学习了,待考证 [解决办法] Servlet specification: 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.
If the value is a negative integer, or the element is not present, the container is free to load the servlet whenever it chooses 准确的翻译应该说如果是负值，容器可以随意选择什么时候加载 [解决办法] 如果为负数，容器可以选择加载Servlet也可以不加载,由容器决定
