Redis基础学习

目录

Redis命令

通用命令

String

Key的顶层格式

Hash

List

Set

SortedSet

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Redis命令

通用命令

想知道某个命令怎么用

1.可以在官网学习用法

https://www.redis.net.cn/order/

2.  使用 help+命令

String

Key的顶层格式

Hash

List

Set

SortedSet

在IDEA使用Jedis操作Redis

常规使用

引入依赖

我的pom.xml

<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>com.leo</groupId>
  <artifactId>jedis-work</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>jedis-work</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <junit.jupiter.version>5.7.0</junit.jupiter.version>
  </properties>

  <dependencies>
    <!--jedis-->
    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>3.7.0</version>
    </dependency>
    <!--单元测试-->
    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter</artifactId>
      <version>5.7.0</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>2.22.2</version>
        <configuration>
          <includes>
            <include>**/*Test.java</include>
            <include>**/*Tests.java</include>
          </includes>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

我的测试

package com.leo.test;

import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import redis.clients.jedis.Jedis;
import org.junit.jupiter.api.Test;

public class TestRedis {
    private Jedis jedis;

    @BeforeEach
    void setUp() {
        // 1.建立连接
        jedis = new Jedis("192.168.**.**", 6379);  //根据自己的ip
        // 2.设置密码
        jedis.auth("***");   自己的密码
        // 3.选择库
        jedis.select(0);
    }
    @Test
    void testString() {
        // 存入数据
        String result = jedis.set("name2", "大哥");
        System.out.println("result = " + result);
        // 获取数据
        String name = jedis.get("name2");
        System.out.println("name = " + name);
    }
    @AfterEach
    void tearDown() {
        if (jedis != null) {
            jedis.close();
        }
    }
}

Jedis的连接池

1.配置Jedis连接池工具类

package Utils;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public class JedisConnectionFactory {
    private static final JedisPool jedisPool;

    static {
        //配置连接池
        JedisPoolConfig poolConfig = new JedisPoolConfig();
        poolConfig.setMaxTotal(8);
        poolConfig.setMaxIdle(8);
        poolConfig.setMinIdle(0);
        poolConfig.setMaxWaitMillis(1000);
        //创建连接池对象
        jedisPool = new JedisPool(poolConfig,
                "192.168.88.134",6379,1000,"123321");
    }

    public static Jedis getJedis(){
        return jedisPool.getResource();
    }
}

建立连接使用工具类 

package com.leo.test;

import Utils.JedisConnectionFactory;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import redis.clients.jedis.Jedis;
import org.junit.jupiter.api.Test;
import redis.clients.jedis.JedisFactory;
import redis.clients.jedis.JedisPool;

public class TestRedis {
    private Jedis jedis;
    @BeforeEach
    void setUp() {
        // 1.建立连接
        //  方式1
        // jedis = new Jedis("192.168.88.134", 6379);
        //  方式2
        jedis= JedisConnectionFactory.getJedis();
        // 2.设置密码
        jedis.auth("123321");
        // 3.选择库
        jedis.select(0);
    }
    @Test
    void testString() {
        // 存入数据
        String result = jedis.set("name3", "小弟");
        System.out.println("result = " + result);
        // 获取数据
        String name = jedis.get("name3");
        System.out.println("name = " + name);
    }
    @AfterEach
    void tearDown() {
        if (jedis != null) {
            jedis.close();
        }
    }
}