Spring 全家桶之 Spring Web MVC（二）- Restful（下）

@RequestMapping("/cookies")
public String getCookies(@CookieValue(value = "JSESSIONID",required = false, defaultValue = "默认值") String jsessionId){
    System.out.println("Cookies中的Key为JSESSIONID的值为:" + jsessionId);
    return "success";
}
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@RequestMapping("/servlet")
public String servletApi(HttpServletRequest request, HttpServletResponse response, HttpSession session){
    request.setAttribute("reqAttr","request中保存的数据");
    session.setAttribute("sessAttr","session中保存到数据");
    return "success";
}
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<h3>请求中保存的数据</h3>
<p>${requestScope.reqAttr}</p>
<h3>session中保存的数据</h3>
<p>${sessionScope.sessAttr}</p>
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<h3>增加Tesla车型</h3>
<form action="/tesla" method="post">
  车型: <input type="text" name="name"> <br>
  价格: <input type="text" name="price"> <br>
  <hr>
  <button type="submit">增加Semi Truck</button>
</form>
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public class Tesla {
    private String name;
    private Double price;
    //此处省略getter/setter/toString信息
}    
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@RequestMapping(value = "/tesla", method = RequestMethod.POST)
public String add(Tesla tesla){
    System.out.println("增加Tesla车型为：" + tesla);
    return "success";
}
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public class Owner {
    private String username;
    private Integer age;
    //省略getter/setter/toString方法
}    
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<h3>增加Tesla车型</h3>
<form action="/tesla" method="post">
  车型: <input type="text" name="name"> <br>
  价格: <input type="text" name="price"> <br>
  车主姓名: <input type="text" name="owner.username"> <br>
  车主年龄: <input type="text" name="owner.age">
  <hr>
  <button type="submit">增加Semi Truck</button>
</form>
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<filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
        <param-name>forceEncoding</param-name>
        <param-value>true</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
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@Controller
public class OutputDataController {
    @RequestMapping("/map")
    public String outputByMap(Map<String, Object> map){
        map.put("mapKey","map中保存的数据");
        return "success";
    }
}
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<h3>Map中保存的数据</h3>
<p>从Request域中获取：${requestScope.msg}</p>
<p>从Session域中获取：${sessionScope.msg}</p>
<p>从PageContext域中获取：${pageScope.msg}</p>
<p>从Application域中获取：${applicationScope.msg}</p>
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@RequestMapping("/model")
public String outputByModel(Model model){
    model.addAttribute("msg", "I am IRONMAN");
    return "success";
}
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@RequestMapping("/model_map")
public String outputByModelMap(ModelMap modelMap){
    modelMap.addAttribute("msg", "I am IRONMAN");
    return "success";
}
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@RequestMapping("model_and_view")
public ModelAndView outputByModelAndView(){
    ModelAndView modelAndView = new ModelAndView("success");
    modelAndView.addObject("msg","I am IRONMAN");
    return modelAndView;
}
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@SessionAttributes(value = "msg")
@Controller
public class SessionController {
    @RequestMapping("/session_attributes")
    public ModelAndView outputBySession(){
        ModelAndView modelAndView = new ModelAndView("success");
        modelAndView.addObject("msg","I am God of Thunder");
        return modelAndView;
    }
    @RequestMapping("/user")
    public ModelAndView getUser(){
        ModelAndView modelAndView = new ModelAndView("success");
        return modelAndView;
    }
}
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@SessionAttributes(types = Tesla.class)
@Controller
public class SessionController {
    @RequestMapping("/session_attributes")
    public ModelAndView outputBySession(){
        ModelAndView modelAndView = new ModelAndView("success");
        modelAndView.addObject("msg","I am God of Thunder");
        return modelAndView;
    }
    @RequestMapping("/user")
    public ModelAndView getUser(){
        ModelAndView modelAndView = new ModelAndView("success");
        return modelAndView;
    }
    @RequestMapping("/session/tesla")
    public ModelAndView getTesla(){
        ModelAndView modelAndView = new ModelAndView("success");
        Tesla tesla = new Tesla();
        tesla.setName("Model 3");
        modelAndView.addObject("msg", tesla);
        return modelAndView;
    }
}
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