spring框架怎么使用redis

"spring框架使用redis的方法：

1.在pom.xml中导入redis的相关依赖，例如：

<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.1.0</version>
</dependency>

2.在applicationContext.xml中添加redis相关配置，例如：

<!--redis配置开始-->
<beanid=""jedisPoolConfig""class=""redis.clients.jedis.JedisPoolConfig"">
<propertyname=""maxActive""value=""300""/>
<propertyname=""maxIdle""value=""100""/>
<propertyname=""maxWait""value=""1000""/>
<propertyname=""testOnBorrow""value=""true""/>
</bean>
<!--ConfigpoolConfig,Stringhost,intport,inttimeout,Stringpassword,intdatabase-->
<beanid=""jedisPool""class=""redis.clients.jedis.JedisPool""destroy-method=""destroy"">
<constructor-argref=""jedisPoolConfig""/>
<constructor-argvalue=""127.0.0.1""/>
<constructor-argvalue=""6379""/>
<constructor-argvalue=""3000""/>
<constructor-argvalue=""123456""/>
<constructor-argvalue=""0""/>
</bean>
<beanid=""redisAPI""class=""com.xc.util.RedisAPI"">
<propertyname=""jedisPool""ref=""jedisPool""/>
</bean>

3.最后创建redis的工具类即可。代码如下：

publicclassRedisAPI{
publicstaticJedisPooljedisPool;
publicJedisPoolgetJedisPool(){
returnjedisPool;
}
publicvoidsetJedisPool(JedisPooljedisPool){
RedisAPI.jedisPool=jedisPool;
}
/**
*setkeyandvaluetoredis
*@paramkey
*@paramvalue
*@return
*/
publicstaticbooleanset(Stringkey,Stringvalue){
try{
Jedisjedis=jedisPool.getResource();
jedis.set(key,value);
returntrue;
}catch(Exceptione){
e.printStackTrace();
}
returnfalse;
}
/**
*setkeyandvaluetoredis
*@paramkey
*@paramseconds有效期
*@paramvalue
*@return
*/
publicstaticbooleanset(Stringkey,intseconds,Stringvalue){
try{
Jedisjedis=jedisPool.getResource();
jedis.setex(key,seconds,value);
returntrue;
}catch(Exceptione){
e.printStackTrace();
}
returnfalse;
}
/**
*判断某个key是否存在
*@paramkey
*@return
*/
publicbooleanexist(Stringkey){
try{
Jedisjedis=jedisPool.getResource();
returnjedis.exists(key);
}catch(Exceptione){
e.printStackTrace();
}
returnfalse;
}
/**
*返还到连接池
*@parampool
*@paramredis
*/
publicstaticvoidreturnResource(JedisPoolpool,Jedisredis){
if(redis!=null){
pool.returnResource(redis);
}
}
/**
*获取数据
*@paramkey
*@return
*/
publicStringget(Stringkey){
Stringvalue=null;
Jedisjedis=null;
try{
jedis=jedisPool.getResource();
value=jedis.get(key);
}catch(Exceptione){
e.printStackTrace();
}finally{
//返还到连接池
returnResource(jedisPool,jedis);
}
returnvalue;
}
/**
*查询key的有效期,当key不存在时，返回-2。当key存在但没有设置剩余生存时间时，返回-1。否则，以秒为单位，返回key的剩余生存时间。
*注意：在Redis2.8以前，当key不存在，或者key没有设置剩余生存时间时，命令都返回-1。
*@paramkey
*@return剩余多少秒
*/
publicLongttl(Stringkey){
try{
Jedisjedis=jedisPool.getResource();
returnjedis.ttl(key);
}catch(Exceptione){
e.printStackTrace();
}
return(long)-2;
}
/**
*删除
*@paramkey
*/
publicvoiddelete(Stringkey){
try{
Jedisjedis=jedisPool.getResource();
jedis.del(key);
}catch(Exceptione){
e.printStackTrace();
}
}
}