Redis缓存 集成SSM框架
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Java SSM 框架集成 Redis框架
1.下载 Jedis依赖
<.!-- jedis依赖 --> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.7.1</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-redis</artifactId> <version>1.6.2.RELEASE</version> </dependency>
2.配置applicationContext.xml 配置文件 位置放在最前面
<!-- 连接池基本参数配置,类似数据库连接池 --> <context:property-placeholder location="classpath:redis.properties"/> <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxTotal" value="1024"/> <property name="maxIdle" value="200" /> <property name="testOnBorrow" value="true"/> </bean> <!-- 连接池配置,类似数据库连接池 --> <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" > <property name="hostName" value="127.0.0.1"></property> <property name="port" value="6379"></property> <!-- <property name="password" value="$redis.pass"></property> --> <property name="poolConfig" ref="poolConfig"></property> </bean> <bean id="redisCacheTransfer" class="com.jdt.wetalk.redisUtils.RedisCacheTransfer"> <property name="jedisConnectionFactory" ref="jedisConnectionFactory" /> </bean>
3.编辑Redis.properties 文件
host=127.0.0.1
port=6379
redis.pass=123456
maxIdle=200
maxActive=1024
redis.maxWait=10000
testOnBorrow=true
4.编写一些Redis的辅助类
1)。JedisClusterFactory.java
package com.jdt.wetalk.redisUtils; import java.util.HashSet; import java.util.Properties; import java.util.Set; import java.util.regex.Pattern; import org.apache.commons.pool2.impl.GenericObjectPoolConfig; import org.springframework.beans.factory.FactoryBean; import org.springframework.beans.factory.InitializingBean; import org.springframework.core.io.Resource; import redis.clients.jedis.HostAndPort; import redis.clients.jedis.JedisCluster; public class JedisClusterFactory implements FactoryBean<JedisCluster>, InitializingBean private Resource addressConfig; private String addressKeyPrefix; private JedisCluster jedisCluster; private Integer timeout; private Integer maxRedirections; private GenericObjectPoolConfig genericObjectPoolConfig; private Pattern p = Pattern.compile("^.+[:]\\d1,5\\s*$"); public JedisCluster getObject() throws Exception return jedisCluster; public Class<? extends JedisCluster> getObjectType() return (this.jedisCluster != null ? this.jedisCluster.getClass() : JedisCluster.class); public boolean isSingleton() return true; private Set<HostAndPort> parseHostAndPort() throws Exception try Properties prop = new Properties(); prop.load(this.addressConfig.getInputStream()); Set<HostAndPort> haps = new HashSet<HostAndPort>(); for (Object key : prop.keySet()) if (!((String) key).startsWith(addressKeyPrefix)) continue; String val = (String) prop.get(key); boolean isIpPort = p.matcher(val).matches(); if (!isIpPort) throw new IllegalArgumentException("ip 或 port 不合法"); String[] ipAndPort = val.split(":"); HostAndPort hap = new HostAndPort(ipAndPort[0], Integer.parseInt(ipAndPort[1])); haps.add(hap); return haps; catch (IllegalArgumentException ex) throw ex; catch (Exception ex) throw new Exception("解析 jedis 配置文件失败", ex); public void afterPropertiesSet() throws Exception Set<HostAndPort> haps = this.parseHostAndPort(); jedisCluster = new JedisCluster(haps, timeout, maxRedirections, genericObjectPoolConfig); public void setAddressConfig(Resource addressConfig) this.addressConfig = addressConfig; public void setTimeout(int timeout) this.timeout = timeout; public void setMaxRedirections(int maxRedirections) this.maxRedirections = maxRedirections; public void setAddressKeyPrefix(String addressKeyPrefix) this.addressKeyPrefix = addressKeyPrefix; public void setGenericObjectPoolConfig(GenericObjectPoolConfig genericObjectPoolConfig) this.genericObjectPoolConfig = genericObjectPoolConfig;
2)。RedisCache.java
ackage com.jdt.wetalk.redisUtils; import java.util.concurrent.locks.ReadWriteLock; import java.util.concurrent.locks.ReentrantReadWriteLock; import org.apache.ibatis.cache.Cache; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.data.redis.connection.jedis.JedisConnection; import org.springframework.data.redis.connection.jedis.JedisConnectionFactory; import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer; import org.springframework.data.redis.serializer.RedisSerializer; import redis.clients.jedis.exceptions.JedisConnectionException; public class RedisCache implements Cache private static final Logger logger = LoggerFactory.getLogger(RedisCache.class); private static JedisConnectionFactory jedisConnectionFactory; private final String id; private final ReadWriteLock rwl = new ReentrantReadWriteLock(); public RedisCache(final String id) if (id == null) throw new IllegalArgumentException("Cache instances require an ID"); logger.debug("MybatisRedisCache:id=" + id); this.id = id; /** * 清空所有缓存 */ public void clear() rwl.readLock().lock(); JedisConnection connection = null; try connection = jedisConnectionFactory.getConnection(); connection.flushDb(); connection.flushAll(); logger.debug("清除缓存......."); catch (JedisConnectionException e) e.printStackTrace(); finally if (connection != null) connection.close(); rwl.readLock().unlock(); public String getId() return this.id; /** * 获取缓存总数量 */ public int getSize() int result = 0; JedisConnection connection = null; try connection = jedisConnectionFactory.getConnection(); result = Integer.valueOf(connection.dbSize().toString()); logger.info("添加mybaits二级缓存数量:" + result); catch (JedisConnectionException e) e.printStackTrace(); finally if (connection != null) connection.close(); return result; public void putObject(Object key, Object value) rwl.writeLock().lock(); JedisConnection connection = null; try connection = jedisConnectionFactory.getConnection(); RedisSerializer<Object> serializer = new JdkSerializationRedisSerializer(); connection.set(SerializeUtil.serialize(key), SerializeUtil.serialize(value)); logger.info("添加mybaits二级缓存key=" + key + ",value=" + value); catch (JedisConnectionException e) e.printStackTrace(); finally if (connection != null) connection.close(); rwl.writeLock().unlock(); public Object getObject(Object key) // 先从缓存中去取数据,先加上读锁 rwl.readLock().lock(); Object result = null; JedisConnection connection = null; try connection = jedisConnectionFactory.getConnection(); RedisSerializer<Object> serializer = new JdkSerializationRedisSerializer(); result = serializer.deserialize(connection.get(serializer.serialize(key))); logger.info("命中mybaits二级缓存,value=" + result); catch (JedisConnectionException e) e.printStackTrace(); finally if (connection != null) connection.close(); rwl.readLock().unlock(); return result; public Object removeObject(Object key) rwl.writeLock().lock(); JedisConnection connection = null; Object result = null; try connection = jedisConnectionFactory.getConnection(); RedisSerializer<Object> serializer = new JdkSerializationRedisSerializer(); result = connection.expire(serializer.serialize(key), 0); catch (JedisConnectionException e) e.printStackTrace(); finally if (connection != null) connection.close(); rwl.writeLock().unlock(); return result; public static void setJedisConnectionFactory(JedisConnectionFactory jedisConnectionFactory) System.out.println("进入了Redis的获取========"); RedisCache.jedisConnectionFactory = jedisConnectionFactory; public ReadWriteLock getReadWriteLock() // TODO Auto-generated method stub return rwl;
3)RedisCacheTransfer.java
package com.jdt.wetalk.redisUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.redis.connection.jedis.JedisConnectionFactory; public class RedisCacheTransfer @Autowired public void setJedisConnectionFactory(JedisConnectionFactory jedisConnectionFactory) RedisCache.setJedisConnectionFactory(jedisConnectionFactory);
4)SerializeUtil.java
4)SerializeUtil.java package com.jdt.wetalk.redisUtils; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; public class SerializeUtil /** * 序列化 */ public static byte[] serialize(Object object) ObjectOutputStream oos = null; ByteArrayOutputStream baos = null; try // 序列化 baos = new ByteArrayOutputStream(); oos = new ObjectOutputStream(baos); oos.writeObject(object); byte[] bytes = baos.toByteArray(); return bytes; catch (Exception e) e.printStackTrace(); return null; /** * 反序列化 */ public static Object unserialize(byte[] bytes) if (bytes != null) ByteArrayInputStream bais = null; try // 反序列化 bais = new ByteArrayInputStream(bytes); ObjectInputStream ois = new ObjectInputStream(bais); return ois.readObject(); catch (Exception e) return null;
上面那个 applicationContext.xml 加载 Redis.properties失败 直接在 applicationContext.xml 定义了
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