Today, I only added this paragraph to find that the project can’t start

@Autowired
private RedisTemplate<String, Object> template;

Project error report

Description:

Field template in com.yy.service.impl.YuumiUserServiceImpl required a bean of type 'org.springframework.data.redis.core.RedisTemplate' that could not be found.

The injection point has the following annotations:
	- @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean of type 'org.springframework.data.redis.core.RedisTemplate' in your configuration.

Solution:
Add Class

package com.yy.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.stereotype.Component; 

@Component
public class Config {

    @Bean(name = "template")
    public RedisTemplate<String, Object> template(RedisConnectionFactory factory) {
        // create RedisTemplate<String, Object>
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        // Configuring the connection factory
        template.setConnectionFactory(factory);
        // Define the Jackson2JsonRedisSerializer serialization object
        Jackson2JsonRedisSerializer<Object> jacksonSeial = new Jackson2JsonRedisSerializer<>(Object.class);
        ObjectMapper om = new ObjectMapper();
        // Specify the fields to serialize, field, get and set, and the range of modifiers, ANY is both private and public
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        // Specify the type of serialized input, the class must be non-final modified, final modified class, such as String, Integer, etc. will report an exception
        om.activateDefaultTyping(

                LaissezFaireSubTypeValidator.instance ,
                ObjectMapper.DefaultTyping.NON_FINAL,

                JsonTypeInfo.As.WRAPPER_ARRAY);
        jacksonSeial.setObjectMapper(om);
        StringRedisSerializer stringSerial = new StringRedisSerializer();
        // redis key Serialization method using stringSerial
        template.setKeySerializer(stringSerial);
        // redis value serialization method using jackson
        template.setValueSerializer(jacksonSeial);
        // redis hash key serialized using stringSerial
        template.setHashKeySerializer(stringSerial);
        // redis hash value serialized using jackson
        template.setHashValueSerializer(jacksonSeial);
        template.afterPropertiesSet();
        return template;
    }
}

The project runs successfully