我最近开始使用Linux Fedora 26，想要启动一个Spring Boot应用程序，但它无法识别Thymeleaf的@Controller和@RestController注释。我的HomeController类的映射看不到我的Templates文件夹，并且出现了Whiteable Error页面/ 404。 我已经开始在旧的Windows机器上构建类似的项目（https://github.com/alexanderphoen1x/trainingdiary），并且看起来工作正常，但是当我尝试运行旧的项目时，我从github克隆了它，这给了我一个例外：
Error creating bean with name 'requestMappingHandlerMapping' defined in class path resource
[org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed
我认为这可能与Linux有关？
项目结构：
1. greenenergy
-src/main/java
+com.greenenergy
*GreenEnergyApplication.java
+com.greenenergy.controller
*HomeController.java
-src/main/resources
+static
+templates
*stories.html
+application.properties
(...)
-pom.xml
我的代码： GreenEnergyApplication.java：
package com.greenenergy;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class GreenEnergyApplication {
public static void main(String[] args) {
SpringApplication.run(GreenEnergyApplication.class, args);
}
}
HomeController.java：
package com.greenergy.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class HomeController {
@RequestMapping("/")
public String stories() {
return "stories";
}
}
stories.html：
<!DOCTYPE html>
<html>
<title></title>
<head></head>
<body>Hey Alex</body>
</html>
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.greenenergy</groupId>
<artifactId>greenenergy</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo</name>
<description>Green energy project</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.6.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-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.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
控制台：
2018-10-22 17:31:32.580 INFO 5091 --- [ restartedMain] com.greenenergy.GreenEnergyApplication : Starting GreenEnergyApplication on localhost.localdomain with PID 5091 (/home/alexanderp/Projects/greenenergy/greenenergy/target/classes started by alexanderp in /home/alexanderp/Projects/greenenergy/greenenergy)
2018-10-22 17:31:32.581 INFO 5091 --- [ restartedMain] com.greenenergy.GreenEnergyApplication : No active profile set, falling back to default profiles: default
2018-10-22 17:31:32.650 INFO 5091 --- [ restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@76dffce0: startup date [Mon Oct 22 17:31:32 CEST 2018]; root of context hierarchy
2018-10-22 17:31:34.411 INFO 5091 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2018-10-22 17:31:34.438 INFO 5091 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2018-10-22 17:31:34.439 INFO 5091 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.34
2018-10-22 17:31:34.446 INFO 5091 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : Loaded APR based Apache Tomcat Native library [1.2.16] using APR version [1.6.3].
2018-10-22 17:31:34.447 INFO 5091 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
2018-10-22 17:31:34.447 INFO 5091 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]
2018-10-22 17:31:34.450 INFO 5091 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : OpenSSL successfully initialized [OpenSSL 1.1.0h-fips 27 Mar 2018]
2018-10-22 17:31:34.546 INFO 5091 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-10-22 17:31:34.546 INFO 5091 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1900 ms
2018-10-22 17:31:34.619 INFO 5091 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Servlet dispatcherServlet mapped to [/]
2018-10-22 17:31:34.623 INFO 5091 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-10-22 17:31:34.624 INFO 5091 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-10-22 17:31:34.624 INFO 5091 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-10-22 17:31:34.624 INFO 5091 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2018-10-22 17:31:34.785 INFO 5091 --- [ restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-10-22 17:31:35.027 INFO 5091 --- [ restartedMain] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@76dffce0: startup date [Mon Oct 22 17:31:32 CEST 2018]; root of context hierarchy
2018-10-22 17:31:35.117 INFO 5091 --- [ restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-10-22 17:31:35.119 INFO 5091 --- [ restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-10-22 17:31:35.177 INFO 5091 --- [ restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-10-22 17:31:35.177 INFO 5091 --- [ restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-10-22 17:31:35.425 INFO 5091 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2018-10-22 17:31:35.453 INFO 5091 --- [ restartedMain] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2018-10-22 17:31:35.482 INFO 5091 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2018-10-22 17:31:35.487 INFO 5091 --- [ restartedMain] com.greenenergy.GreenEnergyApplication : Started GreenEnergyApplication in 3.246 seconds (JVM running for 4.164)
2018-10-22 17:31:40.437 INFO 5091 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2018-10-22 17:31:40.437 INFO 5091 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2018-10-22 17:31:40.450 INFO 5091 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 12 ms
2018-10-22 17:31:48.845 INFO 5091 --- [ Thread-7] ConfigServletWebServerApplicationContext : Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@76dffce0: startup date [Mon Oct 22 17:31:32 CEST 2018]; root of context hierarchy
2018-10-22 17:31:48.848 INFO 5091 --- [ Thread-7] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans on shutdown
答案 0 :(得分：0)
在下载过程中，Maven依赖项可能已损坏。注释掉POM中的Thymeleaf并保存项目。手动删除驱动器上的Thymeleaf文件。将Thymeleaf依赖项放回POM中并保存项目。