java如何访问同一控制器中另一个RequestMapping的模型？

Question

如何使控制器中与RequestMapping关联的对象能够被返回到同一视图页的同一控制器中的另一个RequestMapping访问？多谢各位

以下是我的示例代码，它只放在一个控制器中：

@RequestMapping(value="firstMapping",method=RequestMethod.POST)
public ModelAndView firstMapping (HttpServletRequest request) {

    //myObject is processed here

    ModelAndView mav = new ModelAndView();
    mav.setViewName("samplepage");
    mav.addObject("myObject",myObject); //How do I pass this object to the mapping below?
    return mav;
}

@RequestMapping(value="secondMapping",method=RequestMethod.POST)
public ModelAndView secondMapping (HttpServletRequest request) {

    //I want to do something else here but I need the object from
    //the mapping above. For example myObject2 is processed here

    ModelAndView mav = new ModelAndView();
    mav.setViewName("samplepage");

    mav.addObject("myObject",myObject);
    mav.addObject("myObject2",myObject2);
    return mav;
}

Answer 1

在第一种方法中，在设置属性后，您应该将请求转发给第二种方法，而不是设置视图。在第二种方法中设置视图。通过使用此方法，请求在处理后被转发到第二个方法

@RequestMapping(value="firstMapping",method=RequestMethod.POST)
public ModelAndView firstMapping (HttpServletRequest request) {
    Object myObject=new Object();
   request.setAttribute("myObject",myObject);
    return "forward:/secondMapping";
}

您还可以使用ModelandView将对象从方法1传送到方法2