Java连接Hbase的项目实践
作者：枫叶梨花
HBase是基于Hadoop的高可靠、高性能、面向列的NoSQL数据库,它提供了对海量数据的存储和实时读写的能力,本文主要介绍了Java连接Hbase的项目实践,具有一定的参考价值,感兴趣的可以了解一下
我在网上试 了很多代码，但是大部分都不能实现，Java连接Hbase，一直报一个错
java.util.concurrent.ExecutionException: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /hbase/hbaseid
一直也不清楚为什么。后面各种尝试，最后尝试出来了，能正常连接hbase，但是也不知道为啥能出来，所以该代码可能只能解决我自己的问题，其他人的问题请谨慎参考，不保证准确与否，因为我也不知道为什么？？？？
引入Jar，本公司使用的Hbase是2.0.2.1.7.x，所以我使用的Jar也是2.0.2版本 ，根据实际情况引入，然后还用了log4j2的日志
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.hbase</groupId>
<artifactId>hbase-operation</artifactId>
<version>0.0.1</version>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-server</artifactId>
<version>2.0.2</version>
<exclusions>
<exclusion>
<artifactId>servlet-api</artifactId>
<groupId>javax.servlet</groupId>
</exclusion>
<exclusion>
<artifactId>slf4j-log4j12</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-client</artifactId>
<version>2.0.2</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.22</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.32</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.17.1</version>
<exclusions>
<exclusion>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.17.1</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>2.17.0</version>
<exclusions>
<exclusion>
<artifactId>log4j-api</artifactId>
<groupId>org.apache.logging.log4j</groupId>
</exclusion>
<exclusion>
<artifactId>log4j-core</artifactId>
<groupId>org.apache.logging.log4j</groupId>
</exclusion>
<exclusion>
<artifactId>slf4j-api</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<archive>
<manifest>
<mainClass>com.hbase.HbaseSearch</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
日志配置
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="DEBUG">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
</Console>
</Appenders>
<Loggers>
<Root level="info">
<AppenderRef ref="Console"/>
</Root>
</Loggers>
</Configuration>
实际代码
package com.hbase;
import lombok.extern.slf4j.Slf4j;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.Bytes;
import java.util.List;
/**
* @author panlf
* @date 2023/11/1
*/
@Slf4j
public class HbaseSearch {
public static void main(String[] args) throws Exception {
log.info("start111");
// 创建HBase配置对象
Configuration config = HBaseConfiguration.create();
config.set("hbase.zookeeper.quorum", "fdp-master,fdp-slave1,fdp-slave2,fdp-slave3"); // 设置ZooKeeper地址
config.set("hbase.rootdir","hdfs://fdp-master:8020/apps/hbase/data");
config.set("zookeeper.znode.parent","/hbase-unsecure");
// 创建HBase连接
Connection connection = ConnectionFactory.createConnection(config);
Admin admin = connection.getAdmin();
// 获取所有表名
List<TableDescriptor> tableDescriptors = admin.listTableDescriptors();
for (TableDescriptor tableDescriptor : tableDescriptors) {
System.out.println("表名： " + Bytes.toString(tableDescriptor.getTableName().getName()));
}
System.out.println("over");
// 关闭资源
admin.close();
connection.close();
}
}
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