让错误的DispatcherServlet (spring，tiles2，胸腺嘧啶)处理请求

Question

我决定将我的授权功能转移到另一个控制器，但是这给我带来了一些问题。主要是，我的回调控制器无法将GET请求转发到适当的dispatcher servlet。

DispatcherServlet with name 'Auth' processing GET request for [/user/username] (应该是“仪表板”dispatcher servlet)

我的视图层正在使用spring、tiles 2和thymeleaf集成。我发现这个关于堆叠溢出的评论，对我的处境有一些启示。https://stackoverflow.com/a/13406096/2276284

"Secondly, when using Spring + Tiles, and returning some JSP in your tiles definition, it is treated as an internal forward request, and handled by the same servlet as the original request."

我也发现这个堆叠溢出的评论，但它对我不起作用。https://stackoverflow.com/a/17232532/2276284建议返回一个新的ModelAndView，或者使用HttpServletResponse重定向。

如何成功地重定向到另一个控制器/视图？

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
         xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
                             http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" 
                             id="pue" version="3.1">
    <!-- webapp properties -->
    <display-name>PUE</display-name>
    <description>Personal User Engagement for Instagram</description>

    <!-- session listener -->
    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>

    <!-- root context -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/app-context.xml</param-value>
    </context-param>

    <!-- spring security filter -->
    <filter>
        <filter-name>springSecurityFilterChain</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>springSecurityFilterChain</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- custom redirect filter -->
    <filter>
        <filter-name>pueUsernameAuthFilter</filter-name>
        <filter-class>abnd.pue.auth.service.impl.PUEUsernameAuthFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>pueUsernameAuthFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- servlet config -->
    <servlet>
        <servlet-name>Auth</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/servlets/auth-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet>
        <servlet-name>IgOauth</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/servlets/igoauth-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet>
        <servlet-name>Dashboard</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/servlets/dashboard-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <!-- servlet mapping config -->

    <servlet-mapping>
        <servlet-name>Auth</servlet-name>
        <url-pattern>/logout</url-pattern>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>IgOauth</servlet-name>
        <url-pattern>/ig/oauth/callback</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>Dashboard</servlet-name>
        <url-pattern>/user/{username}</url-pattern>
        <url-pattern>/user/{username}/profile</url-pattern>
        <url-pattern>/user/{username}/assets</url-pattern>
    </servlet-mapping>

    <!-- mime types -->
    <mime-mapping>
        <extension>ico</extension>
        <mime-type>image/x-icon</mime-type>
    </mime-mapping>
</web-app>

spring-thymeleaf-tiles.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"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans.xsd">

    <!-- thymeleaf view resolvers with tiles integration -->
    <bean id="tilesConfigurer" class="org.thymeleaf.extras.tiles2.spring4.web.configurer.ThymeleafTilesConfigurer">
        <property name="definitions">
            <list>
                <value>/WEB-INF/tiles/tiles.xml</value>
            </list>
        </property>
    </bean>

    <!-- template resolver -->
    <bean id="templateResolver" class="org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver">
        <property name="prefix" value="/WEB-INF/tiles/" />
        <property name="suffix" value=".html" />
        <property name="templateMode" value="HTML5" />
        <property name="characterEncoding" value="utf-8" />
        <property name="cacheable" value="false" />
    </bean>

    <!-- template engine -->
    <bean id="templateEngine" class="org.thymeleaf.spring4.SpringTemplateEngine">
        <property name="templateResolver" ref="templateResolver" />
        <property name="additionalDialects">
            <set>
                <bean id="tilesDialect" class="org.thymeleaf.extras.tiles2.dialect.TilesDialect" />
            </set>
        </property>
    </bean>

    <!-- tiles view resolver -->
    <bean id="tilesViewResolver" class="org.thymeleaf.spring4.view.ThymeleafViewResolver">
        <property name="viewClass" value="org.thymeleaf.extras.tiles2.spring4.web.view.ThymeleafTilesView" />
        <property name="templateEngine" ref="templateEngine" />
        <property name="characterEncoding" value="utf-8" />
        <property name="order" value="1" />
    </bean>

</beans>

IgOauthController

package abnd.pue.ig.controller;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import abnd.pue.ig.service.intf.IgOauthService;

@Controller
public class IgOauthController {  
    @Autowired
    private IgOauthService igOauthService;

    private static final Logger logger = LoggerFactory.getLogger(IgOauthController.class);

    /**
     * 
     * @param request
     * @return String
     * @throws IOException
     */
    @RequestMapping(value="/ig/oauth/callback")
    public ModelAndView igCallback(HttpServletRequest request, HttpServletResponse response, HttpSession session) throws IOException {
        // get code parameter
        String code = request.getParameter("code");
        // attempt to get user name from callback
        String username = igOauthService.processCallbackRequest(request, session, code);

        // if username isn't empty redirect to user page
        if (!username.isEmpty()) {
            logger.info("username set: " + username);
            return new ModelAndView ("redirect:/user/" + username);
        }

        logger.info("no username set");

        // otherwise return to index TODO error display
        return new ModelAndView("redirect:/");
    }

}

Answer 1

好的，谢谢你们的帮助。因此，问题是我无法将我的视图从默认的DispatcherServlet重定向。我还在web.xml中使用无效的url模式，同时试图创建动态url。

答案是重组我的servlet路径的连接，并将默认servlet从Auth更改为仪表板。我还实现了UrlRewriteFilter，将所有流量从根上下文("/")重定向到"/login“

以下是受影响的更改。

web.xml

<!-- servlet mapping config -->
<servlet-mapping>
    <servlet-name>Auth</servlet-name>
    <url-pattern>/login</url-pattern>
    <url-pattern>/logout</url-pattern>
</servlet-mapping>

<servlet-mapping>
    <servlet-name>IgOauth</servlet-name>
    <url-pattern>/ig/oauth/callback</url-pattern>
</servlet-mapping>

<servlet-mapping>
    <servlet-name>Dashboard</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

IgOauthController

@Controller
@RequestMapping(value = "/ig/oauth")
public class IgOauthController {  
    @Autowired
    private IgOauthService igOauthService;

    private static final Logger logger = LoggerFactory.getLogger(IgOauthController.class);

    /**
     * 
     * @param request
     * @return String
     * @throws IOException
     */
    @RequestMapping(value="/callback")
    public void igCallback(HttpServletRequest request, HttpServletResponse response, HttpSession session) throws IOException {
        // get code parameter
        String code = request.getParameter("code");
        // attempt to get user name from callback
        String username = igOauthService.processCallbackRequest(request, session, code);

        // if username isn't empty redirect to user page
        if (!username.isEmpty()) {
            logger.info("username set: " + username);
            response.sendRedirect("/" + username + "/dashboard");
            return;
        }

        logger.info("no username set");

        // otherwise return to index TODO error display
        response.sendRedirect("/login");
        return;
    }

}

DashboardController

@Controller
@RequestMapping(value = "/{username}")
public class DashboardController {

    @RequestMapping(value = "/dashboard", method=RequestMethod.GET)
    public ModelAndView userDashboard() throws InstagramException {
        ...
    }

    @RequestMapping(value = "/profile", method=RequestMethod.GET) 
    public ModelAndView userProfile() throws InstagramException {
        ...
    }

    @RequestMapping(value = "/assets", method=RequestMethod.GET) 
    public ModelAndView userAssets() throws InstagramException {
        ...
    }
}