code: private void initFilePool() {
    		String home = config.get("pool-home").toString();
    		try {
    			home = Disks.normalize(home);
    			if (home == null)
    				home = config.get("pool-home").toString();
    			long max = config.containsKey("pool-max") ? ((Number) config.get("pool-max")).longValue() : 2000;
    			if (home.contains("${app.home}")) {
    				try {
    					// 这里引用了Mvcs类, 不太舒服,但应该还是有益处的
    					home = home.replace("${app.home}", Mvcs.getServletContext().getRealPath("/"));
    				} catch (Throwable e) {
    				}
    			}
    			try {
    				pool = NutFilePool.getOrCreatePool(home, max);
    			} catch (Exception e) {
    				// 看看是不是Mvc环境,尝试在WebContent下创建
    				if (!home.startsWith("~/") || Mvcs.getServletContext() == null)
    					throw e;
    				try {
    					String tmp = Mvcs.getServletContext().getRealPath("/") + home.substring(2);
    					pool = NutFilePool.getOrCreatePool(tmp, max);
    					log.info("had created filepool under webapp root path");
    				} catch (Exception e1) {
    					throw e; // 抛出原本的异常好了,哎...
    				}
    			}
    			pool = new SynchronizedFilePool(pool);
    		} catch (Throwable e) {
    			if (log.isWarnEnabled())
    				log.warnf("NutDao FilePool create fail!! Blob and Clob Support is DISABLE!! Home=" + home, e);
    		}
    		isInit = true;
    	}
docs: 初始化文件池，即使初始化失败,也继续执行