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在servlet的配置当中,<load-on-startup>5</load-on-startup>的含义是: 标记容器是否在启动的时候就加载这个servlet。 当值为0或者大于0时,表示容器在应用启动时就加载这个servlet; 当是一个负数时或者没有指定时,则指示容器在该servlet被选择时才加载。 正数的值越小,启动该servlet的优先级越高。
The load-on-startup element indicates that this servlet should be loaded (instantiated and have its init() called) on the startup of the web application. The optional contents of these element must be an integer indicating the order in which the servlet should be loaded. If the value is a negative integer, or the element is not present, the container is free to load the servlet whenever it chooses. If the value is a positive integer or 0, the container must load and initialize the servlet as the application is deployed. The container must guarantee that servlets marked with lower integers are loaded before servlets marked with higher integers. The container may choose the order of loading of servlets with the same load-on-start-up value. example: <servlet> |
正值设置的很大的时候,还有必要去设置吗?
Servlet加载机制详解
本文详细解释了在Servlet配置中<load-on-startup>元素的作用及其数值的意义。阐述了不同数值设定对于Servlet加载时机的影响,并说明了正数值大小与加载优先级的关系。
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