ModelAndView

案例見 public ModelAndView testModelAndView()

@RequestMapping(value="/testModelAndView",method=RequestMethod.GET)public ModelAndView testModelAndView(){ModelAndView mv = new ModelAndView();mv.addObject("myModelAndView",new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));mv.setViewName("ok");return mv;}

debug

結(jié)論

springmvc會將模型數(shù)據(jù)放進了request請求域里面,ModelAndView底層實際就是request.setAttribute(k,v)

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() + "'");}}}}

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