无法解析名称为“dispatcherServlet”的 servlet 中名称为“forward:/index.html”的视图

【问题标题】：Could not resolve view with name 'forward:/index.html' in servlet with name 'dispatcherServlet'无法解析名称为“dispatcherServlet”的 servlet 中名称为“forward:/index.html”的视图
【发布时间】：2017-10-19 20:12:54
【问题描述】：

我正在尝试实现使用Spring Boot 和React 的应用程序。

我的project 结构如下所示

hero-journey-web\
    src\main\java\...\
                      WebMvcConfig.java
                      HeroJourneyWebApplication.java
            \resources\public\index.html
                       application.properties

我的HeroJourneyWebApplication 班级看起来像这样

@EnableWebMvc
@SpringBootApplication
public class HeroJourneyWebApplication {

    public static void main(String[] args) {
        SpringApplication.run(HeroJourneyWebApplication.class, args);
    }
}

我的WebMvcConfig 班级看起来像这样

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/ui/**").addResourceLocations("classpath:/META-INF/resources/ui/");
        registry.addResourceHandler("/**").addResourceLocations("classpath:/public/");
    }

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("forward:/index.html");
    }
}

但是当我尝试访问 localhost:8080/（我为 Spring Security 提供了登录名和密码）时，我收到了这个错误

javax.servlet.ServletException: Could not resolve view with name 'forward:/index.html' in servlet with name 'dispatcherServlet'
        at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1305) ~[spring-webmvc-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1069) ~[spring-webmvc-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1008) ~[spring-webmvc-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) ~[spring-webmvc-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978) ~[spring-webmvc-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:870) ~[spring-webmvc-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:855) ~[spring-webmvc-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:119) ~[spring-boot-actuator-2.0.0.M5.jar!/:2.0.0.M5]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:158) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter.doFilter(DefaultLoginPageGeneratingFilter.java:188) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177) ~[spring-security-web-5.0.0.M5.jar!/:5.0.0.M5]
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357) ~[spring-web-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270) ~[spring-web-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.0.RELEASE.jar!/:5.0.0.RELEASE]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~[tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:na]
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:na]
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.23.jar!/:8.5.23]
        at java.base/java.lang.Thread.run(Unknown Source) [na:na]

有什么问题？

【问题讨论】：

  • 您的依赖项是什么，您是否包括一个模板启动器（例如 spring-boot-starter-thymeleaf）？您是否配置了自定义视图解析器前缀和后缀？你试过只使用'forward：/index'吗？只是几个问题:)
  • 我不使用thymeleaf。自定义视图解析器？不，我没有配置它。使用 forward:/index 没有任何改变。不过我提供了一个到 github 的链接。

标签： java servlets spring-boot


【解决方案1】：

您在“WebMVCConfig.java”中注册了两个冲突的路径。

这告诉您的应用每个请求都应该转发到“公共”类路径文件夹。

registry.addResourceHandler("/**").addResourceLocations("classpath:/public/");

但是下一个说您使用路径“/index.html”控制了视图（模板等）。

registry.addViewController("/").setViewName("forward:/index.html");

视图控制器假设您使用的是模板引擎，因为这是使用视图控制器的唯一原因。如果您的所有 html 内容都是静态的，那么只需将其全部保存在公共资源文件夹中，不要为其添加视图控制器。

如果您也有该应用程序提供 RESTful api，请确保所有 api 调用都转到单独的路径，例如“/api/v1”或类似路径。

最后，将“/ui/**”路径资源处理程序注册放在最后，这样“/**”路径就不会覆盖它或只是删除“/**”。

示例：

package com.lapots.breed.hero.journey.web;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class WebMvcConfig implements WebMvcConfigurer{

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry){

        registry.addResourceHandler("/ui/**").addResourceLocations("classpath:/META-INF/resources/ui/");
    }
}

结构：

/hero-journey-web
    /src/main
            /java
                  <!-- lemony snippet -->
            /resources
                /public/index.html
                /application.properties

查看这个从同一个应用程序提供静态内容和一个 restful api 的示例。

https://github.com/Pytry/bootiful-war-deployment/tree/master/hello-static

【讨论】：

  • 我不完全理解您的回复。你说，如果你所有的内容都是静态的，不要添加任何 viewController，但是你如何在静态内容中重定向，从 /docs/ 到 /docs/index.html？您所说的似乎与此不兼容：stackoverflow.com/a/29969014/1043677
  • @lqbweb 好问题。 Spring Boot 自动为“public”和“static”文件夹中的内容创建资源处理程序，包括在请求“/”时提供“/index.html”。这只发生在根 url 上，所以“/docs”不会提供“/docs/index.html”，如果你改变它，你只会创造不必要的工作和头痛。只需确保您的根/索引使用完全限定的资源和文件名即可。当然，如果“/docs”是应用程序的根目录，因为你是作为war文件部署到tomcat，那么当请求“/docs”时，它将服务“/docs/index.html”。
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