Spring 整合 Jedis

2017-05-26 本文已影响0人灰气球

spring 整合 jedis

单机版整合

添加配置文件

<!-- 连接池配置 -->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
    <!-- 最大连接数 -->
    <property name="maxTotal" value="30" />
    <!-- 最大空闲连接数 -->
    <property name="maxIdle" value="10" />
    <!-- 每次释放连接的最大数目 -->
    <property name="numTestsPerEvictionRun" value="1024" />
    <!-- 释放连接的扫描间隔（毫秒） -->
    <property name="timeBetweenEvictionRunsMillis" value="30000" />
    <!-- 连接最小空闲时间 -->
    <property name="minEvictableIdleTimeMillis" value="1800000" />
    <!-- 连接空闲多久后释放, 当空闲时间>该值 且 空闲连接>最大空闲连接数 时直接释放 -->
    <property name="softMinEvictableIdleTimeMillis" value="10000" />
    <!-- 获取连接时的最大等待毫秒数,小于零:阻塞不确定的时间,默认-1 -->
    <property name="maxWaitMillis" value="1500" />
    <!-- 在获取连接的时候检查有效性, 默认false -->
    <property name="testOnBorrow" value="true" />
    <!-- 在空闲时检查有效性, 默认false -->
    <property name="testWhileIdle" value="true" />
    <!-- 连接耗尽时是否阻塞, false报异常,ture阻塞直到超时, 默认true -->
    <property name="blockWhenExhausted" value="false" />
</bean> 

<!-- jedis客户端单机版 -->
<bean id="redisClient" class="redis.clients.jedis.JedisPool">
    <constructor-arg name="host" value="xxxx.xxxx.xxxx.xxxx"></constructor-arg>
    <constructor-arg name="port" value="6379"></constructor-arg>
    <constructor-arg name="poolConfig" ref="jedisPoolConfig"></constructor-arg>
</bean>

测试代码

/**
 * 单机版测试 整合spring
 * <p>Title: testSpringJedisSingle</p>
 * <p>Description: </p>
 */
@Test
public void testSpringJedisSingle() {
    ApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:spring/applicationContext-*.xml");
    JedisPool pool = (JedisPool) applicationContext.getBean("redisClient");
    Jedis jedis = pool.getResource();
    String string = jedis.get("key1");
    System.out.println(string);
    jedis.close();
    pool.close();
}

集群版配置

配置

<bean id="redisClient" class="redis.clients.jedis.JedisCluster">
    <constructor-arg name="nodes">
        <set>
            <bean class="redis.clients.jedis.HostAndPort">
                <constructor-arg name="host" value="192.168.x.x"></constructor-arg>
                <constructor-arg name="port" value="7001"></constructor-arg>
            </bean>
            <bean class="redis.clients.jedis.HostAndPort">
                <constructor-arg name="host" value="192.168.x.x"></constructor-arg>
                <constructor-arg name="port" value="7002"></constructor-arg>
            </bean>
            <bean class="redis.clients.jedis.HostAndPort">
                <constructor-arg name="host" value="192.168.xx.xxx"></constructor-arg>
                <constructor-arg name="port" value="7003"></constructor-arg>
            </bean>
            <bean class="redis.clients.jedis.HostAndPort">
                <constructor-arg name="host" value="192.168.xx.xxx"></constructor-arg>
                <constructor-arg name="port" value="7004"></constructor-arg>
            </bean>
            <bean class="redis.clients.jedis.HostAndPort">
                <constructor-arg name="host" value="192.168.xx.xxx"></constructor-arg>
                <constructor-arg name="port" value="7005"></constructor-arg>
            </bean>
            <bean class="redis.clients.jedis.HostAndPort">
                <constructor-arg name="host" value="192.168.xxx.xxx"></constructor-arg>
                <constructor-arg name="port" value="7006"></constructor-arg>
            </bean>
        </set>
    </constructor-arg>
    <constructor-arg name="poolConfig" ref="jedisPoolConfig"></constructor-arg>
</bean>

测试代码

@Test
public void testSpringJedisCluster() {
    ApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:spring/applicationContext-*.xml");
    JedisCluster jedisCluster =  (JedisCluster) applicationContext.getBean("redisClient");
    String string = jedisCluster.get("key1");
    System.out.println(string);
    jedisCluster.close();
}

添加 jedis dao 对象

接口

public interface JedisClient {

    String get(String key);
    String set(String key,String value);
    String hget(String hkey, String key);
    long hset(String hkey, String key, String value);
    long incr(String key);
    long expire(String key, int second);
    long ttl(String key);
    long hdel(String key);
    long hdel(String key, String field);

}

单机版实现

public class JedisClientSingle implements JedisClient{

    @Autowired
    private JedisPool jedisPool; 
    
    @Override
    public String get(String key) {
        Jedis jedis = jedisPool.getResource();
        String string = jedis.get(key);
        jedis.close();
        return string;
    }

    @Override
    public String set(String key, String value) {
        Jedis jedis = jedisPool.getResource();
        String string = jedis.set(key, value);
        jedis.close();
        return string;
    }

    @Override
    public String hget(String hkey, String key) {
        Jedis jedis = jedisPool.getResource();
        String string = jedis.hget(hkey, key);
        jedis.close();
        return string;
    }

    @Override
    public long hset(String hkey, String key, String value) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.hset(hkey, key, value);
        jedis.close();
        return result;
    }

    @Override
    public long incr(String key) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.incr(key);
        jedis.close();
        return result;
    }

    @Override
    public long expire(String key, int second) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.expire(key, second);
        jedis.close();
        return result;
    }

    @Override
    public long ttl(String key) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.ttl(key);
        jedis.close();
        return result;
    }

    @Override
    public long hdel(String key) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.del(key);
        jedis.close();
        return result;
    }

    @Override
    public long hdel(String key, String fields) {
        Jedis jedis = jedisPool.getResource();
        Long result = jedis.hdel(key, fields);
        jedis.close();
        return result;
        
    }

}

集群版实现

public class JedisClientCluster implements JedisClient {

    @Autowired
    private JedisCluster jedisCluster;
    
    @Override
    public String get(String key) {
        return jedisCluster.get(key);
    }

    @Override
    public String set(String key, String value) {
        return jedisCluster.set(key, value);
    }

    @Override
    public String hget(String hkey, String key) {
        return jedisCluster.hget(hkey, key);
    }

    @Override
    public long hset(String hkey, String key, String value) {
        return jedisCluster.hset(hkey, key, value);
    }

    @Override
    public long incr(String key) {
        return jedisCluster.incr(key);
    }

    @Override
    public long expire(String key, int second) {
        return jedisCluster.expire(key, second);
    }

    @Override
    public long ttl(String key) {
        return jedisCluster.ttl(key);
    }

    @Override
    public long hdel(String key) {
        return jedisCluster.del(key);
    }

    @Override
    public long hdel(String key, String field) {
        return jedisCluster.hdel(key, field);
    }

}

配置文件增加项目启动创建单例的dao对象

单机版

<bean id="jedisClient" class="com.taotao.rest.dao.impl.JedisClientSingle"/>

集群版

<bean id="jedisCluster" class="com.taotao.rest.dao.impl.JedisClientCluster"/>

把缓存添加到业务逻辑

@Override
public List<TbContent> getContentList(long contentCid) {
    //从缓存中取内容 开始
    try {
        String result = jedisClient.hget(INDEX_CONTENT_REDIS_KEY, contentCid + "");
        if (!StringUtils.isBlank(result)) {
            //把字符串转换成list
            List<TbContent> resultList = JsonUtils.jsonToList(result, TbContent.class);
            return resultList;
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    //从缓存中取内容 结束

    //根据内容分类id查询内容列表
    TbContentExample example = new TbContentExample();
    Criteria criteria = example.createCriteria();
    criteria.andCategoryIdEqualTo(contentCid);
    //执行查询
    List<TbContent> list = contentMapper.selectByExample(example);

    //向缓存中添加内容  开始
    try {
        //把list转换成字符串
        String cacheString = JsonUtils.objectToJson(list);
        jedisClient.hset(INDEX_CONTENT_REDIS_KEY, contentCid + "", cacheString);
    } catch (Exception e) {
        e.printStackTrace();
    }
    //向缓存中添加内容  结束
    
    return list;
}

缓存同步

当后台管理系统，修改内容之后需要通知redis把修改的内容对应的分类id的key删除。

Spring 整合 Jedis

spring 整合 jedis

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