Spring MVC 向页面传值 Map、Model和ModelMap

<p>除了使用<span style="color: #ff0000">ModelAndView</span>方式外。还可以使用<span style="color: #ff0000">Map、Model、ModelMap</span>来向前台页面创造</p>
<p>使用后面3种方式，都是在方法参数中，指定一个该类型的参数。例如：</p>
<p>java类中</p>
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<pre>@RequestMapping("/test"<span style="color: #000000">)
</span><span style="color: #0000ff">public</span> String test(Map<String,Object><span style="color: #000000"> map,Model model,ModelMap modelMap){
    map.put(</span>"names", Arrays.asList("snake","jack","rose"<span style="color: #000000">));
    model.addAttribute(</span>"time", <span style="color: #0000ff">new</span><span style="color: #000000"> Date());
    modelMap.addAttribute(</span>"city", "hangzhou"<span style="color: #000000">);
    modelMap.put(</span>"gender", "male"<span style="color: #000000">);
    </span><span style="color: #0000ff">return</span> "hello"<span style="color: #000000">;
}</span></pre>
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<p>jsp页面内容：</p>
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<pre>1、time:${requestScope.time} <span style="color: #0000ff"><</span><span style="color: #800000">br</span><span style="color: #0000ff">/></span><span style="color: #000000">
2、names:${requestScope.names }</span><span style="color: #0000ff"><</span><span style="color: #800000">br</span><span style="color: #0000ff">/></span><span style="color: #000000">
3、city:${requestScope.city }</span><span style="color: #0000ff"><</span><span style="color: #800000">br</span><span style="color: #0000ff">/></span><span style="color: #000000">
4、gender:${requestScope.gender }<br></span></pre>
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