How to config “CommonsMultipartResolver” in spring4 without xml to upload file

Question

I use xml config spring4 is work well.like this：

Answer 1

From MultipartResolver Javadoc : To define an implementation, create a bean with the id "multipartResolver" in a DispatcherServlet's application context.

In your xml configuration, the bean has the correct id of multipartResolver, but not in your current java configuration. You should write :

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

or

@Bean(name = "multipartResolver")
public CommonsMultipartResolver createMultipartResolver() {
    CommonsMultipartResolver resolver=new CommonsMultipartResolver();
    resolver.setDefaultEncoding("utf-8");
    return resolver;
}