public static final int SESSION TIMEOUT = 100 * 120 * 120;
时间: 2024-04-23 07:22:23 浏览: 13
这段代码定义了一个名为SESSION_TIMEOUT的int类型常量,它的值为100 * 120 * 120,即12,000的秒数。这个常量的作用可能是用于设置某个会话的超时时间,如果一个会话超过12,000秒(即3小时又20分钟)没有任何操作,那么这个会话就会自动失效。和之前的代码不同的地方在于,这里是先乘以100,再乘以120,相当于先计算出2小时的分钟数(即100分钟),再将其乘以120转换为秒数。
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public static final int SESSION TIMEOUT = 1000 * 60 * 120;
这段代码定义了一个名为SESSION_TIMEOUT的int类型常量,它的值为1000 * 60 * 120,即2小时的毫秒数。这个常量的作用可能是用于设置某个会话的超时时间,如果一个会话超过2小时没有任何操作,那么这个会话就会自动失效。和之前的代码不同的地方在于,这里是先乘以60再乘以120,相当于先计算出2小时的分钟数,再将其转换为毫秒数。
Java语言实现redis实现session共享代码案例
Sure, I can help you with that. Here is an example code for implementing Redis to share sessions in Java:
```
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;
public class RedisSessionManager {
private static final String REDIS_HOST = "localhost";
private static final int REDIS_PORT = 6379;
private static final int MAX_IDLE = 10;
private static final int MAX_TOTAL = 30;
private static final int MAX_WAIT_MILLIS = 10000;
private static final int TIMEOUT = 1000;
private static final String SESSION_PREFIX = "session:";
private static final Map<String, HttpSession> sessions = new HashMap<>();
private static JedisPool jedisPool = null;
static {
JedisPoolConfig poolConfig = new JedisPoolConfig();
poolConfig.setMaxIdle(MAX_IDLE);
poolConfig.setMaxTotal(MAX_TOTAL);
poolConfig.setMaxWaitMillis(MAX_WAIT_MILLIS);
jedisPool = new JedisPool(poolConfig, REDIS_HOST, REDIS_PORT, TIMEOUT);
}
public static HttpSession createSession() {
Jedis jedis = jedisPool.getResource();
String sessionId = SESSION_PREFIX + UUID.randomUUID().toString();
HttpSession session = new RedisHttpSession(sessionId, jedis);
sessions.put(sessionId, session);
return session;
}
public static HttpSession getSession(String sessionId) {
HttpSession session = sessions.get(sessionId);
if (session == null) {
Jedis jedis = jedisPool.getResource();
session = new RedisHttpSession(sessionId, jedis);
sessions.put(sessionId, session);
}
return session;
}
public static void removeSession(String sessionId) {
sessions.remove(sessionId);
Jedis jedis = jedisPool.getResource();
jedis.del(sessionId);
jedis.close();
}
}
```
This code uses the Jedis library to connect to Redis and store session data. It provides methods for creating, getting and removing sessions. The sessions are stored in a HashMap in memory for fast access, but are also persisted to Redis so they can be shared across multiple servers.
I hope this helps!