Java 如何在spring-mvc中传递参数以重定向页面
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How to pass parameters to redirect page in spring-mvc
提问by gstackoverflow
I have wrote following controller:
我写了以下控制器：
@RequestMapping(value="/logOut", method = RequestMethod.GET )
public String logOut(Model model, RedirectAttributes redirectAttributes) {
redirectAttributes.addFlashAttribute("message", "success logout");
System.out.println("/logOut");
return "redirect:home.jsp";
}
How to change this code that on page home.jspI can to write ${message}and to see "success logout"
如何更改页面上home.jsp我可以编写${message}和查看的代码"success logout"
采纳答案by Debojit Saikia
When the return value contains redirect:prefix, the viewResolverrecognizes this as a special indication that a redirect is needed. The rest of the view name will be treated as the redirect URL. And the client will send a new request to this redirect URL. So you need to have a handler method mapped to this URL to process the redirect request.
当返回值包含redirect:前缀时，它viewResolver会将其识别为需要重定向的特殊指示。视图名称的其余部分将被视为重定向 URL。客户端将向 this 发送一个新请求redirect URL。所以你需要有一个处理程序方法映射到这个 URL 来处理重定向请求。
You can write a handler method like this to handle the redirect request:
您可以编写这样的处理程序方法来处理重定向请求：
@RequestMapping(value="/home", method = RequestMethod.GET )
public String showHomePage() {
return "home";
}
And you can re-write the logOuthandler method as this:
您可以将logOut处理程序方法重写为：
@RequestMapping(value="/logOut", method = RequestMethod.POST )
public String logOut(Model model, RedirectAttributes redirectAttributes) {
redirectAttributes.addFlashAttribute("message", "success logout");
System.out.println("/logOut");
return "redirect:/home";
}
EDIT:
编辑：
You can avoid showHomePagemethod with this entry in your application config file:
您可以showHomePage在应用程序配置文件中避免使用此条目的方法：
<beans xmlns:mvc="http://www.springframework.org/schema/mvc"
.....
xsi:schemaLocation="...
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
....>
<mvc:view-controller path="/home" view-name="home" />
....
</beans>
This will forward a request for /hometo a view called home. This approach is suitable if there is no Java controller logic to execute before the view generates the response.
这会将请求转发/home到名为 的视图home。如果在视图生成响应之前没有要执行的 Java 控制器逻辑，则此方法适用。
