jsp或servlet頁面代碼：
復制代碼 代碼如下:
String driver = application. getIni tParameter ("driver") ;
String url = application.getInitParameter("url");
String user = application.getInitParameter("user");
String pass = application.getInitParameter("pass");
web.xml需要讀取的內容：
復制代碼 代碼如下:
<context-param>
<param-name>driver</param-name>
<param-value>com.mysql.jdbc.Driver</param-value>
</context-param>
<context-param>
<param-name>url</param-name>
<param-value>jdbc:mysql://localhost:3306/j2ee</param-value>
</context-param>
<context-param>
<param-name>user</param-name>
<param-value>root</param-value>
</context-param>
<context-param>
<param-name>pass</param-name>
<param-value>32l47</param-value>
</context-param>
