SpringBoot整合Redis

• • 1、在properties文件中配置redis
  • 2、编写配置类 RedisConfig
  • 3、测试

//Windows下
# RedisProperties
spring.redis.database=11
spring.redis.host=localhost
spring.redis.port=6379

@Configuration
public class RedisConfig {
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory factory){
        RedisTemplate template = new RedisTemplate();
        template.setConnectionFactory(factory);

        // 设置key的序列化方式
        template.setKeySerializer(RedisSerializer.string());
        // 设置value的序列化方式
        template.setValueSerializer(RedisSerializer.json());
        // 设置hash的key的序列化方式
        template.setHashKeySerializer(RedisSerializer.string());
        // 设置hash的value的序列化方式
        template.setHashValueSerializer(RedisSerializer.json());

        template.afterPropertiesSet();
        return template;
    }
}

@RunWith(SpringRunner.class)
@SpringBootTest
@ContextConfiguration(classes = CommunityApplication.class)
public class RedisTest {

    @Autowired
    private RedisTemplate redisTemplate;

	@Test
    public void testStrings(){
        String redisKey = "test:count";

        redisTemplate.opsForValue().set(redisKey, 1);

        System.out.println(redisTemplate.opsForValue().get(redisKey));
        System.out.println(redisTemplate.opsForValue().increment(redisKey));
    }

    //hash
    @Test
    public void testHashes() {
        String redisKey = "test:user";

        redisTemplate.opsForHash().put(redisKey, "id", 1);
        redisTemplate.opsForHash().put(redisKey, "username", "zhangsan");

        System.out.println(redisTemplate.opsForHash().get(redisKey, "id"));
        System.out.println(redisTemplate.opsForHash().get(redisKey, "username"));
    }

    //list
    @Test
    public void testLists() {
        String redisKey = "test:ids";

        redisTemplate.opsForList().leftPush(redisKey, 101);
        redisTemplate.opsForList().leftPush(redisKey, 102);
        redisTemplate.opsForList().leftPush(redisKey, 103);

        System.out.println(redisTemplate.opsForList().size(redisKey));
        System.out.println(redisTemplate.opsForList().index(redisKey, 0));
        System.out.println(redisTemplate.opsForList().range(redisKey, 0, 2));

        System.out.println(redisTemplate.opsForList().leftPop(redisKey));
        System.out.println(redisTemplate.opsForList().leftPop(redisKey));
        System.out.println(redisTemplate.opsForList().leftPop(redisKey));
    }

    //set
    @Test
    public void testSets() {
        String redisKey = "test:teachers";

        redisTemplate.opsForSet().add(redisKey, "刘备", "关羽", "张飞", "赵云", "诸葛亮");

        System.out.println(redisTemplate.opsForSet().size(redisKey));
        System.out.println(redisTemplate.opsForSet().pop(redisKey));
        System.out.println(redisTemplate.opsForSet().members(redisKey));
    }

    //sortedSet
    @Test
    public void testSortedSets() {
        String redisKey = "test:students";

        redisTemplate.opsForZSet().add(redisKey, "唐僧", 80);
        redisTemplate.opsForZSet().add(redisKey, "悟空", 90);
        redisTemplate.opsForZSet().add(redisKey, "八戒", 50);
        redisTemplate.opsForZSet().add(redisKey, "沙僧", 70);
        redisTemplate.opsForZSet().add(redisKey, "白龙马", 60);

        System.out.println(redisTemplate.opsForZSet().zCard(redisKey));  //5
        System.out.println(redisTemplate.opsForZSet().score(redisKey, "八戒"));  //50.0
        System.out.println(redisTemplate.opsForZSet().reverseRank(redisKey, "八戒"));  //八戒的排名，由大到小排序，返回的是索引
        //4
        System.out.println(redisTemplate.opsForZSet().reverseRange(redisKey, 0, 2));
        //[悟空，唐僧，沙僧]  前三名从大到小
    }

    @Test
    public void testKeys() {
        redisTemplate.delete("test:user");    //删除key

        System.out.println(redisTemplate.hasKey("test:user"));  //判断key是否存在

        redisTemplate.expire("test:students", 10, TimeUnit.SECONDS);  //设置key的过期时间
    }

    // 批量发送命令,节约网络开销.
    //多次访问同一个key
    @Test
    public void testBoundOperations() {
        String redisKey = "test:count";
        BoundValueOperations operations = redisTemplate.boundValueOps(redisKey);
        //redisTemplate.opsForValue().increment(redisKey) 不需要绑定key了
        operations.increment();
        operations.increment();
        operations.increment();
        operations.increment();
        operations.increment();
        System.out.println(operations.get());
    }
    
    // 编程式事务
    @Test
    public void testTransaction() {
        Object result = redisTemplate.execute(new SessionCallback() {
            @Override
            public Object execute(RedisOperations redisOperations) throws DataAccessException {
                String redisKey = "text:tx";

                // 启用事务
                redisOperations.multi();
                redisOperations.opsForSet().add(redisKey, "zhangsan");
                redisOperations.opsForSet().add(redisKey, "lisi");
                redisOperations.opsForSet().add(redisKey, "wangwu");

                System.out.println(redisOperations.opsForSet().members(redisKey));

                // 提交事务
                return redisOperations.exec();
            }
        });
        System.out.println(result);
    }
}