spring + redis 实现数据的缓存
import java.io.Serializable;import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.data.redis.core.BoundSetOperations;
import org.springframework.data.redis.core.HashOperations;
import org.springframework.data.redis.core.ListOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.SetOperations;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Service;
@Service
public class RedisCacheUtil
{
@Autowired @Qualifier("jedisTemplate")
public RedisTemplate redisTemplate;
/**
* 缓存基本的对象，Integer、String、实体类等
* @param key 缓存的键值
* @param value 缓存的值
* @return 缓存的对象
*/
publicValueOperations setCacheObject(String key,T value)
{
ValueOperations operation = redisTemplate.opsForValue();
operation.set(key,value);
return operation;
}
/**
* 获得缓存的基本对象。
* @param key 缓存键值
* @param operation
* @return 缓存键值对应的数据
*/
publicT getCacheObject(String key/*,ValueOperations operation*/)
{
ValueOperations operation = redisTemplate.opsForValue();
return operation.get(key);
}
/**
* 缓存List数据
* @param key 缓存的键值
* @param dataList 待缓存的List数据
* @return 缓存的对象
*/
publicListOperations setCacheList(String key,List dataList)
{
ListOperations listOperation = redisTemplate.opsForList();
if(null != dataList)
{
int size = dataList.size();
for(int i = 0; i < size ; i ++)
{
listOperation.rightPush(key,dataList.get(i));
}
}
return listOperation;
}
/**
* 获得缓存的list对象
* @param key 缓存的键值
* @return 缓存键值对应的数据
*/
publicList getCacheList(String key)
{
List dataList = new ArrayList();
ListOperations listOperation = redisTemplate.opsForList();
Long size = listOperation.size(key);
for(int i = 0 ; i < size ; i ++)
{
dataList.add((T) listOperation.leftPop(key));
}
return dataList;
}
/**
* 缓存Set
* @param key 缓存键值
* @param dataSet 缓存的数据
* @return 缓存数据的对象
*/
publicBoundSetOperations setCacheSet(String key,Set dataSet)
{
BoundSetOperations setOperation = redisTemplate.boundSetOps(key);
/*T[] t = (T[]) dataSet.toArray();
setOperation.add(t);*/
Iterator it = dataSet.iterator();
while(it.hasNext())
{
setOperation.add(it.next());
}
return setOperation;
}
/**
* 获得缓存的set
* @param key
* @param operation
* @return
*/
public Set getCacheSet(String key/*,BoundSetOperations operation*/)
{
Set dataSet = new HashSet();
BoundSetOperations operation = redisTemplate.boundSetOps(key);
Long size = operation.size();
for(int i = 0 ; i < size ; i++)
{
dataSet.add(operation.pop());
}
return dataSet;
}
/**
* 缓存Map
* @param key
* @param dataMap
* @return
*/
publicHashOperations setCacheMap(String key,Map dataMap)
{
HashOperations hashOperations = redisTemplate.opsForHash();
if(null != dataMap)
{
for (Map.Entry entry : dataMap.entrySet()) {
/*System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());*/
hashOperations.put(key,entry.getKey(),entry.getValue());
}
}
return hashOperations;
}
/**
* 获得缓存的Map
* @param key
* @param hashOperation
* @return
*/
publicMap getCacheMap(String key/*,HashOperations hashOperation*/)
{
Map map = redisTemplate.opsForHash().entries(key);
/*Map map = hashOperation.entries(key);*/
return map;
}
/**
* 缓存Map
* @param key
* @param dataMap
* @return
*/
publicHashOperations setCacheIntegerMap(String key,Map dataMap)
{
HashOperations hashOperations = redisTemplate.opsForHash();
if(null != dataMap)
{
for (Map.Entry entry : dataMap.entrySet()) {
/*System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());*/
hashOperations.put(key,entry.getKey(),entry.getValue());
}
}
return hashOperations;
}
/**
* 获得缓存的Map
* @param key
* @param hashOperation
* @return
*/
publicMap getCacheIntegerMap(String key/*,HashOperations hashOperation*/)
{
Map map = redisTemplate.opsForHash().entries(key);
/*Map map = hashOperation.entries(key);*/
return map;
}
}
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