image file upload issue

[venkatesh.s]

Hi All,

I am working on uploading the image files in spring using the multipart file approach and i am not able to get through it successfully. I use CommonsMultipartResolver.

My POJO has these properties with accessor methods.

	private MultipartFile imageFile;

	private MultipartFile thumbnailFile;

My bean definition for CommonsMultipartResolver is as follows

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />

My view has the following defined.

<form:form id="form" name="form1" commandName="campaign" method="post"
	action="savecampaign.html" enctype="multipart/form-data">
	<legend>Images</legend><label>Thumbnail
	Image : </label> <input name="thumbnailFile" id="thumbnailFile" type="file" />
	<form:errors path="thumbnailFile" /> <br />
	<label>Item Image : </label> <input name="imageFile" type="file"
		id="itemImage" /> <form:errors path="imageFile" /> <br />
</form:form>

But i keep getting this error.

Failed to convert property value of type java.lang.String to required type org.springframework.web.multipart.MultipartFile for property thumbnailFile; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [org.springframework.web.multipart.MultipartFile] for property thumbnailFile: no matching editors or conversion strategy found

I am really confused if i am missing anything.

[chudak]

Read this:

http://static.springsource.org/sprin...#mvc-multipart

You need to register a custom binder in your controller. Did you do that?

[venkatesh.s]

The document does not say that we need to register any custom binder for MultipartFile.

"The third (and final) option is where one binds directly to a MultipartFile property declared on the (form backing) object's class. In this case one does not need to register any custom PropertyEditor because there is no type conversion to be performed."

[chudak]

Do you have commons fileupload in your classpath?

[venkatesh.s]

Yes,

<dependency>
	<groupId>commons-fileupload</groupId>
	<artifactId>commons-fileupload</artifactId>
	<version>1.1.1</version>
</dependency>