CommonsMultipartResolver与春季会话相互干扰

Question

在spring中有多个部件配置的配置。

@Bean
public CommonsMultipartResolver multipartResolver() {
CommonsMultipartResolver resolver = new CommonsMultipartResolver();
resolver.setDefaultEncoding("utf-8");
resolver.setMaxInMemorySize(20480);
resolver.setMaxUploadSize(2048000000);
return resolver;
}

当添加以下依赖项时，它是正确的并成功地工作。

           <dependency>
                <groupId>org.springframework.session</groupId>
                <artifactId>spring-session</artifactId>
            </dependency>

提出以下例外情况：

错误org.springframework.web.multipart.support.MissingServletRequestPartException:所需的请求部件'file‘不存在所需的请求部件'file’不存在

哪里出问题了？

编辑：

它是相关的控制器：

@RequestMapping(value={"/save"}, method={org.springframework.web.bind.annotation.RequestMethod.POST})
  @ResponseBody
  public FileProviderDto save(@RequestParam("file") MultipartFile file, @RequestParam String fileCode)
     throws IOException, SQLException
   {

Answer 1

我添加这个配置并正确地工作。

@Bean
public CommonsMultipartResolver multipartResolver() {
    CommonsMultipartResolver resolver = new CommonsMultipartResolver();
    resolver.setDefaultEncoding("utf-8");
    resolver.setMaxInMemorySize(20480);
    resolver.setMaxUploadSize(2048000000);
    return resolver;
}

@Bean
@Order(0)
public MultipartFilter multipartFilter() {
    MultipartFilter multipartFilter = new MultipartFilter();
    multipartFilter.setMultipartResolverBeanName("multipartResolver");
    return multipartFilter;
}

然后跳过这样的MultipartAutoConfiguration.class：

@SpringBootApplication(exclude = { MultipartAutoConfiguration.class })