【3】Springboot整合Redis

1、在pom.xml中导入坐标

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

        <!--common-pool2-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
        </dependency>

2、测试是否整合成功(控制台打印出数据)

    @Autowired
    private RedisTemplate<Object,Object> redisTemplate;

    @Test
    void testRedis(){
        System.out.println("redisTemplate = " + redisTemplate);
        redisTemplate.opsForValue().set("name","zs",Duration.ofSeconds(30));
        System.out.println("redisTemplate.opsForValue().get(\"name\") = " + redisTemplate.opsForValue().get("name"));
    }

3、为了解决Redis提供的默认序列化方式会出现乱码问题，需要创建RedisConfig配置类重写序列化方式

 @Bean
    public RedisTemplate<String,Object> redisTemplate(RedisConnectionFactory factory){
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(factory);

        //默认的是JDK序列化，导致key和value都不是很直观
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new StringRedisSerializer());
        return redisTemplate;

    }

4、再次测试一下，会报错

org.springframework.beans.factory.UnsatisfiedDependencyException: 
Error creating bean with name 'com.hubu.redisdemo.RedisDemoApplicationTests': 
Unsatisfied dependency expressed through field 'redisTemplate'; 
nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: 
No qualifying bean of type 'org.springframework.data.redis.core.RedisTemplate<java.lang.Object, java.lang.Object>' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

只需要将RedisTemplate<Object,Object>换成RedisTemplate<String,Object>即可