SpringMVC之返回頁面資料

1. HttpServletRequest request 直接使用request.setAttribute(Key, Value);

jsp頁面：

<form action="user/add1.do" method="post">
	賬號：<input  type="text" name="userNumber" /><br/>
	密碼：<input  type="text" name="passWord" /><br/>
	<input type="submit" value="提交"/>
</form>
${user }

Controller:

@RequestMapping(value="/add1.do")
	public String add(HttpServletRequest request){
	
		String userNumber = request.getParameter("userNumber");
		String passWord = request.getParameter("passWord");
		String str = "userNumber:"+userNumber+" passWord:"+passWord;
		
		request.setAttribute("user", str);
		
		return "user_add1";
	}

2. 使用ModelAndView

jsp頁面：

<form action="user/add2.do" method="post">
	<input type="submit" value="提交"/>
</form>
${userId }---${userName }

Controller:

@RequestMapping(value="/add2.do")
	public ModelAndView add2(){
		
		ModelAndView mav = new ModelAndView("user_add2");
		mav.addObject("userId", 1001);
		mav.addObject("userName", "張三");
		
		return mav;
	}

3. 使用Model model
jsp頁面：

<form action="user/add3.do" method="post">

	<input type="submit" value="提交"/>
</form>
${personId }----${personName }

Controller:

@RequestMapping(value="/add3.do")
	public String add3(Model model){
		
		model.addAttribute("personId", 9527);
		model.addAttribute("personName", "唐伯虎");
		
		return "user_add3";
	}

4. 使用Map

jsp頁面：

<h1>使用者資訊新增4</h1>
<form action="user/add4.do" method="post">
	編號：<input  type="text" name="personId" /><br/>
編號：<input  type="text" name="userName" /><br/>
	<input type="submit" value="提交"/>
</form>
${personId }----${personName }<br/>
${userName }

Controller:

@RequestMapping(value="/add4.do")
	public String add4(Integer personId,String userName,Map map){
		
		System.out.println(personId);
		System.out.println(userName);
		map.put("personId", 9527);
		map.put("personName", "唐伯虎");
		
		return "user_add4";
	}