spring - spring3 Controller 中的重定向

Question

在 Spring 3 中，您可以像这样简单地映射 url:

@RequestMapping(value = "/index.html", method = RequestMethod.GET)
public String index(Model model)  {
    return "index";
}

是否可以使这种方法重定向到另一个网址，例如:

@RequestMapping(value = "/index.html", method = RequestMethod.GET)
public String index(Model model)  {
    return "second.html";
}

@RequestMapping(value = "/second.html", method = RequestMethod.GET)
public String second(Model model)  {
//put some staff in model
    return "second";
}

Answer 1

您不需要重定向 - 只需调用该方法即可:

@RequestMapping(value = "/index.html", method = RequestMethod.GET)
public String index(Model model)  {
    return second(model);
}

@RequestMapping(value = "/second.html", method = RequestMethod.GET)
public String second(Model model)  {
    //put some staff in model
    return "second";
}

这是注释风格的好处之一；您可以将您的方法链接在一起。

如果您确实想要重定向，那么您可以将其作为 View 返回:

@RequestMapping(value = "/index.html", method = RequestMethod.GET)
public View index(Model model)  {
    return new RedirectView("second.html");
}

@RequestMapping(value = "/second.html", method = RequestMethod.GET)
public String second(Model model)  {
    //put some staff in model
    return "second";
}