Redis学习（三）-Java实现基于Jedis+Spring的通用工具类

Spring整合Jedis

Maven引入

  <!--Spring Data Redis-->        <dependency>            <groupId>org.springframework.data</groupId>            <artifactId>spring-data-redis</artifactId>            <version>${spring-data-redis.version}</version>        </dependency>        <dependency>            <groupId>redis.clients</groupId>            <artifactId>jedis</artifactId>            <version>${jedis.version}</version>        </dependency>

Java配置类（也可以用XML）

@Configuration@EnableCachingpublic class RedisCacheConfig extends CachingConfigurerSupport{    @Value("${redis_host}")    String redisHost;    @Value("${redis_port}")    Integer redisPort;    @Value("${redis_keynum}")    Integer redisKeynum;    Logger logger = LoggerFactory.getLogger(this.getClass().getSimpleName());    public RedisCacheConfig()    {        System.out.println("Java配置类初始化");    }    @Bean    public JedisPoolConfig jedisPoolConfig()    {        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();        jedisPoolConfig.setMaxWaitMillis(60 * 1000);        jedisPoolConfig.setMaxTotal(1000);        jedisPoolConfig.setMaxIdle(100);        return jedisPoolConfig;    }    @Bean    public JedisPool jedisPool(JedisPoolConfig jedisPoolConfig)    {        JedisPool jedisPool = new JedisPool(jedisPoolConfig,redisHost,redisPort,999999999);        return jedisPool;    }    @Bean    public Jedis jedis(JedisPool jedisPool)    {        Jedis jedis = jedisPool.getResource();        jedis.select(redisKeynum);        return jedis;    }    @Bean    public JedisConnectionFactory redisConnectionFactory()    {        JedisConnectionFactory factory = new JedisConnectionFactory();        System.out.println(redisHost + ":" + redisPort + "-" + redisKeynum);        logger.info(redisHost + ":" + redisPort + "-" + redisKeynum);        factory.setHostName(redisHost);        factory.setPort(redisPort);        factory.setDatabase(redisKeynum);        return factory;    }    @Bean    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory redisConnectionFactory)    {        RedisTemplate<String,String> template = new RedisTemplate<>();        template.setConnectionFactory(redisConnectionFactory);        return template;    }    @Bean    public CacheManager cacheManager(RedisTemplate redisTemplate)    {        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);        cacheManager.setDefaultExpiration(0);;        return cacheManager;    }}

封装Jedis工具类

/** * Jedis工具类 * * @author NikoBelic * @create 21/01/2017 13:41 */@Componentpublic class JedisUtils{    @Autowired    Jedis jedis;    private JedisUtils()    {    }    // ********************** String Oprations *************************    public String set(String key, String val)    {        return jedis.set(key, val);    }    public String get(String key)    {        return jedis.get(key);    }    public Long incrBy(String key, Integer increment)    {        return jedis.incrBy(key, increment);    }    public Long decrBy(String key, Integer decrement)    {        return jedis.incrBy(key, decrement);    }    // ********************** List Oprations *************************    /**     * 从左侧推入元素     * @Author NikoBelic     * @Date 21/01/2017 17:47     */    public <T extends Serializable> Long lPushObj(String key, T... obj)    {        byte[] serializedObj;        long count = 0;        for (T t : obj)        {            serializedObj = SerializationUtil.serialize(t);            jedis.lpush(key.getBytes(),serializedObj);            count++;        }        return count;    }    /**     * 从列表左侧弹出数据     * @Author NikoBelic     * @Date 21/01/2017 17:47     */    public <T extends Serializable> T lPop(String key)    {        byte[] obj = jedis.lpop(key.getBytes());        return SerializationUtil.deserialize(obj);    }    /**     * 获取指定范围内的列表元素     * @Author NikoBelic     * @Date 21/01/2017 17:47     */    public <T extends Serializable> List<T> lRange(String key,int from,int to)    {        List<byte[]> byteList = jedis.lrange(key.getBytes(), from, to);        List<T> objList = null;        if (byteList.size() > 0)        {            objList = new ArrayList<T>();            for (byte[] obj : byteList)            {                objList.add(SerializationUtil.deserialize(obj));            }        }        return objList;    }    // ********************** Set Oprations *************************    /**     * 向集合中添加元素     * @Author NikoBelic     * @Date 21/01/2017 18:06     */    public <T extends Serializable> Long sAdd(String key, T... obj)    {        byte[] serializedObj;        long count = 0;        for (T t : obj)        {            serializedObj = SerializationUtil.serialize(t);            jedis.sadd(key.getBytes(),serializedObj);            count++;        }        return count;    }    /**     * 返回集合中的所有元素     * @Author NikoBelic     * @Date 21/01/2017 18:06     */    public <T extends Serializable> Set<T> sMembers(String key)    {        Set<byte[]> byteList = jedis.smembers(key.getBytes());        Set<T> objList = null;        if (byteList.size() > 0)        {            objList = new HashSet<T>();            for (byte[] obj : byteList)            {                objList.add(SerializationUtil.deserialize(obj));            }        }        return objList;    }    /**     * 判断对象是否存在于集合中     * 注意:判断标准是列化后的字符串是否相同,即时不同的对象但序列化结果相同也将返回true     * @Author NikoBelic     * @Date 21/01/2017 18:04     */    public <T extends Serializable> Boolean sIsMember(String key, T obj)    {        byte[] serializedObj = SerializationUtil.serialize(obj);        return jedis.sismember(key.getBytes(),serializedObj);    }    // ********************** Hash Oprations *************************    /**     * 向哈希表存储键值对数据     * @Author NikoBelic     * @Date 21/01/2017 18:41     */    public <T extends Serializable> String hmSet(String key, Map<String,T> map)    {        Map<byte[],byte[]> objMap;        if (map.size() > 0)        {            objMap = new HashMap<>();            for (Map.Entry<String, T> entry : map.entrySet())            {                objMap.put(entry.getKey().getBytes(), SerializationUtil.serialize(entry.getValue()));            }            return jedis.hmset(key.getBytes(), objMap);        }        return null;    }    /**     * 从Hash中取出键值对数据     * @Author NikoBelic     * @Date 21/01/2017 18:41     */    public <T extends Serializable> List<T> hmGet(String key, String... fields)    {        List<T> resObjs = new ArrayList<T>();        for (String field : fields)        {            resObjs.add(SerializationUtil.deserialize(jedis.hget(key.getBytes(),field.getBytes())));        }        return resObjs;    }    // ********************** ZSet Oprations *************************}

测试方法

@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = {"classpath*:spring/applicationContext*.xml"})public class TestRedis{    @Autowired    private JedisUtils jedisUtils;    @Test    public void testString()    {        System.out.println(jedisUtils.set("address", "ShangHai"));        System.out.println(jedisUtils.get("address"));        try        {            System.out.println(jedisUtils.incrBy("address", 100));        } catch (Exception e)        {            System.out.println(e.getMessage() + "自增操作异常");        }        jedisUtils.set("myint", "10");        System.out.println(jedisUtils.incrBy("myint", 100));    }    @Test    public void testList()    {        System.out.println(jedisUtils.lPushObj("strList", "NikoBelic","Tom","Helen"));        //System.out.println((String) jedisUtils.lPop("strList"));        //System.out.println((String) jedisUtils.lPop("strList"));        List<String> strList = jedisUtils.lRange("strList", 0, -1);        for (String s : strList)        {            System.out.println(s);        }        //System.out.println(jedisUtils.lPushObj("objList", new User("NikoBelic", 18), new User("Tom", 15), new User("Marry", 20)));        //System.out.println((User) jedisUtils.lPop("objList"));        //System.out.println((User) jedisUtils.lPop("objList"));        //List<User> objList = jedisUtils.lRange("objList", 0, -1);        //for (User user : objList)        //{        //    System.out.println(user);        //}    }    @Test    public void testSet()    {        //System.out.println(jedisUtils.sAdd("strSet", "NikoBelic","Tom","Helen"));        //Set<String> strList = jedisUtils.sMembers("strSet");        //for (String s : strList)        //{        //    System.out.println(s);        //}        //System.out.println(jedisUtils.sAdd("objSet", new User("NikoBelic", 18), new User("Tom", 15), new User("Marry", 20)));        //Set<User> objList = jedisUtils.sMembers("objSet");        //for (User user : objList)        //{        //    System.out.println(user);        //}        //User myObj = new User("Exist Test",20);        //jedisUtils.sAdd("objSet",myObj);        System.out.println(jedisUtils.sIsMember("objSet",new User("ExistTest",20)));    }    @Test    public void testHash()    {        //Map<String,String> map = new HashMap<>();        //map.put("A","1");        //map.put("B","2");        //map.put("C","3");        //System.out.println(jedisUtils.hmSet("strHash",map));        //List<String> strs = jedisUtils.hmGet("strHash", "A", "B", "C");        //for (String str : strs)        //{        //    System.out.println(str);        //}        Map<String,User> map = new HashMap<>();        map.put("user1",new User("Niko",18));        map.put("user2",new User("Tom",20));        map.put("user3",new User("Marry",15));        System.out.println(jedisUtils.hmSet("objHash",map));        List<User> userList = jedisUtils.hmGet("objHash", "user1", "user2", "user3");        for (User user : userList)        {            System.out.println(user);        }    }}class User implements Serializable{    private String name;    private int age;    public User(String name, int age)    {        this.name = name;        this.age = age;    }    @Override    public String toString() {        return "User{" +                "name='" + name + '\'' +                ", age='" + age + '\'' +                '}';    }}