SpringBoot中的multipartResolver上传文件配置

compile ( 'commons-io:commons-io:1.4' )

compile( 'commons-fileupload:commons-fileupload:1.2.1' )

@Bean (name = "multipartResolver" )

public MultipartResolver multipartResolver(){

     CommonsMultipartResolver resolver = new CommonsMultipartResolver();

     resolver.setDefaultEncoding( "UTF-8" );

     //resolveLazily属性启用是为了推迟文件解析，以在在UploadAction中捕获文件大小异常

     resolver.setResolveLazily( true );

     resolver.setMaxInMemorySize( 40960 );

     //上传文件大小 50M 50*1024*1024

     resolver.setMaxUploadSize( 50 * 1024 * 1024 );

     return resolver;

}

@Configuration

@ConditionalOnClass ({ Servlet. class , StandardServletMultipartResolver. class ,

   MultipartConfigElement. class })

@ConditionalOnProperty (prefix = "spring.http.multipart" , name = "enabled" , matchIfMissing = true )

@EnableConfigurationProperties (MultipartProperties. class )

public class MultipartAutoConfiguration {

  private final MultipartProperties multipartProperties;

  public MultipartAutoConfiguration(MultipartProperties multipartProperties) {

   this .multipartProperties = multipartProperties;

  }

  @Bean

  @ConditionalOnMissingBean ({ MultipartConfigElement. class ,

    CommonsMultipartResolver. class })

  public MultipartConfigElement multipartConfigElement() {

   return this .multipartProperties.createMultipartConfig();

  }

  @Bean (name = DispatcherServlet.MULTIPART_RESOLVER_BEAN_NAME)

  @ConditionalOnMissingBean (MultipartResolver. class )

  public StandardServletMultipartResolver multipartResolver() {

   StandardServletMultipartResolver multipartResolver = new StandardServletMultipartResolver();

   multipartResolver.setResolveLazily( this .multipartProperties.isResolveLazily());

   return multipartResolver;

  }

spring:

   autoconfigure:

     exclude: org.springframework.boot.autoconfigure.web.servlet.MultipartAutoConfiguration

@Bean (name = "multipartResolver" )

public MultipartResolver multipartResolver() {

     CommonsMultipartResolver resolver = new CommonsMultipartResolver();

     resolver.setDefaultEncoding( "UTF-8" );

     return resolver;

}