一、Maven依赖

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.1.RELEASE</version>
</parent>
<dependencies>
    <!-- 集成commons工具类 -->
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
    </dependency>
    <!-- 集成lombok 框架 -->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
    </dependency>
    <!-- fastjson -->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.30</version>
    </dependency>
    <!-- SpringBoot-整合Web组件 -->
    <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>
    </dependency>
</dependencies>
<!-- 管理依赖 -->
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Finchley.M7</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

二、工具类

package com.demo.utils;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.util.concurrent.TimeUnit;

/**
 * @Author: JYC
 * @Title: RedisTemplateUtils
 * @Description: TODO
 * @Date: 2022/4/28 10:45
 */
@Component
public class RedisTemplateUtils {

    @Resource
    private RedisTemplate<String, Object> redisTemplate;

    public void setObject(String key, Object object) {
        setObject(key, object, null);
    }

    public void setObject(String key, Object object, Long timeOut) {
        redisTemplate.opsForValue().set(key, object);
        if (timeOut != null) {
            redisTemplate.expire(key, timeOut, TimeUnit.SECONDS);
        }
    }

    public Object getObject(String key) {
        return redisTemplate.opsForValue().get(key);
    }
}

三、控制层

package com.demo.controller;

import com.alibaba.fastjson.JSONObject;
import com.demo.entity.UserEntity;
import com.demo.utils.RedisTemplateUtils;
import com.demo.utils.RedisUtils;
import org.apache.catalina.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Author: JYC
 * @Title: RedisController
 * @Description: TODO
 * @Date: 2022/4/27 16:34
 */
@RestController
public class RedisController {
    @Autowired
    private RedisUtils redisUtils;

    @Autowired
    private RedisTemplateUtils redisTemplateUtils;

    @RequestMapping("/addUser")
    public String addUser(UserEntity userEntity) {
        // 1.将我们的对象转换成json
//        String json = JSONObject.toJSONString(userEntity);
//        redisUtils.setString("userEntity", json);
        redisTemplateUtils.setObject("userEntity", userEntity);
        return "存储成功！";
    }

    @RequestMapping("/getUser")
    public UserEntity getUser(String key) {
//        String json = redisUtils.getString(key);
//        UserEntity userEntity = JSONObject.parseObject(json, UserEntity.class);
        return (UserEntity) redisTemplateUtils.getObject(key);
    }
}

四、实体类

package com.demo.entity;

import lombok.Data;

import java.io.Serializable;

/**
 * @Author: JYC
 * @Title: userEntity
 * @Description: TODO
 * @Date: 2022/4/27 16:33
 */
@Data
public class UserEntity implements Serializable {
    private Long userId;
    private String userName;
}

五、配置文件

spring:
  redis:
    host: 192.168.1.100
    password: root
    port: 6379