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pom.xml:

    <!-- 添加redis支持 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-redis</artifactId>
    </dependency>
    <dependency>
        <groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
        <version>2.6.2</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-redis</artifactId>
        <version>1.5.0.RELEASE</version>
    </dependency>

RedisCacheConfig.java:

   
   @Bean(name="jedisConnectionFactory")
    JedisConnectionFactory jedisConnectionFactory() {
        JedisConnectionFactory factory = new JedisConnectionFactory();
        return factory;
    }

    @Bean
    RedisTemplate<String, Object> redisTemplate() {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<String, Object>();
        redisTemplate.setConnectionFactory(jedisConnectionFactory());
        return redisTemplate;
    }
    

工具類(lèi)：

@SuppressWarnings("unchecked")
@Component
public class RedisUtil {
    @SuppressWarnings("rawtypes")
    
    @Autowired
    private RedisTemplate redisTemplate;
    
    public void test() {
         redisTemplate.opsForValue().set("q", 123);//這里的redisTemplate=null 不知為何？                          
    }
}

調(diào)用test()方法 報(bào)java.lang.NullPointerException 求指點(diǎn)明燈