在SpringBoot中注入RedisTemplate，并且用@bean重写序列化，发现在Controller中拿到的不是序列化后的RedisTemplate

代码如下

RedisTest.java

package com.amber.Demo;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/redis")
public class RedisTest {
    //用这种方法注入，发现和RedisConfig中不是同一个对象
    @Autowired
    RedisTemplate redisTemplate;
//用这种方法注入发现和RedisConfig中是同一个对象
//    @Autowired
//    private RedisTemplate<String, Object> redisTemplate;

    @GetMapping("/test")
    public void test() {
        //字符串相关操作
        redisTemplate.opsForValue().set("hahhahahah", "kljlkj");
        System.out.println(redisTemplate);
        System.out.println(redisTemplate.getStringSerializer());
        System.out.println(redisTemplate.getValueSerializer());
    }
}

RedisConfig.java

package com.amber.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;


@Configuration
public class RedisConfig {

    @Bean
    public RedisTemplate setRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate redisTemplate = new RedisTemplate();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        // 设置value的序列化规则和 key的序列化规则
        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.afterPropertiesSet();
        System.out.println(redisTemplate);
        return redisTemplate;
    }
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>groupId</groupId>
    <artifactId>Rocketmq</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
            <!--<version>2.0.5.RELEASE</version>-->
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

打印两边的redisTrmplate的地址发现，地址不一样

org.springframework.data.redis.core.RedisTemplate@436715af
Sep 28, 2018 5:28:30 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'dispatcherServlet'
Sep 28, 2018 5:28:30 PM io.lettuce.core.EpollProvider <clinit>
INFO: Starting without optional epoll library
Sep 28, 2018 5:28:30 PM io.lettuce.core.KqueueProvider <clinit>
INFO: Starting without optional kqueue library
org.springframework.data.redis.core.RedisTemplate@79040b02

但是如果我把RedisTest中的注入换成

@Autowired
    private RedisTemplate<String, Object> redisTemplate;

那么在RedisTest和RedisConfig两边打印的地址是同一个地址，我不大明白。希望有人能顾帮助我，十分感谢

org.springframework.data.redis.core.RedisTemplate@3ef7d218
Sep 28, 2018 5:25:01 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'dispatcherServlet'
Sep 28, 2018 5:25:01 PM io.lettuce.core.EpollProvider <clinit>
INFO: Starting without optional epoll library
Sep 28, 2018 5:25:01 PM io.lettuce.core.KqueueProvider <clinit>
INFO: Starting without optional kqueue library
org.springframework.data.redis.core.RedisTemplate@3ef7d218