SpringBoot 2.x 整合redis

看了好多篇文章，再根据自己的理解进行的配置。

一、Mevan相关配置

1.我的SpringBoot版本

    org.springframework.boot
    spring-boot-starter-parent
    2.1.7.RELEASE
     

2.引入spring-redis的依赖

    org.springframework.boot
    spring-boot-starter-data-redis

二、application.yml中加入redis依赖

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/spring_cache?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: 123456
  redis:
    host: 39.107.250.174
    port: 6379
    database: 0
    timeout: 1000s  # 数据库连接超时时间，2.0 中该参数的类型为Duration，这里在配置的时候需要指明单位
    # 连接池配置，2.0中直接使用jedis或者lettuce配置连接池
    jedis:
      pool:
        # 最大空闲连接数
        max-idle: 500
        # 最小空闲连接数
        min-idle: 50
        # 等待可用连接的最大时间，负数为不限制
        max-wait: -1
        # 最大活跃连接数，负数为不限制
        max-active: -1
  cache:
    redis:
      time-to-live: -1 #毫秒
      
#以下可忽略
mybatis:
  configuration:
    #开启驼峰命名
    map-underscore-to-camel-case: true
logging:
  level:
    com.scitc.cache.mapper : debug

三、配置编写redis配置类

package com.scitc.cache.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
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.time.Duration;

@Slf4j
@Configuration
@EnableCaching//启用缓存，这个注解很重要；
//继承CachingConfigurerSupport，为了自定义生成KEY的策略。可以不继承。
public class RedisConfig extends CachingConfigurerSupport {
    @Value("${spring.cache.redis.time-to-live}")
    private Duration timeToLive = Duration.ZERO;
    
    @Bean(name = "redisTemplate")
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate template = new RedisTemplate<>();
        template.setConnectionFactory(redisConnectionFactory);
        //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值
        Jackson2JsonRedisSerializer