【发布时间】：2018-05-08 19:18:29
【问题描述】：
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主类 SpringBootHelloWorldApplication.java
package com.javainuse; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class SpringBootHelloWorldApplication { public static void main(String[] args) { SpringApplication.run(SpringBootHelloWorldApplication.class, args); } } [project layout][1]-
映射TestController.java
package com.javainuse.controllers; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; @Controller public class TestController { @RequestMapping("/welcome") public String firstPage(ModelMap map) { return "welcome"; } } -
welcome.jsp
<!DOCTYPE html> <%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%> <html xmlns:th="http://www.thymeleaf.org"> <head> <title>First Web Application</title> </head> </html>
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4.application.properties
server.port=8086
spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp
5.pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.javainuse</groupId>
<artifactId>SpringBootHelloWorld</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>SpringBootHelloWorld</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.1.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- <dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency> -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>3.3.7</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
6. error in console after hitting http://localhost:8086/welcome
。 ____ _ __ _ _ /\ / ' __ _ ()_ __ __ _ \ \ \ \ ( ( )_ | '_ | '| | ' / ` | \ \ \ \ \/ )| |)| | | | | || (||))))) ' |____| .|| ||| |__, | / / / / =========|_|===============|___/=///_/ :: Spring Boot :: (v1.4.1.RELEASE)
2017-11-24 23:38:08.290 INFO 10028 --- [restartedMain] cjSpringBootHelloWorldApplication：在 NITISH 上启动 SpringBootHelloWorldApplication，PID 为 10028（C:\Users\sumit\workspace1\SpringBootHelloWorld\target\classes 由 sumit 启动C:\Users\smit\workspace1\SpringBootHelloWorld) 2017-11-24 23:38:08.291 INFO 10028 --- [restartedMain] c.j.SpringBootHelloWorldApplication：没有活动配置文件集，回退到默认配置文件：默认 2017-11-24 23:38:08.296 INFO 10028 --- [restartedMain] ationConfigEmbeddedWebApplicationContext：刷新 org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@53707808：启动日期 [Fri Nov 24 23:38:08 IST 2017]；上下文层次的根 2017-11-24 23:38:09.020 INFO 10028 --- [restartedMain] s.b.c.e.t.TomcatEmbeddedServletContainer：Tomcat 使用端口初始化：8086 (http) 2017-11-24 23:38:09.022 INFO 10028 --- [restartedMain] o.apache.catalina.core.StandardService：启动服务 Tomcat 2017-11-24 23:38:09.022 INFO 10028 --- [restartedMain] org.apache.catalina.core.StandardEngine：启动 Servlet 引擎：Apache Tomcat/8.5.5 2017-11-24 23:38:09.033 INFO 10028 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]：初始化 Spring 嵌入式 WebApplicationContext 2017-11-24 23:38:09.034 INFO 10028 --- [ost-startStop-1] os.web.context.ContextLoader：根 WebApplicationContext：初始化在 738 毫秒内完成 2017-11-24 23:38:09.085 信息 10028 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean：映射 servlet：'dispatcherServlet' 到 [/] 2017-11-24 23:38:09.086 INFO 10028 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean：映射过滤器：'characterEncodingFilter' 到：[/] 2017-11-24 23:38:09.086 INFO 10028 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean：映射过滤器：'hiddenHttpMethodFilter' 到：[/] 2017-11-24 23:38:09.086 INFO 10028 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean：映射过滤器：“httpPutFormContentFilter”到：[/] 2017-11-24 23:38:09.087 信息 10028 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean：映射过滤器：'requestContextFilter' 到：[/] 2017-11-24 23:38:09.187 INFO 10028 --- [restartedMain] swsmmaRequestMappingHandlerAdapter：寻找@ControllerAdvice：org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@53707808：启动日期[11 月 24 日星期五 23:38： 08 IST 2017]；上下文层次的根 2017-11-24 23:38:09.203 INFO 10028 --- [restartedMain] swsmmaRequestMappingHandlerMapping：将“{[/welcome]}”映射到公共 java.lang.String com.javainuse.controllers.TestController.firstPage(org.springframework .ui.ModelMap) 2017-11-24 23:38:09.207 INFO 10028 --- [restartedMain] swsmmaRequestMappingHandlerMapping：将“{[/error]}”映射到公共 org.springframework.http.ResponseEntity> org.springframework.boot.autoconfigure.web。 BasicErrorController.error(javax.servlet.http.HttpServletRequest) 2017-11-24 23:38:09.208 INFO 10028 --- [restartedMain] swsmmaRequestMappingHandlerMapping：将“{[/error],produces=[text/html]}”映射到公共 org.springframework.web.servlet.ModelAndView org .springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) 2017-11-24 23:38:09.218 INFO 10028 --- [restartedMain] oswshandler.SimpleUrlHandlerMapping：将 URL 路径 [/webjars/] 映射到 [class org.springframework.web.servlet.resource.资源HttpRequestHandler] 2017-11-24 23:38:09.218 INFO 10028 --- [restartedMain] oswshandler.SimpleUrlHandlerMapping：映射 URL 路径 [/] 到 [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 类型的处理程序] 2017-11-24 23:38:09.236 INFO 10028 --- [restartedMain] oswshandler.SimpleUrlHandlerMapping：将 URL 路径 [/**/favicon.ico] 映射到 [class org.springframework.web.servlet.resource .ResourceHttpRequestHandler] 2017-11-24 23:38:09.307 INFO 10028 --- [restartedMain] o.s.b.d.a.OptionalLiveReloadServer：LiveReload 服务器正在端口 35729 上运行 2017-11-24 23:38:09.363 INFO 10028 --- [restartedMain] o.s.j.e.a.AnnotationMBeanExporter：在启动时为 JMX 暴露注册 bean 2017-11-24 23:38:09.378 INFO 10028 --- [restartedMain] s.b.c.e.t.TomcatEmbeddedServletContainer：Tomcat 在端口：8086 (http) 上启动 2017-11-24 23:38:09.381 INFO 10028 --- [restartedMain] c.j.SpringBootHelloWorldApplication：在 1.146 秒内启动 SpringBootHelloWorldApplication（JVM 运行 63.677） 2017-11-24 23:38:23.373 INFO 10028 --- [nio-8086-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]：初始化 Spring FrameworkServlet 'dispatcherServlet' 2017-11-24 23:38:23.374 INFO 10028 --- [nio-8086-exec-1] os.web.servlet.DispatcherServlet：FrameworkServlet 'dispatcherServlet'：初始化开始 2017-11-24 23:38:23.377 INFO 10028 --- [nio-8086-exec-1] os.web.servlet.DispatcherServlet：FrameworkServlet 'dispatcherServlet'：初始化在 3 毫秒内完成
> **2017-11-24 23:38:23.386 ERROR 10028 --- [nio-8086-exec-1] org.thymeleaf.TemplateEngine : **
>
> > [THYMELEAF][http-nio-8086-exec-1] Exception processing template
> > "welcome": Error resolving template "welcome", template might not
> > exist or might not be accessible by any of the configured Template
> > Resolvers 2017-11-24 23:38:23.388 **ERROR 10028 --- [nio-8086-exec-1]
> > o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for
> > servlet [dispatcherServlet] in context with path [] threw exception
> > [Request processing failed; nested exception is
> > org.thymeleaf.exceptions.TemplateInputException: Error resolving
> > template "welcome", template might not exist or might not be
> > accessible by any of the configured Template Resolvers] with root
> > cause org.thymeleaf.exceptions.TemplateInput**Exception: Error
> > resolving template "welcome", template might not exist or might not be
> > accessible by any of the configured Template Resolvers at
> > org.thymeleaf.TemplateRepository.getTemplate(TemplateRepository.java:246)
> > ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE] at
> > org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1104)
> > ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE] at
> > org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1060)
> > ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE] at
> > org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1011)
> > ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]** at
> > org.thymeleaf.spring4.view.ThymeleafView.renderFragment(ThymeleafView.java:335)
> > ~[thymeleaf-spring4-2.1.5.RELEASE.jar:2.1.5.RELEASE] at
> > org.thymeleaf.spring4.view.ThymeleafView.render(ThymeleafView.java:190)
> > ~[thymeleaf-spring4-2.1.5.RELEASE.jar:2.1.5.RELEASE] at
> > org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1257)
> > ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
>
> ** at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1037)
> ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:980)
> ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
> ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
> ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
> ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
> ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
> ~[tomcat-embed-websocket-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
> ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
> ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:89)
> ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
> ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
> ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
> ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
> ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
> ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE] at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
> ~[tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
> [na:1.8.0_121] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> [na:1.8.0_121] at
> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
> [tomcat-embed-core-8.5.5.jar:8.5.5] at java.lang.Thread.run(Unknown
> Source) [na:1.8.0_121]
[1]: https://i.stack.imgur.com/xvYoS.png
【问题讨论】：
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welcome.jsp这对我来说看起来不像 Thymeleaf 模板。看起来您正在混合 JSP 和 Thymeleaf。 -
能否提供指定视图解析器的 appconfig 类？
-
请给我们一个帮助你的理由，首先要展示一些调试工作。
-
@RomanPuchkovskiy 即使我通过删除
org.springframework.boot spring-boot-starter-thymeleaf 更改了我的 pom.xml /dependency> 我得到这个应用程序没有明确的 /error 映射，因此您将其视为后备。 IST 2017 年 11 月 25 日星期六 01:24:33 出现意外错误（类型=未找到，状态=404）。没有可用的消息。
标签： java maven spring-mvc servlets spring-boot