【Redis】Java Spring操作redis

引入Redis依赖

StringRedisTemplate

此处RedisTemplate是把这些操作Redis的方法，分成了几个类别，分门别类的来组织的。
此处提供的一些接口风格，和原生的Redis命令就有一定的差异。

使用String

 @GetMapping("/testString")
    @ResponseBody
    public String testString() {
        redisTemplate.execute((RedisConnection connection) -> {
            // execute 要求回调方法中必须 return 语句，返回个东西
            connection.flushAll();
            return null;
        });
        redisTemplate.opsForValue().set("key", "111");
        redisTemplate.opsForValue().set("key2", "222");
        redisTemplate.opsForValue().set("key3", "333");

        String value = redisTemplate.opsForValue().get("key");
        System.out.println("value:" + value);

        return "OK";
    }

使用List

@GetMapping("/testList")
    @ResponseBody
    public String testList() {
        // 先清除之前的数据.
        redisTemplate.execute((RedisConnection connection) -> {
            // execute 要求回调方法中必须 return 语句，返回个东西
            connection.flushAll();
            return null;
        });
        redisTemplate.opsForList().leftPush("key", "111");
        redisTemplate.opsForList().leftPush("key", "222");
        redisTemplate.opsForList().leftPush("key", "333");

        String value = redisTemplate.opsForList().rightPop("key");
        System.out.println("value:" + value);
        value = redisTemplate.opsForList().rightPop("key");
        System.out.println("value:" + value);
        value = redisTemplate.opsForList().rightPop("key");
        System.out.println("value:" + value);

        return "OK";
    }

使用Set

 @GetMapping("/testSet")
    @ResponseBody
    public String testSet() {
        redisTemplate.execute((RedisConnection connection) -> {
            // execute 要求回调方法中必须 return 语句，返回个东西
            connection.flushAll();
            return null;
        });

        redisTemplate.opsForSet().add("key", "111", "222", "333");
        Set<String> result = redisTemplate.opsForSet().members("key");
        System.out.println("result:" + result);

        Boolean exists = redisTemplate.opsForSet().isMember("key", "111");
        System.out.println("exists:" + exists);

        Long count = redisTemplate.opsForSet().size("key");
        System.out.println("count:" + count);

        redisTemplate.opsForSet().remove("key", "111", "222");
        result = redisTemplate.opsForSet().members("key");
        System.out.println("result:" + result);

        return "OK";
    }

使用hash

@GetMapping("/testHash")
    @ResponseBody
    public String testHash() {
        redisTemplate.execute((RedisConnection connection) -> {
            // execute 要求回调方法中必须 return 语句，返回个东西
            connection.flushAll();
            return null;
        });

        redisTemplate.opsForHash().put("key", "f1", "111");
        redisTemplate.opsForHash().put("key", "f2", "222");
        redisTemplate.opsForHash().put("key", "f3", "333");

        String value = (String) redisTemplate.opsForHash().get("key", "f1");
        System.out.println("value:" + value);

        Boolean exists = redisTemplate.opsForHash().hasKey("key", "f1");
        System.out.println("exists:" + exists);

        redisTemplate.opsForHash().delete("key", "f1", "f2");

        Long size = redisTemplate.opsForHash().size("key");
        System.out.println("size:" + size);

        value = (String) redisTemplate.opsForHash().get("key", "f1");
        System.out.println("value:" + value);

        return "OK";
    }

使用zset

@GetMapping("/testZSet")
    @ResponseBody
    public String testZSet() {
        redisTemplate.execute((RedisConnection connection) -> {
            // execute 要求回调方法中必须 return 语句，返回个东西
            connection.flushAll();
            return null;
        });

        redisTemplate.opsForZSet().add("key", "zhangsan", 50.0);
        redisTemplate.opsForZSet().add("key", "lisi", 80.0);
        redisTemplate.opsForZSet().add("key", "wangwu", 100.0);

        Set<String> members = redisTemplate.opsForZSet().range("key", 0, -1);
        System.out.println("members:" + members);

        Set<ZSetOperations.TypedTuple<String>> membersWithScore = redisTemplate.opsForZSet().rangeWithScores("key", 0, -1);
        System.out.println("membersWithScore:" + membersWithScore);

        Double score = redisTemplate.opsForZSet().score("key", "zhangsan");
        System.out.println("score:" + score);

        redisTemplate.opsForZSet().remove("key", "zhangsan");

        Long size = redisTemplate.opsForZSet().size("key");
        System.out.println("size:" + size);

        Long rank = redisTemplate.opsForZSet().rank("key", "lisi");
        System.out.println("rank:" + rank);

        return "OK";
    }