【Redis】在Java中以及Spring环境下操作Redis
Java环境下：
1.创建maven 项目
2.导入依赖
<!-- redis --> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>4.3.2</version> </dependency>此处使用的是Jedis（提供的api和redis命令高度一致）
3.配置端口转发
防止Redis的端口被黑客攻击 将云服务器的redis端口映射到本地主机中
在xshell中配置：
此时, 访问本地的 8888, 就相当于访问对应服务器的 6379
此时连接成功
一.基本命令：
public static void test(Jedis jedis) { System.out.println("set 和 get 使用"); //清空数据库 jedis.flushAll(); jedis.set("key","k1"); jedis.set("key2","k2"); jedis.set("key3","k3"); String key = jedis.get("key"); String key2 = jedis.get("key2"); String key3 = jedis.get("key3"); System.out.println("key: " + key); System.out.println("key2: " + key2); System.out.println("key3: " + key3); System.out.println("exists 和 del 使用"); boolean result = jedis.exists("key"); System.out.println("result:" + result); result = jedis.exists("key1111"); System.out.println("result:" + result); long del = jedis.del("key", "key2"); result = jedis.exists("key"); System.out.println("result:" + result); System.out.println("keys 使用"); jedis.set("key","k1"); jedis.set("key2","k2"); Set<String> keys = jedis.keys("*"); System.out.println("keys: " + keys); System.out.println("expire 和 ttl 使用"); jedis.set("key4","k4"); jedis.expire("key4",10); //休眠5s try { Thread.sleep(5000); } catch (InterruptedException e) { throw new RuntimeException(e); } long ttl = jedis.ttl("key4"); System.out.println("ttl: " + ttl ); System.out.println("type 使用"); jedis.flushAll(); jedis.set("String", "1"); String type = jedis.type("String"); System.out.println("type: "+type); jedis.lpush("list","111","222","333"); type = jedis.type("list"); System.out.println("type: "+type); jedis.sadd("set","a","b","c"); type = jedis.type("set"); System.out.println("type: "+type); jedis.zadd("zset",1.0,"zhangsan"); type = jedis.type("zset"); System.out.println("type: "+type); jedis.hset("hash","f1 ","v1"); type = jedis.type("hash"); System.out.println("type: "+type); }
String :
public static void test(Jedis jedis) { //清空数据库 jedis.flushAll(); System.out.println("mset 和 mget 使用"); jedis.mset("k1","111","k2","222","k3","333"); List<String> mget = jedis.mget("k1", "k2", "k3","k4"); System.out.println("mget: " +mget); System.out.println("getrange 和 setrange 使用"); jedis.set("k4","abcdefgh"); String k4 = jedis.getrange("k4", 0, 4); System.out.println("result: " +k4); jedis.setrange("k4",0,"eeee"); System.out.println("k4: " +jedis.get("k4")); System.out.println("append 使用"); jedis.append("k4","aaaaaa"); System.out.println("k4: " + jedis.get("k4")); System.out.println("incr 和 decr 使用"); jedis.set("k5","111"); System.out.println( "k5: " + jedis.incr("k5")); System.out.println( "k5: " + jedis.decr("k5")); }
list使用：
public static void test(Jedis jedis) { jedis.flushAll(); System.out.println("lpush 和 lrange 使用"); jedis.lpush("key","1","2","3","4","5"); System.out.println("key:" + jedis.lrange("key",0,-1)); System.out.println("rpuhs ,rpop, lpop 使用 "); jedis.rpush("key2","1","2","3","4","5"); System.out.println("key2 :" + jedis.lrange("key2",0,-1)); System.out.println("lpop key2：" + jedis.lpop("key2")); System.out.println("rpop key2：" + jedis.rpop("key2")); System.out.println("llen 使用"); System.out.println("len key2: " + jedis.llen("key2")); }
hash的使用：
private static void test(Jedis jedis) { jedis.flushAll(); System.out.println("hset 和 hget 使用"); HashMap<String,String> hash = new HashMap<>(); hash.put("f2","v2"); hash.put("f3","v3"); hash.put("f4","v4"); jedis.hset("key",hash); jedis.hset("key","f1","v1"); System.out.println("key f1: " +jedis.hget("key", "f1")); System.out.println("key f5: " +jedis.hget("key", "f5")); System.out.println("hexists 使用"); Boolean result = jedis.hexists("key","f1"); System.out.println("key f1 result: " + result); result = jedis.hexists("key","f5"); System.out.println("key f5 result: " + result); System.out.println("hkeys 和 hvals 使用"); Set<String> hkeys = jedis.hkeys("key"); System.out.println("hkeys： " + hkeys); List<String> hvals = jedis.hvals("key"); System.out.println("hvals: " +hvals); System.out.println("hdel 使用"); jedis.hdel("key","f1"); result = jedis.hexists("key","f1"); System.out.println("key f1 result: " + result); System.out.println("hmset 和 hmget 使用"); List<String> hmget = jedis.hmget("key", "f1", "f2", "f3"); System.out.println("hmget key: " + hmget); }
set的使用：
public static void test(Jedis jedis) { jedis.flushAll(); System.out.println("sadd 和 smembers 使用"); jedis.sadd("key","a","b","c","d"); Set<String> smembers = jedis.smembers("key"); System.out.println("key: " +smembers); System.out.println("sismember ， scard ， spop 使用"); boolean result = jedis.sismember("key", "a"); System.out.println("result: " + result); long len = jedis.scard("key"); System.out.println("key len: " +len); jedis.spop("key"); System.out.println("key len: " +jedis.scard("key")); System.out.println("sinter 和 sinterstore"); jedis.sadd("key2","1","2","3","4","5"); jedis.sadd("key3","3","4","5","6","7"); System.out.println("[key2 key3]sinter: "+ jedis.sinter("key2","key3")); long sinterstore = jedis.sinterstore("key4", "key2", "key3"); System.out.println("sinterstore: " + sinterstore); System.out.println("key4: " + jedis.smembers("key4")); }
zset的使用:
public static void test(Jedis jedis) { jedis.flushAll(); System.out.println("zadd 和 zrange 使用"); jedis.zadd("key",10.0,"zhangsan"); Map<String ,Double> hash = new HashMap<>(); hash.put("lisi",20.0); hash.put("wangwu",30.0); jedis.zadd("key",hash); List<String> members = jedis.zrange("key", 0, -1); System.out.println("members: "+members); List<Tuple> key = jedis.zrangeWithScores("key", 0, -1); System.out.println("key: " + key); System.out.println("zcard , zscore 使用"); long len = jedis.zcard("key"); System.out.println("len key: " +len); Double score = jedis.zscore("key","zhangsan"); System.out.println("score: " + score); System.out.println("zrem , zrank 使用"); Long zrank = jedis.zrank("key", "lisi"); System.out.println("lisi rank: " + zrank); jedis.zrem("key","zhangsan"); System.out.println("lisi rank: " + jedis.zrank("key", "lisi")); }
都是一些基本操作，跟在redis操作基本一致，
Spring环境:
创建项目时勾选即可
通过注入的方法拿到StringRedisTemplate操作Redis 相当于刚才的Jedis
将操作Redis的方法分成几个类别，好进一步更好的组织
大体命令基本一致
