java操作Redis，增，删，查

    

    /**
     * 保存用户基础信息 --> Redis
     * @param user
     */
    public void saveUserInfoToRedis(User user) {
        String userId = user.getUserId();
        redisTemplate.opsForValue().set(Config.getLoginUserKey(userId), JSONObject.toJSONString(user));
        redisTemplate.expire(Config.getLoginUserKey(userId), Config.USER_INFO_TIMEOUT, TimeUnit.MILLISECONDS);
        
    }
    
    /**
     * 保存用户登录信息 --> Redis
     * @param userId
     * @param sessionId
     */
    public void saveUserLoginInfoToRedis(String userId,String sessionId) {
    	JSONObject userLoginInfo = new JSONObject();
    	userLoginInfo.put("userId", userId);
        redisTemplate.opsForValue().set(Config.getLoginSessionKey(sessionId), userLoginInfo.toJSONString());
        redisTemplate.expire(Config.getLoginSessionKey(sessionId), Config.LOGIN_INFO_TIMEOUT, TimeUnit.MILLISECONDS);
    }
    

配置类

package com.video.base.utils;

public class Config {
	
    /**
     * 线程名规范化
     */
    public static String THREAD_NAME_FORMAT = "video-download-at-%d";
	
	public static final String LOGIN_USER_SESSION = "login:user:session";
	public static final String LOGIN_USER_INFO = "login:user:info";
	
	public static final String REGIST_SESSION_VCODE = "regist:session:vcode";
	
	/**
	 * 登录信息过期时间，与session保持一致为30分钟
	 */
	public static final Long LOGIN_INFO_TIMEOUT = 60*30*1000L;
	
	/**
	 * 用户信息保存在session中，为7天（一周）
	 */
	public static final Long USER_INFO_TIMEOUT = 7*24*3600*1000L;

	public static String getLoginSessionKey(String sessionId) {
		
        return LOGIN_USER_SESSION + ":" + sessionId;
    }
	
	public static String getLoginUserKey(String userId) {
		
        return LOGIN_USER_INFO + ":" + userId;
    }
	
	public static String getRegistSessionVCodeKey(String sessionId,String phone) {
		
        return REGIST_SESSION_VCODE + ":" + sessionId + ":" + phone;
    }
}

查询

    /**
     * 从Redis中获取用户基本信息
     * @param userId
     * @return
     */
    @Override
    public User getUserInfo(String userId) {
        Object obj = redisTemplate.opsForValue().get(Config.getLoginUserKey(userId));
        if(obj == null) return null;
        return JSONObject.parseObject(Objects.toString(obj), User.class);
    }

删除

	/**
     * 删除用户登录信息
     * @param session
     */
    public void deleteLoginInfo(HttpSession session) {
        String loginInfoHKey = Config.getLoginSessionKey(session.getId());
        if(redisTemplate.hasKey(loginInfoHKey)) {
            redisTemplate.delete(loginInfoHKey);
            redisTemplate.delete(Config.getLoginSessionKey(session.getId()));
        }
    }
    
	
	
	/**
     * 删除用户基本信息
     * @param userId
     */
    public void deleteUserInfo(String userId) {
        String userInfoHKey = Config.getLoginUserKey(userId);
        if(redisTemplate.hasKey(userInfoHKey)) {
            redisTemplate.delete(userInfoHKey);
            redisTemplate.delete(Config.getLoginUserKey(userId));
        }
    }
    
    /**
     * 批量删除缓存
     * @param userIdList
     */
    public void deleteTaskInfo(Collection<String> userIdList) {
        if (!CollectionUtils.isEmpty(userIdList)) {
            List<String> userInfoHKeys = new ArrayList<>();
            //List<String> taskFileHKeys = new ArrayList<>();
            userIdList.parallelStream().forEach(userId -> {
                String userInfoHKey = Config.getLoginUserKey(userId);
                //String taskFileHKey = Config.getTaskFileHKey(userId);
                userInfoHKeys.add(userInfoHKey);
                //taskFileHKeys.add(taskFileHKey);
            });
            redisTemplate.delete(userInfoHKeys);
            //redisTemplate.delete(taskFileHKeys);
        }
    }

	导入jar包中的StringRedisTemplate 

    @Autowired
	private StringRedisTemplate redisTemplate;

导入jar包
spring-data-redis-1.6.2.RELEASE.jar