pom.xml添加相关依赖
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.1.RELEASE</version>
</parent>
<!-- 依赖 -->
<dependencies>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.2.0</version>
</dependency>
<!-- redis相关 -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
</dependency>
<dependencies>
2 . 配置Redis集群，参考 spring-data-redis官方文档
@Component @ConfigurationProperties(prefix = "spring.redis.cluster") public class ClusterConfigurationProperties { /* * spring.redis.cluster.nodes[0] = 127.0.0.1:7379 * spring.redis.cluster.nodes[1] = 127.0.0.1:7380 * ... */ List<String> nodes; /** * Get initial collection of known cluster nodes in format {@code host:port}. * * @return */ public List<String> getNodes() { return nodes; } public void setNodes(List<String> nodes) { this.nodes = nodes; } } @Configuration public class AppConfig { /** * Type safe representation of application.properties */ @Autowired ClusterConfigurationProperties clusterProperties; public @Bean RedisConnectionFactory connectionFactory() { return new JedisConnectionFactory( new RedisClusterConfiguration(clusterProperties.getNodes())); } }3 . 自定义二级缓存类
public class RedisCache implements Cache { private static final String PREFIX = "SYS_CONFIG:"; private final ReadWriteLock readWriteLock = new ReentrantReadWriteLock(true); private String id; private JdkSerializationRedisSerializer jdkSerializer = new JdkSerializationRedisSerializer(); private static RedisConnectionFactory redisConnectionFactory; public RedisCache(final String id) { if (id == null) { throw new IllegalArgumentException("Cache instances require an ID"); } this.id = id; } @Override public String getId() { return this.id; } @Override public void putObject(Object key, Object value) { RedisClusterConnection conn = redisConnectionFactory .getClusterConnection(); if (key == null) return; String strKey = PREFIX + key.toString(); conn.set(strKey.getBytes(), jdkSerializer.serialize(value)); conn.close(); } @Override public Object getObject(Object key) { if (key != null) { String strKey = PREFIX + key.toString(); RedisClusterConnection conn = redisConnectionFactory .getClusterConnection(); byte[] bs = conn.get(strKey.getBytes()); conn.close(); return jdkSerializer.deserialize(bs); } return null; } @Override public Object removeObject(Object key) { if (key != null) { RedisClusterConnection conn = redisConnectionFactory .getClusterConnection(); conn.del(key.toString().getBytes()); conn.close(); } return null; } @Override public void clear() { } @Override public int getSize() { // TODO Auto-generated method stub return 0; } @Override public ReadWriteLock getReadWriteLock() { return this.readWriteLock; } public static void setRedisConnectionFactory(RedisConnectionFactory redisConnectionFactory) { RedisCache.redisConnectionFactory = redisConnectionFactory; } }使用一个Transfer类间接注入RedisConnectionFactory
@Component
public class RedisCacheTransfer {
@Autowired public void setJedisConnectionFactory( RedisConnectionFactory jedisConnectionFactory) { RedisCache.setRedisConnectionFactory(jedisConnectionFactory); }}
4 . 在application.propreties中开启二级缓存
开启mybatis的二级缓存 spring.datasource.cachePrepStmts=true5 . 基于注解的使用
@CacheNamespace(implementation = RedisCache.class) public interface ConfigDaoMapper { ..... }