Redis3.0.5封装

Redis3.0.5 Jedis封装

本文主要描述redis3.0.5集群与spring集成，以及部分接口的封装。

环境：
- Spring 3.1.2
- Jedis 2.8.0
- JDK 1.6.045

一、 Spring配置

二、编写redis常用接口

import java.util.List;

/** * @ClassName: SimpleCache * @Description: 缓存接口 * @date 2016年4月20日 上午11:41:27 * */
public interface SimpleCache {

    /** * @Title: addObj * @Description: 添加一个缓冲对象数据 * @param key 字符串的缓存key * @param value 缓冲的缓存数据 * @return 成功返回1 如果存在返回 0 * @throws Exception */
    Long addObj(String key, Object value) throws Exception;

    /** * @Title: add * @Description: 缓存一个对象数据，并指定缓存过期时间 * @param key * @param value * @param seconds 过期时间 * @return 成功返回1 如果存在返回 0 * @throws Exception */
    Long addObj(String key, Object value, int seconds) throws Exception;

    /** * @Title: updateObj * @Description: 更新一个缓冲对象数据 * @param key 字符串的缓存key * @param value 缓冲的缓存数据 * @return 成功返回1 如果存在返回 0 * @throws Exception */
    Long updateObj(String key, Object value) throws Exception;

    /** * @Title: updateObj * @Description: 更新一个缓存数据，并指定缓存过期时间 * @param key * @param value * @param seconds 过期时间 * @return 成功返回1 如果存在返回 0 * @throws Exception */
    Long updateObj(String key, Object value, int seconds) throws Exception;

    /** * @Title: getObj * @Description: 根据key获取到一直值 * @param key 字符串的缓存key * @return 成功返回Object ,失败返回null * @throws Exception */
    Object getObj(String key) throws Exception;


    /** * @Title: addStr * @Description: 添加一个缓冲数据，如果已存在则返回失败 * @param key 字符串的缓存key * @param value 缓冲的缓存数据 * @return 成功返回1 如果存在返回 0 * @throws Exception */
    Long addStr(String key, String value) throws Exception;

    /** * @Title: addStr * @Description: 缓存一个数据，并指定缓存过期时间，如果已存在则返回失败 * @param key * @param value * @param seconds 单位:秒 * @return 成功返回1 如果存在返回 0 * @throws Exception */
    Long addStr(String key, String value, int seconds) throws Exception;

    /** * @Title: appendStr * @Description: 通过key向指定的value值追加值 * @param key 字符串的缓存key * @param value 追加值 * @return 成功返回 添加后value的长度 失败 返回 添加的 value 的长度 * @throws Exception */
    Long appendStr(String key, String value) throws Exception;

    /** * @Description 批量的设置key:value,可以一个,如果key已经存在则会失败,操作会回滚 * <p>example:</p> * <p> obj.msetnx(new String[]{"key1","value1","key2","value2"})</p> * @param keysvalues * @return 返回成功更新的个数 * @throws Exception */
    Long addMstr(String... keysvalues) throws Exception;

    /** * @Title: updateStr * @Description: 更新一个缓冲数据 * @param key 字符串的缓存key * @param value 缓冲的缓存数据 * @return 成功返回1 如果存在返回 0 * @throws Exception */
    Long updateStr(String key, String value) throws Exception;

    /** * @Title: updateStr * @Description: 更新一个缓存数据，并指定缓存过期时间 * @param key * @param value * @param seconds * @return 成功返回1 如果存在返回 0 * @throws Exception */
    Long updateStr(String key, String value, int seconds) throws Exception;


    /** * @Description 批量的设置key:value,若是没有key则插入 * <p>example:</p> * <p> obj.msetnx(new String[]{"key1","value1","key2","value2"})</p> * @param keysvalues * @return 返回更新成功的个数 * @throws Exception */
    Long updateMstr(String... keysvalues) throws Exception;

    /** * @Title: getStr * @Description: 根据key获取到一直值 * @param key 字符串的缓存key * @return 成功返回value 失败返回null * @throws Exception */
    String getStr(String key) throws Exception;

    /** * @Title: getStrs * @Description: 根据key获取到一直值 * @param key 字符串的缓存key * @return * @throws Exception */
    List<String> getMstr(String... keys) throws Exception;

    /** * @Title: delete * @Description: 删除一个数据问题，不存在则忽略 * @param key 字符串的缓存key * @return * @throws Exception */
    Long deleteKey(String key) throws Exception;


    /** * @Title: delete * @Description: 删除多个数据问题 * @param key 字符串的缓存key * @return 返回删除成功的个数 * @throws Exception */
    Long deleteKeys(String...keys) throws Exception;

    /** * @Title: exists * @Description: 判断指定key是否在缓存中已经存在 * @param key 字符串的缓存key * @return true OR false * @throws Exception */
    Boolean exists(String key) throws Exception;

    /** * @Title: updateExpireTime * @Description: 更新过期时间 * @param key 字符串的缓存key * @param seconds 过期时间 * @return 成功返回1，失败返回0 * @throws Exception */
    Long updateExpireTime(String key, int seconds) throws Exception;

    /** * @Description 如果该key不存在，它被设置为0执行操作之前。如果key包含了错误类型的值或包含不能被表示为整数，字符串，则返回错误 * @param key * @return 加值后的结果 * @throws Exception */
    Long increment(String key) throws Exception;

    /** * @Description 通过key给指定的value加值,如果key不存在,则这时value为该值 * @param key * @param integer * @return * @throws Exception */
    Long incrementBy(String key,Long integer) throws Exception;

    /** * @Description 对key的值做减减操作,如果key不存在,则设置key为-1 * @param key * @return */
    Long decrement(String key)throws Exception;

    /** * @Description 减去指定的值 * @param key * @param integer * @return * @throws Exception */
    Long decrementBy(String key,Long integer) throws Exception;


    /** * @Description 通过key获取value值的长度 * @param key * @return 失败返回null * @throws Exception */
    Long valueStrlen(String key) throws Exception;

}

三、接口实现，需要序列化JsonUtil

import java.util.ArrayList;
import java.util.List;
import org.apache.log4j.Logger;
import redis.clients.jedis.JedisCluster;


public class SmartCache implements SimpleCache {

    protected final Logger logger = Logger.getLogger("dao");

    protected JedisCluster jedisCluster;

    public JedisCluster getJedisCluster() {
        return jedisCluster;
    }

    public void setJedisCluster(JedisCluster jedisCluster) {
        this.jedisCluster = jedisCluster;
    }

    @Override
    public Long addObj(String key, Object value) throws Exception {
        Long res = 0L;
        JsonUtil.DEFAULT_JSON = JsonUtil.FAST_JSON;
        String objectToJson = JsonUtil.toJSONString(value);
        res = jedisCluster.setnx(key, objectToJson);
        return res;
    }

    @Override
    public Long addObj(String key, Object value, int seconds) throws Exception {
        Long res = 0L;
        JsonUtil.DEFAULT_JSON = JsonUtil.FAST_JSON;
        String objectToJson = JsonUtil.toJSONString(value);
        String temp = jedisCluster.setex(key, seconds, objectToJson);
        temp = jedisCluster.setex(key, seconds, objectToJson);
        if (temp.equals("OK")) {
            res = 1L;
        }
        return res;
    }

    @Override
    public Long updateObj(String key, Object value) throws Exception {
        Long res = 0L;
        boolean exists = jedisCluster.exists(key);
        if (exists) {
            JsonUtil.DEFAULT_JSON = JsonUtil.FAST_JSON;
            String objectToJson = JsonUtil.toJSONString(value);
            String temp = jedisCluster.set(key, objectToJson);
            if (temp.equals("OK")) {
                res = 1L;
            }
        }
        return res;
    }

    @Override
    public Long updateObj(String key, Object value, int seconds) throws Exception {
        Long res = 0L;
        boolean exists = jedisCluster.exists(key);
        if (exists) {
            JsonUtil.DEFAULT_JSON = JsonUtil.FAST_JSON;
            String objectToJson = JsonUtil.toJSONString(value);
            jedisCluster.expire(key, seconds);
            String temp = jedisCluster.set(key, objectToJson);
            if (temp.equals("OK")) {
                res = 1L;
            }
        }
        return res;
    }

    @Override
    public Object getObj(String key) throws Exception {
        String res = null;
        res = jedisCluster.get(key);
        Object object = JsonUtil.toBean(res, Object.class);
        return object;
    }

    @Override
    public Long addStr(String key, String value) throws Exception {
        Long res = 0L;
        res = jedisCluster.setnx(key, value);
        return res;
    }

    @Override
    public Long addStr(String key, String value, int seconds) throws Exception {
        Long res = 0L;
        String temp = jedisCluster.setex(key, seconds, value);
        if (temp.equals("OK")) {
            res = 1L;
        }
        return res;
    }

    @Override
    public Long appendStr(String key, String value) throws Exception {
        Long res = 0L;
        res = jedisCluster.append(key, value);
        return res;
    }

    @Override
    public Long addMstr(String... keysvalues) throws Exception {
        Long rescount = 0L;
        if (keysvalues.length % 2 == 0) {
            int i = 0;
            for (i = 0; i < keysvalues.length;) {
                Long temp = this.addStr(keysvalues[i], keysvalues[i + 1]);
                if (temp == 1L) {
                    rescount++;
                }
                i = i + 2;
            }
        }
        return rescount;
    }

    @Override
    public Long updateStr(String key, String value) throws Exception {
        Long res = 0L;
        boolean exists = jedisCluster.exists(key);
        if (exists) {
            String temp = jedisCluster.set(key, value);
            if (temp.equals("OK")) {
                res = 1L;
            }
        }
        return res;
    }

    @Override
    public Long updateStr(String key, String value, int seconds) throws Exception {
        Long res = 0L;
        boolean exists = jedisCluster.exists(key);
        if (exists) {
            jedisCluster.expire(key, seconds);
            String temp = jedisCluster.set(key, value);
            if (temp.equals("OK")) {
                res = 1L;
            }
        }
        return res;
    }

    @Override
    public Long updateMstr(String... keysvalues) throws Exception {
        Long rescount = 0L;
        if (keysvalues.length % 2 == 0) {
            int i = 0;
            for (i = 0; i < keysvalues.length;) {
                Long temp = this.updateStr(keysvalues[i], keysvalues[i + 1]);
                if (temp == 1L) {
                    rescount++;
                }
                i = i + 2;
            }
        }
        return rescount;
    }

    @Override
    public String getStr(String key) throws Exception {
        String res = null;
        res = jedisCluster.get(key);
        return res;
    }

    @Override
    public List<String> getMstr(String... keys) throws Exception {
        List<String> values = new ArrayList<String>();
        for (int i = 0; i < keys.length; i++) {
            String value = "";
            if (this.exists(keys[i])) {
                value = this.getStr(keys[i]);
                if (!value.equals(null)) {
                    values.add(value);
                }
            }
        }
        return values;
    }

    @Override
    public Long deleteKey(String key) throws Exception {
        return jedisCluster.del(key);
    }

    @Override
    public Long deleteKeys(String... keys) throws Exception {
        Long rescount = 0L;
        for (int i = 0; i < keys.length; i++) {
            Long temp = this.deleteKey(keys[i]);
            if (temp == 1L) {
                rescount++;
            }
        }
        return rescount;
    }

    @Override
    public Boolean exists(String key) throws Exception {
        return jedisCluster.exists(key);
    }

    @Override
    public Long updateExpireTime(String key, int seconds) throws Exception {
        Long res = 0L;
        boolean exists = jedisCluster.exists(key);
        if (exists) {
            res = jedisCluster.expire(key, seconds);
        }
        return res;
    }

    @Override
    public Long increment(String key) throws Exception {
        Long res = 0L;
        res = jedisCluster.incr(key);
        return res;
    }

    @Override
    public Long incrementBy(String key, Long integer) throws Exception {
        Long res = 0L;
        res = jedisCluster.incrBy(key, integer);
        return res;
    }

    @Override
    public Long decrement(String key) throws Exception {
        Long res = 0L;
        res = jedisCluster.decr(key);
        return res;
    }

    @Override
    public Long decrementBy(String key, Long integer) throws Exception {
        Long res = 0L;
        res = jedisCluster.decrBy(key, integer);
        return res;
    }

    @Override
    public Long valueStrlen(String key) throws Exception {
        Long res = 0L;
        res = jedisCluster.strlen(key);
        return res;
    }

}