/**
* Created by han on 2016/1/28.
*/
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.*;
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.SingleColumnValueFilter;
import org.apache.hadoop.hbase.util.Bytes;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class test {
public static Configuration configuration;
static {
configuration = HBaseConfiguration.create();
configuration.set("hbase.zookeeper.property.clientPort", "2181");
configuration.set("hbase.zookeeper.quorum", "48.0.191.154:2181,48.0.191.154:2182,48.0.191.154:2183");
configuration.set("hbase.master", "48.0.191.154:60000");
System.setProperty("java.library.path","E:\\资料\\hadoop-2.6.2\\bin");
System.setProperty("hadoop.home.dir", "E:\\资料\\hadoop-2.6.2");
System.setProperty("PATH", "E:\\资料\\hadoop-2.6.2\\bin");
}
public static void main(String[] args) {
// createTable("h");
// insertData("h");
// QueryAll("h");
// QueryByCondition1("h");
QueryByCondition2("h");
// QueryByCondition3("h");
// deleteRow("h","abcdef");
// deleteByCondition("h","abcdef");
// dropTable("h");
}
/**
* 创建表
* @param tableName
*/
public static void createTable(String tableName) {
System.out.println("start create table ......");
try {
HBaseAdmin hBaseAdmin = new HBaseAdmin(configuration);
if (hBaseAdmin.tableExists(tableName)) {// 如果存在要创建的表，那么先删除，再创建
hBaseAdmin.disableTable(tableName);
hBaseAdmin.deleteTable(tableName);
System.out.println(tableName + " is exist,detele....");
}
HTableDescriptor tableDescriptor = new HTableDescriptor(tableName);
tableDescriptor.addFamily(new HColumnDescriptor("column1"));
tableDescriptor.addFamily(new HColumnDescriptor("column2"));
tableDescriptor.addFamily(new HColumnDescriptor("column3"));
tableDescriptor.addFamily(new HColumnDescriptor("cf"));
hBaseAdmin.createTable(tableDescriptor);
} catch (MasterNotRunningException e) {
e.printStackTrace();
} catch (ZooKeeperConnectionException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("end create table ......");
}
/**
* 插入数据
* @param tableName
*/
public static void insertData(String tableName) {
System.out.println("start insert data ......");
HTablePool pool = new HTablePool(configuration, 1000);
HTableInterface table = pool.getTable(tableName);
Put put = new Put("abcdef".getBytes());// 一个PUT代表一行数据，再NEW一个PUT表示第二行数据,每行一个唯一的ROWKEY，此处rowkey为put构造方法中传入的值
put.add("column1".getBytes(), null, "aaa".getBytes());// 本行数据的第一列
put.add("column2".getBytes(), null, "bbb".getBytes());// 本行数据的第三列
put.add("column3".getBytes(), null, "ccc".getBytes());// 本行数据的第三列
Put put1 = new Put("han_r1".getBytes());
put1.addColumn("cf".getBytes(),"a".getBytes(),"han_cf_a".getBytes());
try {
table.put(put);
table.put(put1);
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("end insert data ......");
}
/**
* 删除一张表
* @param tableName
*/
public static void dropTable(String tableName) {
try {
HBaseAdmin admin = new HBaseAdmin(configuration);
admin.disableTable(tableName);
admin.deleteTable(tableName);
} catch (MasterNotRunningException e) {
e.printStackTrace();
} catch (ZooKeeperConnectionException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 根据 rowkey删除一条记录
* @param tablename
* @param rowkey
*/
public static void deleteRow(String tablename, String rowkey) {
try {
HTable table = new HTable(configuration, tablename);
List list = new ArrayList();
Delete d1 = new Delete(rowkey.getBytes());
list.add(d1);
table.delete(list);
System.out.println("删除行成功!");
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 组合条件删除
* @param tablename
* @param rowkey
*/
public static void deleteByCondition(String tablename, String rowkey) {
//目前还没有发现有效的API能够实现 根据非rowkey的条件删除 这个功能能，还有清空表全部数据的API操作
}
/**
* 查询所有数据
* @param tableName
*/
public static void QueryAll(String tableName) {
HTablePool pool = new HTablePool(configuration, 1000);
HTableInterface table = pool.getTable(tableName);
try {
ResultScanner rs = table.getScanner(new Scan());
for (Result r : rs) {
System.out.println("获得到rowkey:" + new String(r.getRow()));
for (KeyValue keyValue : r.raw()) {
System.out.println("列：" + new String(keyValue.getFamily())
+
" ：" + new String(keyValue.getQualifier())
+ "====值:" + new String(keyValue.getValue())
+ "===TIME===" + String.valueOf(keyValue.getTimestamp() )
);
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 单条件查询,根据rowkey查询唯一一条记录
* @param tableName
*/
public static void QueryByCondition1(String tableName) {
System.out.println(" QueryByCondition1");
HTablePool pool = new HTablePool(configuration, 1000);
HTableInterface table = pool.getTable(tableName);
try {
Get scan = new Get("abcdef".getBytes());// 根据rowkey查询
Result r = table.get(scan);
System.out.println("获得到rowkey:" + new String(r.getRow()));
for (KeyValue keyValue : r.raw()) {
System.out.println("列：" + new String(keyValue.getFamily())
+
" ：" + new String(keyValue.getQualifier())
+ "====值:" + new String(keyValue.getValue())
+ "===TIME===" + String.valueOf(keyValue.getTimestamp() )
);
}
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 单条件按查询，查询多条记录
* @param tableName
*/
public static void QueryByCondition2(String tableName) {
System.out.println(" QueryByCondition2");
try {
HTablePool pool = new HTablePool(configuration, 1000);
HTableInterface table = pool.getTable(tableName);
FilterList filterList=new FilterList();
SingleColumnValueFilter filter = new SingleColumnValueFilter(Bytes
.toBytes("column1"), null, CompareOp.EQUAL, Bytes
.toBytes("aaa") ); // 当列column1的值为aaa时进行查询
filter.setFilterIfMissing(true);
filterList.addFilter(filter);
Scan s = new Scan();
s.setFilter(filterList);
ResultScanner rs = table.getScanner(s);
for (Result r : rs) {
System.out.println("获得到rowkey:" + new String(r.getRow()));
for (KeyValue keyValue : r.raw()) {
System.out.println("列：" + new String(keyValue.getFamily())
+
" ：" + new String(keyValue.getQualifier())
+ "====值:" + new String(keyValue.getValue())
+ "===TIME===" + String.valueOf(keyValue.getTimestamp())
);
}
}
rs.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 组合条件查询
* @param tableName
*/
public static void QueryByCondition3(String tableName) {
System.out.println(" QueryByCondition3");
try {
HTablePool pool = new HTablePool(configuration, 1000);
HTableInterface table = pool.getTable(tableName);
List<Filter> filters = new ArrayList<Filter>();
Filter filter1 = new SingleColumnValueFilter(Bytes
.toBytes("column1"), null, CompareOp.EQUAL, Bytes
.toBytes("aaa"));
filters.add(filter1);
Filter filter2 = new SingleColumnValueFilter(Bytes
.toBytes("column2"), null, CompareOp.EQUAL, Bytes
.toBytes("bbb"));
filters.add(filter2);
Filter filter3 = new SingleColumnValueFilter(Bytes
.toBytes("column3"), null, CompareOp.EQUAL, Bytes
.toBytes("ccc"));
filters.add(filter3);
FilterList filterList1 = new FilterList(filters);
Scan scan = new Scan();
scan.setFilter(filterList1);
ResultScanner rs = table.getScanner(scan);
for (Result r : rs) {
System.out.println("获得到rowkey:" + new String(r.getRow()));
for (KeyValue keyValue : r.raw()) {
System.out.println("列：" + new String(keyValue.getFamily())
+
" ：" + new String(keyValue.getQualifier())
+ "====值:" + new String(keyValue.getValue())
+ "===TIME===" + String.valueOf(keyValue.getTimestamp())
);
}
}
rs.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
