摘要:
Executor、ExecutorService、Executors三者的区别: 层次关系: public interface ExecutorService extends Executor {} public abstract class AbstractExecutorService impl 阅读全文
摘要:
request.getSession(true)和request.getSession(false)的区别 request.getSession(true):若存在会话则返回该会话,否则新建一个会话。request.getSession(false):若存在会话则返回该会话,否则返回NULL 当向S 阅读全文