貌似找到原因了:
the app uses the @WebServlet annotation to give URL patterns to servlets, and will only run in Tomcat 7 or other servlet 3.0 containers. It will not run in Tomcat 6.
而eclipse新建servlet时,会自动在代码中生成@WebServlet annotation!
那我们如果项配置web.xml时怎么办呢?
例如,配置一个- <servlet>
- <servlet-name>ServletDemo5</servlet-name>
- <servlet-class>com.tiankong.servlet.ServletDemo5</servlet-class>
-
- <init-param>
- <param-name>myParam</param-name>
- <param-value>paramValue</param-value>
- </init-param>
-
- </servlet>
复制代码 如果自己在下面这个web.xml里配的话,我运行结果是无效- <?xml version="1.0" encoding="UTF-8"?>
- <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
- <display-name>ch06</display-name>
- <welcome-file-list>
- <welcome-file>index.html</welcome-file>
- <welcome-file>index.htm</welcome-file>
- <welcome-file>index.jsp</welcome-file>
- <welcome-file>default.html</welcome-file>
- <welcome-file>default.htm</welcome-file>
- <welcome-file>default.jsp</welcome-file>
- </welcome-file-list>
- </web-app>
复制代码 |