Java Web Fragment在项目中使用方法详解

<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<web-fragment id=\"WebFragment_ID\" version=\"3.1\"
  xmlns=\"http://xmlns.jcp.org/xml/ns/javaee\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"
  xsi:schemaLocation=\"http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-fragment_3_1.xsd\">
  <display-name>Test</display-name>
  <name>Test</name>

  <listener>
  <!-- 配置一个监听器 -->
  <listener-class>myListenner.DEMO1</listener-class>
  </listener>
  <!-- 表示一个执行序列 -->
  <ordering>
    <!-- 表示在项目所有之前进行初始化 -->
    <before><others/></before>
  </ordering>
</web-fragment>

package myListenner;

import javax.servlet.ServletRequestEvent;
import javax.servlet.ServletRequestListener;

public class DEMO1 implements ServletRequestListener{

  @Override
  public void requestDestroyed(ServletRequestEvent sre) {
    // TODO Auto-generated method stub
    System.out.println(\"监听器销毁了》》》》》》》》》》》》》\");
  }

  @Override
  public void requestInitialized(ServletRequestEvent sre) {
    System.out.println(\"监听器初始化完成了》》》》》》》》》》\");
  }
}