

}



}

/**

* 查询一条记录

* @param tableName

* @param rowKey

*/

public void getKey(String tableName, String rowKey) {

HTablePool hTablePool = new HTablePool(conf, 1000);

HTableInterface table = hTablePool.getTable(tableName);

Get get = new Get(rowKey.getBytes());

try {

Result result = table.get(get);

if (result.raw().length==0) {

System.out.println("查询的关键词"+rowKey+"不存在");

}else {

for (KeyValue kv : result.raw()) {

System.out.println(new String(kv.getKey())+"\t"+new String(kv.getValue()));

}

}

} catch (IOException e) {

e.printStackTrace();

}

}



/**

* 往表中加入一条记录

* @param tableName

* @param rowKey

* @param column

* @param qua

* @param value

*/

public void addOneRecord(String tableName, String rowKey, String column,

String qua, String value) {

HTablePool hTablePool = new HTablePool(conf, 1000);

HTableInterface table = hTablePool.getTable(tableName);

Put put = new Put(rowKey.getBytes());

put.add(column.getBytes(), qua.getBytes(), value.getBytes());

try {

table.put(put);

System.out.println("加入记录 "+rowKey+ " 成功！

");

} catch (IOException e) {

e.printStackTrace();

System.out.println("加入记录 "+rowKey+ " 失败。");

}

}

/**

* 查询全部表名

* @return

* @throws Exception

*/

public List<String> getALLTable() throws Exception {

ArrayList<String> tables = new ArrayList<String>();

if(admin!=null){

HTableDescriptor[] listTables = admin.listTables();

if (listTables.length>0) {

for (HTableDescriptor tableDesc : listTables) {

tables.add(tableDesc.getNameAsString());

System.out.println(tableDesc.getNameAsString());

}

}

}

return tables;

}

/**

* 创建一张表

* @param tableName

* @param column

* @throws Exception

*/

public void createTable(String tableName, String column) throws Exception {

if(admin.tableExists(tableName)){

System.out.println(tableName+"表已经存在。");

}else{

HTableDescriptor tableDesc = new HTableDescriptor(tableName);

tableDesc.addFamily(new HColumnDescriptor(column.getBytes()));

admin.createTable(tableDesc);

System.out.println(tableName+"表创建成功！");

}

}

}