ModelAndView如何将值传送到JSP页面呢？

SpringMVC使用ModelAndView传值的本质:
  将传入的值放入到request对象中
  然后在相对应的jsp中使用EL表达式将值取出来展示或处理

方式一:直接将值和路径放到构造方法中返回

@RequestMapping(value = "/home")  
public ModelAndView home(HttpServletRequest request, HttpServletResponse response){  
	listlist list=new ArrayList();  
	list.add("java265.com-1");  
	list.add("java265.com-3");  
	list.add("java265.com-2");  
	return new ModelAndView("back/index", "list", list);//直接将值和路径放到构造方法中返回  
}

方式二:使用ModelAndView的addObject方法返回list

@RequestMapping(value = "/home")  
public ModelAndView home(HttpServletRequest request, HttpServletResponse response){  
    Listlist list=new ArrayList();  
    list.add("java265.com-1");  
    list.add("java265.com-2");  
    list.add("java265.com-3");  
    ModelAndView m=new ModelAndView();  
    m.setViewName("back/index");//返回路径  
    m.addObject("list", list);//使用ModelAndView的addObject方法将list放进去  
    return m;  
} 

方式三:使用ModelAndView的addObject方法返回map

@RequestMapping(value = "/home")  
public ModelAndView home(HttpServletRequest request, HttpServletResponse response){  
	Map map=new HashMap();  
	map.put("a", "Java265---1");  
	map.put("b", "java265.com-2");  
	ModelAndView mav=new ModelAndView();  
	mav.setViewName("back/index");//返回路径  
	mav.addObject("map", map);  
	return mav;
}

方式四:ModelAndView返回多个对象

@RequestMapping(value = "/home")  
public ModelAndView home(HttpServletRequest request, HttpServletResponse response){  
    Map map=new HashMap();  
	map.put("a", "Java265---1");  
	map.put("b", "java265.com-2");  
    return new ModelAndView("back/index","map", map).addObject("msg", "我要返回值");  
}

//controller.java
@RequestMapping("/test")
public ModelAndView test(){
    ModelAndView mav=new ModelAndView("hello");
    mav.addObject("time", new Date());
    mav.getModel().put("name", "caoyc");
    return mav;
}

//jsp页面
time:${requestScope.time} 
 name:${name }

//后端代码
@RequestMapping("/index")
public ModelAndView page() {
      ModelAndView view = new ModelAndView("index.jsp");
      view.addObject("parameter1", "java教程网www.java265.com");
      return view;
}
//js要写在jsp中
<script>
      var par =${parameter1};
      console.log(par);//打印'随便写点东西'
</script>
//jsp页面，加载页面时候,将参数直接赋值给标签
<input type="hidden" value="${parameter1}">