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文章目录

• RedisConfig
• • 一、配置类
  • 二、常量配置类
• over

RedisConfig

一、配置类

不废话，上代码，主要是解决序列化之类的问题

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
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.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
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.time.Duration;

/**
 * @author 李家民
 */
@Configuration
@EnableCaching
public class RedisConfig {

    @Bean
    public KeyGenerator wiselyKeyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... params) {
                StringBuilder sb = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append(method.getName());
                for (Object obj : params) {
                    sb.append(obj.toString());
                }
                return sb.toString();
            }
        };
    }

    @Bean
    public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);

        // 序列号key value
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);

        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);

        // 解决查询缓存转换异常的问题
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);

        // 配置序列化（解决乱码的问题）,过期时间600秒
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofSeconds(600))
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                .disableCachingNullValues();

        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                .cacheDefaults(config)
                .build();
        return cacheManager;
    }
}

二、常量配置类

public class RedisConst {

    public static final String SKUKEY_PREFIX = "sku:";
    public static final String SKUKEY_SUFFIX = ":info";
    //单位：秒
    public static final long SKUKEY_TIMEOUT = 24 * 60 * 60;
    //单位：秒 尝试获取锁的最大等待时间
    public static final long SKULOCK_EXPIRE_PX1 = 1;
    //单位：秒 锁的持有时间
    public static final long SKULOCK_EXPIRE_PX2 = 1;
    public static final String SKULOCK_SUFFIX = ":lock";
    public static final long SKUKEY_TEMPORARY_TIMEOUT=60*60;

    public static final String USER_KEY_PREFIX = "user:";
    public static final String USER_CART_KEY_SUFFIX = ":cart";
    public static final long USER_CART_EXPIRE = 60 * 60 * 24 * 7;

    //用户登录
    public static final String USER_LOGIN_KEY_PREFIX = "user:login:";
    //    public static final String userinfoKey_suffix = ":info";
    public static final int USERKEY_TIMEOUT = 60 * 60 * 24 * 7;

    //秒杀商品前缀
    public static final String SECKILL_GOODS = "seckill:goods";
    public static final String SECKILL_ORDERS = "seckill:orders";
    public static final String SECKILL_ORDERS_USERS = "seckill:orders:users";
    public static final String SECKILL_STOCK_PREFIX = "seckill:stock:";
    public static final String SECKILL_USER = "seckill:user:";
    //用户锁定时间 单位：秒
    public static final int SECKILL__TIMEOUT = 60 * 60 * 1;

}

over

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