JedisUtils,Jedis工具类
这两天折腾了下Redis,第一次用这玩意，参考网上的几个 Jedis工具类的例子，不过网上的几个比较复杂，啰嗦，大部分功能用不到。还是自己写的简单实用,特此记录。
JedisUtil.java
package com.fants.redis;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
public class JedisUtil {
protected Logger log = LoggerFactory.getLogger(getClass());
private static JedisPool jedisPool = null;
/** 缓存生存时间 */
private final static int expire = 60000;
static {
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxActive(JRedisPoolConfig.MAX_ACTIVE);
config.setMaxIdle(JRedisPoolConfig.MAX_IDLE);
config.setMaxWait(JRedisPoolConfig.MAX_WAIT);
config.setTestOnBorrow(JRedisPoolConfig.TEST_ON_BORROW);
config.setTestOnReturn(JRedisPoolConfig.TEST_ON_RETURN);
// redis如果设置了密码：
jedisPool = new JedisPool(config, JRedisPoolConfig.REDIS_IP,
JRedisPoolConfig.REDIS_PORT, 10000,
JRedisPoolConfig.REDIS_PASSWORD);
}
public static JedisPool getPool() {
return jedisPool;
}
/**
* 从jedis连接池中获取获取jedis对象
*/
public static Jedis getJedis() {
return jedisPool.getResource();
}
/**
* 回收jedis
*/
public static void returnJedis(Jedis jedis) {
if(jedis!=null)
jedisPool.returnResource(jedis);
}
/**
* 设置过期时间
*/
public static void expire(String key, int seconds) {
if (seconds <= 0) {
return;
}
Jedis jedis = getJedis();
jedis.expire(key, seconds);
returnJedis(jedis);
}
/**
* 设置默认过期时间
*/
public static void expire(String key) {
expire(key, expire);
}
public static void set(String key,String value){
if(isBlank(key)) return;
Jedis jedis = getJedis();
jedis.set(key, value);
returnJedis(jedis);
}
public static void set(String key,Object value){
if(isBlank(key)) return;
Jedis jedis = getJedis();
jedis.set(key.getBytes(), SerializeUtil.serialize(value));
returnJedis(jedis);
}
public static void set(String key,int value){
if(isBlank(key)) return;
set(key, String.valueOf(value));
}
public static void set(String key,long value){
if(isBlank(key)) return;
set(key, String.valueOf(value));
}
public static void set(String key,float value){
if(isBlank(key)) return;
set(key, String.valueOf(value));
}
public static void set(String key,double value){
if(isBlank(key)) return;
set(key, String.valueOf(value));
}
public static Float getFloat(String key){
if(isBlank(key)) return null;
return Float.valueOf(getStr(key));
}
public static Double getDouble(String key){
if(isBlank(key)) return null;
return Double.valueOf(getStr(key));
}
public static Long getLong(String key){
if(isBlank(key)) return null;
return Long.valueOf(getStr(key));
}
public static Integer getInt(String key){
if(isBlank(key)) return null;
return Integer.valueOf(getStr(key));
}
public static String getStr(String key){
if(isBlank(key)) return null;
Jedis jedis = getJedis();
String value = jedis.get(key);
returnJedis(jedis);
return value;
}
public static Object getObj(String key){
if(isBlank(key)) return null;
Jedis jedis = getJedis();
byte[] bits = jedis.get(key.getBytes());
Object obj = SerializeUtil.unserialize(bits);
returnJedis(jedis);
return obj;
}
public static boolean isBlank(String str){
return str==null||"".equals(str.trim());
}
}
JRedisPoolConfig.java
package com.fants.redis;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Properties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.jfinal.kit.PathKit;
public class JRedisPoolConfig {
protected static Logger log = LoggerFactory.getLogger(JRedisPoolConfig.class);
public static String REDIS_IP;
public static int REDIS_PORT;
public static String REDIS_PASSWORD;
public static int MAX_ACTIVE;
public static int MAX_IDLE;
public static long MAX_WAIT;
public static boolean TEST_ON_BORROW;
public static boolean TEST_ON_RETURN;
static {
init();
}
public static void init() {
try {
String fullFile = PathKit.getWebRootPath() + File.separator + "WEB-INF" + File.separator + "redis.properties";
File file = new File(fullFile);
if(file.exists()){
log.info("loading redis config from redis.properties.......");
InputStream in = new FileInputStream(fullFile);
Properties p = new Properties();
p.load(in);
REDIS_IP = p.getProperty("redis.ip");
REDIS_PORT = Integer.parseInt(p.getProperty("redis.port"));
REDIS_PASSWORD = p.getProperty("redis.password");
MAX_ACTIVE = Integer.parseInt(p.getProperty("redis.pool.maxActive"));
MAX_IDLE = Integer.parseInt(p.getProperty("redis.pool.maxIdle"));
MAX_WAIT = Integer.parseInt(p.getProperty("redis.pool.maxWait"));
TEST_ON_BORROW = Boolean.parseBoolean(p.getProperty("redis.pool.testOnBorrow"));
TEST_ON_RETURN = Boolean.parseBoolean(p.getProperty("redis.pool.testOnReturn"));
log.info("redis config load Completed。");
in.close();
in=null;
}else{
log.error("redis.properties is not found!");
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
SerializeUtil.java
package com.fants.redis;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
public class SerializeUtil {
/**
* 序列化
*
* @param object
* @return
*/
public static byte[] serialize(Object object) {
ObjectOutputStream oos = null;
ByteArrayOutputStream baos = null;
try {
// 序列化
baos = new ByteArrayOutputStream();
oos = new ObjectOutputStream(baos);
oos.writeObject(object);
byte[] bytes = baos.toByteArray();
return bytes;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 反序列化
*
* @param bytes
* @return
*/
public static Object unserialize(byte[] bytes) {
ByteArrayInputStream bais = null;
try {
// 反序列化
bais = new ByteArrayInputStream(bytes);
ObjectInputStream ois = new ObjectInputStream(bais);
return ois.readObject();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
redis.properties
#\u63A7\u5236\u4E00\u4E2Apool\u53EF\u5206\u914D\u591A\u5C11\u4E2Ajedis\u5B9E\u4F8B\uFF0C\u901A\u8FC7pool.getResource()\u6765\u83B7\u53D6\uFF1B\u5982\u679C\u8D4B\u503C\u4E3A-1\uFF0C\u5219\u8868\u793A\u4E0D\u9650\u5236\uFF1B\u5982\u679Cpool\u5DF2\u7ECF\u5206\u914D\u4E86maxActive\u4E2Ajedis\u5B9E\u4F8B\uFF0C\u5219\u6B64\u65F6pool\u7684\u72B6\u6001\u5C31\u6210exhausted\u4E86\uFF0C\u5728JedisPoolConfig redis.pool.maxActive=1024 #\u63A7\u5236\u4E00\u4E2Apool\u6700\u591A\u6709\u591A\u5C11\u4E2A\u72B6\u6001\u4E3Aidle\u7684jedis\u5B9E\u4F8B\uFF1B redis.pool.maxIdle=200 #\u8868\u793A\u5F53borrow\u4E00\u4E2Ajedis\u5B9E\u4F8B\u65F6\uFF0C\u6700\u5927\u7684\u7B49\u5F85\u65F6\u95F4\uFF0C\u5982\u679C\u8D85\u8FC7\u7B49\u5F85\u65F6\u95F4\uFF0C\u5219\u76F4\u63A5\u629B\u51FAJedisConnectionException\uFF1B redis.pool.maxWait=1000 #\u5728borrow\u4E00\u4E2Ajedis\u5B9E\u4F8B\u65F6\uFF0C\u662F\u5426\u63D0\u524D\u8FDB\u884Calidate\u64CD\u4F5C\uFF1B\u5982\u679C\u4E3Atrue\uFF0C\u5219\u5F97\u5230\u7684jedis\u5B9E\u4F8B\u5747\u662F\u53EF\u7528\u7684\uFF1B redis.pool.testOnBorrow=true #\u5728return\u7ED9pool\u65F6\uFF0C\u662F\u5426\u63D0\u524D\u8FDB\u884Cvalidate\u64CD\u4F5C\uFF1B redis.pool.testOnReturn=true #ip redis.ip=localhost #port redis.port=6379 #password redis.password=myredis