javaweb servlet路径映射；JSP路径映射； web默认访问页配置

<welcome-file-list>
<welcome-file>/index</welcome-file>
</welcome-file-list>

2 servlet路径映射 以及 初始化参数配置

<servlet>
<servlet-name>index</servlet-name>
<servlet-class>com.zemeng.index</servlet-class>
配置servelt的初始化参数key-value
<init-param>
<param-name>key1</param-name>
<param-value>value1</param-value>
</init-param>
<init-param>
<param-name>key2</param-name>
<param-value>value2</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>index</servlet-name>
<url-pattern>/index</url-pattern>
</servlet-mapping>

3. JSP路径映射

<servlet>
<servlet-name>test</servlet-name>
<jsp-file>/test
4000
.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>test</servlet-name>
<url-pattern>/test</url-pattern>
</servlet-mapping>