java - SpringBoot 找不到视图
问题描述
我正在尝试编写一个简单的 SpringBoot Web 应用程序来开始使用该框架。
这是我的结构:
src
`-main
`-java
`-resources
`-static
`-templates
`-webapp
`-WEB-INF
`-jsp
`-login.jsp
我有一个控制器
@Controller
public class LoginController {
@RequestMapping("/login")
public String loginMessage(){
return "login";
}
}
我已经配置了必须在其中查找视图的路径,application.properties
如下所示:
spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp
logging.level.org.springframework.web=DEBUG
我还在 pom.xml 中包含了下一个依赖项:
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
但是当我访问http://localhost:8080/login时,我仍然遇到 404 错误。我错过了什么?
编辑:这是来自 IntelliJ Idea 控制台的日志。它似乎找到了 login.jsp,但由于某种原因返回了错误页面。
2018-07-06 11:17:20.488 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/login]
2018-07-06 11:17:20.488 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /login
2018-07-06 11:17:20.488 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.lang.String com.albertocastano.apringboot.web.springbootfirstwebapplication.controller.LoginController.loginMessage()]
2018-07-06 11:17:20.488 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Last-Modified value for [/login] is: -1
2018-07-06 11:17:20.489 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, application/xhtml+xml, image/webp, image/apng, application/xml;q=0.9, */*;q=0.8] based on Accept header types and producible media types [*/*])
2018-07-06 11:17:20.489 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.servlet.view.BeanNameViewResolver : No matching bean found for view name 'login'
2018-07-06 11:17:20.489 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Returning [org.springframework.web.servlet.view.InternalResourceView: name 'login'; URL [/WEB-INF/jsp/login.jsp]] based on requested media type 'text/html'
2018-07-06 11:17:20.489 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Rendering view [org.springframework.web.servlet.view.InternalResourceView: name 'login'; URL [/WEB-INF/jsp/login.jsp]] in DispatcherServlet with name 'dispatcherServlet'
2018-07-06 11:17:20.492 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.servlet.view.InternalResourceView : Forwarding to resource [/WEB-INF/jsp/login.jsp] in InternalResourceView 'login'
2018-07-06 11:17:20.492 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/WEB-INF/jsp/login.jsp]
2018-07-06 11:17:20.492 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /WEB-INF/jsp/login.jsp
2018-07-06 11:17:20.493 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Did not find handler method for [/WEB-INF/jsp/login.jsp]
2018-07-06 11:17:20.495 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping : Matching patterns for request [/WEB-INF/jsp/login.jsp] are [/**]
2018-07-06 11:17:20.496 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping : URI Template variables for request [/WEB-INF/jsp/login.jsp] are {}
2018-07-06 11:17:20.497 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapping [/WEB-INF/jsp/login.jsp] to HandlerExecutionChain with handler [ResourceHttpRequestHandler [locations=[class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/], ServletContext resource [/]], resolvers=[org.springframework.web.servlet.resource.PathResourceResolver@3f0408]]] and 1 interceptor
2018-07-06 11:17:20.498 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Last-Modified value for [/WEB-INF/jsp/login.jsp] is: -1
2018-07-06 11:17:20.499 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2018-07-06 11:17:20.499 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Successfully completed request
2018-07-06 11:17:20.500 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Successfully completed request
2018-07-06 11:17:20.501 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/error]
2018-07-06 11:17:20.502 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /error
2018-07-06 11:17:20.502 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)]
2018-07-06 11:17:20.502 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Last-Modified value for [/error] is: -1
2018-07-06 11:17:20.522 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, text/html;q=0.8] based on Accept header types and producible media types [text/html])
2018-07-06 11:17:20.522 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Returning [org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$SpelView@bd7588] based on requested media type 'text/html'
2018-07-06 11:17:20.522 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Rendering view [org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$SpelView@bd7588] in DispatcherServlet with name 'dispatcherServlet'
2018-07-06 11:17:20.522 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Successfully completed request
解决方案
您的pom.xml
文件中缺少依赖项。
添加 jstl :
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
并删除 的范围provided
,tomcat-embed-jasper
因为默认情况下任何 spring-boot-starter 都不提供它。
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