今天看了看spring对于视图解析的源码，发现还不是那些思想，internalResourceView里的一个渲染方法

protected void exposeModelAsRequestAttributes(Map<String, Object> model, HttpServletRequest request) throws Exception {
   for (Map.Entry<String, Object> entry : model.entrySet()) {
      String modelName = entry.getKey();
      Object modelValue = entry.getValue();
      if (modelValue != null) {
         request.setAttribute(modelName, modelValue);
         if (logger.isDebugEnabled()) {
            logger.debug("Added model object '" + modelName + "' of type [" + modelValue.getClass().getName() +
                  "] to request in view with name '" + getBeanName() + "'");
         }
      }
      else {
         request.removeAttribute(modelName);
         if (logger.isDebugEnabled()) {
            logger.debug("Removed model object '" + modelName +
                  "' from request in view with name '" + getBeanName() + "'");
         }
      }
   }
}

这个方法就是对视图的渲染，所谓jsp也无非就是对java代码的解释，所以不得不佩服这样简洁的渲染