如何使用spring4 @RestController返回一个jsp页面? [英] how to use spring4 @RestController to return a jsp page?

问题描述

当我像这样使用spring3 @Controller时:

When I use spring3 @Controller like this:

@RequestMapping("/userCenter")

@Controller
public class LoginCtrl {
    @RequestMapping("/loginPage")
    public String login(HttpServletRequest request,HttpServletResponse response,Model model) throws Exception { 
        return "userCenter/loginPage";
    }
}

没关系，我在浏览器中获得了loginPage.jsp正确的内容.

It is ok, I get the the loginPage.jsp right content in browser.

但是当我将@Controller更改为@RestController

but when I change @Controller to @RestController

localhost:8080//userCenter/loginPage返回带有字符串"userCenter/loginPage"的页面

the localhost:8080//userCenter/loginPage return a page with the string "userCenter/loginPage"

那么，如何使用@RestController来获取像@Controller这样的jsp页面?

So,how could I use @RestController to get jsp pages like @Controller?

推荐答案

不应该. @RestController并不意味着要通过String返回类型/值返回视图名称.这意味着返回将直接写入响应主体的内容.

You shouldn't. A @RestController is not meant to return view names through a String return type/value. It's meant to return something that will be written to the response body directly.

更具体地说(在一般配置情况下)，Spring MVC在RequestMappingHandlerAdapter#getDefaultReturnValueHandlers()中配置其返回值处理程序.如果您查看该实现，则String视图名称ViewNameMethodReturnValueHandler的处理程序将在之后注册到@RestController(实际上是@ResponseBody)RequestResponseBodyMethodProcessor的处理程序中.

More concretely (in the general configuration case), Spring MVC configures its return value handlers in RequestMappingHandlerAdapter#getDefaultReturnValueHandlers(). If you look at that implementation, the handler for String view names, ViewNameMethodReturnValueHandler, is registered after the handler for @RestController (really @ResponseBody), RequestResponseBodyMethodProcessor.

如果确实需要，可以声明您的方法具有View或ModelAndView的返回类型(这些处理程序ViewMethodReturnValueHandler和ModelAndViewMethodReturnValueHandler的注册在RequestResponseBodyMethodProcessor之前)并返回适当的对象，并带有可识别的视图名称.

If you really have to, you can declare your method to have a return type of View or ModelAndView (the handlers for these, ViewMethodReturnValueHandler and ModelAndViewMethodReturnValueHandler, are registered before RequestResponseBodyMethodProcessor) and return the appropriate object, with an identifying view name.

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