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                前后端數據的交互也可以使用Servlet的HttpServletRequest和HttpSession。 <br/> 使用步驟如下: **1. controller層接收與發送數據** ```java @RequestMapping("/v4/get/student") public String getStudent04(HttpServletRequest request, HttpSession session, @RequestParam("name") String name) { //添加需要傳遞到前端的數據 request.setAttribute("name", name); request.setAttribute("age", 25); session.setAttribute("gender", "男生"); //返回視圖名稱 return "student"; } ``` **2. 視圖層接收數據:`webapp/WEB-INF/views/user.jsp`** ```html <h1>${ name },${ age }, ${ gender }</h1> ``` **3. 測試** 訪問 http://localhost:8080/mvc/v4/get/student?name=張三 ,前端會看到如下數據。 ``` 張三,25, 男生 ```
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