Spring mvc &引用；HTTP状态404“；还有一个额外的“；“错误的道路”；在请求路径中

这是我的实习春季项目。我无法在SpringMVC拦截器中重定向到正确的页面

spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <description>Spring MVC Configuration</description>


    <context:property-placeholder ignore-unresolvable="true" location="classpath:myshop.properties"/>


    <context:component-scan base-package="com.huahua.my.shop" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>


    <mvc:annotation-driven />


    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="${web.view.prefix}"/>
        <property name="suffix" value="${web.view.suffix}"/>
    </bean>


    <mvc:resources mapping="/**/static/**" location="/static/" cache-period="31536000"/>

    <mvc:interceptors>
        <mvc:interceptor>
            <mvc:mapping path="/**"/>
            <mvc:exclude-mapping path="/login"/>
            <mvc:exclude-mapping path="/static/**"/>
            <mvc:exclude-mapping path="/loginOut"/>
            <bean class="com.huahua.my.shop.web.admin.web.intercepter.LoginIntercepter" />
        </mvc:interceptor>
        <mvc:interceptor>
            <mvc:mapping path="/login"/>
            <bean class="com.huahua.my.shop.web.admin.web.intercepter.PermissionIntercepter" />
        </mvc:interceptor>
    </mvc:interceptors>
</beans>

这是我的拦截器

public class LoginIntercepter implements HandlerInterceptor {

    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o ) throws Exception {

        TbUser tbUser =(TbUser) httpServletRequest.getSession().getAttribute(ConstantUtils.SESSION_USER);  //SESSION_USER = user
        System.out.println(httpServletRequest.getRequestURL());
        if (tbUser == null){
            httpServletResponse.sendRedirect("login");
        }
        return true;
    }

    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {}

    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {}
}

这是

LoginController

@Controller
public class LoginController {
    @Autowired
    private TbUserService tbuserService ;

    @RequestMapping(value = {"","login"},method = RequestMethod.GET)
    public String login(){
        return "login" ;
    }

    @RequestMapping(value = "login",method = RequestMethod.POST)
    public String login(@RequestParam(required = true) String email ,
                        @RequestParam(required = true ) String password ,
                        @RequestParam(required = false) String isRemember,
                        HttpServletRequest request,
                        Model model){
        TbUser user = tbuserService.loginRight(email, password);
        isRemember = isRemember == "on" ? "checked" : null ;
        if (user != null ){
            request.getSession().setAttribute(ConstantUtils.SESSION_USER,user);
            request.getSession().setAttribute("remember",isRemember);
            return "redirect:/main" ;
        }

        else {
            model.addAttribute("message","username or password is wrong");
            return "login" ;
        }

    }

当我登录并请求

http://localhost:8080/user/list

，我成功地输入了

user\u list.jsp

过了一段时间，此会话超时，我刷新此页面， 我希望它被重定向到

http://localhost:8080/login

但是我得到了这个路径

http://localhost:8080/user/login

我怎样才能解决这个问题

为什么路径中有额外的“/user”？ 重定向路径中的

/user

和UserController中的

@RequestMapping（value=“/user”）

之间有什么关系

非常感谢

---

正如API文档对HttpServletResponse#sendRedirect的说明：

使用指定的 重定向位置URL并清除缓冲区。缓冲区将是 用此方法的数据集替换。调用此方法集 SC_的状态代码已找到302（已找到）。这种方法可以接受 相对网址；servlet容器必须将相对URL转换为 将响应发送到客户端之前的绝对URL如果 位置是相对的，没有前导“/”，容器解释它 相对于当前请求URI。如果位置是相对的 使用前导“/”时，容器将其解释为相对于 servlet容器根

因此，由于您指定了相对URL，因此相对于当前请求URL进行解析

/users/list

因此，您需要将其更改为：

httpServletResponse.sendRedirect("/login");

httpServletResponse.sendRedirect("/login");