Spring Boot，Java Config - 在DispatcherServlet中找不到带有URI [/ ...]的HTTP请求的映射，名称为“dispatcherServlet” [英] Spring Boot, Java Config - No mapping found for HTTP request with URI [/...] in DispatcherServlet with name 'dispatcherServlet'
问题描述
这在stackOverflow中是一个非常常见的问题，但同一问题的主题都没有解决我的问题。
This has been a quite common problem here in stackOverflow, but none of the topics of the same problem solves mine.
我们有一个使用xml配置的模板配置，但现在我们正试图摆脱它并开始使用Java配置。
We have a template configuration that uses xml config, but now we're trying to move away from that and start using Java config.
所以我有一个使用Java配置和Spring Boot的新项目。我们也使用JSP和Tiles 3.
So I have a new project using Java config and Spring Boot. We're also using JSP and Tiles 3.
问题是：它无法呈现我们的管理员登录页面。
Problem is: it fails to render our admin login page.
以下是代码：
主要配置类：
@SpringBootApplication
@EnableScheduling
@Import(OnAdminBeans.class)
public class AppConfig extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(AppConfig.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(AppConfig.class);
}
}
AppConfig.class 是主包。通过 @ComponentScan @SpringBootApplication 带来，它会扫描 mainpackage上的其他配置.config ，所以它导入了视图配置类：
The AppConfig.class is is the main package. Through the @ComponentScan that @SpringBootApplication brings, it scans the other configurations that are on mainpackage.config, so it imports the view config class:
@Configuration
@EnableWebMvc
public class ViewConfig extends WebMvcConfigurerAdapter {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/adm/static/**").addResourceLocations("/adm/static/");
}
// @Override
// public void addViewControllers(ViewControllerRegistry registry) {
// registry.addViewController("/adm/login").setViewName("login-template-tiles");
// }
@Override
public void configureViewResolvers(ViewResolverRegistry registry) {
registry.viewResolver(viewResolver());
registry.viewResolver(jspViewResolver());
registry.viewResolver(tilesViewResolver());
}
@Bean
public LocaleResolver localeResolver() {
CookieLocaleResolver localeResolver = new CookieLocaleResolver();
localeResolver.setCookieName("locale");
localeResolver.setCookieMaxAge(30);
localeResolver.setDefaultLocale(new Locale("pt", "BR"));
return localeResolver;
}
@Bean
public MultipleViewResolver viewResolver() {
Map<String, ViewResolver> viewsResolvers = new HashMap<String, ViewResolver>();
viewsResolvers.put(MultipleViewResolver.ViewType.JSP.getKey(), jspViewResolver());
viewsResolvers.put(MultipleViewResolver.ViewType.TILES.getKey(), tilesViewResolver());
MultipleViewResolver viewResolver = new MultipleViewResolver();
viewResolver.setViewsResolvers(viewsResolvers);
viewResolver.setOrder(1);
return viewResolver;
}
@Bean
public InternalResourceViewResolver jspViewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setPrefix("/WEB-INF/jsp/");
viewResolver.setSuffix(".jsp");
viewResolver.setViewClass(JstlView.class);
viewResolver.setOrder(2);
return viewResolver;
}
@Bean
public UrlBasedViewResolver tilesViewResolver() {
UrlBasedViewResolver viewResolver = new UrlBasedViewResolver();
viewResolver.setViewClass(TilesView.class);
viewResolver.setOrder(3);
return viewResolver;
}
@Bean
public TilesConfigurer tilesConfigurer() {
TilesConfigurer configurer = new TilesConfigurer();
configurer.setDefinitions("/WEB-INF/tile-defs/tiles-definitions.xml");
return configurer;
}
}
LoginController.class 定义为：
@Controller
@RequestMapping(value = "/adm")
public class LoginController {
@RequestMapping(value = "/login")
public ModelAndView login() {
return new ModelAndView("login-template-tiles");
}
}
以及 tiles-definitions .xml 我对login-template-tiles有以下定义：
And in tiles-definitions.xml I have the following definition for login-template-tiles:
<definition name="login-template-tiles" template="/WEB-INF/jsp/adm/templates/login-template.jsp">
<put-attribute name="admin-title" value="Admin" />
<put-attribute name="content" value="/WEB-INF/jsp/adm/templates/sections/login/index.jsp" />
</definition>
请注意，这两个文件都存在。
Note that both files exist.
鉴于我尝试访问 / adm / login 时，所有 LoginController.login（） 被调用。但它无法找到合适的jsp文件，显然。
Given all that the LoginController.login() does get called when i try to access /adm/login. But it fails to find the proper jsp file, aparently.
它返回 404 。启用TRACE后，我得到以下日志：
It returns a 404. With TRACE enabled, I get the following log:
DispatcherServlet with name 'dispatcherServlet' processing GET request for [/WEB-INF/jsp/adm/templates/login-template.jsp]
Testing handler map [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping@2118c09a] in DispatcherServlet with name 'dispatcherServlet'
Looking up handler method for path /WEB-INF/jsp/adm/templates/login-template.jsp
Did not find handler method for [/WEB-INF/jsp/adm/templates/login-template.jsp]
Testing handler map [org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping@2c148974] in DispatcherServlet with name 'dispatcherServlet'
No handler mapping found for [/WEB-INF/jsp/adm/templates/login-template.jsp]
Testing handler map [org.springframework.web.servlet.handler.SimpleUrlHandlerMapping@784c3547] in DispatcherServlet with name 'dispatcherServlet'
No handler mapping found for [/WEB-INF/jsp/adm/templates/login-template.jsp]
Testing handler map [org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport$EmptyHandlerMapping@533e0604] in DispatcherServlet with name 'dispatcherServlet'
Testing handler map [org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport$EmptyHandlerMapping@cfd1b4e] in DispatcherServlet with name 'dispatcherServlet'
No mapping found for HTTP request with URI [/WEB-INF/jsp/adm/templates/login-template.jsp] in DispatcherServlet with name 'dispatcherServlet'
任何建议都表示赞赏！
编辑：
好的。通过调试，我发现它与嵌入式Tomcat有关。除此之外，我不知道发生了什么。
Ok. By debugging, I found out that it has something to do with the embedded Tomcat. Other than that, I have no clue what is going on.
编辑2：
发现问题出在 org.springframework.web.servlet.DispatcherServlet #getHandler 中。它根本找不到该请求的HandlerMapping。我必须注册吗？
Found that the problem is in org.springframework.web.servlet.DispatcherServlet#getHandler. It simply doesn't find a HandlerMapping for that request. Do I have to register one?
推荐答案
好的！发现问题。
此链接帮助了我： https://samerabdelkafi.wordpress.com/2014/08/03/spring-mvc-full-java-based-config/
更具体地来说，这个配置：
More specifically this configuration:
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
通过设置默认处理程序，我将不再获得白页，而是JSP代码为html，它清楚地告诉我JSP正在被找到但没有被渲染。
By setting a default handler, I would no longer get a white page but instead the JSP code as html, which clearly tells me that the JSP was being found but not rendered.
所以答案就在这个页面上：在Spring Boot Web应用程序中无法呈现JSP文件
So the answer was on this page: JSP file not rendering in Spring Boot web application
我错过了 tomcat-embed-jasper 工件。
这篇关于Spring Boot，Java Config - 在DispatcherServlet中找不到带有URI [/ ...]的HTTP请求的映射，名称为“dispatcherServlet”的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
