springboot项目中操作redis，常见操作

前期准备操作见这篇末尾https://blog.csdn.net/m0_52765511/article/details/126054345

public void testString(){
        redisTemplate.opsForValue().set("city123","beijing");

        String value = (String) redisTemplate.opsForValue().get("city123");
        System.out.println(value);

        redisTemplate.opsForValue().set("key1","value1",10l, TimeUnit.SECONDS);

        Boolean aBoolean = redisTemplate.opsForValue().setIfAbsent("city1234", "nanjing");
        System.out.println(aBoolean);
    }

public void testHash(){
        HashOperations hashOperations = redisTemplate.opsForHash();

        //存值
        hashOperations.put("002","name","xiaoming");
        hashOperations.put("002","age","20");
        hashOperations.put("002","address","bj");

        //取值
        String age = (String) hashOperations.get("002", "age");
        System.out.println(age);

        //获得hash结构中的所有字段
        Set keys = hashOperations.keys("002");
        for (Object key : keys) {
            System.out.println(key);
        }

        //获得hash结构中的所有值
        List values = hashOperations.values("002");
        for (Object value : values) {
            System.out.println(value);
        }
    }

 public void testList(){
        ListOperations listOperations = redisTemplate.opsForList();

        //存值
        listOperations.leftPush("mylist","a");
        listOperations.leftPushAll("mylist","b","c","d");

        //取值
        List mylist = listOperations.range("mylist", 0, -1);
        for (String value : mylist) {
            System.out.println(value);
        }

        //获得列表长度 llen
        Long size = listOperations.size("mylist");
        int lSize = size.intValue();
        for (int i = 0; i < lSize; i++) {
            //出队列
            String element = (String) listOperations.rightPop("mylist");
            System.out.println(element);
        }
    }

 public void testSet(){
        SetOperations setOperations = redisTemplate.opsForSet();

        //存值
        setOperations.add("myset","a","b","c","a");

        //取值
        Set myset = setOperations.members("myset");
        for (String o : myset) {
            System.out.println(o);
        }

        //删除成员
        setOperations.remove("myset","a","b");

        //取值
        myset = setOperations.members("myset");
        for (String o : myset) {
            System.out.println(o);
        }

    }

public void testZset(){
        ZSetOperations zSetOperations = redisTemplate.opsForZSet();

        //存值
        zSetOperations.add("myZset","a",10.0);
        zSetOperations.add("myZset","b",11.0);
        zSetOperations.add("myZset","c",12.0);
        zSetOperations.add("myZset","a",13.0);

        //取值
        Set myZset = zSetOperations.range("myZset", 0, -1);
        for (String s : myZset) {
            System.out.println(s);
        }

        //修改分数
        zSetOperations.incrementScore("myZset","b",20.0);

        //取值
        myZset = zSetOperations.range("myZset", 0, -1);
        for (String s : myZset) {
            System.out.println(s);
        }

        //删除成员
        zSetOperations.remove("myZset","a","b");

        //取值
        myZset = zSetOperations.range("myZset", 0, -1);
        for (String s : myZset) {
            System.out.println(s);
        }
    }

 public void testCommon(){
        //获取Redis中所有的key
        Set keys = redisTemplate.keys("*");
        for (String key : keys) {
            System.out.println(key);
        }

        //判断某个key是否存在
        Boolean itcast = redisTemplate.hasKey("itcast");
        System.out.println(itcast);

        //删除指定key
        redisTemplate.delete("myZset");

        //获取指定key对应的value的数据类型
        DataType dataType = redisTemplate.type("myset");
        System.out.println(dataType.name());

    }

跟着黑马学技术