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
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//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
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<dependencies> <dependency> <groupid>redis.clients</groupid> <artifactid>jedis</artifactid> <version>3.2.0</version> </dependency> </dependencies> |
3.创建一个class
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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
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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
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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
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jedis.mset("str1","v1","str2","v2","str3","v3"); system.out.println(jedis.mget("str1","str2","str3")); |
list
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list<string> list = jedis.lrange("mylist",0,-1); for (string element : list) { system.out.println(element); } |
set
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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
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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); } |
zset
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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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原文链接：https://blog.csdn.net/Andrew0219/article/details/120329969
