继上一篇的template编码方式使用redis
编码形式配置（一）
编码形式使用（二）
经过深入学习发现注解形式的更好用一些，省去一些繁琐的代码，使得你代码看起来更优雅
安装redis服务端请看编码形式配置（一）
1. pom.xml
添加jar包支持，使用springboot自带的redis启动器
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency>
2. Redis配置文件
这里新加入了缓存管理器，来管理redis.
Spring 3.1 引入了基于注释（annotation）的缓存（cache）技术，它不是一个具体的缓存实现方案（例如EHCache 或者 OSCache、Redis等），而是一个对缓存使用的抽象，通过在既有代码中添加少量它定义的各种 annotation，即能够达到缓存方法的返回对象的效果。
RedisConfig.java
import java.io.Serializable;import lombok.extern.slf4j.Slf4j;import org.springframework.beans.factory.annotation.Value;import org.springframework.cache.CacheManager;import org.springframework.cache.annotation.CachingConfigurerSupport;import org.springframework.cache.annotation.EnableCaching;import org.springframework.cache.interceptor.KeyGenerator;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.data.redis.cache.RedisCacheManager;import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;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.data.redis.core.ZSetOperations;import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer;import org.springframework.data.redis.serializer.StringRedisSerializer;import java.lang.reflect.Method;@Slf4j@Configuration@EnableCachingpublic class RedisConfig extends CachingConfigurerSupport{ @Configuration @Profile(value={"dev"}) static class LocalConfiguration { @Value("${redis.host}") private String host; @Value("${redis.port}") private Integer port; @Value("${redis.password}") private String password; /** * 缓存管理器. * @param redisTemplate * @return */ @Bean public CacheManager cacheManager(RedisTemplate<?,?> redisTemplate) { CacheManager cacheManager = new RedisCacheManager(redisTemplate); return cacheManager; } @Bean public RedisTemplate<Serializable, Serializable> redisTemplate( JedisConnectionFactory redisConnectionFactory) { log.info("------------------------------------------"); log.info("-----------------local redis--------------"); log.info("------------------------------------------"); RedisTemplate<Serializable, Serializable> redisTemplate = new RedisTemplate<Serializable, Serializable>(); redisTemplate.setKeySerializer(new StringRedisSerializer()); redisTemplate.setHashKeySerializer(new StringRedisSerializer()); redisTemplate .setValueSerializer(new JdkSerializationRedisSerializer()); redisTemplate .setHashValueSerializer(new JdkSerializationRedisSerializer()); redisTemplate.setConnectionFactory(redisConnectionFactory); return redisTemplate; } @Bean public JedisConnectionFactory redisConnectionFactory() { JedisConnectionFactory redisConnectionFactory = new JedisConnectionFactory(); redisConnectionFactory.setHostName(host); redisConnectionFactory.setPort(port); redisConnectionFactory.setPassword(password); return redisConnectionFactory; } } /** * 自定义key. * 此方法将会根据类名+方法名+所有参数的值生成唯一的一个key */ @Override public KeyGenerator keyGenerator() { log.info("RedisCacheConfig.keyGenerator()"); return new KeyGenerator() { @Override public Object generate(Object o, Method method, Object... objects) StringBuilder sb = new StringBuilder(); sb.append(o.getClass().getName()); sb.append(method.getName()); for (Object obj : objects) { sb.append(obj.toString()); } log.info("keyGenerator=" + sb.toString()); return sb.toString(); } }; }}
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@Profile(value={“dev”})代表开发环境用的配置
@Slf4j 是lombok中的注解，不用的可以删掉
3. 使用事例
import java.io.Serializable;import java.util.List;import javax.annotation.Resource;import lombok.extern.slf4j.Slf4j;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.data.redis.core.ValueOperations;import org.springframework.stereotype.Service;import org.springframework.transaction.annotation.Transactional;import com.github.pagehelper.PageHelper;@Slf4j@Transactional@Servicepublic class UserServiceImpl implements IUserService { @Autowired private IUserDao userDao; @Cacheable(value = "userInfo", key = "'findUser' + #id") @Override public UserDto findProperty(String id) { UserDto user = userDao.findUser(id); return user; } @Override @CacheEvict(value = "propertyInfo", key = "'findUser' + #id") public Ivoid cacheEvict(String id) { log.info("删除缓存" + id); }}
