目录
- 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","abc@163.com");
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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