Servlet初始化的方法

 
 /**
     * Servlet覆盖初始化方法(片段)
     */
    public void init() throws ServletException
    {
        ServletContext sc = getServletContext();
        String prefix = sc.getRealPath("/");
        String appConfig = getInitParameter("config").trim();
        String logConfig = getInitParameter("log4j");

        //初始化log4j日志参数
        PropertyConfigurator.configure(prefix + logConfig);

        String appConfigPath = prefix + appConfig;
   }

解析xml

    private void praseConfig(String appConfigPath) throws DocumentException
    {

        SAXReader reader = new SAXReader();
        reader.setValidation(false);
        Document doc = reader.read(new File(appConfigPath));
        Element rootElement = doc.getRootElement();

        Element appElement= rootElement.element("appElement");
}