Springブート - BeanCreationException：名前が 'uploadController'のBeanを作成中にエラーが発生しました

Question

ビデオを.gifに変換するアプリケーションを実行しています。 主な質問は、私が「MaxUploadSizeExceededException」を解決してみてくださいということですので、私はapplicaiton.propertiesファイルの次のプロパティを追加しました：

spring.http.multipart.location=${java.io.tmpdir} 
spring.http.multipart.max-file-size=50MB 
spring.http.multipart.max-request-size=50MB 

私はこのような例外が発生しました：

2016-09-15 11:04:43.936 WARN 23724 --- [ restartedMain] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'uploadController': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'multipart.location' in string value "${multipart.location}" 
2016-09-15 11:04:43.938 INFO 23724 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service Tomcat 
2016-09-15 11:04:43.952 INFO 23724 --- [ restartedMain] utoConfigurationReportLoggingInitializer : 

Error starting ApplicationContext. To display the auto-configuration report enable debug logging (start with --debug) 


2016-09-15 11:04:43.961 ERROR 23724 --- [ restartedMain] o.s.boot.SpringApplication    : Application startup failed 

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'uploadController': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'multipart.location' in string value "${multipart.location}" 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:355) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:776) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE] 
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE] 
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:313) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE] 
    at app.justgifit.JustGifItApplication.main(JustGifItApplication.java:10) [classes/:na] 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_92] 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_92] 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_92] 
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_92] 
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-1.4.0.RELEASE.jar:1.4.0.RELEASE] 
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'multipart.location' in string value "${multipart.location}" 
    at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:174) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:219) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:193) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.context.support.PropertySourcesPlaceholderConfigurer$2.resolveStringValue(PropertySourcesPlaceholderConfigurer.java:172) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:813) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1039) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1019) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE] 
... 22 common frames omitted 

しかし、ときに私が使用して春1.3.0.RELEASEと、次のapplication.propertiesを使用し、それだけで正常に動作します：

multipart.location=${java.io.tmpdir} 
multipart.max-file-size=50MB 
multipart.max-request-size=50MB 

主な違いは、application.propertieですなぜ私はそれがうまくいかないのか分かりません。 私はSpringフレームワークが新しく、これを解決するのにほぼ一日かかりました。どんな提案やアイデアも大歓迎です！

JustGifItApplication：

package app.justgifit 

import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 

@SpringBootApplication 
public class JustGifItApplication { 

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

UploadController：

package app.justgifit.controller; 

import java.io.File; 
import java.io.IOException; 
import java.lang.invoke.MethodHandles; 

import org.slf4j.Logger; 
import org.slf4j.LoggerFactory; 
import org.springframework.beans.factory.annotation.Value; 
import org.springframework.http.MediaType; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RequestMethod; 
import org.springframework.web.bind.annotation.RequestParam; 
import org.springframework.web.bind.annotation.RequestPart; 
import org.springframework.web.bind.annotation.RestController; 
import org.springframework.web.multipart.MultipartFile; 

@RestController 
public class UploadController { 

    private final static Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); 

    @Value("${multipart.location}") 
    private String location; 

    @RequestMapping(value = "/upload", method = RequestMethod.POST, produces = MediaType.IMAGE_GIF_VALUE) 
    public String upload(@RequestPart("file") MultipartFile file, 
        @RequestParam("start") int start, 
        @RequestParam("end") int end, 
        @RequestParam("speed") int speed, 
        @RequestParam("repeat") boolean repeat) throws IOException{ 
     File videoFile = new File(location + "/" + System.currentTimeMillis() + ".mp4"); 
     file.transferTo(videoFile); 

     log.info("Saved file to {}", videoFile.getAbsolutePath()); 

     return ""; 
    } 

} 

application.properties

spring.http.multipart.location=${java.io.tmpdir} 
spring.http.multipart.max-file-size=50MB 
spring.http.multipart.max-request-size=50MB 

のpom.xml

は、ここに私のコードです

Answer 1

コードを変更するのはどうですか？

@Value("${spring.http.multipart.location}") 
private String location; 

は、なぜあなたは、あなたがあなたの.propertiesファイルにspring.http.multipart.locationとしてそれを宣言したとき、春は魔法の鍵multipart.locationを持つプロパティを見つけることができると思いますか？