一、前期准备

1、一个构建好的springboot系统2、下载redis安装包，去redis官网下载3、启动redis服务，windows下双击bin目录下的redis-service.exe

二、环境构建

1、在项目的pom.xml中引入redis依赖

        <dependency>            <groupId>org.springframework.bootgroupId>            <artifactId>spring-boot-starter-data-redisartifactId>        dependency>

2、在项目配置文件application.yml中添加redis配置

spring:  #redis缓存  redis:    open: true  # 是否开启redis缓存  true开启   false关闭    database: 0    host: 127.0.0.1    port: 6379    password:    # 密码(默认为空)    timeout: 60000ms  # 连接超时时长(毫秒)    jedis:      pool:        max-active: 1000  # 连接池最大连接数(使用负值表示没有限制)        max-wait: -1ms      # 连接池最大阻塞等待时间(使用负值表示没有限制)        max-idle: 10      # 连接池中的最大空闲连接        min-idle: 5       # 连接池中的最小空闲连接

三、redis手动缓存

缓存配置

import com.fasterxml.jackson.annotation.JsonAutoDetect;import com.fasterxml.jackson.annotation.PropertyAccessor;import com.fasterxml.jackson.databind.DeserializationFeature;import com.fasterxml.jackson.databind.ObjectMapper;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;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.context.annotation.Primary;import org.springframework.data.redis.cache.RedisCacheConfiguration;import org.springframework.data.redis.cache.RedisCacheManager;import org.springframework.data.redis.connection.RedisConnectionFactory;import org.springframework.data.redis.core.*;import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;import org.springframework.data.redis.serializer.RedisSerializationContext;import org.springframework.data.redis.serializer.RedisSerializer;import org.springframework.data.redis.serializer.StringRedisSerializer;import java.lang.reflect.Method;import java.lang.reflect.Proxy;import java.time.Duration;/** * 缓存配置类 * @author 谢小鱼 * @Date 2019-11-20 11:00 **/@Configuration@EnableCachingpublic class RedisConfig extends CachingConfigurerSupport {        @Bean    public RedisTemplate<String, Object> redisTemplate() {        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();        redisTemplate.setKeySerializer(new StringRedisSerializer());        redisTemplate.setHashKeySerializer(new StringRedisSerializer());        redisTemplate.setHashValueSerializer(new StringRedisSerializer());        redisTemplate.setValueSerializer(new StringRedisSerializer());        redisTemplate.setConnectionFactory(factory);        return redisTemplate;    }    @Bean    public HashOperations<String, String, Object> hashOperations(RedisTemplate<String, Object> redisTemplate) {        return redisTemplate.opsForHash();    }    @Bean    public ValueOperations<String, String> valueOperations(RedisTemplate<String, String> redisTemplate) {        return redisTemplate.opsForValue();    }    @Bean    public ListOperations<String, Object> listOperations(RedisTemplate<String, Object> redisTemplate) {        return redisTemplate.opsForList();    }    @Bean    public SetOperations<String, Object> setOperations(RedisTemplate<String, Object> redisTemplate) {        return redisTemplate.opsForSet();    }    @Bean    public ZSetOperations<String, Object> zSetOperations(RedisTemplate<String, Object> redisTemplate) {        return redisTemplate.opsForZSet();    }}

四、redis注解缓存

import com.fasterxml.jackson.annotation.JsonAutoDetect;import com.fasterxml.jackson.annotation.PropertyAccessor;import com.fasterxml.jackson.databind.DeserializationFeature;import com.fasterxml.jackson.databind.ObjectMapper;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;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.context.annotation.Primary;import org.springframework.data.redis.cache.RedisCacheConfiguration;import org.springframework.data.redis.cache.RedisCacheManager;import org.springframework.data.redis.connection.RedisConnectionFactory;import org.springframework.data.redis.core.*;import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;import org.springframework.data.redis.serializer.RedisSerializationContext;import org.springframework.data.redis.serializer.RedisSerializer;import org.springframework.data.redis.serializer.StringRedisSerializer;import java.lang.reflect.Method;import java.lang.reflect.Proxy;import java.time.Duration;/** * 缓存配置类 * @author 谢小鱼 * @Date 2019-11-20 11:00 **/@Configuration@EnableCachingpublic class RedisConfig extends CachingConfigurerSupport {    private static final Logger logger = LoggerFactory.getLogger(RedisConfig.class);    @Autowired    private RedisConnectionFactory factory;    /**     * 默认两小时     */    private static final long DURATION_SECOND_7200 = 7200L;    private static final long DURATION_SECOND_300 = 300L;        @Override    @Bean    public KeyGenerator keyGenerator() {        return new KeyGenerator() {            @SuppressWarnings("rawtypes")            @Override            public Object generate(Object target, Method method, Object... params) {                StringBuilder sb = new StringBuilder(RedisAutoCacheValue.AUTO_KEY_PREFIX);                if(target instanceof Proxy) {                  //如果是代理类                  Class[] i = target.getClass().getInterfaces();                  if(i != null  && i.length > 0) {                    //取第一个即可                    sb.append(i[0].getName());                  }else {                    sb.append(target.getClass().getName());                  }                } else if(target instanceof org.springframework.cglib.proxy.Factory){                    //如果是cglib代理，需要手动去除 $$ 后面的                    String className = target.getClass().getName();                    sb.append(className, 0, className.indexOf("$$"));                } else {                  sb.append(target.getClass().getName());                }                sb.append(".");                sb.append(method.getName());                sb.append("_");                for (Object obj : params) {                    if (obj != null) {                        Class cls = obj.getClass();                        if (cls.isArray()) {                            //对于基础数据处理                            logger.info("keyGenerator : {}", cls.getComponentType());                            if (cls.isAssignableFrom(long.class)) {                                long[] ay = (long[]) obj;                                for (long o : ay) {                                    sb.append(o).append("");                                }                            } else if (cls.isAssignableFrom(int.class)) {                                int[] ay = (int[]) obj;                                for (int o : ay) {                                    sb.append(o).append("");                                }                            } else if (cls.isAssignableFrom(float.class)) {                                float[] ay = (float[]) obj;                                for (float o : ay) {                                    sb.append(o).append("");                                }                            } else if (cls.isAssignableFrom(double.class)) {                                double[] ay = (double[]) obj;                                for (double o : ay) {                                    sb.append(o).append("");                                }                            } else if (cls.isAssignableFrom(String.class)) {                                String[] ay = (String[]) obj;                                for (String o : ay) {                                    sb.append(o).append("");                                }                            } else {                                sb.append(obj.toString());                            }                            //TODO 对其他类型数组处理                        } else {                            sb.append(obj.toString());                        }                    } else {                        sb.append("null");                    }                    sb.append("_");                    //sb.append(obj == null ? "null" : obj.toString());                }                sb.delete(sb.length()-1, sb.length());                return sb.toString();            }        };    }    /**     * 默认的缓存管理，存放时效较长的缓存     * @param redisTemplate     * @return     */    @SuppressWarnings({"rawtypes", "Duplicates"})    @Primary    @Bean    public CacheManager cacheManager(RedisTemplate redisTemplate) {        RedisCacheConfiguration config = RedisCacheConfiguration                .defaultCacheConfig()                //过期时间                .entryTtl(Duration.ofSeconds(DURATION_SECOND_7200))                //不缓存null值                //.disableCachingNullValues()                //明确manager中的序列化与template一样，防止莫名其妙的问题                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(this.keySerializer()))                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(this.valueSerializer()));        RedisCacheManager rcm = RedisCacheManager.builder(redisTemplate.getConnectionFactory()).cacheDefaults(config).transactionAware().build();        return rcm;    }    /**     * 存放时效较短的缓存(5分钟)     * @param redisTemplate     * @return     */    @SuppressWarnings({"rawtypes", "Duplicates"})    @Bean    public CacheManager cacheManagerIn5Minutes(RedisTemplate redisTemplate) {        RedisCacheConfiguration config = RedisCacheConfiguration                .defaultCacheConfig()                //过期时间                .entryTtl(Duration.ofSeconds(DURATION_SECOND_300))                //不缓存null值                //.disableCachingNullValues()                //明确manager中的序列化与template一样，防止莫名其妙的问题                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(this.keySerializer()))                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(this.valueSerializer()));        RedisCacheManager rcm = RedisCacheManager.builder(redisTemplate.getConnectionFactory()).cacheDefaults(config).transactionAware().build();        return rcm;    }        private RedisSerializerkeySerializer() {        return new StringRedisSerializer();    }    private RedisSerializer valueSerializer() {        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);        ObjectMapper om = new ObjectMapper();        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);        //略过不匹配的属性        om.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);        jackson2JsonRedisSerializer.setObjectMapper(om);        return jackson2JsonRedisSerializer;    }}

自动缓存key：

/** * 自动缓存value集中在此 * @author Leon * @Date 2019-11-19 12:38 **/public class RedisAutoCacheValue {    /**     * 自动生成key前缀     */    public static final String AUTO_KEY_PREFIX = "AUTO:";}

推荐使用注解的方式操作redis，便于维护

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