Redis-07-Redis的java应用（Jides）

以你之姓@ 2023-09-30 08:09 7阅读 0赞

### 文章目录 ###

*  1：Jedis导包
 *  2:java使用Jedis连接redis注意事项
 *  3:Jedis的hellowrold
 *  4:使用jedis测试相关数据类型
 *   *  1：key
     *  2:String
     *  3：list
     *  4:zset
     *  5:hash
     *  6:zset
 *  5:jedis实例-手机验证码功能

# 1：Jedis导包 #

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

# 2:java使用Jedis连接redis注意事项 #

*  redis.conf中注释掉bind 127.0.0.1 ,然后 protected-mode no 并重启redis
 *  禁用Linux的防火墙,或者开放对应端口：Linux(CentOS7)里执行命令：
    
     *  查看防火墙状态：systemctl status firewalld
     *  关闭防火墙命令：systemctl stop/disable firewalld.service

# 3:Jedis的hellowrold #

@Test
        public void test1(){
        
            //                              ip地址             端口号
            Jedis jedis = new Jedis("192.168.0.113",6379);
            String ping = jedis.ping();
    
            System.out.println(ping);
            jedis.close();
        }

# 4:使用jedis测试相关数据类型 #

## 1：key ##

//测试key的操作
        @Test
        public void testKey(){
        
            Jedis jedis = new Jedis("192.168.0.113",6379);
            Set<String> keys = jedis.keys("*");
            for (String key : keys) {
        
                System.out.println(key);
    
            }
    
    
            System.out.println(jedis.exists("k1"));
            System.out.println(jedis.ttl("k1"));
            jedis.close();
        }

## 2:String ##

//测试Sting类型
        @Test
        public void testString(){
        
            Jedis jedis = new Jedis("192.168.0.113",6379);
            jedis.set("str1","hello");
            jedis.mset("str2","world","str3","zhangsan");
            List<String> mget = jedis.mget("str1", "str2", "str3");
            System.out.println(mget);
    
            jedis.close();
        }

## 3：list ##

//测试list类型-双向链表
        @Test
        public void testList(){
        
            Jedis jedis = new Jedis("192.168.0.113",6379);
            jedis.lpush("list1","1","2","3","4");
            List<String> list1 = jedis.lrange("list1", 0, -1);
            for (String s : list1) {
        
                System.out.println(s);
    
            }
    
            jedis.close();
        }

## 4:zset ##

//测试set类型-无序集合
        @Test
        public void testSet(){
        
            Jedis jedis = new Jedis("192.168.0.113",6379);
            jedis.sadd("set1","hello","world","hello");
            Set<String> set1 = jedis.smembers("set1");
            for (String s : set1) {
        
                System.out.println(s);
            }
    
            jedis.close();
        }

## 5:hash ##

//测试hash类型-存储对象
        @Test
        public void testHash(){
        
            Jedis jedis = new Jedis("192.168.0.113",6379);
            jedis.hset("hash1","name","zhangsan");
            jedis.hset("hash1","age","22");
            Map<String,String> map = new HashMap<>();
            map.put("name","李四");
            map.put("age","23");
            jedis.hset("hash2",map);
    
            Map<String, String> hash1 = jedis.hgetAll("hash1");
            System.out.println(hash1);
            Map<String, String> hash2 = jedis.hgetAll("hash2");
            System.out.println(hash2);
    
            jedis.close();
        }

## 6:zset ##

//测试zset类型
        @Test
        public void testZet(){
        
            Jedis jedis = new Jedis("192.168.0.113",6379);
            jedis.zadd("zset1",100,"java");
            jedis.zadd("zset1",200,"mysql");
            jedis.zadd("zset1",300,"php");
            Set<String> zset1 = jedis.zrange("zset1", 0, -1);
            for (String s : zset1) {
        
                System.out.println(s);
            }
    
    
            jedis.close();
        }

# 5:jedis实例-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

import org.junit.Test;
    import redis.clients.jedis.Jedis;
    
    import java.util.Random;
    
    /**
     * Description:
     * 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
     * Date:       2022/3/5 - 上午 1:29
     * author:     wangkanglu
     * version:    V1.0
     */
    public class PhoneCode {
        
    
        //这是一个程序入口
        public static void main(String[] args) {
        
            //生成验证码
    //        verifyCode("123456789");
    
            //验证验证码
            getRedisCode("123456789","822540");
        }
    
        //1:获取六位数验证码
        public static String getCode(){
        
            StringBuilder code = new StringBuilder();
    
            Random random = new Random();
            for (int i = 0; i < 6; i++) {
        
                code.append(random.nextInt(10));
            }
    
            return code.toString();
        }
    
        //2:每个手机号每天只能输入三次，并且验证码在2分钟内有效
    
        public static void verifyCode(String phone){
        
            Jedis jedis = new Jedis("192.168.0.113",6379);
            //设置验证码次数的key
            String phoneCodecount = "code_"+phone+"_count";
            //设置验证码的key
            String phoneCode = "code_"+phone;
    
            if(!jedis.exists(phoneCodecount)){
        
                //查看如果验证码次数不存在就增加
                jedis.setex(phoneCodecount,24*60*60,"1");
            }else if (Integer.valueOf(jedis.get(phoneCodecount))<2){
        
                //如果验证码次数没达到3次，那么久增加
                jedis.incrBy(phoneCodecount,1);
            }else {
        
                System.out.println("今日验证码次数已达到3次");
                jedis.close();
                return;
            }
    
            //生成验证码放进redis中
            String code = getCode();
            jedis.setex(phoneCode,120,code);
            System.out.println("生成新的验证码："+code);
            jedis.close();
        }
    
        //3:对传进来的验证码进行验证
        public static void getRedisCode(String phone,String code){
        
            Jedis jedis = new Jedis("192.168.0.113",6379);
            //设置验证码的key
            String phoneCode = "code_"+phone;
            //从redis中获取验证码
            String phoneCODE = jedis.get(phoneCode);
            if(code.equals(phoneCODE)){
        
                System.out.println("成功");
            }else {
        
                System.out.println("失败");
            }
        }
    }