Redis基础-快速入门|基本数据类型指令

一、Redis入门

1.Redis简介

2.Redis 下载与安装

3.Redis 数据类型

1、介绍

2、Redis常见5种数据类型

二、Redis 常用命令

1.字符串 string 操作命令

2.哈希 hash 操作命令

3. 列表 list 操作命令

4. 集合 set 操作命令

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5. 有序集合 sorted set 操作命令

6. 通用命令

三、在 Java 中操作 Redis

1. redis中5种类型java代码

java中操作redis代码：

package com.example.springdataredis_demo;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.connection.DataType;
import org.springframework.data.redis.core.*;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.Set;

@SpringBootTest
@RunWith(SpringRunner.class)
public class SpringDataRedisTest {
    
    

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    /**
     * 操作string类型的数据
     */
    @Test
    public void testString(){
    
    
//        stringRedisTemplate.opsForValue().set("city","beijing");
//        stringRedisTemplate.opsForValue().get("city");
        Boolean aBoolean = stringRedisTemplate.opsForValue().setIfAbsent("city22", "东京");
        System.out.println(aBoolean);
    }

    /**
     * 操作hash类型的数据（适合存对象
     */
    @Test
    public void testHash(){
    
    
        //存值
        HashOperations<String, String, String> hashOperations = stringRedisTemplate.opsForHash();
        hashOperations.put("001","姓名","小明");
        hashOperations.put("001","年龄","20");
        hashOperations.put("001","生日","2001-09-05");

        //取值
        String name = hashOperations.get("001", "姓名");
        System.out.println(name);

        for (String key : hashOperations.keys("001")) {
    
    
            System.out.println(key);
        }
        for (String value : hashOperations.values("001")) {
    
    
            System.out.println(value);
        }
    }

    /**
     * List类型的数据
     */

    @Test
    public void testList(){
    
    
        ListOperations<String, String> listOperations = stringRedisTemplate.opsForList();
        listOperations.leftPush("003","a");

        listOperations.leftPushAll("003","b","c","d");

        for (String s : listOperations.range("003", 0, -1)) {
    
    
            System.out.println(s);
        }

        Long size = listOperations.size("003");
        for (int i=0;i<size;i++){
    
    
            String s = listOperations.rightPop("003");
            System.out.println(s);
        }

    }

    /**
     * set类型的数据（特点是不可重复
     */

    @Test
    public void testSet(){
    
    
        SetOperations<String, String> setOperations = stringRedisTemplate.opsForSet();
        setOperations.add("myset","a","b","c","a");
        Set<String> mySet = setOperations.members("myset");
        for (String s : mySet) {
    
    
            System.out.println(s);
        }

        setOperations.remove("myset","a","b");
        mySet = setOperations.members("myset");
        for (String s : mySet) {
    
    
            System.out.println(s);
        }
    }

    /**
     * 测试ZSet类型的数据（可以根据分值排序
     */
    @Test
    public void testZSet(){
    
    
        //存值
        ZSetOperations<String, String> zSetOperations = stringRedisTemplate.opsForZSet();
        zSetOperations.add("myzset2","a",10.0);
        zSetOperations.add("myzset2","b",11.0);
        zSetOperations.add("myzset2","c",12.0);
        zSetOperations.add("myzset2","a",13.0);


        //取值
        for (String myzset : zSetOperations.range("myzset2", 0, -1)) {
    
    
            System.out.println(myzset);
        }

        //增长分数
        zSetOperations.incrementScore("myzset2","b",10);

        //取值
        for (String myzset : zSetOperations.range("myzset2", 0, -1)) {
    
    
            System.out.println(myzset);
        }

        //删除
        zSetOperations.remove("myzset2","a","b");

        //取值
        for (String myzset : zSetOperations.range("myzset2", 0, -1)) {
    
    
            System.out.println(myzset);
        }

    }

    /**
     * 通用操作
     */

    @Test
    public void testCommon(){
    
    
        //获取所有的key
        for (String key : stringRedisTemplate.keys("*")) {
    
    
            System.out.println(key);
        }

        //判断某个key是否存在
        Boolean myset = stringRedisTemplate.hasKey("myset");
        System.out.println(myset);

        //返回某个key的类型
        DataType myset1 = stringRedisTemplate.type("myset");
        System.out.println(myset1.name());

        //删除某个key
        stringRedisTemplate.delete("myset");

    }
}