所以就是接口和实现类的模式
public interface JedisClient {
String set(String key, String value);
String get(String key);
Boolean exists(String key);
Long expire(String key, int seconds);
Long ttl(String key);
Long incr(String key);
Long hset(String key, String field, String value);
String hget(String key, String field);
Long hdel(String key, String... field);
}
实现类
public class JedisClientCluster implements JedisClient {
@Autowired
private JedisCluster jedisCluster;
@Override
public String set(String key, String value) {
return jedisCluster.set(key, value);
}
@Override
public String get(String key) {
return jedisCluster.get(key);
}
@Override
public Boolean exists(String key) {
return jedisCluster.exists(key);
}
@Override
public Long expire(String key, int seconds) {
return jedisCluster.expire(key, seconds);
}
@Override
public Long ttl(String key) {
return jedisCluster.ttl(key);
}
@Override
public Long incr(String key) {
return jedisCluster.incr(key);
}
@Override
public Long hset(String key, String field, String value) {
return jedisCluster.hset(key, field, value);
}
@Override
public String hget(String key, String field) {
return jedisCluster.hget(key, field);
}
@Override
public Long hdel(String key, String... field) {
return jedisCluster.hdel(key, field);
}
}
另外一个单机实现类
public class JedisClientPool implements JedisClient {
@Autowired
private JedisPool jedisPool;
@Override
public String set(String key, String value) {
Jedis jedis = jedisPool.getResource();
String result = jedis.set(key, value);
jedis.close();
return result;
}
@Override
public String get(String key) {
Jedis jedis = jedisPool.getResource();
String result = jedis.get(key);
jedis.close();
return result;
}
@Override
public Boolean exists(String key) {
Jedis jedis = jedisPool.getResource();
Boolean result = jedis.exists(key);
jedis.close();
return result;
}
@Override
public Long expire(String key, int seconds) {
Jedis jedis = jedisPool.getResource();
Long result = jedis.expire(key, seconds);
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 incr(String key) {
Jedis jedis = jedisPool.getResource();
Long result = jedis.incr(key);
jedis.close();
return result;
}
@Override
public Long hset(String key, String field, String value) {
Jedis jedis = jedisPool.getResource();
Long result = jedis.hset(key, field, value);
jedis.close();
return result;
}
@Override
public String hget(String key, String field) {
Jedis jedis = jedisPool.getResource();
String result = jedis.hget(key, field);
jedis.close();
return result;
}
@Override
public Long hdel(String key, String... field) {
Jedis jedis = jedisPool.getResource();
Long result = jedis.hdel(key, field);
jedis.close();
return result;
}
}
这货实现了是实现了,但是我们是在maven工程中,那么这些该怎么理解呢!
@Autowired
private JedisPool jedisPool;
看下这个,单机版的有这货,有这货给意味着我们必须就是注入这个实例了
呗。所以及用药配置xml文件呗!
对了我理解下 @Autowired这个玩意,我好像忘了
在使用@Autowired时,首先在容器中查询对应类型的bean
如果查询结果刚好为一个,就将该bean装配给@Autowired指定的数据
如果查询的结果不止一个,那么@Autowired会根据名称来查找。
如果查询的结果为空,那么会抛出异常。解决方法时,使用required=false
所以我们尽量 id 和那个参数写的一致喽
<bean id="jedisPool" class="redis.clients.jedis.JedisPool">
<constructor-arg name="host" value="192.168.25.153"/>
<constructor-arg name="port" value="6379"/>
</bean>
<bean id="jedisClientPool" class="XXX.JedisClientPool"/>
最后一句这个是用来在IOC容器中注入这个玩意,为了以后的喽
集群版这样写
<bean id="jedisCluster" class="redis.clients.jedis.JedisCluster">
<constructor-arg>
<set>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="192.168.25.153"/>
<constructor-arg name="port" value="7001"/>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="192.168.25.153"/>
<constructor-arg name="port" value="7002"/>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="192.168.25.153"/>
<constructor-arg name="port" value="7003"/>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="192.168.25.153"/>
<constructor-arg name="port" value="7004"/>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="192.168.25.153"/>
<constructor-arg name="port" value="7005"/>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="192.168.25.153"/>
<constructor-arg name="port" value="7006"/>
</bean>
</set>
</constructor-arg>
</bean>
<bean id="jedisClientCluster" class="com.taotao.jedis.JedisClientCluster"/>