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hbase测试 java代码

2014-11-24 17:48 260 查看
需要的包地址如下:http://download.csdn.net/detail/u010310183/8193509

然后看一下代码 注视已经标注 自己去测试即可

package test;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
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.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.HTable;
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.Filter;
import org.apache.hadoop.hbase.filter.FilterList;
import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;
import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
import org.apache.hadoop.hbase.util.Bytes;

public class JinTaoTest {

public static Configuration configuration;
static {
configuration = HBaseConfiguration.create();
configuration.set("hbase.master", "192.168.237.149:60000");
configuration.set("hbase.zookeeper.property.clientPort", "2181");
//configuration.set("hbase.zookeeper.quorum", "192.168.237.149");

}

public static void main(String[] args) throws IOException {
//createTable("wujintao");  //创建表
//insertData("wujintao");  //增加数据
//QueryAll("wujintao");  //查询遍历数据
//QueryByCondition1("wujintao");  //条件查询
//QueryByCondition2("wujintao");
//QueryByCondition3("wujintao");
//deleteRow("wujintao","112233bbbcccc"); //删除id为   112233bbbcccc  的数据
// deleteByCondition("wujintao","abcdef");
}

/**
* 创建一张表
* @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"));
hBaseAdmin.createTable(tableDescriptor);
} catch (MasterNotRunningException e) {
e.printStackTrace();
} catch (ZooKeeperConnectionException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("end create table ......");
}

/**
* 增加一条数据
* @param tableName
* @throws IOException
* 一个id 对应多个属性  ,   112233bbbcccc是id , column1是属性名字 , aaa是属性 value  , 和mysql一个意思
*/
public static void insertData(String tableName) throws IOException {
System.out.println("start insert data ......");
HTable table = new HTable(configuration, tableName);
Put put = new Put("112233bbbcccc".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
try {
table.put(put);
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("end insert data ......");
}

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();
}

}

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();
}

}

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

}

/**
* 遍历查询
* @param tableName
* @throws IOException
*/
public static void QueryAll(String tableName) throws IOException {
//        HTablePool pool = new HTablePool(configuration, 1000);
//        HTable table = (HTable) pool.getTable(tableName);
HTable table = new HTable(configuration, 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())
+ "====值:" + new String(keyValue.getValue()));
}
}
} catch (IOException e) {
e.printStackTrace();
}
}

/**
* 条件查询  根据"112233bbbcccc" 进行条件查询
* @param tableName
* @throws IOException
*/
public static void QueryByCondition1(String tableName) throws IOException {

//        HTablePool pool = new HTablePool(configuration, 1000);
//        HTable table = (HTable) pool.getTable(tableName);
HTable table = new HTable(configuration, tableName);
try {
Get scan = new Get("112233bbbcccc".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())
+ "====值:" + new String(keyValue.getValue()));
}
} catch (IOException e) {
e.printStackTrace();
}
}

public static void QueryByCondition2(String tableName) {

try {
//            HTablePool pool = new HTablePool(configuration, 1000);
//            HTable table = (HTable) pool.getTable(tableName);
HTable table = new HTable(configuration, tableName);
Filter filter = new SingleColumnValueFilter(Bytes
.toBytes("column1"), null, CompareOp.EQUAL, Bytes
.toBytes("aaa")); // 当列column1的值为aaa时进行查询
Scan s = new Scan();
s.setFilter(filter);
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())
+ "====值:" + new String(keyValue.getValue()));
}
}
} catch (Exception e) {
e.printStackTrace();
}

}

public static void QueryByCondition3(String tableName) {

try {
HTablePool pool = new HTablePool(configuration, 1000);
HTable table = (HTable) 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())
+ "====值:" + new String(keyValue.getValue()));
}
}
rs.close();

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

}

}
最后需要配置一个启动文件 run.sh 我上面的文章已经介绍过这个启动文件 格式如下

#!/bin/sh
LIBS_DIR=/usr/hadooptest/lib  //这里是项目包的路径
for i in $LIBS_DIR/*.jar
do CLASSPATH=$i:"$CLASSPATH"
done

SERVER=/usr/hadooptest  //这里是项目路径  bin的上一级

cd $SERVER/bin

java -Xms512m -Xmx1024m  -classpath $CLASSPATH test.JinTaoTest //这里是项目类的路径
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