b0120 Hbase 数据库使用

说明

版本  hbase 2.3.6 

安装在hadoop 上

安装

单机版

b0104 大数据集群-2021伪分布式-环境搭建 

 

分布式

b0105 大数据集群-2021分布式A(手动3节点)-环境搭建

b0106 大数据集群-2021分布式B(服务器)-环境搭建 

使用

命令行

参考

HBase Shell常用命令和基本操作（附带实例）  （归档为知笔记 )

查看自带帮助

linux 

: hbase 

hbase> help

 

python

安装依赖包

pip install happybase
pip install thrift

服务器启动hbase thrift 服务

hbase-daemon.sh start thrift

jps
16363 ThriftServer

netstat -anp|grep 9090
tcp6       0      0 :::9090                 :::*                    LISTEN      16363/java

D:\1_common\python\code\projects\Bigdata2022

测试连接

# -*- coding: utf-8 -*-

import happybase
#链接，端口默认是9090 hbase thrift 启动的默认端口也是9090
connection = happybase.Connection('hc2108',port=9090)

# connection.tables()：获取Hbase实例中的表名列表，返回一个list
table_name_list = connection.tables()
print(table_name_list)

connection.close()
View Code

ddl

# -*- coding: utf-8 -*-
"""

"""
import happybase
conn = happybase.Connection("hc2108", 9090)


# 创建表---> zhy为表名，info 为列族名
conn.create_table('zhy', {"info":{}, "info2":{}})

# 删除表--> disable默认为False，删除表的手要修改为True
# conn.delete_table("zhy", True)


conn.close()
View Code

dml

# -*- coding: utf-8 -*-

import happybase

connection = happybase.Connection('hc2108',port=9090)


# 获取一个表对象
table = connection.table('zhy')
print(table)  # <happybase.table.Table name=b'zhy'>

# table.put(rowkey, {"info:content": value})
table.put("1004",{'info:name':"111111"})

table.put("1005",{'info:name':"5555555"})
table.put("1005",{'info:age':"65"})

table.put("1103",{'info:name':"103"})

# 删除
# table.delete("1103")


connection.close()
View Code

query

# -*- coding: utf-8 -*-

import happybase

#链接，端口默认是9090 hbase thrift 启动的默认端口也是9090
connection = happybase.Connection('hc2108',port=9090)

# connection.tables()：获取Hbase实例中的表名列表，返回一个list
table_name_list = connection.tables()
print(table_name_list)

# 获取一个表对象
table = connection.table('zhy')

# 根据一个完整的rowkey 查询
row = table.row("1005")
print(row)  # out  {b'info:age': b'65', b'info:name': b'5555555'}

row = table.rows(["1004","1005"])
print(row)  # out  [(b'1004', {b'info:name': b'111111'}), (b'1005', {b'info:age': b'65', b'info:name': b'5555555'})]

# ----------------- scan
# for key, value in table.scan():
#     # print(key,value)
#     # 读取中文乱码 解决
#     data = str(value).encode().decode('unicode-escape').encode('raw_unicode_escape').decode()
#     print(key, str(data))

"""
b'1004' {b'info:name': b'111111'}
b'1005' {b'info:age': b'65', b'info:name': b'5555555'}
"""

# ----------------- scan 指定row_start和row_stop参数来设置开始和结束扫描的row key
# for key, value in table.scan(row_start=b'100',row_stop=b'101', columns=['info:name','info:age']):
#     print(key,value)

"""
b'1004' {b'info:name': b'111111'}
b'1005' {b'info:age': b'65', b'info:name': b'5555555'}
"""

# ----------------- scan 查询rowkey 以什么开头
# for key, value in table.scan(row_prefix=b'100'):
#     print(key,value)


connection.close()
View Code

参考

python操作Hbase ，王轩12, 2021-04-03 11:28:56

 

java

本地工程位置

D:\1_common\java\code\projects\idea\BigData2022\DB

package priv.szb.db.java.hbase;

maven 添加以下依赖  pom.xml

    <dependencies>

        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-auth</artifactId>
            <version>3.3.1</version>
        </dependency>
        
        <dependency>
            <groupId>org.apache.hbase</groupId>
            <artifactId>hbase-client</artifactId>
            <version>2.3.6</version>
        </dependency>

        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-client</artifactId>
            <version>3.3.1</version>
        </dependency>

        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-common</artifactId>
            <version>3.3.1</version>
        </dependency>

    </dependencies>
View Code

 

连接测试

package priv.szb.db.java.hbase;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CellUtil;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.Bytes;

import java.io.IOException;

public class TestConnect {

    public static void main(String[] args) {
        String tableName = "zhy";

        try {
            Configuration conf = HBaseConfiguration.create();
            conf.set("hbase.zookeeper.property.clientPort","2181"); // zookeepe端口
            conf.set("hbase.zookeeper.quorum","192.168.1.10"); //  zookeepe服务器


            Connection connection = ConnectionFactory.createConnection(conf);
            HBaseAdmin admin = (HBaseAdmin) connection.getAdmin();


            System.out.println(admin.tableExists( TableName.valueOf(tableName) ));
            // out  true

            // 关闭连接
            if(admin != null){
                try {
                    admin.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

            if(connection!=null){
                try {
                    connection.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }


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

}
View Code

例1

package priv.szb.db.java.hbase;

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;

/**
 *  2022-07-17
 *  hbase 测试，跑通.基于以下修改
 *
 *  Hbase Java客户端访问集群
 *  https://www.codenong.com/js54bfae1c199a/
 */
public class HBaseTest {


    public static Configuration configuration;
    public static Connection connection;
    public static Admin admin;

    public static void main(String[] args) throws IOException {
        getClusterStatus();
//        listTables();
//        createTable("t2",new String[]{"cf1","cf2"});
//        listTables();
//        insterRow("t2", "rw1", "cf1", "q1", "val1");
//        getData("t2", "rw1", "cf1", "q1");
//        scanData("t2", "rw1", "rw2");
//        deleRow("t2","rw1","cf1","q1");
//        deleteTable("t2");
    }

    //初始化链接
    public static void init(){
        configuration = HBaseConfiguration.create();
//        configuration.set("hbase.zookeeper.quorum","116.196.64.103"); //ip配置一个也可以，但是host需要都配
        configuration.set("hbase.zookeeper.quorum","192.168.1.10");
        configuration.set("hbase.zookeeper.property.clientPort","2181");
        configuration.set("zookeeper.znode.parent","/hbase");

        try {
            connection = ConnectionFactory.createConnection(configuration);
            admin = connection.getAdmin();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    //关闭连接
    public static  void close(){
        try {
            if(null != admin)
                admin.close();
            if(null != connection)
                connection.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    //建表
    public static void createTable(String tableNmae,String[] cols) throws IOException {

        init();
        TableName tableName = TableName.valueOf(tableNmae);

        if(admin.tableExists(tableName)){
            System.out.println("####talbe is exists!####");
        }else {
            HTableDescriptor hTableDescriptor = new HTableDescriptor(tableName);
            for(String col:cols){
                HColumnDescriptor hColumnDescriptor = new HColumnDescriptor(col);
                hTableDescriptor.addFamily(hColumnDescriptor);
            }
            admin.createTable(hTableDescriptor);
        }
        close();
    }

    //删表
    public static void deleteTable(String tableName) throws IOException {
        init();
        TableName tn = TableName.valueOf(tableName);
        if (admin.tableExists(tn)) {
            admin.disableTable(tn);
            admin.deleteTable(tn);
        }
        close();
    }

    //查看已有表
    public static void listTables() throws IOException {
        init();
        System.out.println("查看已有表：");
        HTableDescriptor hTableDescriptors[] = admin.listTables();
        for(HTableDescriptor hTableDescriptor :hTableDescriptors){
            System.out.println(hTableDescriptor.getNameAsString());
        }
        close();
    }

    //插入数据
    public static void insterRow(String tableName,String rowkey,String colFamily,String col,String val) throws IOException {
        init();
        Table table = connection.getTable(TableName.valueOf(tableName));
        Put put = new Put(Bytes.toBytes(rowkey));
        put.addColumn(Bytes.toBytes(colFamily), Bytes.toBytes(col), Bytes.toBytes(val));
        table.put(put);

        //批量插入
       /* List<Put> putList = new ArrayList<Put>();
        puts.add(put);
        table.put(putList);*/
        table.close();
        close();
    }

    //删除数据
    public static void deleRow(String tableName,String rowkey,String colFamily,String col) throws IOException {
        init();
        Table table = connection.getTable(TableName.valueOf(tableName));
        Delete delete = new Delete(Bytes.toBytes(rowkey));
        //删除指定列族
        //delete.addFamily(Bytes.toBytes(colFamily));
        //删除指定列
        //delete.addColumn(Bytes.toBytes(colFamily),Bytes.toBytes(col));
        table.delete(delete);
        //批量删除
       /* List<Delete> deleteList = new ArrayList<Delete>();
        deleteList.add(delete);
        table.delete(deleteList);*/
        table.close();
        close();
    }

    //根据rowkey查找数据
    public static void getData(String tableName,String rowkey,String colFamily,String col)throws  IOException{
        init();
        Table table = connection.getTable(TableName.valueOf(tableName));
        Get get = new Get(Bytes.toBytes(rowkey));
        //获取指定列族数据
        //get.addFamily(Bytes.toBytes(colFamily));
        //获取指定列数据
        //get.addColumn(Bytes.toBytes(colFamily),Bytes.toBytes(col));
        Result result = table.get(get);

        showCell(result);
        table.close();
        close();
    }

    //格式化输出
    public static void showCell(Result result){
        Cell[] cells = result.rawCells();
        for(Cell cell:cells){
            System.out.println("row key:"+new String(CellUtil.cloneRow(cell))+" ");
            System.out.println("Timetamp:"+cell.getTimestamp()+" ");
            System.out.println("column Family:"+new String(CellUtil.cloneFamily(cell))+" ");
            System.out.println("column Name:"+new String(CellUtil.cloneQualifier(cell))+" ");
            System.out.println("value:"+new String(CellUtil.cloneValue(cell))+" ");
        }
    }

    //获取集群状态
    public static void getClusterStatus() {
        init();
        ClusterStatus status = null;
        try {
            status = admin.getClusterStatus();
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("getClusterStatus集群状态: " + status);
        close();
    }

    //批量查找数据
    public static void scanData(String tableName,String startRow,String stopRow)throws IOException{
        init();
        Table table = connection.getTable(TableName.valueOf(tableName));
        Scan scan = new Scan();
        //scan.setStartRow(Bytes.toBytes(startRow));
        //scan.setStopRow(Bytes.toBytes(stopRow));
        ResultScanner resultScanner = table.getScanner(scan);
        for(Result result : resultScanner){
            showCell(result);
        }
        table.close();
        close();
    }
}
View Code

例2

package priv.szb.db.java.hbase;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
 
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.*;
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;

/**
 *   2022-07-17
 *   hbase 测试，跑通.基于以下修改
 *
 *   java maven调用hbase
 *   https://blog.csdn.net/whq12789/article/details/88234592
 */
public class HBaseService {
    public static Configuration configuration;
    public static Connection connection;
    static {

//        System.setProperty("hadoop.home.dir", "D:\\Program\\hadoop-common-2.6.0-bin-master");
        configuration = HBaseConfiguration.create();
        configuration.set("hbase.zookeeper.property.clientPort", "2181");
        configuration.set("hbase.zookeeper.quorum", "192.168.1.10");
        configuration.set("hbase.client.keyvalue.maxsize","500000");
        try {
            connection=ConnectionFactory.createConnection(configuration);
        } catch (IOException e) {
            e.printStackTrace();
        }
        //configuration.set("hbase.master", "192.168.1.100:600000");
    }
 
    public static void main(String[] args) {
//         createTable("tbtest");
//         insertData("tbtest");
//         QueryAll("tbtest");
//         QueryByCondition1("tbtest");
//         QueryByCondition2("tbtest");
//        QueryByCondition3("tbtest");
//        deleteRow("tbtest","rowkey123");
//        dropTable("tbtest");
    }

    public static void showCell(Result result) {
        Cell[] cells = result.rawCells();
        for (Cell cell : cells) {
            System.out.println("row key:" + new String(CellUtil.cloneRow(cell)) + " ");
            System.out.println("Timetamp:" + cell.getTimestamp() + " ");
            System.out.println("column Family:" + new String(CellUtil.cloneFamily(cell)) + " ");
            System.out.println("column Name:" + new String(CellUtil.cloneQualifier(cell)) + " ");
            System.out.println("value:" + new String(CellUtil.cloneValue(cell)) + " ");
        }
    }

    public static void createTable(String tableName) {
        System.out.println("start create table ......");
        try {
            Admin hBaseAdmin = connection.getAdmin();
            if (hBaseAdmin.tableExists(TableName.valueOf(tableName))) {// 如果存在要创建的表，那么先删除，再创建
                hBaseAdmin.disableTable(TableName.valueOf(tableName));
                hBaseAdmin.deleteTable(TableName.valueOf(tableName));
                System.out.println(tableName + " is exist,delete....");
            }
            HTableDescriptor tableDescriptor = new HTableDescriptor(TableName.valueOf(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 ......");
    }
 
 
    public static void insertData(String tableName) {
        System.out.println("start insert data ......");
        try {
            HTable table = (HTable) connection.getTable(TableName.valueOf(tableName));
            Put put = new Put("rowkey123".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.addColumn("column1".getBytes(), null, "aaa".getBytes());// 本行数据的第一列
            put.addColumn("column2".getBytes(), null, "bbb".getBytes());// 本行数据的第三列
            put.addColumn("column3".getBytes(), null, "ccc".getBytes());// 本行数据的第三列
            table.put(put);
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("end insert data ......");
    }
 
 
    public static void dropTable(String tableName) {
        try {
            Admin admin = connection.getAdmin();;
            admin.disableTable(TableName.valueOf(tableName));
            admin.deleteTable(TableName.valueOf(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 {
            Table table = connection.getTable(TableName.valueOf(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 QueryAll(String tableName) {
        try {
            Table table = connection.getTable(TableName.valueOf(tableName));
            ResultScanner rs = table.getScanner(new Scan());
            for (Result r : rs) {
                System.out.println("获得到rowkey:" + new String(r.getRow()));
                showCell(r);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
 
 
    public static void QueryByCondition1(String tableName) {
 
        try {
            Table table = connection.getTable(TableName.valueOf(tableName));
            Get scan = new Get("rowkey123".getBytes());// 根据rowkey查询
            Result r = table.get(scan);
            System.out.println("获得到rowkey:" + new String(r.getRow()));

            showCell(r);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
 
 
    public static void QueryByCondition2(String tableName) {
 
        try {
 
            Table table = connection.getTable(TableName.valueOf(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()));

                showCell(r);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
 
    }
 
 
    public static void QueryByCondition3(String tableName) {
 
        try {
            Table table = connection.getTable(TableName.valueOf(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()));

                showCell(r);

            }
            rs.close();
 
        } catch (Exception e) {
            e.printStackTrace();
        }
 
    }
}
View Code

 








            

            
posted @ 
2022-07-17 14:12 
sunzebo 
阅读(34) 
评论(0) 
编辑 
收藏 
举报