src/org/nutz/mvc/Mvcs.java
@SuppressWarnings("unchecked")
    public static Map<String, String> getMessages(ServletRequest req) {
        return (Map<String, String>) req.getAttribute(MSG);
    }
@SuppressWarnings("unchecked")
    public static Map<String, String> getMessages(ServletRequest req) {
        return (Map<String, String>) req.getAttribute(MSG);
    }
获取当前请求对象的字符串表

@param req
请求对象
@return 字符串表