关于ThreadLocal

最新推荐文章于 2024-08-14 17:33:07 发布

原创最新推荐文章于 2024-08-14 17:33:07 发布 · 431 阅读

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#thread

本文介绍了ThreadLocal的工作原理，展示了如何使用ThreadLocal为每个线程提供独立的数据副本，并通过一个数据库连接池的例子来说明其实际用途。

Thread-Local provides get and set access or methods that maintain a separate copy of the value for each thread that uses it, so a get returns the most recent value passed to set from the currently executing thread.

比如：

private static ThreadLocal<Connection> connectionHolder
    = new ThreadLocal<Connection>() {
        public Connection initialValue() {
            return DriverManager.getConnection(DB_URL);
} };
public static Connection getConnection() {
    return connectionHolder.get();
}