Java如何读取WEB应用中的资源

import java.io.IOException;  import java.io.InputStream;  import javax.servlet.ServletContextEvent;  import javax.servlet.ServletContextListener;  public class MyListener implements ServletContextListener {       @Override     public void contextDestroyed(ServletContextEvent arg0) {      }       @Override     public void contextInitialized(ServletContextEvent event) {          //指定要读取的文件路径,此处的test.txt放在工程的web目录下面          InputStream is = MyListener.class.getResourceAsStream("/../../web/test.txt");          if(is!=null){              byte []bytes = new byte[1024];              try {                  while(is.read(bytes)>0){                      System.out.println(bytes.toString());                  }              } catch (IOException e) {                  e.printStackTrace();              }finally{                  if(is!=null){                      try {                          is.close();                      } catch (IOException e) {                          e.printStackTrace();                      }                  }              }          }      }   }