Redis-Java 交互的应用

  <!--共享Session-spring-session-data-redis分布式系统中，
         sessiong共享有很多的解决方案，其中托管到缓存中应该是最常用的方案之一-->
        <dependency>
            <groupId>org.springframework.session</groupId>
            <artifactId>spring-session-data-redis</artifactId>
        </dependency>

# default-store in spring session. it will be set in redis only outside.
spring.session.store-type=none
# REDIS (RedisProperties)
# Redis数据库索引（默认为0）
spring.redis.database=0  
# Redis服务器地址
spring.redis.host=127.0.0.1
# Redis服务器连接端口
spring.redis.port=6379  
# Redis服务器连接密码（默认为空）
spring.redis.password=
# 连接池最大连接数（使用负值表示没有限制）
spring.redis.pool.max-active=8  
# 连接池最大阻塞等待时间（使用负值表示没有限制）
spring.redis.pool.max-wait=-1  
# 连接池中的最大空闲连接
spring.redis.pool.max-idle=8  
# 连接池中的最小空闲连接
spring.redis.pool.min-idle=0  
# 连接超时时间（毫秒）
spring.redis.timeout=0  

@RestController
public class RedisController {

    @Autowired
    private RedisServiceImpl service;

    //添加
    @RequestMapping(value = "/add", method = RequestMethod.GET)
    public void test() {
        System.out.println("start.....");
        RedisModel m = new RedisModel();
        m.setName("张三");
        m.setTel("1111");
        m.setAddress("深圳1");
        m.setRedisKey("zhangsanKey01");
        service.put(m.getRedisKey(), m, -1);

        RedisModel m2 = new RedisModel();
        m2.setName("张三2");
        m2.setTel("2222");
        m2.setAddress("深圳2");
        m2.setRedisKey("zhangsanKey02");
        service.put(m2.getRedisKey(), m2, -1);

        RedisModel m3 = new RedisModel();
        m3.setName("张三3");
        m3.setTel("2222");
        m3.setAddress("深圳2");
        m3.setRedisKey("zhangsanKey03");
        service.put(m3.getRedisKey(), m3, -1);

        System.out.println("add success end...");
    }

    //查询所有对象
    @RequestMapping(value = "/getAll", method = RequestMethod.GET)
    @ResponseBody
    public Object getAll() {
        return service.getAll();
    }

    //查询所有key
    @RequestMapping(value = "/getKeys", method = RequestMethod.GET)
    @ResponseBody
    public Object getKeys() {
        return service.getKeys();
    }

    //根据key查询
    @RequestMapping(value = "/get", method = RequestMethod.GET)
    public Object get(String key) {
        RedisModel m = new RedisModel();
        m.setRedisKey(key);
        return service.get(m.getRedisKey());
    }

    //删除
    @RequestMapping(value = "/remove", method = RequestMethod.GET)
    @ResponseBody
    public void remove() {
        RedisModel m = new RedisModel();
        m.setRedisKey("zhangsanKey01");
        service.remove(m.getRedisKey());
    }

    //判断key是否存在
    @RequestMapping(value = "/isKeyExists", method = RequestMethod.GET)
    @ResponseBody
    public void isKeyExists() {
        RedisModel m = new RedisModel();
        m.setRedisKey("zhangsanKey01");
        boolean flag = service.isKeyExists(m.getRedisKey());
        System.out.println("zhangsanKey01 是否存在: "+flag);
    }

    //查询当前缓存的数量
    @RequestMapping(value = "/count", method = RequestMethod.GET)
    @ResponseBody
    public Object count() {
        return service.count();
    }

    //清空所有key
    @RequestMapping(value = "/empty", method = RequestMethod.GET)
    @ResponseBody
    public void empty() {
        service.empty();
    }

public abstract class IRedisService<T> {


    @Autowired
    protected RedisTemplate<String, Object> redisTemplate;
    @Resource
    protected HashOperations<String, String, T> hashOperations;

    /**
     * 存入redis中的key
     *
     * @return
     */
    protected abstract String getRedisKey();


    /**
     * 添加
     *
     * @param key    key
     * @param doamin 对象
     * @param expire 过期时间(单位:秒),传入 -1 时表示不设置过期时间
     */
    public void put(String key, T doamin, long expire) {
        hashOperations.put(getRedisKey(), key, doamin);
        if (expire != -1) {
            redisTemplate.expire(getRedisKey(), expire, TimeUnit.SECONDS);
        }
    }

    /**
     * 删除
     *
     * @param key 传入key的名称
     */
    public void remove(String key) {
        hashOperations.delete(getRedisKey(), key);
    }

    /**
     * 查询
     *
     * @param key 查询的key
     * @return
     */
    public T get(String key) {
        return hashOperations.get(getRedisKey(), key);
    }

    /**
     * 获取当前redis库下所有对象
     *
     * @return
     */
    public List<T> getAll() {
        return hashOperations.values(getRedisKey());
    }

    /**
     * 查询查询当前redis库下所有key
     *
     * @return
     */
    public Set<String> getKeys() {
        return hashOperations.keys(getRedisKey());
    }

    /**
     * 判断key是否存在redis中
     *
     * @param key 传入key的名称
     * @return
     */
    public boolean isKeyExists(String key) {
        return hashOperations.hasKey(getRedisKey(), key);
    }

    /**
     * 查询当前key下缓存数量
     *
     * @return
     */
    public long count() {
        return hashOperations.size(getRedisKey());
    }

    /**
     * 清空redis
     */
    public void empty() {
        Set<String> set = hashOperations.keys(getRedisKey());
        set.stream().forEach(key -> hashOperations.delete(getRedisKey(),key));
    }

@Service
public class RedisServiceImpl extends IRedisService<RedisModel> {

    private static final String REDIS_KEY = "TEST_REDIS_KEY";

    @Override
    protected String getRedisKey() {


        return this.REDIS_KEY;
    }
}

public class RedisModel implements Serializable {


    private String redisKey;//redis中的key
    private String name;//姓名
    private String tel;//电话
    private String address;//住址

    public String getRedisKey() {
        return redisKey;
    }

    public void setRedisKey(String redisKey) {
        this.redisKey = redisKey;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getTel() {
        return tel;
    }

    public void setTel(String tel) {
        this.tel = tel;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

@Configuration
public class RedisConfig  {

    /**
     * 注入 RedisConnectionFactory
     */
    @Autowired
    RedisConnectionFactory redisConnectionFactory;

    /**
     * 实例化 RedisTemplate 对象
     *
     * @return
     */
    @Bean
    public RedisTemplate<String, Object> functionDomainRedisTemplate() {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        initDomainRedisTemplate(redisTemplate, redisConnectionFactory);
        return redisTemplate;
    }

    /**
     * 设置数据存入 redis 的序列化方式
     *
     * @param redisTemplate
     * @param factory
     */
    private void initDomainRedisTemplate(RedisTemplate<String, Object> redisTemplate, RedisConnectionFactory factory) {
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(new JdkSerializationRedisSerializer());
        redisTemplate.setValueSerializer(new JdkSerializationRedisSerializer());
        redisTemplate.setConnectionFactory(factory);
    }

    /**
     * 实例化 HashOperations 对象,可以使用 Hash 类型操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public HashOperations<String, String, Object> hashOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForHash();
    }

    /**
     * 实例化 ValueOperations 对象,可以使用 String 操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public ValueOperations<String, Object> valueOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForValue();
    }

    /**
     * 实例化 ListOperations 对象,可以使用 List 操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public ListOperations<String, Object> listOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForList();
    }

    /**
     * 实例化 SetOperations 对象,可以使用 Set 操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public SetOperations<String, Object> setOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForSet();
    }

    /**
     * 实例化 ZSetOperations 对象,可以使用 ZSet 操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public ZSetOperations<String, Object> zSetOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForZSet();
    }