package springboot01cache.config;

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.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 springboot01cache.bean.Student;

import java.net.UnknownHostException;

import java.time.Duration;

@Configuration

public class MyRedisConfig

{

    //自定义RedisTemplate

    @Bean

    public RedisTemplate<Object, Student> student_redis_template(RedisConnectionFactory redisConnectionFactory)

    {

        RedisTemplate<Object, Student> template = new RedisTemplate<Object, Student>();

        template.setConnectionFactory(redisConnectionFactory);

        //使用JSON格式的序列化,保存

        Jackson2JsonRedisSerializer<Student> serializer = new Jackson2JsonRedisSerializer<Student>(Student.class);

        template.setDefaultSerializer(serializer);

        return template;

    }

    //自定义cacheManager缓存管理器

    @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)

        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()

                .entryTtl(Duration.ZERO)

                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))

                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))

                .disableCachingNullValues();

        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)

                .cacheDefaults(config)

                .build();

        return cacheManager;

    }

}