Java與SpringBoot對redis的使用方式

<dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <!--隻能在測試類中使用-->
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>3.6.0</version>
        </dependency>

public class TestJedis {
    @Test
    public void test01(){
        //連接redis--必須保證你的redis服務運行遠程連接
        //該對象把每個redis命令封裝成對應的方法
        //註意端口號
        //xshell中的redis要運行起來，註意防火墻釋放端口號，註意配置文件的修改
        Jedis jedis=new Jedis("192.168.1.16",6379);
        //對於字符串操作的命令
        String set = jedis.set("k1", "v1");
        System.out.println(set);
        String set1 = jedis.set("k2", "v2");
        System.out.println(set1);
        String set2 = jedis.set("k3", "v3");
        System.out.println(set2);

        //對於hash的操作
        jedis.hset("k4","name","小花");
        Long hset = jedis.hset("k4", "age", "18");
        System.out.println(hset);

       Map<String ,String> map=new HashMap<>();
        map.put("name","小明");
        map.put("age","20");
        Long k = jedis.hset("k5", map);
        System.out.println(k);
        jedis.close();
    }
}

 @Test
    public void test02(){
        //創建連接池的配置類
        JedisPoolConfig jedisPoolConfig=new JedisPoolConfig();
        jedisPoolConfig.setMaxIdle(20);
        jedisPoolConfig.setMinIdle(5);
        jedisPoolConfig.setMaxWait(Duration.ofMillis(3000));
        JedisPool jedisPool=new JedisPool(jedisPoolConfig,"192.168.1.16",6379);
        long start = System.currentTimeMillis();

        for (int i = 0; i < 1000; i++) {
            //從jedis連接池獲取資源
            Jedis jedis=jedisPool.getResource();
            String ping = jedis.ping();
            jedis.close();//是否關閉池子
        }
        long end=System.currentTimeMillis();
        //是為瞭比較使用池子還是不使用快，結論是使用池子快
        System.out.println("總耗時："+(end-start));
    }

@Test
    public void test03(){
      Set<HostAndPort> nodes=new HashSet<>();
      nodes.add(new HostAndPort("192.168.227.175",6001));
      nodes.add(new HostAndPort("192.168.227.175",6002));
      nodes.add(new HostAndPort("192.168.227.175",6003));
      nodes.add(new HostAndPort("192.168.227.175",6004));
      nodes.add(new HostAndPort("192.168.227.175",6005));
      nodes.add(new HostAndPort("192.168.227.175",6006));
        JedisCluster jedisCluster=new JedisCluster(nodes);
      jedisCluster.set("k6", "小老虎和小兔子");
        jedisCluster.close();
    }

   <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
       </dependency>

 @Autowired
 private StringRedisTemplate redisTemplate;

@Autowired
    private StringRedisTemplate stringRedisTemplate;
 @Test
    public void test01(){
        //對hash類型的操作
        HashOperations<String, Object, Object> forHash = stringRedisTemplate.opsForHash();
        forHash.put("k1","name","張三");
        forHash.put("k1","age","15");
        Map<String,String> map=new HashMap<>();
        map.put("name","李四");
        map.put("age","25");
        forHash.putAll("k36",map);
 
        Object o = forHash.get("k1", "name");
        System.out.println(o);
 
        Set<Object> k1 = forHash.keys("k1");
        System.out.println(k1);
 
        List<Object> k11 = forHash.values("k1");
        System.out.println(k11);
 
        //獲取k1對於的所有的field和value
        Map<Object, Object> k12 = forHash.entries("k1");
        System.out.println(k12);
    }
    @Test
    void contextLoads() {
        //刪除指定的key
       // stringRedisTemplate.delete("k");
        //查看所有的key
        //stringRedisTemplate.keys("k");
        //是否存在指定的key
        //stringRedisTemplate.hasKey("k");
        //對字符串數據類型的操作ValueOperations
        ValueOperations<String, String> forValue = stringRedisTemplate.opsForValue();
        //存儲字符串類型--key value long uint  setex()
        forValue.set("k1","張三",30, TimeUnit.SECONDS);
        //等價於setnx 存入成功返回true ,失敗返回false
        Boolean absent = forValue.setIfAbsent("k11", "李四", 30, TimeUnit.SECONDS);
        System.out.println(absent);
        //append拼接
        Integer append = forValue.append("k11", "真好看");
        String k11 = forValue.get("k11");
        System.out.println(k11);
 
    }

@SpringBootTest
class SbredisApplicationTests02 {
    //當你存儲的value類型為對象類型使用redisTemplate
    //存儲的value類型為字符串。StringRedisTemplate 驗證碼
    @Autowired
    private RedisTemplate redisTemplate;
 
    @Test
    public void test01(){
        //必須認為指定序列化方式
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<Object>(Object.class));
 
        //對String類型操作類
        ValueOperations forValue = redisTemplate.opsForValue();
        //redis中key和value都變成瞭亂碼
        //key和value都沒有指定序列化方式，默認采用jdk的序列化方式
        forValue.set("k1","張三");
 
        //value默認采用jdk，類必須實現序列化接口
        forValue.set("k44",new User(1,"haha",12));
    }
}

@Configuration
public class RedisConfig {
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        template.setConnectionFactory(factory);
        //key序列化方式
        template.setKeySerializer(redisSerializer);
        //value序列化
        template.setValueSerializer(jackson2JsonRedisSerializer);
        //value hashmap序列化  filed value
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        template.setHashKeySerializer(redisSerializer);
        return template;
    }
}