package com.yuzhi.back.framework;
import org.springframework.stereotype.Component;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import javax.annotation.Resource;
import java.util.HashMap;
@Component
public class RedisManager {
@Resource
private JedisPool pool;
/**
* 通过key获取储存在redis中的value
* 并释放连接
* @param key
* @return 成功返回value 失败返回null
*/
public String get(String key) {
Jedis jedis = null;
String value = null;
try {
jedis = pool.getResource();
value = jedis.get(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
returnResource(pool, jedis);
}
return value;
}
/**
* 向redis存入key和value,并释放连接资源
* 如果key已经存在 则覆盖
* @param key
* @param value
* @return 成功 返回OK 失败返回 0
*/
public String set(String key, String value) {
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.set(key, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
return "0";
} finally {
returnResource(pool, jedis);
}
}
/**
* 删除指定的key,也可以传入一个包含key的数组
* @param keys 一个key 也可以使 string 数组
* @return 返回删除成功的个数
*/
public Long del(String... keys) {
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.del(keys);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
return 0L;
} finally {
returnResource(pool, jedis);
}
}
/**
* 判断key是否存在
* @param key
* @return true OR false
*/
public boolean exists(String key) {
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.exists(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
return false;
} finally {
returnResource(pool, jedis);
}
}
/**
* 返还到连接池
*
* @param pool
* @param jedis
*/
public static void returnResource(JedisPool pool, Jedis jedis) {
if (jedis != null) {
pool.returnResource(jedis);
}
}
/**
* get value from redis
* @param key
* @return
*/
public byte[] get(byte[] key) {
byte[] value = null;
Jedis jedis = pool.getResource();
try {
value = jedis.get(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
pool.returnResource(jedis);
}
return value;
}
/**
* set
* @param key
* @param value
* @return
*/
public byte[] set(byte[] key, byte[] value) {
Jedis jedis = pool.getResource();
try {
jedis.set(key, value);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
pool.returnResource(jedis);
}
return value;
}
/**
* set
* @param key
* @param value
* @param expire
* @return
*/
public byte[] set(byte[] key, byte[] value, int expire) {
Jedis jedis = pool.getResource();
try {
jedis.set(key, value);
if (expire != 0) {
jedis.expire(key, expire);
}
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally {
pool.returnResource(jedis);
}
return value;
}
public void setHash(String key,HashMap<String,String> map,int expire){
Jedis jedis = pool.getResource();
try{
jedis.hmset(key, map);
if (expire != 0) {
jedis.expire(key, expire);
}
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally{
pool.returnResource(jedis);
}
}
/**
* del
* @param key
*/
public void del(byte[] key){
Jedis jedis = pool.getResource();
try{
jedis.del(key);
} catch (Exception e) {
pool.returnBrokenResource(jedis);
e.printStackTrace();
} finally{
pool.returnResource(jedis);
}
}
/**
* flush
*/
public void flushDB() {
Jedis jedis = pool.getResource();
try {
jedis.flushDB();
} finally {
pool.returnResource(jedis);
}
}
/**
* size
*/
public Long dbSize() {
Long dbSize = 0L;
Jedis jedis = pool.getResource();
try {
dbSize = jedis.dbSize();
} finally {
pool.returnResource(jedis);
}
return dbSize;
}
// /**
// * keys
// *
// * @param pattern
// * @return
// */
// public Set<byte[]> keys(String pattern) {
// Set<byte[]> keys = null;
// Jedis jedis = pool.getResource();
// try {
// keys = jedis.keys(pattern.getBytes());
// } finally {
// pool.returnResource(jedis);
// }
// return keys;
// }
/*
创建列表，并设置列表长度
*/
public Long rpush(String key,String value){
Long index=0L;
Jedis jedis = pool.getResource();
try {
jedis.rpush(key,value);
} finally {
pool.returnResource(jedis);
}
return index;
}
/*
设置列表(key)相应坐标(index)的value
*/
public Long lset(String key,Long index,String value){
Jedis jedis = pool.getResource();
try {
jedis.lset(key,index,value);
} finally {
pool.returnResource(jedis);
}
return index;
}
/*
取指定列表指定坐标的value
*/
public String lindex(String key,Long index){
String value=null;
Jedis jedis = pool.getResource();
try {
value =jedis.lindex(key,index);
} finally {
pool.returnResource(jedis);
}
return value;
}
/*
返回指定列表的长度
*/
public Long llen(String key){
Long length=null;
Jedis jedis = pool.getResource();
try {
length=jedis.llen(key);
} finally {
pool.returnResource(jedis);
}
return length;
}
/*
删除列表
*/
public Long del(String key){
Long length=null;
Jedis jedis = pool.getResource();
try {
length=jedis.del(key);
} finally {
pool.returnResource(jedis);
}
return length;
}
public String hget(String key,String filed){
String value=null;
Jedis jedis = pool.getResource();
try {
value=jedis.hget(key,filed);
} finally {
pool.returnResource(jedis);
}
return value;
}
public Long hset(String key,String filed,String value){
Long length=null;
Jedis jedis = pool.getResource();
try {
length=jedis.hset(key, filed,value);
} finally {
pool.returnResource(jedis);
}
return length;
}
}
