Win10 IDEA远程连接HBase
Win10 IDEA连接虚拟机中的Hadoop（HDFS）
关闭Hadoop和Hbase
如果已经关闭不需要走这一步
cd /usr/local/hbase
bin/stop-hbase.sh
cd /usr/local/hadoop
./sbin/stop-dfs.sh
获取虚拟机的ip
虚拟机终端输入
ip a
关闭虚拟机防火墙
sudo ufw disable
修改Hadoop的core-site.xml文件
将IP修改成自己的IP
# 位置可能不一样，和Hadoop安装位置有关
cd /usr/local/hadoop/etc/hadoop
vim core-site.xml
<configuration><property><name>hadoop.tmp.dir</name><value>file:/usr/local/hadoop/tmp</value><description>Abase for other temporary directories.</description></property><property><name>fs.defaultFS</name><value>hdfs://192.168.111.135:9000</value></property><property><name>hadoop.proxyuser.hadoop.hosts</name><value>*</value></property><property><name>hadoop.proxyuser.hadoop.groups</name><value>*</value></property>
</configuration>
修改Hbase的hbase-site.xml
将IP修改成自己的IP
# 位置可能不一样，和Hbase安装位置有关
cd /usr/local/hbase
vim /usr/local/hbase/conf/hbase-site.xml
<configuration><property><name>hbase.rootdir</name><value>hdfs://192.168.111.135:9000/hbase</value></property><property><name>hbase.cluster.distributed</name><value>true</value></property><property><name>hbase.unsafe.stream.capability.enforce</name><value>false</value></property><property><name>hbase.wal.provider</name><value>filesystem</value></property><property><name>hbase.zookeeper.quorum</name><value>192.168.111.135:2181</value></property><property><name>hbase.master.ipc.address</name><value>0.0.0.0</value></property><property><name>hbase.regionserver.ipc.address</name><value>0.0.0.0</value></property>
</configuration>
打开Hadoop和Hbase
cd /usr/local/hadoop
./sbin/start-dfs.sh
cd /usr/local/hbase
bin/start-hbase.sh
jps
IDEA 连接
创建Maven项目
IDEA自带Maven，如果需要自己安装Maven可以参考安装Maven
创建项目，选择Maven，模板选择第一个maven-archetype-archetype
添加依赖（pom.xml）
记得修改自己hbase的版本，我的是2.5.4
设置好后Reload一下
<dependencies><dependency><groupId>org.apache.hbase</groupId><artifactId>hbase-client</artifactId><version>2.5.4</version></dependency></dependencies>
创建Java文件并运行
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.*;
import java.io.IOException;public class Test01 {public static Configuration configuration;public static Connection connection;public static Admin admin;public static void init(){System.setProperty("HADOOP_USER_NAME","hadoop");configuration = HBaseConfiguration.create();// IP 需要修改configuration.set("hbase.zookeeper.quorum", "192.168.111.135");configuration.set("hbase.zookeeper.property.clientPort", "2181");// IP 需要修改configuration.set("hbase.rootdir","hdfs://192.168.111.135:9000/hbase");try{connection = ConnectionFactory.createConnection(configuration);admin = connection.getAdmin();}catch (IOException e){e.printStackTrace();}}/** 打印所有表名称* */public static void tableListPrint() throws IOException {TableName[] tableNames = admin.listTableNames();for(TableName tableName : tableNames){System.out.println(tableName.getNameAsString());}}public static void close(){try{if(admin != null){admin.close();}if(null != connection){connection.close();}}catch (IOException e){e.printStackTrace();}}public static void main(String[] args) throws IOException {init();tableListPrint();close();}
}
其他
HBase Shell命令
# 进入shell
bin/hbase shell
# 列出HBase中所有的表
list
# 创建一个新表，表名为StudentInfo，包含两个列族Personal和Grades。
create 'StudentInfo', 'Personal', 'Grades'
# 向StudentInfo表中插入一条记录，RowKey为2023001，Personal:Name列的值为张三，Grades:Math列的值为90。
put 'StudentInfo','2023001', 'Personal:Name','张三'
put 'StudentInfo','2023001', 'Grades:Math', 90
# 查询RowKey为2023001的所有信息。
get 'StudentInfo','2023001'
# 修改2023001的Grades:Math列的值为95。
put 'StudentInfo', '2023001', 'Grades:Math', '95'
# 删除2023001的Personal:Name列。
delete 'StudentInfo', '2023001', 'Personal:Name'
# 扫描StudentInfo表，查看所有记录。
scan 'StudentInfo'
Java API
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.Bytes;
import java.io.IOException;public class Work01 {public static Configuration configuration;public static Connection connection;public static Admin admin;public static void main(String[] args) throws IOException {init();// 删除表 第一次运行请注释
// deleteTable("EmployeeRecords");tableListPrint();createTable("EmployeeRecords",new String[]{"Info","Salary"});tableListPrint();insertData("EmployeeRecords","606","Info","Name","CY");insertData("EmployeeRecords","606","Info","Department","现代信息产业学院");insertData("EmployeeRecords","606","Info","Monthly","50000");getData("EmployeeRecords","606");updateData("EmployeeRecords","606","60000");getData("EmployeeRecords","606");deleteData("EmployeeRecords","606");close();}public static void init(){System.setProperty("HADOOP_USER_NAME","hadoop");configuration = HBaseConfiguration.create();configuration.set("hbase.zookeeper.quorum", "192.168.111.135");configuration.set("hbase.zookeeper.property.clientPort", "2181");configuration.set("hbase.rootdir","hdfs://localhost:9000/hbase");// 避免乱码问题configuration.set("hbase.client.encoding.fallback", "UTF-8");try{connection = ConnectionFactory.createConnection(configuration);admin = connection.getAdmin();}catch (IOException e){e.printStackTrace();}}/** 打印所有表名称* */public static void tableListPrint() throws IOException {TableName[] tableNames = admin.listTableNames();System.out.print("所有表:");for(TableName tableName : tableNames){System.out.print(tableName.getNameAsString() + "\t");}System.out.println();}public static void createTable(String myTableName,String[] colFamily) throws IOException {TableName tableName = TableName.valueOf(myTableName);if(admin.tableExists(tableName)){System.out.println("talbe is exists!");}else {TableDescriptorBuilder tableDescriptor = TableDescriptorBuilder.newBuilder(tableName);for(String str:colFamily){ColumnFamilyDescriptor family =ColumnFamilyDescriptorBuilder.newBuilder(Bytes.toBytes(str)).build();tableDescriptor.setColumnFamily(family);}admin.createTable(tableDescriptor.build());}}public static void deleteTable(String myTableName) throws IOException {TableName tableName = TableName.valueOf(myTableName);admin.disableTable(tableName);admin.deleteTable(tableName);}public static void insertData(String tableName,String rowKey,String colFamily,String col,String val) throws IOException {Table table = connection.getTable(TableName.valueOf(tableName));Put put = new Put(rowKey.getBytes());put.addColumn(colFamily.getBytes(),col.getBytes(), val.getBytes());table.put(put);table.close();}public static void updateData(String tableName,String rowKey,String val) throws IOException {Table table = connection.getTable(TableName.valueOf(tableName));Put put = new Put(rowKey.getBytes());put.addColumn("Info".getBytes(),"Monthly".getBytes(), val.getBytes());table.put(put);table.close();}public static void getData(String tableName,String rowKey)throws IOException{Table table = connection.getTable(TableName.valueOf(tableName));Get get = new Get(rowKey.getBytes());Result result = table.get(get);Cell[] cells = result.rawCells();System.out.print("行键:"+rowKey);for (Cell cell : cells) {//获取列名String colName = Bytes.toString(cell.getQualifierArray(),cell.getQualifierOffset(),cell.getQualifierLength());String value = Bytes.toString(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());System.out.print("\t"+colName+":"+value);}System.out.println();table.close();}public static void deleteData(String tableName,String rowKey)throws IOException{Table table = connection.getTable(TableName.valueOf(tableName));Delete delete = new Delete(rowKey.getBytes());table.delete(delete);System.out.println("删除成功");}public static void close(){try{if(admin != null){admin.close();}if(null != connection){connection.close();}}catch (IOException e){e.printStackTrace();}}
}