spring data redis 简单连接测试 redis - Redis - 数据库学习 - 学习 | Jalen's Blog = Follow your heart = A happy life

# 使用 idea 创建 spring boot 项目

idea->File->New->Project->Spring Initializr->Next->Next->NoSQL->Spring Data Redis->Next->Finish

# 修改配置 application.properties

spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.password=1qaz@wsx

# 修改启动类 DemoApplication.java

	package com.example.demo;

	import org.springframework.beans.factory.annotation.Autowired;
	import org.springframework.boot.CommandLineRunner;
	import org.springframework.boot.SpringApplication;
	import org.springframework.boot.autoconfigure.SpringBootApplication;
	import org.springframework.context.annotation.Bean;
	import org.springframework.data.redis.core.RedisTemplate;
	import org.springframework.data.redis.core.StringRedisTemplate;

	@SpringBootApplication
	public class DemoApplication {

	public static void main(String[] args) {
	SpringApplication.run(DemoApplication.class, args);
	}

	@Autowired
	public DemoApplication(RedisTemplate redisTemplate,
	StringRedisTemplate stringRedisTemplate) {
	this.redisTemplate = redisTemplate;
	this.stringRedisTemplate = stringRedisTemplate;
	}
	private RedisTemplate redisTemplate;
	private StringRedisTemplate stringRedisTemplate;

	@Bean
	@SuppressWarnings("unchecked")
	CommandLineRunner runRedisTemplateTest(){
	return args -> {
	System.out.println("redisTemplate");
	redisTemplate.opsForValue().set("name", "Kitty");
	Object name = redisTemplate.opsForValue().get("name");
	System.out.println(name);
	System.out.println("-----------End---------");
	};
	}

	@Bean
	CommandLineRunner runStringRedisTemplateTest(){
	return args -> {
	System.out.println("stringRedisTemplate start");
	Object name = stringRedisTemplate.opsForValue().get("name");
	System.out.println(name);
	System.out.println("-----------End---------");
	};
	}
	}

# 右键运行启动类 DemoApplication.java, 输出如下

redisTemplate
Kitty
-----------End---------
stringRedisTemplate start
Jalen
-----------End---------

遇到的问题：

当我们使用 redis-cli 执行 set name Jalen 后，通过 redisTemplate 获取 name 总是获取不到，但是通过 stringRedisTemplate 可以获取到，原因是两者的默认使用的序列化方式不一致

// redisTemplate默认使用JdkSerializationRedisSerializer
// stringRedisTemplate默认使用StringRedisSerializer
// 如果想让redisTemplate输出正常，可以手动设置一下redisTemplate的key/value序列化方式，即
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.setValueSerializer(new StringRedisSerializer());
 
// 其实这种情况有些多余，直接使用stringRedisTemplate就好啦

使用 python 连接 redis

	import redis

	pool = redis.ConnectionPool(host="127.0.0.1", port=6379, password="1qaz@wsx", max_connections=1024)
	conn = redis.Redis(connection_pool=pool)
	print(conn.get("name"))

redis spring data