redisツールクラス

package com.kuang.utils;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;

import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

@Component
public final class RedisUtil {

    @Autowired
    private RedisTemplate redisTemplate;

    // =============================common============================
    /**
     *         
     * @param key   
     * @param time   ( )
     */
    public boolean expire(String key, long time) {
        try {
            if (time > 0) {
                redisTemplate.expire(key, time, TimeUnit.SECONDS);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     *   key       
     * @param key      null
     * @return   ( )   0       
     */
    public long getExpire(String key) {
        return redisTemplate.getExpire(key, TimeUnit.SECONDS);
    }


    /**
     *   key    
     * @param key  
     * @return true    false   
     */
    public boolean hasKey(String key) {
        try {
            return redisTemplate.hasKey(key);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }


    /**
     *     
     * @param key           
     */
    @SuppressWarnings("unchecked")
    public void del(String... key) {
        if (key != null && key.length > 0) {
            if (key.length == 1) {
                redisTemplate.delete(key[0]);
            } else {
                redisTemplate.delete(CollectionUtils.arrayToList(key));
            }
        }
    }


    // ============================String=============================

    /**
     *       
     * @param key  
     * @return  
     */
    public Object get(String key) {
        return key == null ? null : redisTemplate.opsForValue().get(key);
    }

    /**
     *       
     * @param key    
     * @param value  
     * @return true   false  
     */

    public boolean set(String key, Object value) {
        try {
            redisTemplate.opsForValue().set(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }


    /**
     *            
     * @param key    
     * @param value  
     * @param time    ( ) time   0   time    0       
     * @return true   false   
     */

    public boolean set(String key, Object value, long time) {
        try {
            if (time > 0) {
                redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
            } else {
                set(key, value);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }


    /**
     *   
     * @param key    
     * @param delta     (  0)
     */
    public long incr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("        0");
        }
        return redisTemplate.opsForValue().increment(key, delta);
    }


    /**
     *   
     * @param key    
     * @param delta     (  0)
     */
    public long decr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("        0");
        }
        return redisTemplate.opsForValue().increment(key, -delta);
    }


    // ================================Map=================================

    /**
     * HashGet
     * @param key       null
     * @param item      null
     */
    public Object hget(String key, String item) {
        return redisTemplate.opsForHash().get(key, item);
    }

    /**
     *   hashKey       
     * @param key  
     * @return        
     */
    public Map