STORM入门之（集成Redis）

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首先需要Redis工具类，自己写了一个简易的源码地址：http://blog.csdn.net/yl3395017/article/details/76172598

测试数据 KEY:test VALUE:world

POM

 <dependency>            <groupId>org.apache.storm</groupId>            <artifactId>storm-redis</artifactId>            <version>1.0.0</version>            <type>jar</type></dependency>

RedisBolt

package com.storm.redis;import org.apache.storm.redis.bolt.AbstractRedisBolt;import org.apache.storm.redis.common.config.JedisPoolConfig;import org.apache.storm.topology.OutputFieldsDeclarer;import org.apache.storm.tuple.Tuple;import org.apache.storm.tuple.Values;import redis.clients.jedis.JedisCommands;/** * Created with IntelliJ IDEA. * User: Administrator * Date: 17-8-23 * Time: 下午2:00 * To change this template use File | Settings | File Templates. */public class RedisBolt extends AbstractRedisBolt {    public RedisBolt(JedisPoolConfig config) {        super(config);    }    @Override    public void execute(Tuple input) {        JedisCommands jedisCommands = null;        try {            jedisCommands = getInstance();            String wordName = input.getStringByField("index");            String countStr = jedisCommands.get(wordName);            if (countStr != null) {                System.out.print("#######countStr#########:"+countStr);            } else {            }        } finally {            if (jedisCommands != null) {                returnInstance(jedisCommands);            }        }    }    @Override    public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) {        //To change body of implemented methods use File | Settings | File Templates.    }}

Topology构建方式

  /**     * 构建RedisBolt     */    private static void builtRedisBolt(TopologyBuilder builder){        JedisPoolConfig poolConfig = new JedisPoolConfig.Builder().setHost("10.2.4.12").setPort(6379).build();        RedisBolt rb = new  RedisBolt(poolConfig);        builder.setBolt("redis-bolt",rb,1).shuffleGrouping("BoltA");    }

结果

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