public class CacheKit {
private static Logger logger = LoggerFactory.getLogger(CacheKit.class);
private List<JSONObject> resultList;
private static JedisPool pool;
/**
* 初始化Redis连接池
*/
private static void initializePool() {
//redisURL 与 redisPort 的配置文件
String configFile = "production.properties";
if (PropKit.getBoolean("devMode")) {
configFile = "dev.properties";
}
JedisPoolConfig config = new JedisPoolConfig();
//设置最大连接数(100个足够用了,没必要设置太大)
config.setMaxTotal(100);
//最大空闲连接数
config.setMaxIdle(10);
//获取Jedis连接的最大等待时间(50秒)
config.setMaxWaitMillis(50 * 1000);
//在获取Jedis连接时,自动检验连接是否可用
config.setTestOnBorrow(true);
//在将连接放回池中前,自动检验连接是否有效
config.setTestOnReturn(true);
//自动测试池中的空闲连接是否都是可用连接
config.setTestWhileIdle(true);
//创建连接池
pool = new JedisPool(config, PropKit.use(configFile).get("redisURL"),
PropKit.use(configFile).getInt("redisPort"));
}
/**
* 多线程环境同步初始化(保证项目中有且仅有一个连接池)
*/
private static synchronized void poolInit() {
if (null == pool) {
initializePool();
}
}
/**
* 获取Jedis实例
*/
private static Jedis getJedis() {
if (null == pool) {
poolInit();
}
int timeoutCount = 0;
while (true) {
try {
if (null != pool) {
return pool.getResource();
}
} catch (Exception e) {
if (e instanceof JedisConnectionException) {
timeoutCount++;
logger.warn("getJedis timeoutCount={}", timeoutCount);
if (timeoutCount > 3) {
break;
}
} else {
logger.warn("jedisInfo ... NumActive=" + pool.getNumActive()
+ ", NumIdle=" + pool.getNumIdle()
+ ", NumWaiters=" + pool.getNumWaiters()
+ ", isClosed=" + pool.isClosed());
logger.error("GetJedis error,", e);
break;
}
}
break;
}
return null;
}
/**
* 释放Jedis资源
*
* @param jedis
*/
public static void returnResource(Jedis jedis) {
if (null != jedis) {
pool.returnResourceObject(jedis);
}
}
/**
* 绝对获取方法(保证一定能够使用可用的连接获取到 目标数据)
* Jedis连接使用后放回
* @param key
* @return
*/
private String safeGet(String key) {
Jedis jedis = getJedis();
while (true) {
if (null != jedis) {
break;
} else {
jedis = getJedis();
}
}
String value = jedis.get(key);
returnResource(jedis);
return value;
}
/**
* 绝对设置方法(保证一定能够使用可用的链接设置 数据)
* Jedis连接使用后返回连接池
* @param key
* @param time
* @param value
*/
private void safeSet(String key, int time, String value) {
Jedis jedis = getJedis();
while (true) {
if (null != jedis) {
break;
} else {
jedis = getJedis();
}
}
jedis.setex(key, time, value);
returnResource(jedis);
}
/**
* 绝对删除方法(保证删除绝对有效)
* Jedis连接使用后返回连接池</span>
* @param key
*/
private void safeDel(String key) {
Jedis jedis = getJedis();
while (true) {
if (null != jedis) {
break;
} else {
jedis = getJedis();
}
}
jedis.del(key);
returnResource(jedis);
}
/**自定义的一些 get set del 方法,方便使用**/
public JSONObject getByCache(String key) {
String result = safeGet(key);
if (result != null) {
return (JSONObject) JSONObject.parse(result);
}
return null;
}
public String getByCacheToString(String key) {
String result = safeGet(key);
if (result != null) {
return result;
}
return null;
}
public List<JSONObject> getArrayByCache(String key) {
String result = safeGet(key);
if (result != null) {
resultList = JSONArray.parseArray(result, JSONObject.class);
return resultList;
}
return null;
}
public JSONArray getJSONArrayByCache(String key) {
String result = safeGet(key);
if (result != null) {
return JSONArray.parseArray(result);
}
return null;
}
public void setByCache(String key, String s) {
safeSet(key, 86400, s);
}
public void setByCacheOneHour(String key, String s) {
safeSet(key, 3600, s);
}
public void setByCacheOneHour(String key, List<JSONObject> json) {
safeSet(key, 86400, JSONObject.toJSONString(json));
resultList = json;
}
public void setByCache(String key, JSONObject json) {
safeSet(key, 86400, JSONObject.toJSONString(json));
}
public void setByCache(String key, List<JSONObject> list) {
safeSet(key, 86400, JSONObject.toJSONString(list));
resultList = list;
}
public void setByCache(String key, JSONArray array) {
safeSet(key, 86400, JSONArray.toJSONString(array));
}
public void setByCacheCusTime(String key, String s, int time) {
safeSet(key, time, s);
}
public void delByCache(String key) {
if (null != safeGet(key)) {
safeDel(key);
}
}
public JSONObject toJSON(DBObject db) {
return (JSONObject) JSONObject.toJSON(db);
}
public List<JSONObject> toJSON(List<DBObject> list) {
List<JSONObject> json = new ArrayList<>();
for (DBObject aList : list) {
json.add((JSONObject) JSONObject.toJSON(aList));
}
return json;
}
public boolean notNull() {
return resultList != null && resultList.size() > 0;
}
public List<JSONObject> getResult() {
return resultList;
}
}
---------------------
作者:隐于野
来源:CSDN
原文:https://blog.csdn.net/u010823097/article/details/51720406
版权声明:本文为博主原创文章,转载请附上博文链接!