1. RedisJedis测试

Jedis所需要的jar包

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

连接Redis注意事项

禁用Linux的防火墙：Linux(CentOS7)里执行命令
systemctl stop/disable firewalld.service

Jedis常用操作

IDEA准备

创建动态的工程

创建测试程序

填写redis的主机地址和端口号

public class test {
    public static void main(String[] args) {
        JedisShardInfo shardInfo = new JedisShardInfo("redis://192.168.56.10:6379");    //ip和端口
        shardInfo.setPassword("root");//这里是密码
//        Jedis jedis = new Jedis("192.168.56.10",6379);    //redis无密码
        Jedis jedis = new Jedis(shardInfo);
        String pong = jedis.ping();
        System.out.println("连接成功："+pong);
        jedis.close();
    }
}

注意：

1. 开启远程访问，注释掉ip绑定。在redis.conf中修改两处
   • redis.conf中注释掉bind 127.0.0.1 ,然后 protected-mode no

测试相关数据类型

Jedis-API: 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"));

Jedis-API: String

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

Jedis-API: List

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

Jedis-API: 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");

1.4.5. Jedis-API: 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","abc@163.com");
jedis.hmset("hash2",map);
List<String> result = jedis.hmget("hash2", "telphone","email");
for (String element : result) {
System.out.println(element);
}

1.4.6. Jedis-API: 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);
}

RedisJedis实例

完成一个手机验证码功能

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
2、输入验证码，点击验证，返回成功或失败
3、每个手机号每天只能输入3次

具体操作

public class test {

    @Test
    public void testverifyCode(){
        //模拟验证码发送
        verifyCode("110");
    }
    @Test
    public void testgetRedisCode(){
        //模拟验证码校验
        getRedisCode("110","119956");
    }

    //3 验证码校验
    public static void getRedisCode(String phone,String code) {
        JedisShardInfo shardInfo = new JedisShardInfo("192.168.56.10",6379);
        shardInfo.setPassword("root");//这里是密码
        Jedis jedis = new Jedis(shardInfo);
        //验证码key
        String codeKey = "VerifyCode"+phone+":code";        //验证码的键
        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) {
        JedisShardInfo shardInfo = new JedisShardInfo("192.168.56.10",6379);
        shardInfo.setPassword("root");//这里是密码
        Jedis jedis = new Jedis(shardInfo);

        //拼接key
        //手机发送次数的key
        String countKey = "VerifyCode"+phone+":count";        
        //验证码的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();
        }

        //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;
    }
}