请教一下前辈，ModelMap和ModelAndView的区别在哪里？各适用于什么场景？

Question

@RequestMapping("/index")
public String index(HttpServletRequest request, ModelMap modelMap) {
    WorkerResult<ReturnObject> result =    
        Up366Worker.on(MANAGE_USER_INDEX, request).checkAuthAndExecute(new HttpBaseExecutor<ReturnObject>() {
            @Override
            public ReturnObject execute(ExecutorContext<ReturnObject> context) throws Exception {
                return null;
            }
        });
    if(!result.success()){
        return "/admin/noauth";
    }
    initUserType(modelMap);
    return "/admin/users";
}

Answer 1

ModelMap extends LinkedHashMap , LinkedHashMap extends java.util.HashMap implements java.util.Map , 所以其实ModelMap 也就"是"个Map .

public class ModelAndView {

private Object view;
private ModelMap model;

}

ModelMap modelMap,Model model,Map map
还有你可以试试输出 modelMap == model , modelMap == map