jedis操作hash类型命令
package org.example;import redis.clients.jedis.Jedis;import java.util.HashMap;import java.util.Map;public class TestHash {public static void main(String[] args) {Jedis jedis = new Jedis("192.168.222.2
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package org.example;
import redis.clients.jedis.Jedis;
import java.util.HashMap;
import java.util.Map;
public class TestHash {
public static void main(String[] args) {
Jedis jedis = new Jedis("192.168.222.200", 6379);
jedis.flushDB();
Map<String,String> map = new HashMap<String,String>();
map.put("key1","value1");
map.put("key2","value2");
map.put("key3","value3");
map.put("key4","value4");
//添加名称为hash(key)的hash元素
jedis.hmset("hash",map);
//向名称为hash的hash中添加key为key5,value为value5元素
jedis.hset("hash", "key5", "value5");
System.out.println("散列hash的所有键值对为:"+jedis.hgetAll("hash"));//return Map<String,String>
System.out.println("散列hash的所有键为:"+jedis.hkeys("hash"));//return Set<String>
System.out.println("散列hash的所有值为:"+jedis.hvals("hash"));//return List<String>
System.out.println("将key6保存的值加上一个整数,如果key6不存在则添加key6:"+jedis.hincrBy("hash", "key6", 6));
System.out.println("散列hash的所有键值对为:"+jedis.hgetAll("hash"));
System.out.println("将key6保存的值加上一个整数,如果key6不存在则添加key6:"+jedis.hincrBy("hash", "key6", 3));
System.out.println("散列hash的所有键值对为:"+jedis.hgetAll("hash"));
System.out.println("删除一个或者多个键值对:"+jedis.hdel("hash", "key2"));
System.out.println("散列hash的所有键值对为:"+jedis.hgetAll("hash"));
System.out.println("散列hash中键值对的个数:"+jedis.hlen("hash"));
System.out.println("判断hash中是否存在key2:"+jedis.hexists("hash","key2"));
System.out.println("判断hash中是否存在key3:"+jedis.hexists("hash","key3"));
System.out.println("获取hash中的值:"+jedis.hmget("hash","key3"));
System.out.println("获取hash中的值:"+jedis.hmget("hash","key3","key4"));
}
}
测试结果
散列hash的所有键值对为:{key1=value1, key2=value2, key5=value5, key3=value3, key4=value4}
散列hash的所有键为:[key1, key2, key5, key3, key4]
散列hash的所有值为:[value3, value1, value4, value2, value5]
将key6保存的值加上一个整数,如果key6不存在则添加key6:6
散列hash的所有键值对为:{key1=value1, key2=value2, key5=value5, key6=6, key3=value3, key4=value4}
将key6保存的值加上一个整数,如果key6不存在则添加key6:9
散列hash的所有键值对为:{key1=value1, key2=value2, key5=value5, key6=9, key3=value3, key4=value4}
删除一个或者多个键值对:1
散列hash的所有键值对为:{key1=value1, key5=value5, key6=9, key3=value3, key4=value4}
散列hash中键值对的个数:5
判断hash中是否存在key2:false
判断hash中是否存在key3:true
获取hash中的值:[value3]
获取hash中的值:[value3, value4]
Process finished with exit code 0
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