java 登录后Spring MVC控制器重定向到某个URL
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Spring MVC controller redirect to some URL after login
提问by Sotirios Delimanolis
I have a Spring MVC Controller with handlers like so:
我有一个带有如下处理程序的 Spring MVC 控制器：
@RequestMapping(value = "/account/login", method = RequestMethod.GET)
public String login() {
return "login";
}
@RequestMapping(value = "/account/login", method = RequestMethod.POST, params = "login")
public String login(@RequestParam(value = "username") String username,
@RequestParam(value = "password") String password) {
// do authentication
return "home";
}
The form in the login.html page POSTs to account/login (the same url). I'd like that after the authentication, I redirect the user to the home page of my application, so that he sees www.mywebappexample.comin address bar instead of www.mywebappexample.com/account/login. When I return the string from the login method, it renders the proper html but I don't have the URL I want to show. How can I redirect?
login.html 页面中的表单发布到 account/login（相同的 url）。我希望在身份验证后，我将用户重定向到我的应用程序的主页，以便他www.mywebappexample.com在地址栏中看到而不是www.mywebappexample.com/account/login. 当我从登录方法返回字符串时，它会呈现正确的 html，但我没有想要显示的 URL。如何重定向？
Edit:I had to prefix my controller return String with redirect:. This works if you have a view resolver that subclasses UrlBasedViewResolver UrlBasedViewResolver. Thymeleaf's view resolver doesn't do that but it does have the behavior -> ThymeleafViewResolver. Here's my servlet-context.xml (I'm using thymeleaf):
编辑：我必须在我的控制器返回字符串前加上redirect:. 如果您有一个子类化 UrlBasedViewResolver UrlBasedViewResolver的视图解析器，则此方法有效。Thymeleaf 的视图解析器不会这样做，但它确实具有行为 -> ThymeleafViewResolver。这是我的 servlet-context.xml（我使用的是百里香叶）：
<bean id="templateResolver"
class="org.thymeleaf.templateresolver.ServletContextTemplateResolver">
<property name="prefix" value="/WEB-INF/"/>
<property name="suffix" value=".html"/>
<property name="templateMode" value="HTML5"/>
</bean>
<bean id="templateEngine" class="org.thymeleaf.spring3.SpringTemplateEngine">
<property name="templateResolver" ref="templateResolver"/>
</bean>
<bean id="viewResolver" class="org.thymeleaf.spring3.view.ThymeleafViewResolver">
<property name="templateEngine" ref="templateEngine"/>
<property name="order" value="1"/>
</bean>
回答by Reimeus
You can use a redirect in the tag instead which should update the URL in the browser window:
您可以在标签中使用重定向来代替它应该更新浏览器窗口中的 URL：
return "redirect:home";
回答by Scoota P
Check if the authentication passed successfully and then forward the request with the request dispatcher
检查身份验证是否成功，然后将请求转发给请求调度器
RequestDispatcher rd = servletContext.getRequestDispatcher("/pathToResource");
rd.forward(request, response);
