File uploading not working in spring mvc using spring form

Question

I have a jsp page in which i have used spring form tag so that i can use model attribute and bind data to it. It was working fine on submit the form but after adding encty

Answer 1

On its own, DispatcherServlet doesn't know how to handle multipart form data; that's why we require multipart resolver.

You should register it in your servlet-config:

    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="500000" />
    </bean>

Use CommonsMultipartFile or MultipartFile instead of File in your User object:

private CommonsMultipartFile imageFile;

You can try this code to save file:

File imageFileSave = new File(Constants.MEDIA_FILE_PATH);
FileUtils.writeByteArrayToFile(imageFileSave , imageFile.getBytes());