try { 
      BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream("wkdir.txt"))); 
      String str; 
      while ((str = in.readLine()) != null) { 
        System.out.println(str); 
      } 
      in.close(); 
    } catch (IOException e) { 
    } 

try { 
      InputStream stream = ClassLoader.getSystemResourceAsStream("fileinjar.txt"); 
      BufferedReader in = new BufferedReader(new InputStreamReader(stream)); 
      String str; 
      while ((str = in.readLine()) != null) { 
        System.out.println(str); 
      } 
      in.close(); 
    } catch (IOException e) { 
    } 

try { 
 
      Enumeration resourceUrls = Thread.currentThread().getContextClassLoader().getResources("fileinjar.txt"); 
 
      while (resourceUrls.hasMoreElements()) { 
        URL url = (URL) resourceUrls.nextElement(); 
        System.out.println(url); 
 
        BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream())); 
        String str; 
        while ((str = in.readLine()) != null) { 
          System.out.println(str); 
        } 
        in.close(); 
 
      } 
 
    } catch (IOException e) { 
    } 

try { 
 
      URL url = new URL("http://blog.csdn.net/kkdelta"); 
      System.out.println(url); 
 
      BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream())); 
      String str; 
      while ((str = in.readLine()) != null) { 
        System.out.println(str); 
      } 
      in.close(); 
 
    } catch (IOException e) { 
      e.printStackTrace(); 
    } 

try { 
 
      URL url = (URL) getServletContext().getResource("/WEB-INF/webinffile.txt"); 
      // URL url = (URL)req.getSession().getServletContext().getResource("/WEB-INF/webinffile.txt"); 
      System.out.println(url); 
 
      BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream())); 
      String str; 
      while ((str = in.readLine()) != null) { 
        System.out.println(str); 
      } 
      in.close(); 
 
    } catch (IOException e) { 
      e.printStackTrace(); 
    }