org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to localhost/:6379
sprngboot整合redis很简单，之前使用也没有什么问题，基本操作通过redistemplate实现的，配置一下序列化方式就行，一般使用阿里的fastjson。当然也可以使用比较火的fastjson2。
至于yml的配置比较简单，不多赘述
序列化：
@Bean
public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory){
RedisTemplate redisTemplate = new RedisTemplate<>();
redisTemplate.setConnectionFactory(redisConnectionFactory);
FastJsonRedisSerializer
1.其他设置正常的情况下，redis一直连接失败，之前没有设置LettuceConnectionFactory ，springboot项目正常启动，现在一直报错，连接的地址是locahost。而在yml配置的redis的地址为虚拟机地址。正常情况下不应该报错
2.配置redis的LettuceConnectionFactory 要设置连接地址和端口号
3.
@Bean
public LettuceConnectionFactory lettuceConnectionFactory(){
// new RedisStandaloneConfiguration("192.168.1.6",6379)
RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
redisStandaloneConfiguration.setHostName("192.168.1.6");
redisStandaloneConfiguration.setPort(6379);
redisStandaloneConfiguration.setDatabase(5);
return new LettuceConnectionFactory( redisStandaloneConfiguration);
}
4.整合springcache的时候用到了LettuceConnectionFactory
@Bean
public CacheManager cacheManager(LettuceConnectionFactory factory){
// 以锁写入的方式创建对象
RedisCacheWriter writer = RedisCacheWriter.lockingRedisCacheWriter(factory);
RedisCacheConfiguration configuration = RedisCacheConfiguration.defaultCacheConfig();
return new RedisCacheManager(writer, configuration);
}
5.spring boot data redis 官方文档关于LettuceConnectionFactory配置如下：
The following example shows how to create a new Lettuce connection factory:@Configuration
class AppConfig {
@Bean
public LettuceConnectionFactory redisConnectionFactory() {
return new LettuceConnectionFactory(new RedisStandaloneConfiguration("server", 6379));
}
}
