Java 区分是否为'；是重定向：还是HandlerInterceptorAdaptor中的正常请求

如何区分HandlerInterceptorAdaptor.preHandle（）中的重定向：与否？我需要为每个新请求清除一个会话属性，除了它是一个重定向：来自控制器类

e、 g

拦截器类

public class RequestInterceptor extends HandlerInterceptorAdapter {
    @Override
    public boolean preHandle(HttpServletRequest req, HttpServletResponse resp, Object handler) throws Exception {
        //CHECK whether it's a redirect:, if NO then clear session attribute.
        HttpSession session = req.getSession(false);
        session.removeAttribute("attributeKey");
    }
}

@RequestMapping(value = "/detail", method = RequestMethod.GET)
private String viewDetails(HttpSession session, ...) {
    //program logic here
}

@RequestMapping(value = "/updatedetail", method = RequestMethod.GET)
private String updateDetails(HttpSession session, ...) {
    //program logic here
    //set session attribute
    session.setAttribute("attributeKey", someobject);

    //redirect, but i want the session attribute to be visible to the page instead of cleared by interceptor
    return "redirect:detail";
}

控制器类

public class RequestInterceptor extends HandlerInterceptorAdapter {
    @Override
    public boolean preHandle(HttpServletRequest req, HttpServletResponse resp, Object handler) throws Exception {
        //CHECK whether it's a redirect:, if NO then clear session attribute.
        HttpSession session = req.getSession(false);
        session.removeAttribute("attributeKey");
    }
}

@RequestMapping(value = "/detail", method = RequestMethod.GET)
private String viewDetails(HttpSession session, ...) {
    //program logic here
}

@RequestMapping(value = "/updatedetail", method = RequestMethod.GET)
private String updateDetails(HttpSession session, ...) {
    //program logic here
    //set session attribute
    session.setAttribute("attributeKey", someobject);

    //redirect, but i want the session attribute to be visible to the page instead of cleared by interceptor
    return "redirect:detail";
}

要隐藏属性键，请执行以下操作：

<bean id="myBean" class="org.springframework.web.servlet.view.RedirectView">
    <property name="exposeModelAttributes" value="false"/>
    <property name="url" value="/detail"/>
</bean>

要隐藏属性键，请执行以下操作：

<bean id="myBean" class="org.springframework.web.servlet.view.RedirectView">
    <property name="exposeModelAttributes" value="false"/>
    <property name="url" value="/detail"/>
</bean>

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您可以将此行更改为您的代码。

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HttpSession session=req.getSession（true）

您可以将这一行更改为您的代码。

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HttpSession session=req.getSession（true）

谢谢。。这是否意味着对于每个url，我都需要一个映射？我有点脱离了Spring。例如，应该有一个注释。谢谢。。这是否意味着对于每个url，我都需要一个映射？我有点脱离了Spring。例如，应该有一个注释。