Jedis的配置和使用-普通jdk版本

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项目github地址:


喜欢可以star下。



https://github.com/lalalallalala/JedisProject



一 导入jedis jar包

如果找不jar包,

https://mvnrepository.com/

从这个网站下载,搜索,找到需要的版本,下载。

在这里插入图片描述



二 JedisUtil工具类

注意:如果JedisPoolConfig.set报错,还得导入commons-pool这个jar包,因为高版本jedis没用集成进去。

/**
 * JedisUtil(推荐存Byte数组,存Json字符串效率更慢)
 * @author hhc
 */
public class JedisUtil {

    private static volatile JedisPool jedisPool = null;

    /**
     * 初始化Redis连接池
     */
    static {
        try {
            System.out.println("初始化成功");
            if (null == jedisPool) {
                synchronized (JedisUtil.class) {
                    if (null == jedisPool) {
                        JedisPoolConfig poolConfig = new JedisPoolConfig();
                        poolConfig.setMaxTotal(1000);
                        poolConfig.setMaxIdle(32);
                        poolConfig.setMaxWaitMillis(100 * 1000);
                        poolConfig.setTestOnBorrow(true);

                        jedisPool = new JedisPool(poolConfig, "127.0.0.1", 6379);
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 获取Jedis实例
     * @param 
     * @return redis.clients.jedis.Jedis
     * @author dolyw.com
     * @date 2018/9/4 15:47
     */
    public static synchronized Jedis getJedis() {
        try {
            if (jedisPool != null) {
                return jedisPool.getResource();
            } else {
                return null;
            }
        } catch (Exception e) {
            throw new RuntimeException("获取Jedis资源异常:" + e.getMessage());
        }
    }

    /**
     * 释放Jedis资源
     * @param
     * @return void
     * @author dolyw.com
     * @date 2018/9/5 9:16
     */
    public static void closePool() {
        try {
            jedisPool.close();
        } catch (Exception e) {
            throw new RuntimeException("释放Jedis资源异常:" + e.getMessage());
        }
    }

    /**
     * 获取redis键值-object
     * @param key
     * @return java.lang.Object
     * @author dolyw.com
     * @date 2018/9/4 15:47
     */
    public static Object getObject(String key) {
        try (Jedis jedis = jedisPool.getResource()) {
            byte[] bytes = jedis.get(key.getBytes());
            if (StringUtil.isNotNull(bytes)) {
                return SerializableUtil.unserializable(bytes);
            }
        } catch (Exception e) {
            throw new RuntimeException("获取Redis键值getObject方法异常:key=" + key + " cause=" + e.getMessage());
        }
        return null;
    }

    /**
     * 设置redis键值-object
     * @param key
	 * @param value
     * @return java.lang.String
     * @author dolyw.com
     * @date 2018/9/4 15:49
     */
    public static String setObject(String key, Object value) {
        try (Jedis jedis = jedisPool.getResource()) {
            return jedis.set(key.getBytes(), SerializableUtil.serializable(value));
        } catch (Exception e) {
            throw new RuntimeException("设置Redis键值setObject方法异常:key=" + key + " value=" + value + " cause=" + e.getMessage());
        }
    }

    /**
     * 设置redis键值-object-expiretime
     * @param key
	 * @param value
	 * @param expiretime
     * @return java.lang.String
     * @author dolyw.com
     * @date 2018/9/4 15:50
     */
    public static String setObject(String key, Object value, int expiretime) {
        String result;
        try (Jedis jedis = jedisPool.getResource()) {
            result = jedis.set(key.getBytes(), SerializableUtil.serializable(value));
            if (Constant.OK.equals(result)) {
                jedis.expire(key.getBytes(), expiretime);
            }
            return result;
        } catch (Exception e) {
            throw new RuntimeException("设置Redis键值setObject方法异常:key=" + key + " value=" + value + " cause=" + e.getMessage());
        }
    }

    /**
     * 获取redis键值-Json
     * @param key
     * @return java.lang.Object
     * @author dolyw.com
     * @date 2018/9/4 15:47
     */
    public static String getJson(String key) {
        try (Jedis jedis = jedisPool.getResource()) {
            return jedis.get(key);
        } catch (Exception e) {
            throw new RuntimeException("获取Redis键值getJson方法异常:key=" + key + " cause=" + e.getMessage());
        }
    }

    /**
     * 设置redis键值-Json
     * @param key
     * @param value
     * @return java.lang.String
     * @author Wang926454
     * @date 2018/9/4 15:49
     */
    public static String setJson(String key, String value) {
        try (Jedis jedis = jedisPool.getResource()) {
            return jedis.set(key, value);
        } catch (Exception e) {
            throw new RuntimeException("设置Redis键值setJson方法异常:key=" + key + " value=" + value + " cause=" + e.getMessage());
        }
    }

    /**
     * 设置redis键值-Json-expiretime
     * @param key
     * @param value
     * @param expiretime
     * @return java.lang.String
     * @author Wang926454
     * @date 2018/9/4 15:50
     */
    public static String setJson(String key, String value, int expiretime) {
        String result;
        try (Jedis jedis = jedisPool.getResource()) {
            result = jedis.set(key, value);
            if (Constant.OK.equals(result)) {
                jedis.expire(key, expiretime);
            }
            return result;
        } catch (Exception e) {
            throw new RuntimeException("设置Redis键值setJson方法异常:key=" + key + " value=" + value + " cause=" + e.getMessage());
        }
    }

    /**
     * 删除key
     * @param key
     * @return java.lang.Long
     * @author Wang926454
     * @date 2018/9/4 15:50
     */
    public static Long delKey(String key) {
        try (Jedis jedis = jedisPool.getResource()) {
            return jedis.del(key.getBytes());
        } catch (Exception e) {
            throw new RuntimeException("删除Redis的键delKey方法异常:key=" + key + " cause=" + e.getMessage());
        }
    }

    /**
     * key是否存在
     * @param key
     * @return java.lang.Boolean
     * @author Wang926454
     * @date 2018/9/4 15:51
     */
    public static Boolean exists(String key) {
        try (Jedis jedis = jedisPool.getResource()) {
            return jedis.exists(key.getBytes());
        } catch (Exception e) {
            throw new RuntimeException("查询Redis的键是否存在exists方法异常:key=" + key + " cause=" + e.getMessage());
        }
    }

    /**
     * 模糊查询获取key集合(keys的速度非常快,但在一个大的数据库中使用它仍然可能造成性能问题,生产不推荐使用)
     * @param key
     * @return java.util.Set<java.lang.String>
     * @author Wang926454
     * @date 2018/9/6 9:43
     */
    public static Set<String> keysS(String key) {
        try (Jedis jedis = jedisPool.getResource()) {
            return jedis.keys(key);
        } catch (Exception e) {
            throw new RuntimeException("模糊查询Redis的键集合keysS方法异常:key=" + key + " cause=" + e.getMessage());
        }
    }

    /**
     * 模糊查询获取key集合(keys的速度非常快,但在一个大的数据库中使用它仍然可能造成性能问题,生产不推荐使用)
     * @param key
     * @return java.util.Set<java.lang.String>
     * @author Wang926454
     * @date 2018/9/6 9:43
     */
    public static Set<byte[]> keysB(String key) {
        try (Jedis jedis = jedisPool.getResource()) {
            return jedis.keys(key.getBytes());
        } catch (Exception e) {
            throw new RuntimeException("模糊查询Redis的键集合keysB方法异常:key=" + key + " cause=" + e.getMessage());
        }
    }

    /**
     * 获取过期剩余时间
     * @param key
     * @return java.lang.String
     * @author Wang926454
     * @date 2018/9/11 16:26
     */
    public static Long ttl(String key) {
        Long result = -2L;
        try (Jedis jedis = jedisPool.getResource()) {
            result = jedis.ttl(key);
            return result;
        } catch (Exception e) {
            throw new RuntimeException("获取Redis键过期剩余时间ttl方法异常:key=" + key + " cause=" + e.getMessage());
        }
    }
}



序列化工具类

/**
 * Serializable工具(JDK)(也可以使用Protobuf自行百度)
 * @author hhc
 */
public class SerializableUtil {

    private SerializableUtil() {}

    /**
     * logger
     */
    private static final Logger logger = LoggerFactory.getLogger(SerializableUtil.class);

    /**
     * 序列化
     * @param object
     * @return byte[]
     * @author dolyw.com
     * @date 2018/9/4 15:14
     */
    public static byte[] serializable(Object object) {
        ByteArrayOutputStream baos = null;
        ObjectOutputStream oos = null;
        try {
            baos = new ByteArrayOutputStream();
            oos = new ObjectOutputStream(baos);
            oos.writeObject(object);
            return baos.toByteArray();
        } catch (IOException e) {
            logger.error("SerializableUtil工具类序列化出现IOException异常:{}", e.getMessage());
            throw new RuntimeException("SerializableUtil工具类序列化出现IOException异常:" + e.getMessage());
        } finally {
            try {
                if (oos != null) {
                    oos.close();
                }
                if (baos != null) {
                    baos.close();
                }
            } catch (IOException e) {
                logger.error("SerializableUtil工具类反序列化出现IOException异常:{}", e.getMessage());
                throw new RuntimeException("SerializableUtil工具类反序列化出现IOException异常:" + e.getMessage());
            }
        }
    }

    /**
     * 反序列化
     * @param bytes
     * @return java.lang.Object
     * @author dolyw.com
     * @date 2018/9/4 15:14
     */
    public static Object unserializable(byte[] bytes) {
        ByteArrayInputStream bais = null;
        ObjectInputStream ois = null;
        try {
            bais = new ByteArrayInputStream(bytes);
            ois = new ObjectInputStream(bais);
            return ois.readObject();
        } catch (ClassNotFoundException e) {
            logger.error("SerializableUtil工具类反序列化出现ClassNotFoundException异常:{}", e.getMessage());
            throw new RuntimeException("SerializableUtil工具类反序列化出现ClassNotFoundException异常:" + e.getMessage());
        } catch (IOException e) {
            logger.error("SerializableUtil工具类反序列化出现IOException异常:{}", e.getMessage());
            throw new RuntimeException("SerializableUtil工具类反序列化出现IOException异常:" + e.getMessage());
        } finally {
            try {
                if (ois != null) {
                    ois.close();
                }
                if (bais != null) {
                    bais.close();
                }
            } catch (IOException e) {
                logger.error("SerializableUtil工具类反序列化出现IOException异常:{}", e.getMessage());
                throw new RuntimeException("SerializableUtil工具类反序列化出现IOException异常:" + e.getMessage());
            }
        }
    }
}



四 通用的工具包

自己可以导入,或者替换掉

public class StringUtil {

    private StringUtil() {}

    /**
     * 定义下划线
     */
    private static final char UNDERLINE = '_';

    /**
     * String为空判断(不允许空格)
     * @param str
     * @return boolean
     * @author dolyw.com
     * @date 2018/9/4 14:49
     */
    public static boolean isBlank(String str) {
        return str == null || "".equals(str.trim());
    }

    /**
     * String不为空判断(不允许空格)
     * @param str
     * @return boolean
     * @author dolyw.com
     * @date 2018/9/4 14:51
     */
    public static boolean isNotBlank(String str) {
        return !isBlank(str);
    }

    /**
     * Byte数组为空判断
     * @param bytes
     * @return boolean
     * @author dolyw.com
     * @date 2018/9/4 15:39
     */
    public static boolean isNull(byte[] bytes) {
        // 根据byte数组长度为0判断
        return bytes == null || bytes.length == 0;
    }

    /**
     * Byte数组不为空判断
     * @param bytes
     * @return boolean
     * @author dolyw.com
     * @date 2018/9/4 15:41
     */
    public static boolean isNotNull(byte[] bytes) {
        return !isNull(bytes);
    }

    /**
     * 驼峰转下划线工具
     * @param param
     * @return java.lang.String
     * @author dolyw.com
     * @date 2018/9/4 14:52
     */
    public static String camelToUnderline(String param) {
        if (isNotBlank(param)) {
            int len = param.length();
            StringBuilder sb = new StringBuilder(len);
            for (int i = 0; i < len; i++) {
                char c = param.charAt(i);
                if (Character.isUpperCase(c)) {
                    sb.append(UNDERLINE);
                    sb.append(Character.toLowerCase(c));
                } else {
                    sb.append(c);
                }
            }
            return sb.toString();
        } else {
            return "";
        }
    }

    /**
     * 下划线转驼峰工具
     * @param param
     * @return java.lang.String
     * @author dolyw.com
     * @date 2018/9/4 14:52
     */
    public static String underlineToCamel(String param) {
        if (isNotBlank(param)) {
            int len = param.length();
            StringBuilder sb = new StringBuilder(len);
            for (int i = 0; i < len; i++) {
                char c = param.charAt(i);
                if (c == 95) {
                    i++;
                    if (i < len) {
                        sb.append(Character.toUpperCase(param.charAt(i)));
                    }
                } else {
                    sb.append(c);
                }
            }
            return sb.toString();
        } else {
            return "";
        }
    }

    /**
     * 在字符串两周添加''
     * @param param
     * @return java.lang.String
     * @author dolyw.com
     * @date 2018/9/4 14:53
     */
    public static String addSingleQuotes(String param) {
        return "\'" + param + "\'";
    }
}

public class Constant {

    private Constant() {}

    /**
     * redis-OK
     */
    public static final String OK = "OK";

    /**
     * redis过期时间,以秒为单位,一分钟
     */
    public static final int EXRP_MINUTE = 60;

    /**
     * redis过期时间,以秒为单位,一小时
     */
    public static final int EXRP_HOUR = 60 * 60;

    /**
     * redis过期时间,以秒为单位,一天
     */
    public static final int EXRP_DAY = 60 * 60 * 24;

    /**
     * redis-key-前缀-shiro:cache:
     */
    public static final String PREFIX_SHIRO_CACHE = "shiro:cache:";

    /**
     * redis-key-前缀-shiro:access_token:
     */
    public static final String PREFIX_SHIRO_ACCESS_TOKEN = "shiro:access_token:";

    /**
     * redis-key-前缀-shiro:refresh_token:
     */
    public static final String PREFIX_SHIRO_REFRESH_TOKEN = "shiro:refresh_token:";

    /**
     * JWT-account:
     */
    public static final String ACCOUNT = "account";

    /**
     * JWT-currentTimeMillis:
     */
    public static final String CURRENT_TIME_MILLIS = "currentTimeMillis";

    /**
     * PASSWORD_MAX_LEN
     */
    public static final Integer PASSWORD_MAX_LEN = 8;

}



五 使用jedis

注意:实例化bean要存jedis,一定需要实现Serializable接口,否则报错。关于各种类型的使用,查询官网或者博客

public class ServiceObject implements Serializable {

 List<ServiceObject> sos1 = null;

        if(!JedisUtil.exists("ServiceObject1")){
            System.out.println("查询,设置redis");
            sos1 = objectDao.selectByCreateDate(temp);
            String isOk2 = JedisUtil.setObject("ServiceObject1", sos1);
            if("OK".equals(isOk2)){
                System.out.println("设置成功:" + isOk2);
            }
        }else {
            System.out.println("从redis获取");
            sos1 = (List<ServiceObject>)JedisUtil.getObject("ServiceObject1");
        }



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