web.xml中Servlet参数初始化

<context-param>
<param-name>param1</param-name>
<param-value>value1</param-value>
</context-param>
<context-param>
<param-name>param2</param-name>
<param-value>value2</param-value>
</context-param>

<servlet>
 <!--name可以是任意的，但一般是类名-->
<servlet-name>MyServlet</servlet>
 <!--class用于指定你的servlet存放的路径-->
<servlet-class>com.web.MyServlet</servlet-class>
<!--设置各自servlet的初始化参数-->
 <!--参数1-->
<init-param>
<param-name>driver</param-name>
<param-value>com.mysql.jdbc.Driver</param-value>
</init-param>
 <!--参数2-->
<init-param>
<param-name>url</param-name>
<param-value>jdbc:mysql://localhost:3306/mysql</param-value>
</init-param>

</servlet>