SpringMVC03_模型數據處理
- 原生方法：
@RequestMapping("/request")
public String request(HttpServletRequest request){
User user = new User();
user.setId(11L);
user.setName("陳十三");
request.setAttribute("user",user);
return "view";
}
注：需要servlet-api依賴
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
- SpringMVC框架提供的方法：
@RequestMapping("/map")
public String map(Map<String,User> map){
User user = new User();
user.setId(1L);
user.setName("張三");
map.put("user",user);
return "view";
}
@RequestMapping("/model")
public String model(Model model){
User user = new User();
user.setId(2L);
user.setName("李四");
model.addAttribute("user",user);
return "view";
}
@RequestMapping("/modelAndView")
public ModelAndView modelAndView(){
User user = new User();
user.setId(3L);
user.setName("王五");
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("user",user);
modelAndView.setViewName("view");
return modelAndView;
}
@RequestMapping("/modelAndView2")
public ModelAndView modelAndView2(){
User user = new User();
user.setId(4L);
user.setName("陳六");
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("user",user);
View view = new InternalResourceView("/view.jsp");
modelAndView.setView(view);
return modelAndView;
}
@RequestMapping("/modelAndView3")
public ModelAndView modelAndView3(){
User user = new User();
user.setId(5L);
user.setName("張七");
ModelAndView modelAndView = new ModelAndView("view");
modelAndView.addObject("user",user);
return modelAndView;
}
@RequestMapping("/modelAndView4")
public ModelAndView modelAndView4(){
User user = new User();
user.setId(6L);
user.setName("李八");
View view = new InternalResourceView("/view.jsp");
ModelAndView modelAndView = new ModelAndView(view);
modelAndView.addObject("user",user);
return modelAndView;
}
@RequestMapping("/modelAndView5")
public ModelAndView modelAndView5(){
User user = new User();
user.setId(7L);
user.setName("張九");
Map<String,User> map = new HashMap<>();
map.put("user",user);
ModelAndView modelAndView = new ModelAndView("view",map);
return modelAndView;
}
@RequestMapping("/modelAndView6")
public ModelAndView modelAndView6(){
User user = new User();
user.setId(8L);
user.setName("陳十");
Map<String,User> map = new HashMap<>();
map.put("user",user);
View view = new InternalResourceView("/view.jsp");
ModelAndView modelAndView = new ModelAndView(view,map);
return modelAndView;
}
@RequestMapping("/modelAndView7")
public ModelAndView modelAndView7(){
User user = new User();
user.setId(9L);
user.setName("許十一");
ModelAndView modelAndView = new ModelAndView("view","user",user);
return modelAndView;
}
@RequestMapping("/modelAndView8")
public ModelAndView modelAndView8(){
User user = new User();
user.setId(10L);
user.setName("張十二");
View view = new InternalResourceView("/view.jsp");
ModelAndView modelAndView = new ModelAndView(view,"user",user);
return modelAndView;
}
示例：
view.jsp（添加 <%@ page isELIgnored=“false” %> 以開啓支持EL語句）：
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page isELIgnored="false" %>
<html>
<head>
<title>Title</title>
</head>
<body>
${requestScope.user}
</body>
</html>
訪問url：http://localhost:8080/modelAndView
結果：
