Spring Boot-Datei Upload-Fehler

Question

Hallo, ich versuche, Upload-Datei auf einen Spring-Boot-Server, aber ich habe eine Ausnahme in der Application.java Klasse wie in der folgenden Beschreibung gezeigt.

Application.java:

package com.theligue.webservice; 

import org.springframework.boot.CommandLineRunner; 
import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
import org.springframework.boot.context.properties.EnableConfigurationProperties; 
import org.springframework.context.annotation.Bean; 

import com.theligue.webservice.storage.StorageProperties; 
import com.theligue.webservice.storage.StorageService; 



@SpringBootApplication 
@EnableConfigurationProperties(StorageProperties.class) 
public class Application { 

    public static void main(String[] args) { 
     SpringApplication.run(Application.class, args); 
    } 

    @Bean 
    CommandLineRunner init(StorageService storageService) { 
     return (args) -> { 
      storageService.deleteAll(); 
      storageService.init(); 
     }; 
    } 
} 

FileUploadController.java

package com.theligue.webservice; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.core.io.Resource; 
import org.springframework.http.HttpHeaders; 
import org.springframework.http.ResponseEntity; 
import org.springframework.stereotype.Controller; 
import org.springframework.ui.Model; 
import org.springframework.web.bind.annotation.*; 
import org.springframework.web.multipart.MultipartFile; 
import org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder; 
import org.springframework.web.servlet.mvc.support.RedirectAttributes; 

import com.theligue.webservice.storage.StorageFileNotFoundException; 
import com.theligue.webservice.storage.StorageService; 


import java.io.IOException; 
import java.util.stream.Collectors; 

@Controller 
@RequestMapping("/api") 
public class FileUploadController { 
    private final StorageService storageService; 

    @Autowired 
    public FileUploadController(StorageService storageService) { 
     this.storageService = storageService; 
    } 

    @GetMapping("/") 
    public String listUploadedFiles(Model model) throws IOException { 


     model.addAttribute("files", storageService 
       .loadAll() 
       .map(path -> 
         MvcUriComponentsBuilder 
           .fromMethodName(FileUploadController.class, "serveFile", path.getFileName().toString()) 
           .build().toString()) 
       .collect(Collectors.toList())); 

     return "uploadForm"; 
    } 

    @GetMapping("/files/{filename:.+}") 
    @ResponseBody 
    public ResponseEntity<Resource> serveFile(@PathVariable String filename) { 

     Resource file = storageService.loadAsResource(filename); 
     return ResponseEntity 
       .ok() 
       .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\""+file.getFilename()+"\"") 
       .body(file); 
    } 

    @PostMapping("/") 
    public String handleFileUpload(@RequestParam("file") MultipartFile file, 
            RedirectAttributes redirectAttributes) { 

     storageService.store(file); 
     redirectAttributes.addFlashAttribute("message", 
       "You successfully uploaded " + file.getOriginalFilename() + "!"); 

     return "redirect:/"; 
    } 

    @ExceptionHandler(StorageFileNotFoundException.class) 
    public ResponseEntity handleStorageFileNotFound(StorageFileNotFoundException exc) { 
     return ResponseEntity.notFound().build(); 
    } 


} 

pom.xml-Datei:

<?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.theligue.webservice</groupId> 
    <artifactId>TheLigueWebService</artifactId> 
    <version>0.0.1-SNAPSHOT</version> 
    <packaging>war</packaging> 

    <name>LigueWebServices</name> 
    <description>web servicde for ligue</description> 
    <parent> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-parent</artifactId> 
     <version>1.4.3.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-data-mongodb</artifactId> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-web</artifactId> 
     </dependency> 

     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-tomcat</artifactId> 
      <scope>provided</scope> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-test</artifactId> 
      <scope>test</scope> 
     </dependency> 
    </dependencies> 

    <build> 
     <plugins> 
      <plugin> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-maven-plugin</artifactId> 
      </plugin> 
     </plugins> 
    </build> 


</project> 

Ausnahme:

. ____   _   __ _ _ 
/\\/___'_ __ _ _(_)_ __ __ _ \ \ \ \ 
(()\___ | '_ | '_| | '_ \/ _` | \ \ \ \ 
\\/ ___)| |_)| | | | | || (_| | )))) 
    ' |____| .__|_| |_|_| |_\__, |//// 
=========|_|==============|___/=/_/_/_/ 
:: Spring Boot ::  (v1.4.3.RELEASE) 

2017-01-19 22:21:38.352 INFO 9688 --- [ restartedMain] com.theligue.webservice.Application  : Starting Application on DESKTOP-M1QNJT9 with PID 9688 (started by Mohammad Taha in C:\Users\Mohammad Taha\workspace\theLigue\LigueWebServices) 
2017-01-19 22:21:38.356 INFO 9688 --- [ restartedMain] com.theligue.webservice.Application  : No active profile set, falling back to default profiles: default 
2017-01-19 22:21:38.673 INFO 9688 --- [ restartedMain] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@4d8e44e: startup date [Thu Jan 19 22:21:38 MSK 2017]; root of context hierarchy 
2017-01-19 22:21:38.869 WARN 9688 --- [ restartedMain] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.theligue.webservice.Application]; nested exception is org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'fileUploadController' for bean class [com.theligue.webservice.FileUploadController] conflicts with existing, non-compatible bean definition of same name and class [com.theligue.webservice.controller.FileUploadController] 
2017-01-19 22:21:38.873 ERROR 9688 --- [ restartedMain] o.s.b.f.s.DefaultListableBeanFactory  : Destroy method on bean with name 'org.springframework.boot.autoconfigure.internalCachingMetadataReaderFactory' threw an exception 

java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@4d8e44e: startup date [Thu Jan 19 22:21:38 MSK 2017]; root of context hierarchy 
    at org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:404) [spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.ApplicationListenerDetector.postProcessBeforeDestruction(ApplicationListenerDetector.java:97) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:253) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:578) [spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:554) [spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:959) [spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:523) [spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:966) [spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1033) [spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:555) [spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at com.theligue.webservice.Application.main(Application.java:19) [classes/:na] 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_101] 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_101] 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_101] 
    at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_101] 
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-1.4.3.RELEASE.jar:1.4.3.RELEASE] 

2017-01-19 22:21:38.880 ERROR 9688 --- [ restartedMain] o.s.boot.SpringApplication    : Application startup failed 

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.theligue.webservice.Application]; nested exception is org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'fileUploadController' for bean class [com.theligue.webservice.FileUploadController] conflicts with existing, non-compatible bean definition of same name and class [com.theligue.webservice.controller.FileUploadController] 
    at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:180) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:308) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:228) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:270) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:93) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:686) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:524) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at com.theligue.webservice.Application.main(Application.java:19) [classes/:na] 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_101] 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_101] 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_101] 
    at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_101] 
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
Caused by: org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'fileUploadController' for bean class [com.theligue.webservice.FileUploadController] conflicts with existing, non-compatible bean definition of same name and class [com.theligue.webservice.controller.FileUploadController] 
    at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.checkCandidate(ClassPathBeanDefinitionScanner.java:320) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:259) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.annotation.ComponentScanAnnotationParser.parse(ComponentScanAnnotationParser.java:137) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:268) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:230) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:197) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:166) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    ... 18 common frames omitted 

exception in class exactly : 
[![enter image description here][1]][1] 

Answer 1

Der Fehler zeigt an, dass Sie ein Problem mit Ihrem FileUploadController haben, die Bean ist in Konflikt, zwei Klassen desselben Namens mit Spring kann nicht bestimmen, welche zu verwenden ist. Versuchen Sie, einen Alias ​​und ein Qualifikationsmerkmal zu erstellen oder geben Sie einen anderen Namen ein kein Konflikt.

Ein Beispiel mit Federverschluß und Datei-Upload überprüfen sie folgendes Beispiel: https://github.com/Rob-Leggett/gradle_springboot_microservice