---------------ConfigServlet.java-----------
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
request.setCharacterEncoding("GB2312");
response.setContentType("text/html;charset=gb2312");
PrintWriter out = response.getWriter();
ServletConfig config = getServletConfig();
//getInitParameter方法
String username = config.getInitParameter("username");
String password = config.getInitParameter("password");
out.print("username--"+username);
out.print("password--"+password);
//集合方法
Enumeration<?> e = config.getInitParameterNames();
while(e.hasMoreElements()){
String pusername=(String) e.nextElement();
String ppassword = config.getInitParameter(pusername);
out.print("<br/><b>"+pusername+"</b> ; ");
out.print("------"+ppassword);
}
out.close();
}
----------------------web.xml----------------
<?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" 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>ServletConfig</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>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>ConfigServlet</servlet-name>
<servlet-class>com.ConfigServlet</servlet-class>
<init-param>
<param-name>username</param-name>
<param-value>jspuser</param-value>
</init-param>
<init-param>
<param-name>password</param-name>
<param-value>123456</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>ConfigServlet</servlet-name>
<url-pattern>/servlet/ConfigServlet</url-pattern>
</servlet-mapping>
</web-app>