RedisTemplate常用集合使用说明-boundHashOps(七)

首先要定义一个BoundHashOperations BoundHashOperations<String, String, Object> boundHashOperations = redisTemplate.boundHashOps(“li”);

1、put(HK key, HV value)

新增元素到指定键中 boundHashOperations.put(“ww”,“i”); boundHashOperations.put(“w1”,“i1”); boundHashOperations.put(“w2”,“i2”);

2、getKey()

获取指定键中的值 //获取设置的绑定key值 System.out.println(“获取设置的绑定key值:” + boundHashOperations.getKey());

3、values()

获取map中的值jdk要求1.8及以上 //获取map中的value值 boundHashOperations.values().forEach(v -> System.out.println(“获取map中的value值” + v));

4、entries()

获取map中的键值对

//获取map键值对 boundHashOperations.entries().forEach((m,n) -> System.out.println(“获取map键值对:” + m + “-” + n));

5、get(Object member)

获取map键中的值 //获取map键的值 System.out.println(“获取map建的值:” + boundHashOperations.get(“w1”));

6、keys()

获取map的键 //获取map的键 boundHashOperations.keys().forEach(v -> System.out.println(“获取map的键:” + v));

7、multiGet(Collection keys)

根据map键批量获取map值 //根据map键批量获取map值 List list = new ArrayList<>(Arrays.asList(“ww”,“w1”)); boundHashOperations.multiGet(list).forEach(v -> System.out.println(“根据map键批量获取map值:” + v));

8、putAll(Map<? extends HK,? extends HV> m)

批量添加键值对 //批量添加键值对 Map map = new HashMap<>(); map.put(“m1”,“n1”); map.put(“m2”,“n2”); boundHashOperations.putAll(map); boundHashOperations.entries().forEach((m,n) -> System.out.println(“批量添加键值对:” + m + “-” + n));

9、increment(HK key, long delta)

自增长map键的值 //自增长map键的值 boundHashOperations.increment(“c”,1); System.out.println(“自增长map键的值:” + boundHashOperations.get(“c”));

10、putIfAbsent(HK key, HV value)

添加不存在的map键 //如果map键不存在，则新增，存在，则不变 boundHashOperations.putIfAbsent(“m2”,“n2-1”); boundHashOperations.putIfAbsent(“m3”,“n3”); boundHashOperations.entries().forEach((m,n) -> System.out.println(“新增不存在的键值对:” + m + “-” + n));

11、size()

获取特定键对应的map大小 //查看绑定建的map大小 System.out.println(“查看绑定建的map大小:” + boundHashOperations.size());

12、scan(ScanOptions options)

扫描特定键所有值 //遍历绑定键获取所有值 Cursor<Map.Entry<String, Object>> cursor = boundHashOperations.scan(ScanOptions.NONE); while (cursor.hasNext()){ Map.Entry<String, Object> entry = cursor.next(); System.out.println(“遍历绑定键获取所有值:” + entry.getKey() + “—” + entry.getValue()); }

13、delete(Object… keys)

批量删除map值 long delSize = boundHashOperations.delete(“m3”,“m2”); System.out.println(“删除的键的个数:” + delSize); boundHashOperations.entries().forEach((m,n) -> System.out.println(“删除后剩余map键值对:” + m + “-” + n));