redis使用、手机验证码实例、SpringBoot整合Redis_maven连接redis写手机验证码-优快云博客

本文链接：https://blog.youkuaiyun.com/sunhmm/article/details/126250669

Redis使用

一、Jedis操作Redis6
二、实例-手机验证码
三、SpringBoot整合Redis

一、Jedis操作Redis6

demo测试

1、创建项目

File --> New --> Project --> Maven

2、引入Jedis所需要的jar包

<dependency>
	<groupId>redis.clients</groupId>
	<artifactId>jedis</artifactId>
	<version>3.2.0</version>
</dependency>

3、创建测试类Demo01

import redis.clients.jedis.Jedis;
public class Demo01 {
	public static void main(String[] args) {
		//创建Jedis对象
		Jedis jedis = new Jedis("192.168.137.3",6379);
		String pong = jedis.ping();
		System.out.println("连接成功："+pong);
		jedis.close();
	}
}

如连接不成功注意配置文件是否修改

一、默认情况bind=127.0.0.1只能接受本机的访问请求
不写的情况下，无限制接受任何ip地址的访问
在这里插入图片描述
二、将本机访问保护模式设置no

三、查看防火墙是否关闭

Jedis-API: Key

@Test
public void demo1(){
	//创建Jedis对象
	jedis jedis = new Jedis("192.168.137.3",6379);
	//添加
	jedis.set("k1", "v1");
	jedis.set("k2", "v2");
	jedis.set("k3", "v3");
	//获取所有key
	Set<String> keys = jedis.keys("*");
	for (String key : keys) {
		System.out.println(key);
	}
	System.out.println(keys.size());
	//判断是否存在指定key
	System.out.println(jedis.exists("k1"));
	//查看过期时间
	System.out.println(jedis.ttl("k1"));       
	//获取key对应的值         
	System.out.println(jedis.get("k1"));
}

Jedis-API: String

@Test
public void demo1(){
	//创建Jedis对象
	jedis jedis = new Jedis("192.168.137.3",6379);
	jedis.mset("k1","v1","k2","v2","k3","v3");
	System.out.println(jedis.mget("k1","k2","k3"));
}

Jedis-API: List

@Test
public void demo1(){
	//创建Jedis对象
	jedis jedis = new Jedis("192.168.137.3",6379);
	jedis.lpush("key1","a1","a2","a3")
	List<String> list = jedis.lrange("key1",0,-1);
	for (String element : list) {
		System.out.println(element);
	}
}

Jedis-API: set

@Test
public void demo1(){
	//创建Jedis对象
	jedis jedis = new Jedis("192.168.137.3",6379);
	jedis.sadd("orders", "order01");
	jedis.sadd("orders", "order02");
	jedis.sadd("orders", "order03");
	jedis.sadd("orders", "order04");
	Set<String> smembers = jedis.smembers("orders");
	for (String order : smembers) {
		System.out.println(order);
	}
	jedis.srem("orders", "order02");
}

Jedis-API: Hash

@Test
public void demo1(){
	//创建Jedis对象
	jedis jedis = new Jedis("192.168.137.3",6379);
	jedis.hset("hash1","userName","lisi");
	System.out.println(jedis.hget("hash1","userName"));
	Map<String,String> map = new HashMap<String,String>();
	map.put("telphone","13810169999");
	map.put("address","atguigu");
	map.put("email","abc@163.com");
	jedis.hmset("hash2",map);
	List<String> result = jedis.hmget("hash2","telphone","email");
	for (String element : result) {
		System.out.println(element);
	}
}

Jedis-API: zset

@Test
public void demo1(){
	//创建Jedis对象
	jedis jedis = new Jedis("192.168.137.3",6379);
	jedis.zadd("zset01", 100d, "z3");
	jedis.zadd("zset01", 90d, "l4");
	jedis.zadd("zset01", 80d, "w5");
	jedis.zadd("zset01", 70d, "z6");
	Set<String> zrange = jedis.zrange("zset01", 0, -1);
	for (String e : zrange) {
		System.out.println(e);
	}
}

二、实例-手机验证码

需求

输入手机号，点击发送后随机生成6位数字码，2分钟有效
输入验证码，点击验证，返回成功或失败
每个手机号每天只能输入3次

分析

使用Random生成随机6位数字验证码
将验证码放到Redis中，设置过期时间为120秒；从redis获取验证码和输入的验证码进行比较
使用incr 每次发送成功后+1

功能实现

import redis.clients.jedis.Jedis;

import java.util.Random;

public class PhoneCode {

    public static void main(String[] args) {
        //模拟验证码发送
        verifyCode("13678765435");

        //模拟验证码校验
        //getRedisCode("13678765435","4444");
    }

    //3 验证码校验
    public static void getRedisCode(String phone,String code) {
        //从redis获取验证码
        Jedis jedis = new Jedis("192.168.44.168",6379);
        //验证码key
        String codeKey = "VerifyCode"+phone+":code";
        String redisCode = jedis.get(codeKey);
        //判断
        if(redisCode.equals(code)) {
            System.out.println("成功");
        }else {
            System.out.println("失败");
        }
        jedis.close();
    }

    //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120
    public static void verifyCode(String phone) {
        //连接redis
        Jedis jedis = new Jedis("192.168.44.168",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);
        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");
        } else if(Integer.parseInt(count)<=2) {
            //发送次数+1
            jedis.incr(countKey);
        } else if(Integer.parseInt(count)>2) {
            //发送三次，不能再发送
            System.out.println("今天发送次数已经超过三次");
            jedis.close();
            return;
        }

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

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

三、SpringBoot整合Redis

创建SpringBoot项目

File --> New --> Project --> Spring Initializr

在pom.xml文件中引入redis相关依赖

<!-- redis -->
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!-- spring2.X集成redis所需common-pool2-->
<dependency>
	<groupId>org.apache.commons</groupId>
	<artifactId>commons-pool2</artifactId>
	<version>2.6.0</version>
</dependency>

application.properties配置redis配置

#Redis服务器地址
spring.redis.host=192.168.140.136
#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

添加redis配置类

@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport {

    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        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<String> 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;
    }
}

测试一下

@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;
     }
}