File upload 所需的MultipartFile参数'；文件'；不在场_File Upload_Spring Boot

File upload 所需的MultipartFile参数'；文件'；不在场

file-upload spring-boot

File upload 所需的MultipartFile参数'；文件'；不在场,file-upload,spring-boot,File Upload,Spring Boot,我正在使用SpringBoot测试上传功能，并获得 '所需的MultipartFile参数'file'不存在' 错误。以下是1）JSP、2）控制器3）配置类4）嵌入式tomcat日志 JSP页面 ---------------------------------------------------------------------------- <!DOCTYPE html> <%@ taglib prefix="spring" uri="http://www.spring

我正在使用SpringBoot测试上传功能，并获得 '所需的MultipartFile参数'file'不存在' 错误。以下是1）JSP、2）控制器3）配置类4）嵌入式tomcat日志

JSP页面

----------------------------------------------------------------------------
<!DOCTYPE html>

<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<html lang="en">

<body>
    <br>Message: ${message}
    <h2>List Of Objects</h2>

    <br>
    <h2>Upload New File to this Bucket</h2>
    <form action="uploadObject" method="post" enctype="multipart/form-data">
        <table width="60%" border="1" cellspacing="0">
            <tr>
                <td width="35%"><strong>File to upload</strong></td>
                <td width="65%"><input type="file" name="file" /></td>
            </tr>
            <tr>
                <td>&nbsp;</td>
                <td><input type="submit" name="submit" value="Add" /></td>
            </tr>
        </table>
    </form>
</body>
</html>

4）添加的Tomcat日志：

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::            (v1.0.0.RC4)

2014-03-28 14:41:01.216  INFO 2852 --- [           main] c.PiranhaStorageServiceClientApplication : Starting PiranhaStorageServiceClientApplication on USDSFOSFC1NBOPY with PID 2852 (C:\a\workspace\sandbox\s3-poc-client\target\classes started by 310152252)
2014-03-28 14:41:01.220 DEBUG 2852 --- [           main] o.s.boot.SpringApplication               : Loading source class com.phi.piranha.client.config.PiranhaStorageServiceClientApplication
2014-03-28 14:41:01.270  INFO 2852 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6f434304: startup date [Fri Mar 28 14:41:01 PDT 2014]; root of context hierarchy
2014-03-28 14:41:01.273 DEBUG 2852 --- [           main] ationConfigEmbeddedWebApplicationContext : Bean factory for org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6f434304: org.springframework.beans.factory.support.DefaultListableBeanFactory@62b08658: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,piranhaStorageServiceClientApplication]; root of factory hierarchy
2014-03-28 14:41:01.897  INFO 2852 --- [           main] o.s.b.f.s.DefaultListableBeanFactory     : Overriding bean definition for bean 'multipartResolver': replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=piranhaStorageServiceClientApplication; factoryMethodName=multipartResolver; initMethodName=null; destroyMethodName=(inferred); defined in class com.phi.piranha.client.config.PiranhaStorageServiceClientApplication] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.MultipartAutoConfiguration; factoryMethodName=multipartResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/MultipartAutoConfiguration.class]]
2014-03-28 14:41:02.188 DEBUG 2852 --- [           main] ationConfigEmbeddedWebApplicationContext : Using MessageSource [org.springframework.context.support.ResourceBundleMessageSource: basenames=[messages]]
2014-03-28 14:41:02.189 DEBUG 2852 --- [           main] ationConfigEmbeddedWebApplicationContext : Using ApplicationEventMulticaster [org.springframework.context.event.SimpleApplicationEventMulticaster@58a1c2bf]
2014-03-28 14:41:02.495 DEBUG 2852 --- [           main] .t.TomcatEmbeddedServletContainerFactory : Code archive: C:\Users\310152252\.m2\repository\org\springframework\boot\spring-boot\1.0.0.RC4\spring-boot-1.0.0.RC4.jar
2014-03-28 14:41:02.495 DEBUG 2852 --- [           main] .t.TomcatEmbeddedServletContainerFactory : Code archive: C:\Users\310152252\.m2\repository\org\springframework\boot\spring-boot\1.0.0.RC4\spring-boot-1.0.0.RC4.jar
2014-03-28 14:41:02.496 DEBUG 2852 --- [           main] .t.TomcatEmbeddedServletContainerFactory : Document root: C:\a\workspace\sandbox\s3-poc-client\src\main\webapp
2014-03-28 14:41:02.546  INFO 2852 --- [           main] .t.TomcatEmbeddedServletContainerFactory : Server initialized with port: 9090
2014-03-28 14:41:02.884  INFO 2852 --- [           main] o.apache.catalina.core.StandardService   : Starting service Tomcat
2014-03-28 14:41:02.885  INFO 2852 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/7.0.52
2014-03-28 14:41:03.077  INFO 2852 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2014-03-28 14:41:03.077  INFO 2852 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1811 ms
2014-03-28 14:41:03.810  INFO 2852 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean        : Mapping servlet: 'dispatcherServlet' to [/]
2014-03-28 14:41:03.813  INFO 2852 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean  : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2014-03-28 14:41:04.356  INFO 2852 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2014-03-28 14:41:04.483  INFO 2852 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2014-03-28 14:41:04.483  INFO 2852 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2014-03-28 14:41:04.744  INFO 2852 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2014-03-28 14:41:04.763 DEBUG 2852 --- [           main] ationConfigEmbeddedWebApplicationContext : Unable to locate LifecycleProcessor with name 'lifecycleProcessor': using default [org.springframework.context.support.DefaultLifecycleProcessor@11a91abc]
2014-03-28 14:41:04.765 DEBUG 2852 --- [           main] utoConfigurationReportLoggingInitializer : 


=========================
AUTO-CONFIGURATION REPORT
=========================


Positive matches:
-----------------

   MessageSourceAutoConfiguration
      - @ConditionalOnMissingBean (types: org.springframework.context.MessageSource; SearchStrategy: all) found no beans (OnBeanCondition)

   PropertyPlaceholderAutoConfiguration#propertySourcesPlaceholderConfigurer
      - @ConditionalOnMissingBean (types: org.springframework.context.support.PropertySourcesPlaceholderConfigurer; SearchStrategy: current) found no beans (OnBeanCondition)

   JmxAutoConfiguration
      - @ConditionalOnClass classes found: org.springframework.jmx.export.MBeanExporter (OnClassCondition)
      - SpEL expression on org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration: ${spring.jmx.enabled:true} (OnExpressionCondition)
      - @ConditionalOnMissingBean (types: org.springframework.jmx.export.MBeanExporter; SearchStrategy: all) found no beans (OnBeanCondition)

   DispatcherServletAutoConfiguration
      - found web application StandardServletEnvironment (OnWebApplicationCondition)
      - @ConditionalOnClass classes found: org.springframework.web.servlet.DispatcherServlet (OnClassCondition)

   DispatcherServletAutoConfiguration.DispatcherServletConfiguration
      - no DispatcherServlet found (DispatcherServletAutoConfiguration.DefaultDispatcherServletCondition)
      - @ConditionalOnClass classes found: javax.servlet.ServletRegistration (OnClassCondition)

   EmbeddedServletContainerAutoConfiguration
      - found web application StandardServletEnvironment (OnWebApplicationCondition)

   EmbeddedServletContainerAutoConfiguration.EmbeddedTomcat
      - @ConditionalOnClass classes found: javax.servlet.Servlet,org.apache.catalina.startup.Tomcat (OnClassCondition)
      - @ConditionalOnMissingBean (types: org.springframework.boot.context.embedded.EmbeddedServletContainerFactory; SearchStrategy: current) found no beans (OnBeanCondition)

   HttpMessageConvertersAutoConfiguration
      - @ConditionalOnClass classes found: org.springframework.http.converter.HttpMessageConverter (OnClassCondition)

   HttpMessageConvertersAutoConfiguration#messageConverters
      - @ConditionalOnMissingBean (types: org.springframework.boot.autoconfigure.web.HttpMessageConverters; SearchStrategy: all) found no beans (OnBeanCondition)

   HttpMessageConvertersAutoConfiguration.ObjectMappers
      - @ConditionalOnClass classes found: com.fasterxml.jackson.databind.ObjectMapper (OnClassCondition)

   HttpMessageConvertersAutoConfiguration.ObjectMappers#jacksonObjectMapper
      - @ConditionalOnMissingBean (types: com.fasterxml.jackson.databind.ObjectMapper; SearchStrategy: all) found no beans (OnBeanCondition)

   HttpMessageConvertersAutoConfiguration.ObjectMappers#mappingJackson2HttpMessageConverter
      - @ConditionalOnMissingBean (types: org.springframework.http.converter.json.MappingJackson2HttpMessageConverter; SearchStrategy: all) found no beans (OnBeanCondition)

   MultipartAutoConfiguration
      - @ConditionalOnClass classes found: javax.servlet.Servlet,org.springframework.web.multipart.support.StandardServletMultipartResolver (OnClassCondition)
      - @ConditionalOnBean (types: javax.servlet.MultipartConfigElement; SearchStrategy: all) found the following [multipartConfigElement] (OnBeanCondition)

   ServerPropertiesAutoConfiguration
      - found web application StandardServletEnvironment (OnWebApplicationCondition)

   ServerPropertiesAutoConfiguration#serverProperties
      - @ConditionalOnMissingBean (types: org.springframework.boot.autoconfigure.web.ServerProperties; SearchStrategy: current) found no beans (OnBeanCondition)

   WebMvcAutoConfiguration
      - found web application StandardServletEnvironment (OnWebApplicationCondition)
      - @ConditionalOnClass classes found: javax.servlet.Servlet,org.springframework.web.servlet.DispatcherServlet,org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter (OnClassCondition)
      - @ConditionalOnMissingBean (types: org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport; SearchStrategy: all) found no beans (OnBeanCondition)

   WebMvcAutoConfiguration#hiddenHttpMethodFilter
      - @ConditionalOnMissingBean (types: org.springframework.web.filter.HiddenHttpMethodFilter; SearchStrategy: all) found no beans (OnBeanCondition)

   WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#defaultViewResolver
      - @ConditionalOnMissingBean (types: org.springframework.web.servlet.view.InternalResourceViewResolver; SearchStrategy: all) found no beans (OnBeanCondition)

   WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#requestContextListener
      - @ConditionalOnMissingBean (types: org.springframework.web.context.request.RequestContextListener; SearchStrategy: all) found no beans (OnBeanCondition)


Negative matches:
-----------------

   RabbitAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.amqp.rabbit.core.RabbitTemplate,com.rabbitmq.client.Channel (OnClassCondition)

   AopAutoConfiguration
      - required @ConditionalOnClass classes not found: org.aspectj.lang.annotation.Aspect,org.aspectj.lang.reflect.Advice (OnClassCondition)

   BatchAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.batch.core.launch.JobLauncher,org.springframework.jdbc.core.JdbcOperations (OnClassCondition)

   JpaRepositoriesAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.data.jpa.repository.JpaRepository (OnClassCondition)

   MongoRepositoriesAutoConfiguration
      - required @ConditionalOnClass classes not found: com.mongodb.Mongo,org.springframework.data.mongodb.repository.MongoRepository (OnClassCondition)

   MongoTemplateAutoConfiguration
      - required @ConditionalOnClass classes not found: com.mongodb.Mongo,org.springframework.data.mongodb.core.MongoTemplate (OnClassCondition)

   DataSourceAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType (OnClassCondition)

   DataSourceTransactionManagerAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.jdbc.core.JdbcTemplate,org.springframework.transaction.PlatformTransactionManager (OnClassCondition)

   JmsTemplateAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.jms.core.JmsTemplate,javax.jms.ConnectionFactory (OnClassCondition)

   DeviceResolverAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.mobile.device.DeviceResolverHandlerInterceptor,org.springframework.mobile.device.DeviceHandlerMethodArgumentResolver (OnClassCondition)

   MongoAutoConfiguration
      - required @ConditionalOnClass classes not found: com.mongodb.Mongo (OnClassCondition)

   HibernateJpaAutoConfiguration
      - did not find HibernateEntityManager class (HibernateJpaAutoConfiguration.HibernateEntityManagerCondition)

   ReactorAutoConfiguration
      - required @ConditionalOnClass classes not found: reactor.spring.context.config.EnableReactor (OnClassCondition)

   RedisAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.data.redis.connection.lettuce.LettuceConnection,org.springframework.data.redis.core.RedisOperations,com.lambdaworks.redis.RedisClient (OnClassCondition)

   SecurityAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.security.authentication.AuthenticationManager (OnClassCondition)

   ThymeleafAutoConfiguration
      - required @ConditionalOnClass classes not found: org.thymeleaf.spring4.SpringTemplateEngine (OnClassCondition)

   EmbeddedServletContainerAutoConfiguration.EmbeddedJetty
      - required @ConditionalOnClass classes not found: org.eclipse.jetty.server.Server,org.eclipse.jetty.util.Loader (OnClassCondition)

   WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#beanNameViewResolver
      - @ConditionalOnBean (types: org.springframework.web.servlet.View; SearchStrategy: all) found no beans (OnBeanCondition)

   WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#viewResolver
      - @ConditionalOnBean (types: org.springframework.web.servlet.View; SearchStrategy: all) found no beans (OnBeanCondition)

   WebSocketAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.web.socket.WebSocketHandler (OnClassCondition)



2014-03-28 14:41:04.821  INFO 2852 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port: 9090
2014-03-28 14:41:04.829  INFO 2852 --- [           main] c.PiranhaStorageServiceClientApplication : Started PiranhaStorageServiceClientApplication in 4.231 seconds (JVM running for 5.249)

我认为这是Spring Boot RC4中的一个bug。您尝试过RC5还是快照？

我发现spring boot中的MultipartAutoConfiguration存在问题。我禁用了它，并在web配置中添加了@Bean，它成功了。基于这个异常，我看到Jackson映射器试图解析多部分内容，而不是多部分解析器本身

下面是片段

@EnableAutoConfiguration(exclude={MultipartAutoConfiguration.class}

在webconfig类中添加以下内容

@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {

@Bean(name = "multipartResolver")
public CommonsMultipartResolver multipartResolver() {
    logger.info("Loading the multipart resolver");
    CommonsMultipartResolver multipartResolver 
            = new CommonsMultipartResolver();
    return multipartResolver;
}

1.0.1.BUILD-SNAPSHOT似乎存在与下面的日志相同的问题。ApplicationContext@3fc056f8：启动日期【2014年4月1日星期二16:21:24】；上下文层次结构的根目录2014-04-01 16:21:24.645信息5692-[application.main（）]o.s.b.f.s.DefaultListableBeanFactory：重写bean“multipartResolver”的bean定义：替换[root bean:c class[null]；它对我有效（例如《入门指南》）。我认为该日志语句是正常的。已解决，它可用于将文件上载到@Controller。仍然可以看到放置到@RestController的问题，张贴在此处感谢您的帮助花费数小时研究后，这是正确的答案。@ashoka请为此提供pom.xml依赖项

@EnableAutoConfiguration(exclude={MultipartAutoConfiguration.class}

@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {

@Bean(name = "multipartResolver")
public CommonsMultipartResolver multipartResolver() {
    logger.info("Loading the multipart resolver");
    CommonsMultipartResolver multipartResolver 
            = new CommonsMultipartResolver();
    return multipartResolver;
}