redis常用api操作有哪些
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//设置键值对 //set key value [EX seconds] [PX milliseconds] [NX|XX] //获取值 //get key //删除键 //del key //清空数据库 //flushdb //获取list值 //lrange key start stop //map类型 //hget key field //hgetall key //sortedset类型 package hgs.redislearn; import java.io.IOException; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set; import org.codehaus.jackson.JsonGenerationException; import org.codehaus.jackson.map.JsonMappingException; import org.codehaus.jackson.map.ObjectMapper; import org.junit.After; import org.junit.Before; import org.junit.Test; import redis.clients.jedis.BinaryClient.LIST_POSITION; import redis.clients.jedis.Jedis; /** * *Description:Redis
* @author guangshihao * @date 2018年9月28日 * */ public class RedisMainTest { Jedis jedis = null; @Before public void getConnect() { jedis = new Jedis("192.168.6.129", 6379); } @Test public void sysoutConnect() { System.out.println(jedis.ping()); } @After public void finaly() { jedis.close(); } //测试放入String类型的键值对,并进行获取删除修改等操作 @Test public void TestStringKeys() { jedis.set("hgs.name", "haoguangshi."); String name = jedis.get("hgs.name"); System.out.println(name); long affect = jedis.del("hgs.name"); System.out.println(affect); } @Test public void TestListKeys() { //从左边插入 jedis.lpush("test_list", "1","2","100"); //从右边插入 jedis.rpush("test_list", "100","2","1","this"); //获取list Listlis = jedis.lrange("test_list", 0, -1); System.out.println(lis); //jedis.lpop lpush rpop rpush //在this出现的第一个位置的前面插入is jedis.linsert("test_list", LIST_POSITION.BEFORE, "this", "is"); } //map类型操作 @Test public void TestMapKeys() throws JsonGenerationException, JsonMappingException, IOException { /* Person p = new Person (); p.setName("hgs"); p.setAge(26); p.setWeight(65); Person p1 = new Person (); p1.setName("wd"); p1.setAge(23); p1.setWeight(60); ObjectMapper mapper = new ObjectMapper(); String sp = mapper.writer().writeValueAsString(p); String sp1 = mapper.writer().writeValueAsString(p1); Map ps = new HashMap (); ps.put("hgs", sp); ps.put("wd", sp1);*/ jedis.hset("pseron:hgs", "name", "hgs"); jedis.hset("pseron:hgs", "age", "24"); jedis.hset("pseron:hgs", "weigth", "65kg"); jedis.hset("pseron:wd", "name", "wd"); jedis.hset("pseron:wd", "age", "24"); jedis.hset("pseron:wd", "weight", "60kg"); } @Test public void loopMapKeys() { //遍历一个map Map wd = jedis.hgetAll("pseron:wd"); for(String type : wd.keySet()) { System.out.println(type+" : " +wd.get(type)); } //原子操作自增2 jedis.hincrBy("pseron:hgs\"", "age", 2L); } @Test public void delMapKeys() { //删除属性 jedis.hdel("pseron:wd", "weight"); //打印集合的长度 System.out.println(jedis.hlen("pseron:hgs")); } //set类型数据结构,添加数据 @Test public void setKeysTest() { String[] tmp = new String[] { "tianmao","dingding","alimama","zhifubao","feizhu" }; jedis.sadd("apps", tmp); String[] tmp1 = new String[] { "tianmao","dingdi","alima","zhifubao","feizhu" }; jedis.sadd("apps", tmp); jedis.sadd("apps1", tmp1); } //遍历 @Test public void scanSetKeys() { //判断某个记录是否存在 System.out.println(jedis.sismember("apps", "tianmao")); System.out.println(jedis.scard("apps")); //计算交集 Set sets = jedis.sinter("apps","apps1"); for(String s : sets) { System.out.println(s); } //并集 Set sets1 = jedis.sunion("apps","apps1"); for(String s : sets1) { System.out.println(s); } System.out.println(); //差集 Set sets2 = jedis.sdiff("apps","apps1"); for(String s : sets2) { System.out.println(s); } //遍历 Set sets3 = jedis.smembers("apps"); for(String s : sets3) { System.out.println(s); } } //SortedSet数据类型 //存数据 @Test public void sortedSetAddTest() { Map scoremem = new HashMap (); scoremem.put("wd", (double) 88); scoremem.put("cm", (double) 87); scoremem.put("zz", (double) 90); scoremem.put("wzf", (double) 70); scoremem.put("xzh", (double) 66); scoremem.put("hgs", (double) 55); scoremem.put("hjh", (double) 88); scoremem.put("shk", (double) 100); jedis.zadd("roommeets_score", scoremem); } //sortedSet 遍历 @Test public void scanSortedSet() { //正序遍历 Set members = jedis.zrange("roommeets_score", 0, -1); for(String mem : members) { System.out.println("name:"+mem +","+" score:" +jedis.zscore("roommeets_score", mem)+","+" rank:"+(jedis.zrank("roommeets_score", mem)+1)); } System.out.println(); //正序遍历 Set members1 = jedis.zrevrange("roommeets_score", 0, -1); for(String mem : members1) { System.out.println("name:"+mem +","+" score:" +jedis.zscore("roommeets_score", mem)+","+" rank:"+(jedis.zrevrank("roommeets_score", mem)+1L)); } } } class Person{ String name ; int age; double weight; public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public double getWeight() { return weight; } public void setWeight(double weight) { this.weight = weight; } @Override public String toString() { return "Person [name=" + name + ", age=" + age + ", weight=" + weight + "]"; } }
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