Jedis操作Redis实现模拟验证码发送功能

• • key
  • string
  • list

jedis的创建

1.先启动redis 如果报

那么说明你redis服务器服务器端还没打开

//启动服务端
redis-server /etc/redis.conf
//启动客户端
redis-cli

如果启动成功，就是这样

2.创建一个maven工程

导入jedis依赖

<dependencies>
        <dependency>
            <groupid>redis.clients</groupid>
            <artifactid>jedis</artifactid>
            <version>3.2.0</version>
        </dependency>
    </dependencies>

3.创建一个class

public class jedisdemo1 {
    public static void main(string[] args) {
        jedis jedis = new jedis("xx.xxx.xx.xx",6379);
        //如果redis配置了密码就在这里输入不然会连接失败
        jedis.auth("xxxx");
        string value = jedis.ping();
        system.out.println(value);
    }
}

如果是第一次连接会很大概率报错

这时候有两种方法第一种是关闭防火墙，但是这种不太好，其实只要开放6379端口连接就可以了

jedis实现模拟验证码

public class phonecode {
    public static void main(string[] args) {

            verifycode("12345678900");
            //校验验证码是否正确
//            getrediscode("12345678900","940487");
    }

    //1.生成六位验证码
    public static string getcode(){
        random random = new random();
        string code = "";
        for (int i = 0; i < 6; i++) {
            int i1 = random.nextint(10);
            code = code +i1;
        }
        return code;
    }

    //2.每个手机每天只能发三次，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("172.18.17.215",6379);
        jedis.auth("1052600676");
        //先自定义两个key，从而通过后面步骤给key赋一个value
        //手机发送次数
        string countkey = phone+"count";
        //验证码key
        string codekey = phone + "code";

        //每个手机每天只能发送三次
        //通过key查看是否有value
        string count = jedis.get(countkey);
        if (count == null){
            //没有发送次数，说明是第一次发送，那就设置发送次数为1
            jedis.setex(countkey,24*60*60,"1");
        }else if (integer.parseint(count) <= 2){
            jedis.incr(countkey);
        }else if (integer.parseint(count) > 2){
            system.out.println("验证码超过三次，无法发送");
            jedis.close();
            return;
        }

        //设置过期时间
        //value
        string codee = getcode();

        jedis.setex(codekey,120,codee);
        jedis.close();

    }

    //3.验证码校验
    public static void getrediscode(string phone,string code){
        //连接redis
        jedis jedis = new jedis("172.18.17.215",6379);
        jedis.auth("1052600676");

        //验证码key
        string codekey = phone + "code";
        string rediscode = jedis.get(codekey);

        if (rediscode.equals(code)){
            system.out.println("成功");
        }else{
            system.out.println("失败");
        }
        jedis.close();
    }

}

通过这些操作实现验证码发送

超过三次

相关数据类型测试

key

jedis.set("k1", "v1");
	jedis.set("k2", "v2");
	jedis.set("k3", "v3");
		
	set<string> 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"));

string

jedis.mset("str1","v1","str2","v2","str3","v3");
	
	system.out.println(jedis.mget("str1","str2","str3"));

list

list<string> list = jedis.lrange("mylist",0,-1);
	
	for (string element : list) {
		system.out.println(element);
	}

set

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");

hash

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","[e-mail]");
	
	jedis.hmset("hash2",map);
	
	list<string> result = jedis.hmget("hash2","telphone","email");
	
	for (string element : result) {
		system.out.println(element);
	}

zset

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);
	}

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