redis 下载及使用

redis 官网下载地址:http://redis.io/

E:\工作软件\新建文件夹\redis64-2.8.19  redis-server.exe 执行该命令

当前已启动  端口号:6379

redis.conf 该配制文件中配置登陆密码

在次下面配置################################## SECURITY ###################################

# Require clients to issue AUTH <PASSWORD> before processing any other
# commands. This might be useful in environments in which you do not trust
# others with access to the host running redis-server.
#
# This should stay commented out for backward compatibility and because most
# people do not need auth (e.g. they run their own servers).
#
# Warning: since Redis is pretty fast an outside user can try up to
# 150k passwords per second against a good box. This means that you should
# use a very strong password otherwise it will be very easy to break.
#
requirepass "123456"

redis 可视化工具RedisStudio下载地址 :https://github.com/cinience/RedisStudio/releases  下载之后直接打开

填写完毕之后直接save就可以了

在此下面查找数据

redis java的增删改查：

/**
 * 根据key删除value
 * @param key
 */
public void remove(String key){
    if(key == null || "".equals(key)){
        throw new ServiceException("key值不能为空！");
    }
    JedisPool pool = null;
    Jedis jedis = null;
    try{
        pool = getPool();
        jedis = pool.getResource();
        if(jedis.exists(key)){
            jedis.del(key);
        }
    }catch (Exception e){
        e.printStackTrace();
    }finally {
        if(jedis != null){
            jedis.close();
        }
    }
}

/**
 * 根据key读取value值，可根据传入类型进行转型
 * @param key
 * @param clazz
 * @param <T>
 * @return
 */
public <T> T getData(String key, Class<T> clazz){
    if(key == null || "".equals(key)){
        throw new ServiceException("key值不能为空！");
    }
    Object result = null;
    JedisPool pool = null;
    Jedis jedis = null;
    try{
        pool = getPool();
        jedis = pool.getResource();
        result = jedis.get(key);
    }catch (Exception e){
        e.printStackTrace();
    }finally {
        if(jedis != null){
            jedis.close();
        }
    }
    JsonMapper m = new JsonMapper();
    return (T) m.fromJson(String.valueOf(result), clazz);
}

/**
 * 新增/修改，需要传入key，value可传入对象，生存时间（单位：秒）
 * @param key
 * @param obj
 * @param t
 */
public void save(String key, Object obj, int t){
    if(key == null || "".equals(key)){
        throw new ServiceException("key值不能为空！");
    }

    if(obj == null){
        throw new ServiceException("value值不能为空！");
    }

    JsonMapper m = new JsonMapper();
    String val  =  m.toJson(obj);
    logger.debug("新增key=>" + key + "及value=>" + val);
    JedisPool pool = null;
    Jedis jedis = null;
    try {
        pool = getPool();
        jedis = pool.getResource();
        jedis.set(key, val);
        jedis.expire(key, t);
    }catch (Exception e){
        e.printStackTrace();
        throw new ServiceException("保存redis数据失败！");
    }finally {
        if(jedis != null){
            jedis.close();
        }
    }
}

/**
 * 更新key的生存时间（单位：秒）
 * @param key
 * @param t
 * @return
 */
public Long expireRow(String key, int t){
    if(key == null || "".equals(key)){
        throw new ServiceException("key值不能为空！");
    }

    Long res = 0L;
    JedisPool pool = null;
    Jedis jedis = null;
    try{
        pool = getPool();
        jedis = pool.getResource();
        res = jedis.expire(key, t);
    }catch (Exception e){
        e.printStackTrace();
    }finally {
        if(jedis != null){
            jedis.close();
        }
    }
    return res;
}

public static Map<String, Object> beanToMap(Object obj) {
    if(obj == null){
        return null;
    }
    Map<String, Object> map = new HashMap<String, Object>();
    try {
        BeanInfo beanInfo = Introspector.getBeanInfo(obj.getClass());
        PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
        for (PropertyDescriptor property : propertyDescriptors) {
            String key = property.getName();

            // 过滤class属性
            if (!key.equals("class")) {
                // 得到property对应的getter方法
                Method getter = property.getReadMethod();
                Object value = getter.invoke(obj);

                map.put(key, value);
            }
        }
    } catch (Exception e) {
        System.out.println("transBean2Map Error " + e);
    }
    return map;
}