Spring-Data-Redis

操作 Redis 的 api

Springboot 下使用 Spring-Data-Redis

插入数据 key 乱码

alt

解决办法:

查看 自动配置类 ctrl + f

alt

        //自定义序列化方式
        RedisSerializer<String> stringSerializer = new StringRedisSerializer(Charset.forName("GBK"));
        template.setKeySerializer(stringSerializer);
        template.setValueSerializer(stringSerializer);
        template.setHashKeySerializer(stringSerializer);
        template.setHashValueSerializer(stringSerializer);

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

/**
 * @author CodeHaywire
 */
@SpringBootApplication
@ComponentScan({"com.example.config"})
public class DemoApplication {

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

}

package com.example.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.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import java.nio.charset.Charset;

/**
 * @ClassName : RedisSerializerConfig
 * @Description : 自定义序列化
 * @Author : CodeHaywire
 * @Created at 2022/4/24 17:14
 */
@Configuration
public class RedisSerializerConfig {
    @Bean
    public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<Object, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(redisConnectionFactory);
        //自定义序列化方式
        RedisSerializer<String> stringSerializer = new StringRedisSerializer(Charset.forName("GBK"));
        template.setKeySerializer(stringSerializer);
        template.setValueSerializer(stringSerializer);
        template.setHashKeySerializer(stringSerializer);
        template.setHashValueSerializer(stringSerializer);
        return template;
    }
}



package com.example.demo;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;

@SpringBootTest
class DemoApplicationTests {
    //注入  RedisTemplate 线程是安全的

    @Autowired


    private RedisTemplate redisTemplate;

    @Test
    void contextLoads() {
        ValueOperations valueOperations = redisTemplate.opsForValue();
        valueOperations.set("你好", "你好");
        System.out.println(valueOperations.get("你好"));
    }
}

cmd 查看 key 中文乱码：不使用 redis-cli

换成 redis-cli --raw

E:\idea-workspace\learn-spring-data-redis>redis-cli
127.0.0.1:6379> keys *
1) "\xc4\xe3\xba\xc3"

E:\idea-workspace\learn-spring-data-redis>redis-cli --raw
127.0.0.1:6379> keys *
你好
127.0.0.1:6379> get 你好
你好

tip：正常情况下也不会 key 使用中文

乱码影响查看，但是不影响编码

点击查看 api 文档

RedisTemplate的使用方法      important

String类型的常用方法

        //键值同时操作redis  很像cmd操作redis
        ValueOperations valueOperations = redisTemplate.opsForValue();
        valueOperations.set("name", "ZanSan");

        //先绑定键再操作redis的值 假如user需要多次操作,key可以不重复写 set("name", "ZanSan");
        BoundValueOperations user = redisTemplate.boundValueOps("name");
        user.set("ZanSan");

以上两种都可以插入数据，哪个方便哪个来

package com.example.demo;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.BoundValueOperations;
import org.springframework.data.redis.core.RedisTemplate;

import java.util.concurrent.TimeUnit;

@SpringBootTest
class DemoApplicationTests {
    //注入  线程是安全的

    @Autowired
    private RedisTemplate redisTemplate;

    @Test
    void contextLoads() {
        BoundValueOperations user = redisTemplate.boundValueOps("name");
        //设置过期时间 10s过期
        user.set("CodeHaywire",10, TimeUnit.SECONDS);
    }
}


C:\Users\CodeHaywire>redis-cli --raw

127.0.0.1:6379> keys *
name
127.0.0.1:6379> get name
CodeHaywire

127.0.0.1:6379> keys *   #这是10s后的操作

127.0.0.1:6379>