Java连接Hbase的项目实践_开发_开发者_运维开发者技术经验分享

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.KeepeEeTJmWrException$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.apac编程客栈he.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>
         编程客栈   <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>
  php          <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.logjavascriptging.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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