一、Redis与spring的整合一般分为spring-data-redis整合和JedisPool整合，先看看两者的区别
1)、引用的依赖不同：
spring-data-redis使用的依赖如下：
<span style="color:#000000"><code> <span style="color:#006666"><<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">groupId</span>></span>org.springframework.data<span style="color:#006666"></<span style="color:#4f4f4f">groupId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">artifactId</span>></span>spring-data-redis<span style="color:#006666"></<span style="color:#4f4f4f">artifactId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">version</span>></span>1.0.2.RELEASE<span style="color:#006666"></<span style="color:#4f4f4f">version</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">dependency</span>></span></code></span>JedisPool使用的依赖如下：
<span style="color:#000000"><code> <span style="color:#006666"><<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">groupId</span>></span>redis.clients<span style="color:#006666"></<span style="color:#4f4f4f">groupId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">artifactId</span>></span>jedis<span style="color:#006666"></<span style="color:#4f4f4f">artifactId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">version</span>></span>2.7.2<span style="color:#006666"></<span style="color:#4f4f4f">version</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">type</span>></span>jar<span style="color:#006666"></<span style="color:#4f4f4f">type</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">scope</span>></span>compile<span style="color:#006666"></<span style="color:#4f4f4f">scope</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">dependency</span>></span></code></span>2)、管理Jedis实例方式、操作redis服务的不同：
spring-data-redis：
通过org.springframework.data.redis.connection.jedis.JedisConnectionFactory来管理，即通过工厂类管理，然后通过配置的模版bean，操作redis服务，代码段中充斥大量与业务无关的模版片段代码，代码冗余，不易维护，比如像下面的代码：
<span style="color:#000000"><code> <span style="color:#9b859d">@Autowired</span>
<span style="color:#000088">protected</span> RedisTemplate<Serializable, Serializable> redisTemplate;
<span style="color:#000088">public</span> <span style="color:#000088">void</span> <span style="color:#009900">saveUser</span>(<span style="color:#000088">final</span> User user) {
redisTemplate.execute(<span style="color:#000088">new</span> RedisCallback<Object>() {
<span style="color:#9b859d">@Override</span>
<span style="color:#000088">public</span> Object <span style="color:#009900">doInRedis</span>(RedisConnection connection) <span style="color:#000088">throws</span> DataAccessException {
connection.set(redisTemplate.getStringSerializer().serialize(<span style="color:#009900">"user.uid."</span> + user.getId()),
redisTemplate.getStringSerializer().serialize(user.getName()));
<span style="color:#000088">return</span> <span style="color:#000088">null</span>;
}
});
}</code></span><span style="color:#000000"><code><span style="color:#9b859d">@Override</span>
<span style="color:#000088">public</span> User <span style="color:#009900">getUser</span>(<span style="color:#000088">final</span> <span style="color:#000088">long</span> id) {
<span style="color:#000088">return</span> redisTemplate.execute(<span style="color:#000088">new</span> RedisCallback<User>() {
<span style="color:#9b859d">@Override</span>
<span style="color:#000088">public</span> User <span style="color:#009900">doInRedis</span>(RedisConnection connection) <span style="color:#000088">throws</span> DataAccessException {
<span style="color:#000088">byte</span>[] key = redisTemplate.getStringSerializer().serialize(<span style="color:#009900">"user.uid."</span> + id);
<span style="color:#000088">if</span> (connection.exists(key)) {
<span style="color:#000088">byte</span>[] value = connection.get(key);
String name = redisTemplate.getStringSerializer().deserialize(value);
User user = <span style="color:#000088">new</span> User();
user.setName(name);
user.setId(id);
<span style="color:#000088">return</span> user;
}
<span style="color:#000088">return</span> <span style="color:#000088">null</span>;
}
});
}</code></span>JedisPool方式：
通过redis.clients.jedis.JedisPool来管理，即通过池来管理，通过池对象获取jedis实例，然后通过jedis实例直接操作redis服务，剔除了与业务无关的冗余代码，如下面的代码片段：
<span style="color:#000000"><code> <span style="color:#9b859d">@Autowired</span>
<span style="color:#000088">private</span> JedisPool jedisPool;
<span style="color:#9b859d">@Override</span>
<span style="color:#000088">public</span> String <span style="color:#009900">save</span>(String key,String val) {
Jedis jedis = jedisPool.getResource();
<span style="color:#000088">return</span> jedis.set(key, val);
}
</code></span>从工厂类到池的方式变化，就相当于mybatis连接mysql方变化是一样的，代码变得更简洁，维护也更容易了。
spring-data-redis的集成方式可以查看 java之redis篇(spring-data-redis整合) 这边博文。
但是本文与spring集成并未直接采用JedisPool，而是采用了 ShardedJedisPool ，为什么呢？
因为ShardedJedisPool可以通过一致性哈希实现分布式存储
shared一致性哈希采用以下方案：
1、Redis服务器节点划分：将每台服务器节点采用hash算法划分为160个虚拟节点(可以配置划分权重)
2、将划分虚拟节点采用TreeMap存储
3、对每个Redis服务器的物理连接采用LinkedHashMap存储
4、对Key or KeyTag 采用同样的hash算法，然后从TreeMap获取大于等于键hash值得节点，取最邻近节点存储；当key的hash值大于虚拟节点hash值得最大值时，存入第一个虚拟节点sharded采用的hash算法：MD5 和 MurmurHash两种；默认采用64位的MurmurHash算法；
更为深入解释可以查看 Jedis分片连接池(分布式) 、 jedis源码中ShardedJedis实现sharding文章。
使用非分片的JedisPool和使用分片的ShardedJedisPool示例可以查看 Java内存数据库实践之深入浅出Redis - Jedis分布式（Sharding/Sharded) 这篇文章。
二、使用ShardedJedisPool与spring集成
集成参照：https://my.oschina.net/u/866380/blog/521658
相关依赖jar包
<span style="color:#000000"><code> <span style="color:#006666"><<span style="color:#4f4f4f">properties</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">project.build.sourceEncoding</span>></span>UTF-8<span style="color:#006666"></<span style="color:#4f4f4f">project.build.sourceEncoding</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">spring.version</span>></span>4.2.6.RELEASE<span style="color:#006666"></<span style="color:#4f4f4f">spring.version</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">properties</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">dependencies</span>></span>
<span style="color:#880000"><!-- spring begin --></span>
<span style="color:#006666"><<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">groupId</span>></span>org.springframework<span style="color:#006666"></<span style="color:#4f4f4f">groupId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">artifactId</span>></span>spring-context<span style="color:#006666"></<span style="color:#4f4f4f">artifactId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">version</span>></span>${spring.version}<span style="color:#006666"></<span style="color:#4f4f4f">version</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">groupId</span>></span>org.springframework<span style="color:#006666"></<span style="color:#4f4f4f">groupId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">artifactId</span>></span>spring-context-support<span style="color:#006666"></<span style="color:#4f4f4f">artifactId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">version</span>></span>${spring.version}<span style="color:#006666"></<span style="color:#4f4f4f">version</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">groupId</span>></span>org.springframework<span style="color:#006666"></<span style="color:#4f4f4f">groupId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">artifactId</span>></span>spring-test<span style="color:#006666"></<span style="color:#4f4f4f">artifactId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">version</span>></span>${spring.version}<span style="color:#006666"></<span style="color:#4f4f4f">version</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">groupId</span>></span>redis.clients<span style="color:#006666"></<span style="color:#4f4f4f">groupId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">artifactId</span>></span>jedis<span style="color:#006666"></<span style="color:#4f4f4f">artifactId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">version</span>></span>2.7.2<span style="color:#006666"></<span style="color:#4f4f4f">version</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">type</span>></span>jar<span style="color:#006666"></<span style="color:#4f4f4f">type</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">groupId</span>></span>junit<span style="color:#006666"></<span style="color:#4f4f4f">groupId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">artifactId</span>></span>junit<span style="color:#006666"></<span style="color:#4f4f4f">artifactId</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">version</span>></span>4.11<span style="color:#006666"></<span style="color:#4f4f4f">version</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">scope</span>></span>test<span style="color:#006666"></<span style="color:#4f4f4f">scope</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">dependency</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">dependencies</span>></span></code></span>Spring 配置文件spring-redis.xml
<span style="color:#000000"><code><span style="color:#006666"><?xml version="1.0" encoding="UTF-8"?></span>
<span style="color:#006666"><<span style="color:#4f4f4f">beans</span> <span style="color:#4f4f4f">xmlns</span>=<span style="color:#009900">"http://www.springframework.org/schema/beans"</span>
<span style="color:#4f4f4f">xmlns:xsi</span>=<span style="color:#009900">"http://www.w3.org/2001/XMLSchema-instance"</span>
<span style="color:#4f4f4f">xmlns:context</span>=<span style="color:#009900">"http://www.springframework.org/schema/context"</span>
<span style="color:#4f4f4f">xsi:schemaLocation</span>=<span style="color:#009900">"
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"</span>></span>
<span style="color:#880000"><!-- 开启注解驱动 --></span>
<span style="color:#006666"><<span style="color:#4f4f4f">context:annotation-config</span>></span><span style="color:#006666"></<span style="color:#4f4f4f">context:annotation-config</span>></span>
<span style="color:#880000"><!-- 引入属性文件 --></span>
<span style="color:#006666"><<span style="color:#4f4f4f">context:property-placeholder</span> <span style="color:#4f4f4f">location</span>=<span style="color:#009900">"classpath:spring-redis.properties"</span> <span style="color:#4f4f4f">ignore-unresolvable</span>=<span style="color:#009900">"true"</span> /></span>
<span style="color:#880000"><!-- 配置redis数据库连接池 --></span>
<span style="color:#006666"><<span style="color:#4f4f4f">bean</span> <span style="color:#4f4f4f">id</span>=<span style="color:#009900">"jedisPoolConfig"</span> <span style="color:#4f4f4f">class</span>=<span style="color:#009900">"redis.clients.jedis.JedisPoolConfig"</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">property</span> <span style="color:#4f4f4f">name</span>=<span style="color:#009900">"maxTotal"</span> <span style="color:#4f4f4f">value</span>=<span style="color:#009900">"${redis.pool.maxActive}"</span> /></span>
<span style="color:#006666"><<span style="color:#4f4f4f">property</span> <span style="color:#4f4f4f">name</span>=<span style="color:#009900">"maxIdle"</span> <span style="color:#4f4f4f">value</span>=<span style="color:#009900">"${redis.pool.maxIdle}"</span> /></span>
<span style="color:#006666"><<span style="color:#4f4f4f">property</span> <span style="color:#4f4f4f">name</span>=<span style="color:#009900">"minIdle"</span> <span style="color:#4f4f4f">value</span>=<span style="color:#009900">"${redis.pool.minIdle}"</span> /></span>
<span style="color:#006666"><<span style="color:#4f4f4f">property</span> <span style="color:#4f4f4f">name</span>=<span style="color:#009900">"maxWaitMillis"</span> <span style="color:#4f4f4f">value</span>=<span style="color:#009900">"${redis.pool.maxWait}"</span> /></span>
<span style="color:#006666"><<span style="color:#4f4f4f">property</span> <span style="color:#4f4f4f">name</span>=<span style="color:#009900">"lifo"</span> <span style="color:#4f4f4f">value</span>=<span style="color:#009900">"${redis.pool.lifo}"</span> /></span>
<span style="color:#006666"><<span style="color:#4f4f4f">property</span> <span style="color:#4f4f4f">name</span>=<span style="color:#009900">"testOnBorrow"</span> <span style="color:#4f4f4f">value</span>=<span style="color:#009900">"${redis.pool.testOnBorrow}"</span> /></span>
<span style="color:#006666"></<span style="color:#4f4f4f">bean</span>></span>
<span style="color:#880000"><!-- 配置redis共享连接池，业务层主要通过该bean访问redis服务器 --></span>
<span style="color:#006666"><<span style="color:#4f4f4f">bean</span> <span style="color:#4f4f4f">id</span>=<span style="color:#009900">"shardedJedisPool"</span> <span style="color:#4f4f4f">class</span>=<span style="color:#009900">"redis.clients.jedis.ShardedJedisPool"</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">constructor-arg</span> <span style="color:#4f4f4f">index</span>=<span style="color:#009900">"0"</span> <span style="color:#4f4f4f">ref</span>=<span style="color:#009900">"jedisPoolConfig"</span> /></span>
<span style="color:#006666"><<span style="color:#4f4f4f">constructor-arg</span> <span style="color:#4f4f4f">index</span>=<span style="color:#009900">"1"</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">list</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">bean</span> <span style="color:#4f4f4f">class</span>=<span style="color:#009900">"redis.clients.jedis.JedisShardInfo"</span>></span>
<span style="color:#006666"><<span style="color:#4f4f4f">constructor-arg</span> <span style="color:#4f4f4f">index</span>=<span style="color:#009900">"0"</span> <span style="color:#4f4f4f">value</span>=<span style="color:#009900">"${redis.uri.0}"</span> /></span>
<span style="color:#006666"></<span style="color:#4f4f4f">bean</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">list</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">constructor-arg</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">bean</span>></span>
<span style="color:#006666"></<span style="color:#4f4f4f">beans</span>></span></code></span>几个注意的点：
（1）如果你有多个数据源需要通过<context:property-placeholder>管理，且不愿意放在一个配置文件里，那么一定要加上ignore-unresolvable=“true”
（2）注意新版的（具体从哪个版本开始不清楚，有兴趣可以查一下）JedisPoolConfig的property name，不是maxActive而是maxTotal，而且没有maxWait属性，建议看一下Jedis源码。
（3）ShardedJedisPool有多种构造函数，选择你需要的（具体看源码），示例中只初始化了一个分片，并使用了通过指定host的构造器（具体格式见下文），如果有集群，在下增加新的即可。
（4）当然，你的spring核心配置文件中得有扫描组件。
（5）客户端分片使用ShardedJedisPool，设置DB和超时时间
redis连接池配置文件spring-redis.properties
<span style="color:#000000"><code><span style="color:#009900">#最大分配的对象数</span>
redis<span style="color:#009900">.pool</span><span style="color:#009900">.maxActive</span>=<span style="color:#006666">10</span>
<span style="color:#009900">#最大能够保持idel状态的对象数 </span>
redis<span style="color:#009900">.pool</span><span style="color:#009900">.maxIdle</span>=<span style="color:#006666">10</span>
<span style="color:#009900">#最小空闲的对象数。2.5.1以上版本有效</span>
redis<span style="color:#009900">.pool</span><span style="color:#009900">.minIdle</span>=<span style="color:#006666">8</span>
<span style="color:#009900">#当池内没有返回对象时，最大等待时间</span>
redis<span style="color:#009900">.pool</span><span style="color:#009900">.maxWait</span>=<span style="color:#006666">1000</span>
<span style="color:#009900">#是否启用Lifo。如果不设置，默认为true。2.5.1以上版本有效</span>
redis<span style="color:#009900">.pool</span><span style="color:#009900">.lifo</span>=false
<span style="color:#009900">#当调用borrow Object方法时，是否进行有效性检查 </span>
redis<span style="color:#009900">.pool</span><span style="color:#009900">.testOnBorrow</span>=false
<span style="color:#009900">## REDIS URI</span>
<span style="color:#009900">## 使用DB0库</span>
<span style="color:#009900">##redis://用户名:密码@host:port/库，其中用户名随意填写的</span>
redis<span style="color:#009900">.uri</span><span style="color:#006666">.0</span>=redis://testRedis:foobared@119<span style="color:#006666">.254</span><span style="color:#006666">.166</span><span style="color:#006666">.136</span>:<span style="color:#006666">6379</span>/<span style="color:#006666">0</span></code></span>注意：redis uir的格式为 redis://用户名:密码@host:port/库，其中用户名随意填写的,如果没有用户名和密码，格式为redis://:@host:port/库，使用这种方式，配置内容少，还能自定义db index，非常适合开发、测试和线上环境的切换
代码实现
（1）推荐大家使用统一的类来管理Jedis实例的生成和回收，参考代码如下：JedisDataSourceImpl
<span style="color:#000000"><code><span style="color:#9b859d">@Repository</span>(<span style="color:#009900">"jedisDS"</span>)
<span style="color:#000088">public</span> <span style="color:#000088">class</span> <span style="color:#4f4f4f">JedisDataSourceImpl</span> <span style="color:#000088">implements</span> <span style="color:#4f4f4f">JedisDataSource</span> {
<span style="color:#000088">private</span> <span style="color:#000088">static</span> <span style="color:#000088">final</span> Logger LOG = LoggerFactory.getLogger(JedisDataSourceImpl.class);
<span style="color:#9b859d">@Autowired</span>
<span style="color:#000088">private</span> ShardedJedisPool shardedJedisPool;
<span style="color:#9b859d">@Override</span>
<span style="color:#000088">public</span> ShardedJedis <span style="color:#009900">getRedisClient</span>() {
ShardedJedis shardJedis = <span style="color:#000088">null</span>;
<span style="color:#000088">try</span> {
shardJedis = shardedJedisPool.getResource();
<span style="color:#000088">return</span> shardJedis;
} <span style="color:#000088">catch</span> (Exception e) {
LOG.error(<span style="color:#009900">"[JedisDS] getRedisClent error:"</span> + e.getMessage());
<span style="color:#000088">if</span> (<span style="color:#000088">null</span> != shardJedis)
shardJedis.close();
}
<span style="color:#000088">return</span> <span style="color:#000088">null</span>;
}
<span style="color:#9b859d">@Override</span>
<span style="color:#000088">public</span> <span style="color:#000088">void</span> <span style="color:#009900">returnResource</span>(ShardedJedis shardedJedis) {
shardedJedis.close();
}
<span style="color:#9b859d">@Override</span>
<span style="color:#000088">public</span> <span style="color:#000088">void</span> <span style="color:#009900">returnResource</span>(ShardedJedis shardedJedis, <span style="color:#000088">boolean</span> broken) {
shardedJedis.close();
}
}</code></span>这里要注意的是Jedis实例的回收，从jedis2.6开始，原returnResource方式已经提示在后续版本中不再支持，所以不建议大家再用ShardedJedisPool里的returnResource和retureBrokenResource方法，虽然在2.7中还支持（毕竟是因为这两个方法存在漏洞）。
（2）编写具体的Jedis操作类（片断）：RedisClientTemplate
<span style="color:#000000"><code><span style="color:#9b859d">@Repository</span>(<span style="color:#009900">"redisClientTemplate"</span>)
<span style="color:#000088">public</span> <span style="color:#000088">class</span> <span style="color:#4f4f4f">RedisClientTemplate</span> {
<span style="color:#000088">private</span> <span style="color:#000088">static</span> <span style="color:#000088">final</span> Logger log = LoggerFactory.getLogger(RedisClientTemplate.class);
<span style="color:#9b859d">@Autowired</span>
<span style="color:#000088">private</span> JedisDataSource redisDataSource;
<span style="color:#000088">public</span> <span style="color:#000088">void</span> <span style="color:#009900">disconnect</span>() {
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
shardedJedis.disconnect();
}
<span style="color:#880000">/**
* 设置单个值
*
*<span style="color:#4f4f4f"> @param</span> key
*<span style="color:#4f4f4f"> @param</span> value
*<span style="color:#4f4f4f"> @return</span>
*/</span>
<span style="color:#000088">public</span> String <span style="color:#009900">set</span>(String key, String value) {
String result = <span style="color:#000088">null</span>;
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.set(key, value);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
<span style="color:#880000">/**
* 获取单个值
*
*<span style="color:#4f4f4f"> @param</span> key
*<span style="color:#4f4f4f"> @return</span>
*/</span>
<span style="color:#000088">public</span> String <span style="color:#009900">get</span>(String key) {
String result = <span style="color:#000088">null</span>;
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.get(key);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">public</span> Boolean <span style="color:#009900">exists</span>(String key) {
Boolean result = <span style="color:#000088">false</span>;
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.exists(key);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">public</span> String <span style="color:#009900">type</span>(String key) {
String result = <span style="color:#000088">null</span>;
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.type(key);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
<span style="color:#880000">/**
* 在某段时间后失效
*
*<span style="color:#4f4f4f"> @param</span> key
*<span style="color:#4f4f4f"> @param</span> seconds
*<span style="color:#4f4f4f"> @return</span>
*/</span>
<span style="color:#000088">public</span> Long <span style="color:#009900">expire</span>(String key, <span style="color:#000088">int</span> seconds) {
Long result = <span style="color:#000088">null</span>;
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.expire(key, seconds);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
<span style="color:#880000">/**
* 在某个时间点失效
*
*<span style="color:#4f4f4f"> @param</span> key
*<span style="color:#4f4f4f"> @param</span> unixTime
*<span style="color:#4f4f4f"> @return</span>
*/</span>
<span style="color:#000088">public</span> Long <span style="color:#009900">expireAt</span>(String key, <span style="color:#000088">long</span> unixTime) {
Long result = <span style="color:#000088">null</span>;
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.expireAt(key, unixTime);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">public</span> Long <span style="color:#009900">ttl</span>(String key) {
Long result = <span style="color:#000088">null</span>;
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.ttl(key);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">public</span> <span style="color:#000088">boolean</span> <span style="color:#009900">setbit</span>(String key, <span style="color:#000088">long</span> offset, <span style="color:#000088">boolean</span> value) {
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
<span style="color:#000088">boolean</span> result = <span style="color:#000088">false</span>;
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.setbit(key, offset, value);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">public</span> <span style="color:#000088">boolean</span> <span style="color:#009900">getbit</span>(String key, <span style="color:#000088">long</span> offset) {
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
<span style="color:#000088">boolean</span> result = <span style="color:#000088">false</span>;
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.getbit(key, offset);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">public</span> <span style="color:#000088">long</span> <span style="color:#009900">setRange</span>(String key, <span style="color:#000088">long</span> offset, String value) {
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
<span style="color:#000088">long</span> result = <span style="color:#006666">0</span>;
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.setrange(key, offset, value);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">public</span> String <span style="color:#009900">getRange</span>(String key, <span style="color:#000088">long</span> startOffset, <span style="color:#000088">long</span> endOffset) {
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
String result = <span style="color:#000088">null</span>;
<span style="color:#000088">if</span> (shardedJedis == <span style="color:#000088">null</span>) {
<span style="color:#000088">return</span> result;
}
<span style="color:#000088">boolean</span> broken = <span style="color:#000088">false</span>;
<span style="color:#000088">try</span> {
result = shardedJedis.getrange(key, startOffset, endOffset);
} <span style="color:#000088">catch</span> (Exception e) {
log.error(e.getMessage(), e);
broken = <span style="color:#000088">true</span>;
} <span style="color:#000088">finally</span> {
redisDataSource.returnResource(shardedJedis, broken);
}
<span style="color:#000088">return</span> result;
}
}</code></span>（3）好了，接下来在你的业务代码里加载RedisClientTemplate.class就可以了。
<span style="color:#000000"><code>
<span style="color:#9b859d">@RunWith</span>(SpringJUnit4ClassRunner.class)
<span style="color:#9b859d">@ContextConfiguration</span>(<span style="color:#009900">"classpath:spring-redis.xml"</span>)
<span style="color:#000088">public</span> <span style="color:#000088">class</span> <span style="color:#4f4f4f">RedisTest</span>{
<span style="color:#9b859d">@Autowired</span>
<span style="color:#000088">private</span> RedisClientTemplate redisClientTemplate ;
<span style="color:#9b859d">@Test</span>
<span style="color:#000088">public</span> <span style="color:#000088">void</span> <span style="color:#009900">testSave</span>(){
String key = <span style="color:#009900">"10086"</span>;
String val = <span style="color:#009900">"中国移动"</span>;
String r = redisClientTemplate .save(key,val);
System.out.println(r);
}
<span style="color:#9b859d">@Test</span>
<span style="color:#000088">public</span> <span style="color:#000088">void</span> <span style="color:#009900">testFind</span>(){
String key = <span style="color:#009900">"10086"</span>;
String result = redisClientTemplate .find(key);
System.out.println(result);
}
<span style="color:#9b859d">@Test</span> <span style="color:#000088">public</span> <span style="color:#000088">void</span> <span style="color:#009900">testDel</span>(){
String key = <span style="color:#009900">"10086"</span>;
<span style="color:#000088">long</span> l = redisClientTemplate .delete(key);
System.out.println(l);
}
}</code></span>补充：
1、shardedjedispool分片实现集群与jediscluster实现集群区别以及jediscluster实现集群可以查看 分布式缓存技术redis学习系列（七）——spring整合jediscluster
2、shardedjedispool分片集群与jediscluster集群同样不具有高可用特性，但基于shardedjedispool的ShardedJedisSentinelPool可以实现集群高可用，redis服务一台master挂机，sentinel哨兵进行主从切换之后，客户端程序自动完成同步的主从切换。
具体的实现方式就是通过sentinel的sentinelGetMasterAddrByName(masterName);(实际执行sentinel的get-master-addr-by-name命令)获取哨兵监控的所有master节点；然后用一个MasterListener启用一个线程，利用redis的订阅与发布机制，订阅+switch-master频道，时时获取redis服务端主从切换的信息。
实现原理和源码分析可以查看 基于Redis Sentinel的Redis集群(主从&Sharding)高可用方案 相关源码地址位于 sharded-jedis-sentinel-pool
