Servlet（五）web.xml常用的一些配置

标签：init-param   context-param   java ee   load-on-startup   init   

（1）lode-on-startup，该Servlet会在项目启动时被调用（主要调用起init方法，为安全着想，一般不应该为该Servlet建立URL映射），一般用作预处理一些数据，或者配合多线程建立定时任务

    <servlet><pre name="code" class="html"><span style="font-family:Arial, Helvetica, sans-serif;">               </span><span style="font-family:SimSun;font-size:12px;"> <servlet-name>FirstServlet</servlet-name></span>

    <servlet>
        <servlet-name>FirstServlet</servlet-name>
        <servlet-class>com.hunhun.FirstServlet</servlet-class>
        <init-param>
          <param-name>encoding</param-name>
          <param-value>utf-8</param-value>
        </init-param>
    </servlet>

    2.1 多个init-param

    <servlet>
        <servlet-name>FirstServlet</servlet-name>
        <servlet-class>com.hunhun.FirstServlet</servlet-class>
        <init-param>
          <param-name>encoding</param-name>
          <param-value>utf-8</param-value>
        </init-param>
        <init-param>
          <param-name>author</param-name>
          <param-value>hunhun</param-value>
        </init-param>
        <init-param>
          <param-name>versioon</param-name>
          <param-value>1.0</param-value>
        </init-param>
    </servlet>

Enumeration<String> names = this.getServletConfig().getInitParameterNames();
      while(names.hasMoreElements()){
      	//name为每个init-param名字
      	String name=names.nextElement();
      }

    <servlet>
        <servlet-name>FirstServlet</servlet-name>
        <servlet-class>com.hunhun.FirstServlet</servlet-class>
        <init-param>
          <param-name>encoding</param-name>
          <param-value>utf-8</param-value>
        </init-param>
        <init-param>
          <param-name>author</param-name>
          <param-value>hunhun</param-value>
        </init-param>
        <init-param>
          <param-name>versioon</param-name>
          <param-value>1.0</param-value>
        </init-param>
    </servlet>
    <context-param>
          <param-name>date</param-name>
          <param-value>2011-12-3 10:30:24</param-value>
    </context-param>

Servlet（五）web.xml常用的一些配置

标签：init-param   context-param   java ee   load-on-startup   init   

原文地址：http://blog.csdn.net/hunhunpanda/article/details/41170053