spring hadoop 访问hbase入门

1、  环境准备:

Maven

Eclipse

Java

Spring 版本 3..2.9

2、 Maven  pom.xml配置

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<!-- Spring hadoop  -->
                   <dependency>
            <groupId>org.apache.hbase</groupId>
            <artifactId>hbase-client</artifactId>
            <version>0.96.1.1-hadoop2</version>
         </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>1.6.0.RELEASE</version>
        </dependency>
         <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-hadoop</artifactId>
            <version>2.0.2.RELEASE</version>
         </dependency>

3、 Spring和hadoop、hbase相关配置文件

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  <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mongo="http://www.springframework.org/schema/data/mongo"
    xmlns:hdp="http://www.springframework.org/schema/hadoop"
    xmlns:cache="http://www.springframework.org/schema/cache" xmlns:c="http://www.springframework.org/schema/c"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation=" 
        http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd 
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd 
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd 
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd 
        http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo.xsd
        http://www.springframework.org/schema/hadoop http://www.springframework.org/schema/hadoop/spring-hadoop.xsd 
        http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

  其中标红的是spring  hadoop xml命名空间配置。

Hadoop hbase相关配置文件如下:

   <!--  默认properties-->

    <hdp:configuration>fs.default.name=hdfs://192.98.8.224:8010</hdp:configuration>

    <hdp:hbase-configuration delete-connection="${delete-connection}" zk-quorum="${hbase.zookeeper.quorum}" zk-          port="${hbase.zookeeper.property.clientPort}"/>

对应的properties如下:

hbase.zookeeper.property.clientPort=2181

hbase.zookeeper.quorum=192.98.8.224

hbase.master=192.98.8.224:600000

fs.default.name=hdfs://192.98.8.224:8010

delete-connection=true

#hive jdbc url

hive.url=jdbc:hive://192.98.8.224:10000/default

spring hbasetemplate配置如下:

    <bean id="hbaseTemplate" class="org.springframework.data.hadoop.hbase.HbaseTemplate"> <property name="configuration" ref="hbaseConfiguration" />

</bean>

Hbasetemplate使用代码示例:

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Tile t = hbaseTemplate.get("GW_TILES", "0_1_1", new RowMapper<Tile>() {
 
            @Override
            public Tile mapRow(Result result, int rowNum) throws Exception {
                // TODO Auto-generated method stub
                 
                Tile t = new Tile();
                t.setData(result.getValue("T".getBytes(), "key".getBytes()));
                return t;
            }
        });

  

Hbasetemplate 常用方法简介:

      hbaseTemplate.get("GW_TILES", "0_1_1", new RowMapper  常用于查询,使用示例如下所示:

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Tile t = hbaseTemplate.get("GW_TILES", "0_1_1", new RowMapper<Tile>() {
 
            @Override
            public Tile mapRow(Result result, int rowNum) throws Exception {
                // TODO Auto-generated method stub
                 
                Tile t = new Tile();
                t.setData(result.getValue("T".getBytes(), "key".getBytes()));
                return t;
            }
        });

  hbaseTemplate.execute(dataIdentifier, new TableCallback 常用于更新操作,使用示例如下所示:

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return hbaseTemplate.execute(dataIdentifier, new TableCallback<Boolean>() {
 
            @Override
            public Boolean doInTable(HTableInterface table) throws Throwable {
                // TODO Auto-generated method stub
                boolean flag = false;
                try{
                Delete delete = new Delete(key.getBytes());
                table.delete(delete);
                flag = true;
                }catch(Exception e){
                    e.printStackTrace();
                }
                return flag;
            }
        });

  

备注:spring hbasetemplate针对hbase接口做了强大的封装,普通功能可以使用它强大的接口,同时复杂的功能,还可以使用hbase原生的接口,如:HTableInterface、Result等。其类方法如下图:

同时hbasetemplate封装了hbase连接池等,它的创建和释放通过配置来自动管理。

 

文章转载请注明出处:http://www.cnblogs.com/likehua/p/4016257.html

 

posted @   李克华  阅读(18919)  评论(0编辑  收藏  举报
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