如何处理Java里的DOM异常

你可能想要提取出条件异常的处理（方法），并将它放置到它自己的方法里，甚至是它自己的类里。那样的话，你就可以在你的代码里放入更加简单的异常处理机制。例如，我们可以创建一个叫做DOMExceptionHandler的新类，如Listing B所示：

Listing B: DOMExceptionHandler.Java

import org.w3c.dom.*;

public class DOMExceptionHandler {
    public static void HandleDOMException(DOMException e) {
        if (e != null) {
            switch(e.code) {
                case DOMException.DOMSTRING_SIZE_ERR:
                    break;
                case DOMException.HIERARCHY_REQUEST_ERR:
                    break;
                case DOMException.INDEX_SIZE_ERR:
                    break;
                case DOMException.INUSE_ATTRIBUTE_ERR:
                    break;
                case DOMException.INVALID_ACCESS_ERR:
                    break;
                case DOMException.INVALID_CHARACTER_ERR:
                    System.out.println("There is an invalid character");
                    break;
                case DOMException.INVALID_MODIFICATION_ERR:
                    break;
                case DOMException.INVALID_STATE_ERR:
                    break;
                case DOMException.NAMESPACE_ERR:
                    break;
                case DOMException.NO_DATA_ALLOWED_ERR:
                    break;
                case DOMException.NO_MODIFICATION_ALLOWED_ERR:
                    break;
                case DOMException.NOT_FOUND_ERR:
                    break;
                case DOMException.NOT_SUPPORTED_ERR:
                    break;
                case DOMException.SYNTAX_ERR:
                    break;
                case DOMException.WRONG_DOCUMENT_ERR:
                    break;
                default:
                    System.out.println("Unknown DOM exception");
                    break;
            }
        }
    }
}