IDEA远程连接HBase及其Java API实战

偏执的太偏执、 2022-11-19 01:09 166阅读 0赞

### 文章目录 ###

*  开放端口
 *  域名配置
 *  Hbase安装
 *  IDEA源码

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70_pic_center]

# 开放端口 #

--------------------

安全组没开放端口是原罪！！！导致好多BUG费时费力。Hbase悄悄咪咪的用了好多端口，比如被我抓到的42239，直接搜索报错药不对症。  
![在这里插入图片描述][20210415111249661.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70]

# 域名配置 #

--------------------

1.  服务器 vi /etc/hosts  
    私网ip master  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70 1]
2.  本地 C:\\Windows\\System32\\drivers\\etc\\hosts  
    公网ip master  
    ![在这里插入图片描述][20210415110201342.png]

![在这里插入图片描述][2021041423441051.png]

# Hbase安装 #

--------------------

1.  下载压缩包  
    可以去官网下载[http://hbase.apache.org/downloads.html][http_hbase.apache.org_downloads.html]  
    也可以去镜像下载历史版本[http://archive.apache.org/dist/hbase/][http_archive.apache.org_dist_hbase]  
    以1.3.2版本为例：  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70 2]  
    直接下载或者下载到本地再上传都行，看你哪个快。

wget http://archive.apache.org/dist/hbase/1.3.2/hbase-1.3.2-bin.tar.gz
    tar -zxvf hbase-1.3.2-bin.tar.gz #解压
    mv hbase-1.3.2 /usr/local/hbase

![在这里插入图片描述][20210415000439725.png]

1.  配置hbase-site.xml

cd /usr/local/hbase/conf
    vi hbase-site.xml

<property>
            <name>hbase.cluster.distributed</name>
            <value>true</value>
        </property>
        <property>
            <name>hbase.rootdir</name>
            <value>/hbase-data</value>
        </property>
        <property>
            <name>hbase.zookeeper.quorum</name>
            <value>master:2181</value>
        </property>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70 3]

1.  配置hbase-env.sh

cd /usr/local/hbase/conf
    echo $JAVA_HOME #若没有安装jdk可百度（偷懒）
    vi hbase-env.sh #添加和你输出的JAVA_HOME一致
    export JAVA_HOME=/usr/local/java

![在这里插入图片描述][20210415104307177.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70 4]

1.  运行测试

cd /usr/local/hbase/bin
    ./start-hbase.sh

![在这里插入图片描述][20210415000808574.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70 5]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70 6]  
ip:16010访问  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70 7]

# IDEA源码 #

--------------------

目录结构：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70 8]

1.  创建一个maven项目并在pom.xml添加依赖：

<dependency>
                <groupId>org.apache.hbase</groupId>
                <artifactId>hbase-server</artifactId>
                <version>1.3.2</version>
            </dependency>
            <dependency>
                <groupId>org.apache.hbase</groupId>
                <artifactId>hbase-client</artifactId>
                <version>1.3.2</version>
            </dependency>

版本是1.3.2，注意和你自己的一致，可以登录hbase shell时查看。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70 9]

> （插播反爬信息 ）博主CSDN地址：[https://wzlodq.blog.csdn.net/][https_wzlodq.blog.csdn.net]

1.  log4j.properties配置

log4j.rootLogger=debug, stdout, R
    
    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
    
    log4j.appender.stdout.layout.ConversionPattern=%5p - %m%n
    
    log4j.appender.R=org.apache.log4j.RollingFileAppender
    log4j.appender.R.File=firestorm.log
    
    log4j.appender.R.MaxFileSize=100KB
    log4j.appender.R.MaxBackupIndex=1
    
    log4j.appender.R.layout=org.apache.log4j.PatternLayout
    log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
    
    log4j.logger.com.codefutures=DEBUG

1.  HBaseCRUD.java

package ex3;
    
    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 HbaseCRUD { 
        private static Configuration configuration;
        private static Connection connection;
        private static Admin admin;
    
        public HbaseCRUD() { 
            init();
        }
    
        /** * 建立连接 */
        public void init(){ 
            configuration=HBaseConfiguration.create();
            configuration.set("hbase.zookeeper.quorum","121.36.240.205"); // 换成你自己的IP
            configuration.set("hbase.zookeeper.property.clientPort","2181");
            try{ 
                connection=ConnectionFactory.createConnection(configuration);
                admin=connection.getAdmin();
            }catch (IOException e){ 
                e.printStackTrace();
            }
        }
        /** * 关闭连接 */
        public void close(){ 
            try{ 
                if(admin!=null)
                    admin.close();
            }catch (IOException e){ 
                e.printStackTrace();
            }
        }
        /** * 创建表 * @param myTableName 表名 * @param colFamily 列族数组 * @throws IOException */
        public void createTable(String myTableName,String[]colFamily)throws IOException{ 
            TableName tablename = TableName.valueOf(myTableName);
            if(admin.tableExists(tablename)){ 
                System.out.println("表已存在，删除旧表");
                admin.disableTable(tablename);//使表无效
                admin.deleteTable(tablename);//删表
            }
            HTableDescriptor hTableDescriptor = new HTableDescriptor(tablename);
            for(String str:colFamily){   //增加一列
                HColumnDescriptor hColumnDescriptor = new HColumnDescriptor(str);
                hTableDescriptor.addFamily(hColumnDescriptor);
            }
            admin.createTable(hTableDescriptor); //建表
            System.out.println("建表成功");
        }
    
        /** * 插入数据 * @param tableName 表名 * @param rowKey 行键 * @param fields 列族(或列族:列限定符) * @param values 值 * @throws IOException */
        public void addRecord(String tableName,String rowKey,String []fields,String [] values) throws IOException { 
            Table table = connection.getTable(TableName.valueOf(tableName));
            for (int i = 0; i < fields.length; i++) { 
                Put put = new Put(rowKey.getBytes());
                String [] cols = fields[i].split(":");
                if(cols.length == 1)
                    put.addColumn(cols[0].getBytes(), "".getBytes(), values[i].getBytes());
                else
                    put.addColumn(cols[0].getBytes(), cols[1].getBytes(), values[i].getBytes());
                table.put(put);
            }
            table.close();
        }
    
        /** * 查询数据 * @param tableName 表名 * @param column 列族(或列族:列限定符) * @throws IOException */
        public void scanColumn (String tableName,String column) throws IOException { 
            Table table = connection.getTable(TableName.valueOf(tableName));
            Scan scan = new Scan();
            String [] cols = column.split(":");
            if(cols.length==1)
                scan.addFamily(column.getBytes());
            else
                scan.addColumn(Bytes.toBytes(cols[0]), cols[1].getBytes());
            ResultScanner scanner = table.getScanner(scan);
            for (Result result = scanner.next(); result !=null;result = scanner.next()) { 
                for(Cell cell:result.rawCells()){ 
                    System.out.print("列族："+new String(CellUtil.cloneFamily(cell)));
                    System.out.print(",行键："+new String(CellUtil.cloneRow(cell)));
                    System.out.print(",列名："+new String(CellUtil.cloneQualifier(cell)));
                    System.out.print(",值："+new String(CellUtil.cloneValue(cell)));
                    System.out.println();
                }
            }
            table.close();
        }
    
        /** * 修改数据 * @param tableName 表名 * @param rowKey 行键 * @param column 列族(或列族:列限定符) * @param value 值 * @throws IOException */
        public void modifyData(String tableName,String rowKey,String column,String value) throws IOException { 
            Table table = connection.getTable(TableName.valueOf(tableName));
            Put put = new Put(rowKey.getBytes());
            String [] cols = column.split(":");
            if(cols.length==1)
                put.addColumn(column.getBytes(),"".getBytes() , value.getBytes());
            else
                put.addColumn(cols[0].getBytes(),cols[1].getBytes() , value.getBytes());
            table.put(put);
            table.close();
        }
    
        /** * 删除数据 * @param tableName 表名 * @param rowKey 行键 * @throws IOException */
        public void deleteRow(String tableName,String rowKey) throws IOException { 
            Table table = connection.getTable(TableName.valueOf(tableName));
            Delete delete = new Delete(rowKey.getBytes());
            table.delete(delete);
            table.close();
        }
    }

1.  Client.java

package ex3;
    
    import java.io.IOException;
    
    public class Client { 
        public static void main(String[] args) throws IOException { 
            HbaseCRUD hbaseCRUD = new HbaseCRUD();
            String[] cols=new String[]{ "S_No","S_Name","S_Sex","S_Age"};
            //建表
            hbaseCRUD.createTable("student",cols);
            //插入
            hbaseCRUD.addRecord("student","2015001",cols,new String[]{ "2015001","Zhangsan","male","23"});
            hbaseCRUD.addRecord("student","2015002",cols,new String[]{ "2015002","Mary","female","22"});
            hbaseCRUD.addRecord("student","2015003",cols,new String[]{ "2015003","Lisa","male","24"});
            //查询
            hbaseCRUD.scanColumn("student","S_Name");
            //修改
            hbaseCRUD.modifyData("student","2015001","S_Age","22");
            hbaseCRUD.scanColumn("student","S_Age");
            //删除
            hbaseCRUD.deleteRow("student","2015001");
            hbaseCRUD.scanColumn("student","S_No");
            hbaseCRUD.close();
            System.out.println("记得一键三连~");
        }
    }

点击运行后需要点耐心等待，灰色INFO、DEBUG信息都可不用管，报错的话会是红色字体（评论区交流），有tomcat内味了。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1MDM0NzA4_size_16_color_FFFFFF_t_70 10]

最后感谢大佬YCB的帮助。

> **原创不易，请勿转载**（本不富裕的访问量雪上加霜 ）  
> 博主首页：[https://wzlodq.blog.csdn.net/][https_wzlodq.blog.csdn.net]  
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> *如果文章对你有帮助，记得一键三连❤*

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[2021041423441051.png]: /images/20221022/ceab47351d2c4746b5b8317dd4146d09.png
[http_hbase.apache.org_downloads.html]: http://hbase.apache.org/downloads.html
[http_archive.apache.org_dist_hbase]: http://archive.apache.org/dist/hbase/
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