变动
自Jedis3.0版本后jedisPool.returnResource(final Jedis resource)遭弃用,官方重写了Jedis的close()方法用以代替
代码如下：
/**
* @deprecated starting from Jedis 3.0 this method will not be exposed.
* Resource cleanup should be done using @see {@link redis.clients.jedis.Jedis#close()}
*/
@Override
@Deprecated
public void returnResource(final Jedis resource) {
if (resource != null) {
try {
resource.resetState();
returnResourceObject(resource);
} catch (Exception e) {
returnBrokenResource(resource);
throw new JedisException("Could not return the resource to the pool", e);
}
}
}
官方建议应用redis.clients.jedis#Jedis的close方法进行资源回收，官方代码如下：
@Override
public void close() {
if (dataSource != null) {
if (client.isBroken()) {
this.dataSource.returnBrokenResource(this);
} else {
this.dataSource.returnResource(this);
}
} else {
client.close();
}
}
示例
Jedis3.0之前 使用jedisPool.returnResource(jedis)
import com.alibaba.fastjson.JSON;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import java.util.ResourceBundle;
public class RedisClient {
/**
* 池化管理jedis链接池
*/
public static JedisPool jedisPool;
static {
//读取相关的配置
ResourceBundle resourceBundle = ResourceBundle.getBundle("redis");
int maxActive = Integer.parseInt(resourceBundle.getString("redis.pool.maxActive"));
int maxIdle = Integer.parseInt(resourceBundle.getString("redis.pool.maxIdle"));
int maxWait = Integer.parseInt(resourceBundle.getString("redis.pool.maxWait"));
String ip = resourceBundle.getString("redis.ip");
int port = Integer.parseInt(resourceBundle.getString("redis.port"));
JedisPoolConfig config = new JedisPoolConfig();
//设置最大连接数
config.setMaxTotal(maxActive);
//设置最大空闲数
config.setMaxIdle(maxIdle);
//设置超时时间
config.setMaxWaitMillis(maxWait);
//初始化连接池
jedisPool = new JedisPool(config, ip, port);
}
/**
* 向缓存中设置字符串内容
*
* @param key key
* @param value value
* @return
* @throws Exception
*/
public static boolean set(String key, String value) throws Exception {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
jedis.set(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
jedisPool.returnResource(jedis);
}
}
/**
* 向缓存中设置对象
*
* @param key
* @param value
* @return
*/
public static boolean set(String key, Object value) {
Jedis jedis = null;
try {
String objectJson = JSON.toJSONString(value);
jedis = jedisPool.getResource();
jedis.set(key, objectJson);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
jedisPool.returnResource(jedis);
}
}
/**
* 删除缓存中得对象，根据key
*
* @param key
* @return
*/
public static boolean del(String key) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
jedis.del(key);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
jedisPool.returnResource(jedis);
}
}
/**
* 根据key 获取内容
*
* @param key
* @return
*/
public static Object get(String key) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
Object value = jedis.get(key);
return value;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
jedisPool.returnResource(jedis);
}
}
/**
* 根据key 获取对象
*
* @param key
* @return
*/
public static <T> T get(String key, Class<T> clazz) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
String value = jedis.get(key);
return JSON.parseObject(value, clazz);
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
jedisPool.returnResource(jedis);
}
}
}
Jedis3.0之后使用jedis.close()
import com.alibaba.fastjson.JSON;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import java.util.ResourceBundle;
public class RedisClient {
/**
* 池化管理jedis链接池
*/
public static JedisPool jedisPool;
static {
//读取相关的配置
ResourceBundle resourceBundle = ResourceBundle.getBundle("redis");
int maxActive = Integer.parseInt(resourceBundle.getString("redis.pool.maxActive"));
int maxIdle = Integer.parseInt(resourceBundle.getString("redis.pool.maxIdle"));
int maxWait = Integer.parseInt(resourceBundle.getString("redis.pool.maxWait"));
String ip = resourceBundle.getString("redis.ip");
int port = Integer.parseInt(resourceBundle.getString("redis.port"));
JedisPoolConfig config = new JedisPoolConfig();
//设置最大连接数
config.setMaxTotal(maxActive);
//设置最大空闲数
config.setMaxIdle(maxIdle);
//设置超时时间
config.setMaxWaitMillis(maxWait);
//初始化连接池
jedisPool = new JedisPool(config, ip, port);
}
/**
* 向缓存中设置字符串内容
*
* @param key key
* @param value value
* @return
* @throws Exception
*/
public static boolean set(String key, String value) throws Exception {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
jedis.set(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
jedis.close();
}
}
/**
* 向缓存中设置对象
*
* @param key
* @param value
* @return
*/
public static boolean set(String key, Object value) {
Jedis jedis = null;
try {
String objectJson = JSON.toJSONString(value);
jedis = jedisPool.getResource();
jedis.set(key, objectJson);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
jedis.close();
}
}
/**
* 删除缓存中得对象，根据key
*
* @param key
* @return
*/
public static boolean del(String key) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
jedis.del(key);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
jedis.close();
}
}
/**
* 根据key 获取内容
*
* @param key
* @return
*/
public static Object get(String key) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
Object value = jedis.get(key);
return value;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
jedis.close();
}
}
/**
* 根据key 获取对象
*
* @param key
* @return
*/
public static <T> T get(String key, Class<T> clazz) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
String value = jedis.get(key);
return JSON.parseObject(value, clazz);
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
jedis.close();
}
}
}
参考
1. JedisPool.returnResource()遭弃用
2. Jedis-returnResource使用注意事项