我正在尝试使用java应用程序中的jedis连接到redis。我正在示例化一个jedispool对象,当我得到资源时,它抛出一个异常,说它不能返回资源。但奇怪的是,如果我只是示例化一个jedis对象,它连接起来没有问题,我可以更改数据。
下面是我的Redis数据库类:
package me.joeleoli.proxylink.database;
import me.joeleoli.proxylink.ProxyLink;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
public class RedisDatabase {
private JedisPool pool;
public RedisDatabase(String host, int port, String password) {
ProxyLink.getInstance().getLogger().info("Attempting to establish Redis connection " + host + ":" + port);
this.pool = new JedisPool(host, port);
try (Jedis jedis = this.pool.getResource()) {
if (password != null && !password.equals("")) {
jedis.auth(password);
}
jedis.select(0);
jedis.close();
}
}
public JedisPool getPool() {
return this.pool;
}
}
我的错误是:
22:16:15 [INFO] [ProxyLink] Attempting to establish Redis connection 127.0.0.1:6379
22:16:15 [WARNING] Exception encountered when loading plugin: ProxyLink
redis.clients.jedis.exceptions.JedisException: Could not return the resource to the pool
at redis.clients.jedis.JedisPool.returnResource(JedisPool.java:106)
at redis.clients.jedis.JedisPool.returnResource(JedisPool.java:12)
at redis.clients.jedis.Jedis.close(Jedis.java:3206)
at me.joeleoli.proxylink.database.RedisDatabase.<init>(RedisDatabase.java:23)
at me.joeleoli.proxylink.ProxyLink.onEnable(ProxyLink.java:71)
at net.md_5.bungee.api.plugin.PluginManager.enablePlugins(PluginManager.java:227)
at net.md_5.bungee.BungeeCord.start(BungeeCord.java:273)
at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:111)
at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15)
Caused by: redis.clients.jedis.exceptions.JedisException: Could not return the resource to the pool
at redis.clients.util.Pool.returnResourceObject(Pool.java:61)
at redis.clients.jedis.JedisPool.returnResource(JedisPool.java:103)
... 8 more
Caused by: java.lang.IllegalStateException: Object has already been returned to this pool or is invalid
at org.apache.commons.pool2.impl.GenericObjectPool.returnObject(GenericObjectPool.java:551)
at redis.clients.util.Pool.returnResourceObject(Pool.java:59)
... 9 more
1条答案
按热度按时间vwkv1x7d1#
代码的问题是调用
jedis.close()
在try with资源块中。try with resource块在退出时关闭资源。因为您已经关闭了资源,所以在块退出之前,您会调用close两次。删除对的呼叫
jedis.close
在块中使用try with resource功能。