刪除註冊表項返回空 - 不知道爲什麼

Question

 for (String path : regPath) { 
        if (WinRegistry.readStringSubKeys(WinRegistry.HKEY_CURRENT_USER, path) == null) { 
         System.out.println(path + " was null."); 
         continue; 
        } 

        List<String> ls = WinRegistry.readStringSubKeys(WinRegistry.HKEY_CURRENT_USER, path); 
        if (ls == null || ls.isEmpty()) { 
         return; 
        } else { 
         for (String sub : ls) { 
          sub = path + "\\" + sub; 
          System.out.println(sub); 
          if (WinRegistry.readStringSubKeys(WinRegistry.HKEY_CURRENT_USER, sub) == null) { 
           System.out.println(path + " was null."); 
           continue; 
          } 
          ls = WinRegistry.readStringSubKeys(WinRegistry.HKEY_CURRENT_USER, sub); 
          if (ls == null || ls.isEmpty()) { 
           return; 
          } else { 
           for (String subKey : ls) { 
            subKey = sub + subKey; 
            System.out.println(subKey); 
           } 
          } 

          System.out.println(sub); 
         } 
        } 
       } 

從我的答案之一，我想出了這個！我怎樣才能讓它通過給定路徑的所有鍵？

我需要從最後一個活動觀衆清除所有信息，here它給你，我需要刪除註冊表值。

Answer 1

去除註冊表項的API是WinRegistry.deleteKey(int hkey, String key)。 但是如果子密鑰存在，它會拋出java.lang.IllegalArgumentException: rc=5 key=???。

對於刪除註冊表鍵遞歸，你應該實現這樣的方法：

private static void deleteKeyAndSub(int hkey, String key) 
    throws IllegalArgumentException, IllegalAccessException, InvocationTargetException { 
    List<String> ls = WinRegistry.readStringSubKeys(hkey, key); 
    if(ls == null) { 
    return; 
    } else if(ls.isEmpty()) { 
    WinRegistry.deleteKey(hkey, key); 
    } else { 
    for (String subkey : ls) { 
     subkey = key+"\\"+subkey; 
     //System.out.println("delete subkey - "+subkey); 
     deleteKeyAndSub(hkey, subkey); 
    } 
    WinRegistry.deleteKey(hkey, key); 
    } 
}