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[英]Spring configuration: No mapping found for HTTP request with URI in DispatcherServlet with name 'dispatcherServlet'
[英]Spring Boot, Java Config - No mapping found for HTTP request with URI [/…] in DispatcherServlet with name 'dispatcherServlet'
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。
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。
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。
问题是:它无法呈现我们的管理员登录页面。
这是代码:
主配置类:
@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
是@SpringBootApplication
带来的,它会扫描是在其他配置mainpackage.config
,所以进口的视图配置类:
@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");
}
}
在tiles-definitions.xml
我对login-template-tiles有以下定义:
<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,两个文件都存在。
鉴于我尝试访问/ adm / login时调用 LoginController.login()的所有内容。 但它无法找到合适的jsp文件,显然。
它返回404 。 启用TRACE后,我得到以下日志:
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。
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?
好! 发现了问题。
这个链接帮助了我: https : //samerabdelkafi.wordpress.com/2014/08/03/spring-mvc-full-java-based-config/
更具体地说这个配置:
@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,而是将JSP代码改为html,这清楚地告诉我JSP正在被找到但未被渲染。
所以答案就在这个页面上: JSP文件无法在Spring Boot Web应用程序中呈现
我错过了tomcat-embed-jasper工件。
将以下依赖项添加到您的pom.xml
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
当我遇到类似的问题时,这里的提示帮助了我。 我在配置上添加此片段后修复了它
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
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