docker 部署hbase 并且java Api连接

首先先运行容器

bash 复制代码

docker run -d --name hbase -p 2181:2181 -p 16010:16010 -p16000:16000 -p 16020:16020 -p 16030:16030 harisekhon/hbase

2.在本机的hosts中注册docker的id

因为docker内部集成了其他环境而其他环境中的ip是docker id 所以需要在hosts中转换

bash 复制代码

192.168.80.120	dockerhbase sa445is094a

3.客户端连接依赖

yaml 复制代码

<dependencies>
            <!--        hbaseClient依赖包，需要排除日志log4j，不然和springboot的冲突了-->

                <!-- https://mvnrepository.com/artifact/org.apache.hbase/hbase-client -->
                <dependency>
                    <groupId>org.apache.hbase</groupId>
                    <artifactId>hbase-client</artifactId>
                    <version>2.5.4</version>
                    <exclusions>
                        <exclusion>
                            <groupId>org.slf4j</groupId>
                            <artifactId>slf4j-log4j12</artifactId>
                        </exclusion>
                    </exclusions>
                </dependency>
                <!-- https://mvnrepository.com/artifact/org.apache.hbase/hbase -->
                <dependency>
                    <groupId>org.apache.hbase</groupId>
                    <artifactId>hbase</artifactId>
                    <version>2.5.4</version>
                    <type>pom</type>
                </dependency>
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.17</version>
            </dependency>

        </dependencies>

俩个依赖出现log4j的依赖申明错误,所以这里需要排除,并且新建一个properties后缀的配置文件

properties 复制代码

log4j.rootLogger=debug, stdout, R

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

# Pattern to output the caller's file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n

log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=example.log

log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=5

log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n

4.java api 调用

java 复制代码

public class Practice4 {
        public static Configuration configuration;
        public static Connection connection;
        public static Admin admin;
        public static void main(String[] args)throws IOException{
            init();
            createTable("student",new String[]{"score"});
            insertData("student","zhangsan","score","English","69");
            insertData("student","zhangsan","score","Math","86");
            insertData("student","zhangsan","score","Computer","77");
            getData("student", "zhangsan", "score","English");
            close();
        }

        public static void init(){
            configuration  = HBaseConfiguration.create();
//            configuration.set("hbase.rootdir","hdfs://192.168.249.132:8020/");
            configuration.set("hbase.zookeeper.quorum", "192.168.249.132");
            configuration.set("hbase.zookeeper.property.clientPort", "2181");
            try{
                connection = ConnectionFactory.createConnection(configuration);
                admin = connection.getAdmin();
            }catch (IOException e){
                e.printStackTrace();
            }
        }

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

        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 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 getData(String tableName,String rowKey,String colFamily, String col)throws  IOException{
            Table table = connection.getTable(TableName.valueOf(tableName));
            Get get = new Get(rowKey.getBytes());
            get.addColumn(colFamily.getBytes(),col.getBytes());
            Result result = table.get(get);
            System.out.println(new String(result.getValue(colFamily.getBytes(),col==null?null:col.getBytes())));
            table.close();
        }

    }