redis与spring整合使用的步骤实例教程

<dependency>
 <groupId>redis.clients</groupId>
 <artifactId>jedis</artifactId>
 <version>2.6.0</version>
 </dependency>

<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
 <property name="maxTotal" value="${redis.maxTotal}" />
</bean>
 
 <bean class="redis.clients.jedis.ShardedJedisPool">
 <constructor-arg index="0" ref="poolConfig" />
 <constructor-arg index="1">
  <list>
  <bean class="redis.clients.jedis.JedisShardInfo">
   <constructor-arg index="0" value="${redis.node1.host}" />
   <constructor-arg index="1" value="${redis.node1.port}" />
  </bean>
  </list>
 </constructor-arg>
 </bean>
</beans>

redis.maxTotal=100
redis.node1.host=127.0.0.1
redis.node1.port=6379

package xx.service;
/**
 * 为了抽取相同的操作代码
 * @author yeying
 *<p>Description:</p>
 *<p>Company:</p>
 * @date:2017年12月5日 下午9:02:44
 */
public interface Function<T,E> {
 public T callback(E e);
}

package com.taotao.common.service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import redis.clients.jedis.ShardedJedis;
import redis.clients.jedis.ShardedJedisPool;

/**
 * redis的相关操作
 * @author yeying
 *<p>Description:</p>
 *<p>Company:</p>
 * @date:2017年12月3日 下午2:11:47
 */
@Service
public class RedisService {

 @Autowired(required=false) //需要再注入进去
 private ShardedJedisPool shardedJedisPool;

 private <T> T execute(Function<T, ShardedJedis> fun){
 ShardedJedis shardedJedis = null;
 try {
  // 从连接池中获取到jedis分片对象
  shardedJedis = shardedJedisPool.getResource();
  // 从redis中获取数据
  return fun.callback(shardedJedis);
 } catch (Exception e) {
  e.printStackTrace();
 } finally {
  if (null != shardedJedis) {
  // 关闭，检测连接是否有效，有效则放回到连接池中，无效则重置状态
  shardedJedis.close();
  }
 }
 return null;
 }

 /**
 * 执行set操作
 * @param key
 * @param value
 * @return
 */
 public String set(final String key,final String value){
 return this.execute(new Function<String, ShardedJedis>() {
  @Override
  public String callback(ShardedJedis e) {
  return e.set(key, value);
  }
 });
 }

 /**
 * 执行set操作，并设置生存时间，单位为秒
 * @param key
 * @param value
 * @param seconds
 * @return
 */
 public String set(final String key,final String value,final Integer seconds){
 return this.execute(new Function<String, ShardedJedis>() {
  @Override
  public String callback(ShardedJedis e) {
  String str =e.set(key, value);
  e.expire(key, seconds);
  return str;
  }
 });
 }

 /**
 * 执行get操作
 * @param key
 * @return
 */
 public String get(final String key){
 return this.execute(new Function<String, ShardedJedis>() {
  @Override
  public String callback(ShardedJedis e) {
  return e.get(key);
  }
 });
 }

 /**
 * 执行set操作
 * @param key
 * @return
 */
 public Long del(final String key){
 return this.execute(new Function<Long, ShardedJedis>() {
  @Override
  public Long callback(ShardedJedis e) {
  return e.del(key);
  }
 });
 }

 /**
 * 设置生存时间，单位为秒
 * @param key
 * @param seconds
 * @return
 */
 public Long expire(final String key, final Integer seconds) {
 return this.execute(new Function<Long, ShardedJedis>() {
  @Override
  public Long callback(ShardedJedis e) {
  return e.expire(key, seconds);
  }
 });
 }
}