/**
     * parse XML file
     * @param inputStream
     * @return
     */
    public static Element parseXml(InputStream inputStream) {

        try {
        	
        	SAXReader reader = new SAXReader();
        	Document document = reader.read(inputStream);
        	Element root = document.getRootElement(); // parse XML root.
        	//如果是多root的xml, 就这样取
        	List rootList = document.getRootElements();
        	//然后遍历出来就ok啦。。
        	
        	//取得 节点内容 请参看 Element 
        	root.element("节点名称").getText();
        	//或者
        	root.elementText("节点名称");

        	return root;

        } catch (Exception e) {
            e.printStackTrace();
        }
		return null;
    }
    /**
     * Http:: doGet() 
     * @param action
     * @return html InputStream
     * @throws IOException
     */
    public static InputStream doGet(String action) throws IOException {
        URL url = new URL(action);
        URLConnection uc = url.openConnection();
        InputStream is = uc.getInputStream();
		return is;
    }