目录

Jedis常用操作

创建测试程序​编辑

测试相关数据类型

Jedis-API:    Key

Jedis-API:    String

Jedis-API:    List

Jedis-API:    set

​​​​​​​Jedis-API:    hash

Jedis-API:    zset

Jedis案例——模拟验证码发送

SpringBoot整合Redis

Jedis常用操作

引入依赖：

    redis.clients
    jedis
    3.2.0

创建测试程序

import redis.clients.jedis.Jedis;
public class Demo01 {
    public static void main(String[] args) {
        //创建redis对象
        Jedis jedis = new Jedis("192.168.137.3",6379);
        //ping()方法，如果连接成功则会返回一个值，否则报错
        String pong = jedis.ping();
        System.out.println("连接成功："+pong);
        jedis.close();
    }
}

禁用Linux的防火墙：Linux(CentOS7)里执行命令（关闭防火墙之后，一定要重启）

systemctl stop/disable firewalld.service  

redis.conf中注释掉bind 127.0.0.1 ,然后 protected-mode no

如果之前设置过密码的话，要在创建对象后设置auth

jedis.auth("你的密码");一定要放在，Jedis jedis = new Jedis("");下面

测试相关数据类型

​​​​​​​Jedis-API:    Key

@Test
public void demo1(){
    //创建redis对象
    Jedis jedis = new Jedis("192.168.137.3",6379);
    //添加key
    jedis.set("k1", "v1");
    jedis.set("k2", "v2");
    jedis.set("k3", "v3");
    //参数为“*”表示得到所有的key，返回一个Set集合
    Set keys = jedis.keys("*");
    System.out.println(keys.size());
    for (String key : keys) {
        System.out.println(key);
    }
    System.out.println(jedis.exists("k1"));
    System.out.println(jedis.ttl("k1"));                
    System.out.println(jedis.get("k1"));  
}

​​​​​​​Jedis-API:    String

//设置多个key-value
jedis.mset("str1","v1","str2","v2","str3","v3");
List mget = jedis.mget("str1","str2","str3");
System.out.println(mget);//输出相应的value

Jedis-API:    List

jedis.lpush("mylist","lucy","mary","jack");
List list = jedis.lrange("mylist",0,-1);//把所有值都取出来
for (String element : list) {
    System.out.println(element);
}

Jedis-API:    set

//注意key的名字不要和之前冲突
jedis.sadd("orders", "order01");
jedis.sadd("orders", "order02");
jedis.sadd("orders", "order03");
jedis.sadd("orders", "order04");
Set smembers = jedis.smembers("orders");
for (String order : smembers) {
    System.out.println(order);
}
jedis.srem("orders", "order02");

​​​​​​​Jedis-API:    hash

jedis.hset("hash1","userName","lisi");
System.out.println(jedis.hget("hash1","userName"));

Map map = new HashMap();
map.put("telphone","13810169999");
map.put("address","atguigu");
map.put("email","abc@163.com");

jedis.hmset("hash2",map);
List result = jedis.hmget("hash2", "telphone","email");
for (String element : result) {
    System.out.println(element);
}

Jedis-API:    zset

jedis.zadd("zset01", 100d, "z3");
jedis.zadd("zset01", 90d, "l4");
jedis.zadd("zset01", 80d, "w5");
jedis.zadd("zset01", 70d, "z6");
 
Set zrange = jedis.zrange("zset01", 0, -1);
for (String e : zrange) {
    System.out.println(e);
}

Jedis案例——模拟验证码发送

要求：

1、输入手机号，点击发送后随机生成6位数字码，2分钟有效

随机生成6位数字码：Random

2分钟有效：把验证码放到redis里面,设置过期时间120秒

2、输入验证码，点击验证，返回成功或失败

验证：从redis获取验证码和输入的验证码进行比较

3、每个手机号每天只能输入3次

incr（每次发送之后+1）大于2时候，提交不能发送

package com.zqf.jedis_redsidemo;

import redis.clients.jedis.Jedis;

import java.util.Random;

public class PhoneCode {
    public static void main(String[] args) {
        //模拟验证码
        verifyCode("12345678974");

//        getRedisCode("12345678974","983534");
    }

    //1.生成6位数验证码
    public static String getCode(){
        Random random = new Random();
        String code = "";
        for (int i=0;i<6;i++){
            int i1 = random.nextInt(10);
            code += i1;
        }
        return code;
    }


    //2.每个手机每天只能发送三次，验证码放到redis中，设置过期时间
    public static void verifyCode(String phone){
        //连接redis
        Jedis jedis = new Jedis("192.168.2.129",6379);
        //拼接key
        //手机发送次数key
        String countKey = "VerifyCode"+phone+":count";
        //验证码key
        String codeKey = "VerifyCode"+phone+":code" ;

        //每个手机每天只能发送三次
        String count = jedis.get(countKey);   //从redis中取出发送次数
        if (count == null){
            //没有发送次数  第一次发送
            //设置发送次数是1
            jedis.setex(countKey,24*60*60,"1");     //key,过期时间,value
        }else if (Integer.parseInt(count)<=2){
            //发送次数+1
            jedis.incr(countKey);
        }else if(Integer.parseInt(count)>2){
            System.out.println("24h内发送次数已经超过三次");
            jedis.close();
            return;   //三次之后return   以下代码将不执行
        }

        //发送验证码到redis
        String vcode = getCode();
        jedis.setex(codeKey,120,vcode);
        jedis.close();
        
    }


    //3.验证码校验
    public static void getRedisCode(String phone,String code){
        //从redis里获取验证码
        Jedis jedis = new Jedis("192.168.2.129",6379);
        //验证码key
        String codeKey = "VerifyCode"+phone+":code" ;
        String redisCode = jedis.get(codeKey);
        //判断
        if (code.equals(redisCode)){
            System.out.println("成功");
        }else {
            System.out.println("失败");
        }

    }


}

SpringBoot整合Redis

• 1.引入redis相关依赖

    org.springframework.boot
    spring-boot-starter-data-redis




    org.apache.commons
    commons-pool2
    2.6.0

• 2.application.properties配置redis配置 

#Redis服务器地址
spring.redis.host=192.168.xxx.xxx
#Redis服务器连接端口
spring.redis.port=6379
#Redis数据库索引（默认为0）
spring.redis.database= 0
#连接超时时间（毫秒）
spring.redis.timeout=1800000
#连接池最大连接数（使用负值表示没有限制）
spring.redis.lettuce.pool.max-active=20
#最大阻塞等待时间(负数表示没限制)
spring.redis.lettuce.pool.max-wait=-1
#连接池中的最大空闲连接
spring.redis.lettuce.pool.max-idle=5
#连接池中的最小空闲连接
spring.redis.lettuce.pool.min-idle=0

• 3.创建配置类，配置Redis里的相关内容

package com.zqf.jedis_redsidemo.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import java.time.Duration;

@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport {

    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate template = new RedisTemplate<>();
        RedisSerializer redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();//Objectmapper是jackson的依赖，目的把对象写成json格式
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        template.setConnectionFactory(factory);
        //key序列化方式
        template.setKeySerializer(redisSerializer);
        //value序列化
        template.setValueSerializer(jackson2JsonRedisSerializer);
        //value hashmap序列化
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        return template;
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisSerializer redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        //解决查询缓存转换异常的问题
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        // 配置序列化（解决乱码的问题）,过期时间600秒
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofSeconds(600))
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                .disableCachingNullValues();
        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                .cacheDefaults(config)
                .build();
        return cacheManager;
    }
}

• 4.RedisTestController中添加测试方法

package com.zqf.jedis_redsidemo.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/redisTest")
public class RedisTestController {
    @Autowired
    private RedisTemplate redisTemplate;

    @GetMapping
    public String testRedis() {
        //设置值到redis
        redisTemplate.opsForValue().set("name","lucy");
        //从redis获取值
        String name = (String)redisTemplate.opsForValue().get("name");
        return name;
    }
}