redis学习笔记（十七）redis+springboot API使用

一、API介绍

API是使用spring data redis
可以选择拿同步连接和异步连接
可以选择优先从从库里读数据
redisTemplate是高级API
jedisConnection是低级API
高级API依赖于低级API

二、maven

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-json</artifactId>
</dependency>

三、使用 1.使用低级API：

RedisConnection connection = redisTemplate.getConnectionFactory().getConnection();
connection.set("hello".getBytes(), "yangzhciheng".getBytes());

2.json序列化

Jackson2HashMapper jackson2HashMapper = new Jackson2HashMapper(objectMapper, false);
redisTemplate.opsForHash().putAll("sean", jackson2HashMapper.toHash(new Object()));
Map sean = redisTemplate.opsForHash().entries("sean");
Object o = objectMapper.convertValue(sean, Object.class);

3.自定义template

@Bean
public StringRedisTemplate myTemplate(RedisConnectionFactory redisConnectionFactory) {
    StringRedisTemplate stringRedisTemplate = new StringRedisTemplate(redisConnectionFactory);
    stringRedisTemplate.setHashValueSerializer(new Jackson2JsonRedisSerializer<Object>(Object.class));
    return stringRedisTemplate;
}

4.pub/sub的API使用

stringRedisTemplate.convertAndSend("ooxx", "hello");
RedisConnection connection = stringRedisTemplate.getConnectionFactory().getConnection();
connection.subscribe(new MessageListener() {
    @Override
    public void onMessage(Message message, byte[] pattern) {
        System.out.println(message);
        // TODO
    }
}, "ooxx".getBytes());

如果有写错的地方，欢迎大家指正，感谢！