springboot-redis泛型支持

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网上找了一些springboot操作Redis的文章,
这篇文章关于序列化有大概的讲解:https://blog.csdn.net/neosmith/article/details/46800235
redisTemplate 的基本使用:https://blog.csdn.net/ruby_one/article/details/79141940
GenericJackson2JsonRedisSerializer :https://blog.csdn.net/asdfsadfasdfsa/article/details/79962056 (这个没有测试成功!)
看到的文章中对于json方式序列化的使用基本是2中方式:
方式1.每种类型写一个Bean,比如:

@Bean
public RedisTemplate<String,Person> redisTemplate(RedisConnectionFactory factory){
...
}
@Bean
public RedisTemplate<String,School> redisTemplate(RedisConnectionFactory factory){
...
}

方式2.

@Bean
public RedisTemplate<String,Object> redisTemplate(RedisConnectionFactory factory){
...
}
或者
@Bean
public RedisTemplate<Object,Object> redisTemplate(RedisConnectionFactory factory){
...
}

每个get***方法得到的结果需要自己做一次强制类型转换,将Object转换为我们需要的类型.

以下这种写法实现了泛型的方式,解决了上述2个问题:

application.properties中增加redis的配置信息

spring.redis.host=10.9.36.120
spring.redis.password=****
spring.redis.port=6379
spring.redis.database=1

redis配置类

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
    /*//缓存管理器
    @Bean
    public CacheManager cacheManager(@SuppressWarnings("rawtypes") RedisTemplate redisTemplate) {
        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
        //设置缓存过期时间
        cacheManager.setDefaultExpiration(10000);
        return cacheManager;
    }*/

    @Bean
    @ConditionalOnMissingBean(StringRedisTemplate.class)
    public StringRedisTemplate stringRedisTemplate(
            RedisConnectionFactory redisConnectionFactory)
            throws UnknownHostException {
        StringRedisTemplate template = new StringRedisTemplate();
        template.setConnectionFactory(redisConnectionFactory);
        return template;
    }
//因为我的场景中Key都是普通的String,所以这里写死了String
    @Bean
    public <String,V>RedisTemplate<String, V> redisTemplate(RedisConnectionFactory factory){
        RedisTemplate<String, V> template = new RedisTemplate<>();
        template.setConnectionFactory(factory);
        setSerializer(template);
        template.afterPropertiesSet();
        return template;
    }
    private void setSerializer(RedisTemplate template){
        //key的序列化器为string
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();

        //value的序列化为json格式,使用Jackson2JsonRedisSerializer
        @SuppressWarnings({ "rawtypes", "unchecked" })
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);

        template.setDefaultSerializer(jackson2JsonRedisSerializer);//先 全部为json序列化
        template.setKeySerializer(stringRedisSerializer);//key为String序列化
        template.setHashKeySerializer(stringRedisSerializer);//hashKey为String序列化
    }
}

测试:

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest( classes = MainApplication.class)
public class TestRedis {

    @Resource
    RedisTemplate<String,Student> redisTemplateStudent;
    @Resource
    RedisTemplate<String,Person> redisTemplatePerson;
    @Test
    public void TestReidsStudent(){
        ValueOperations<String, Student> valueOperations = redisTemplateStudent.opsForValue();
        Student student = new Student();
        student.setId(1L);
        student.setName("zhansan");
        student.setAge(12);
        valueOperations.set(student.getName(),student);

        Student result = valueOperations.get(student.getName());
        System.out.println(result);

    }
    @Test
    public void TestReidsPerson(){
        ValueOperations<String, Person> valueOperations = redisTemplatePerson.opsForValue();
        Person person = new Person();
        person.setName("zhansan");
        person.setAge(12);
        valueOperations.set(person.getName(),person);

        Person result = valueOperations.get(person.getName());
        System.out.println(result);

    }
}

查看结果:

image.png