时间:2022-12-06 01:19
ssm框架使用redis的示例:
1.导入Redis相关jar包,代码:
<!--redis相关--><dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.6.2.RELEASE</version>
</dependency>
2.在redis.properties文件中写入Redis基本配置属性,代码:
#服务器ipredis.hostname=127.0.0.1
#redis数据库端口
redis.port=6379
#使用的数据库(共有16个数据库0~15)
redis.database=2
#控制一个pool可分配多少个jedis示例
redis.pool.maxActive=50
#控制一个pool最多有多少个状态为idle的jedis实例
redis.pool.maxIdle=300
#最大等待连接时间(单位毫秒)
redis.pool.maxTotal=600
#redis密码(一般不设置密码,设了重启服务也会没有)
redis.pass=
3.在applicationContext.xml中添加相关bean,代码:
<!--载入配置文件--><context:property-placeholderlocation="classpath:redis.properties"ignore-unresolvable="true"/>
<!--配置JedisPoolConfig示例-->
<beanid="poolConfig"class="redis.clients.jedis.JedisPoolConfig">
<propertyname="maxIdle"value="${redis.pool.maxIdle}"/>
<propertyname="maxTotal"value="${redis.pool.maxTotal}"/>
</bean>
<!--配置JedisConnectionFactory-->
<beanid="jedisConnectionFactory"class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<propertyname="hostName"value="${redis.hostname}"/>
<propertyname="port"value="${redis.port}"/>
<propertyname="password"value="${redis.pass}"/>
<propertyname="database"value="${redis.database}"/>
<propertyname="poolConfig"ref="poolConfig"/>
<propertyname="usePool"value="true"/>
</bean>
<!--配置RedisTemplate-->
<beanid="redisTemplate"class="org.springframework.data.redis.core.RedisTemplate">
<propertyname="connectionFactory"ref="jedisConnectionFactory"/>
<propertyname="defaultSerializer">
<beanclass="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer"/>
</property>
<propertyname="keySerializer">
<beanclass="org.springframework.data.redis.serializer.StringRedisSerializer"/>
</property>
<propertyname="valueSerializer">
<beanclass="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer"/>
</property>
<propertyname="hashKeySerializer">
<beanclass="org.springframework.data.redis.serializer.StringRedisSerializer"/>
</property>
<propertyname="hashValueSerializer">
<beanclass="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer"/>
</property>
</bean>
4.自动注入RedisTemplate并使用,代码:
@AutowiredprivateRedisTemplateredisTemplate;
@Override
publicAccountgetAccountById(Integerid){
if(redisTemplate.opsForHash().hasKey("Account",id.toString())){
//redis缓存中包含数据,则从redis中获取
System.out.println("从redis中获取");
return(Account)redisTemplate.opsForHash().get("Account",id.toString());
}else{
//redis缓存中不含该数据,则从mysql中获取
System.out.println("从mysql中获取");
returnaccountDao.getAccountById(id);
}
}