SpringMVC系列之ModelAndView重定向带参数

public ModelAndView toPage(){
	....
	return new ModelAndView(new RedirectView("login.do"));
}

public ModelAndView toPage(){
	....
	Map<String,Object> reqParam = new HashMap<String,Object>(16);
	reqParam.put("param","test");
	return new ModelAndView(new RedirectView("login.do"),reqParam);
}

public class ModelAndView{
....
 public ModelAndView(View view, Map<String, ?> model) {
        this.view = view;
        if (model != null) {
            this.getModelMap().addAllAttributes(model);
        }
  }
}
....

public ModelMap getModelMap() {
        if (this.model == null) {
            this.model = new ModelMap();
        }

        return this.model;
    }

public class ModelMap extends LinkedHashMap<String, Object> {
    public ModelMap() {
    }
    ....
}