Problem with @RequestParam annotation.

[Narendra Dhande]

Hi all

I am trying to write the fileUploader controller.

The JSP code are :

<form method="post" action="validation" enctype="multipart/form-data">
			<input type="file" id="filename" name="filename" /> <input
				type="submit" value="Upload File" />
		</form>

The controller method is

@RequestMapping(value = "/validation/validation", method = RequestMethod.POST)
	public String post(@RequestParam(value="filename", required=false) MultipartFile file,
			HttpServletRequest req, HttpServletResponse response)
			throws Exception { ......

The request is mapped correctly to the method when I execute the code.

The Multipart resolver configured in context is

<bean id="multipartResolver"
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<!-- one of the properties available; the maximum file size in bytes -->
		<property name="maxUploadSize" value="10000000" />
	</bean>

The spring version I am using is 3.1.1 The application server is glassfish 3.1.2

The error is

INFO: 2012-06-26 19:20:46,006 [http-thread-pool-9090(5)] DEBUG org.springframework.web.servlet.DispatcherServlet - DispatcherServlet with name 'test' processing POST request for [/test/validation/validation]

INFO: 2012-06-26 19:20:46,052 [http-thread-pool-9090(5)] DEBUG org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Looking up handler method for path /validation/validation

INFO: 2012-06-26 19:20:46,053 [http-thread-pool-9090(5)] DEBUG org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Returning handler method [public java.lang.String in.mahadiscom.web.ValidationController.post(org.springframework.web.multipart.MultipartFile,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.lang.Exception]

INFO: 2012-06-26 19:20:46,053 [http-thread-pool-9090(5)] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'validationController'

INFO: 2012-06-26 19:20:46,068 [http-thread-pool-9090(5)] DEBUG org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver - Resolving exception from handler [public java.lang.String in.mahadiscom.web.ValidationController.post(org.springframework.web.multipart.MultipartFile,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.lang.Exception]: org.springframework.web.bind.MissingServletRequestParameterException: Required MultipartFile parameter 'filename' is not present

INFO: 2012-06-26 19:20:46,073 [http-thread-pool-9090(5)] DEBUG org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver - Resolving exception from handler [public java.lang.String in.mahadiscom.web.ValidationController.post(org.springframework.web.multipart.MultipartFile,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.lang.Exception]: org.springframework.web.bind.MissingServletRequestParameterException: Required MultipartFile parameter 'filename' is not present

INFO: 2012-06-26 19:20:46,073 [http-thread-pool-9090(5)] DEBUG org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver - Resolving exception from handler [public java.lang.String in.mahadiscom.web.ValidationController.post(org.springframework.web.multipart.MultipartFile,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.lang.Exception]: org.springframework.web.bind.MissingServletRequestParameterException: Required MultipartFile parameter 'filename' is not present

The browser return HTTP 400 with message descriptionThe request sent by the client was syntactically incorrect ().

Pl. Help

Thanks

[Bill Gorder]

This is not a problem with your file upload code this usually indicates something is wrong with your URL mappings. Check your mappings in web.xml and double check your @RequestMapping value it does not look right to me.

[Narendra Dhande]

Hi Bill,

The debug log shows me that the method is mapped correctly to URL.

Thanks

[Bill Gorder]

Ok so humor me.

change

@RequestMapping(value = "/validation/validation", method = RequestMethod.POST) 

to

@RequestMapping(value = "/validation", method = RequestMethod.POST) 

Also in your web.xml find where you have your dispatcher servlet mapping defined and make sure it is mapped to / as follows:

<servlet-mapping>
	<servlet-name>myServlet</servlet-name>
	<url-pattern>/</url-pattern>
</servlet-mapping>

When I created a simple sample project using your code with the above changes it works correctly so try that first.

If that does not work...

The part of your exception that says

Required MultipartFile parameter 'filename' is not present

usually pops up when the below is missing:

    <bean id="multipartResolver"  
            class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
            <!-- one of the properties available; the maximum file size in bytes -->  
            <property name="maxUploadSize" value="10000000" />  
     </bean>  

Now I know you showed you have that in your config, but do you have it scoped so that the dispatcher servlet can see it? I would also double check that. If none of this works post your web.xml so we can have a look at it.

[Narendra Dhande]

Hi Bill,

I had used similar solutions and worked fine. After some efforts I found the problem. The problem is the bug in the Glassfish 3.1.2. After installing the suggested patch it is working fine.
The JiRA link is Glassfish Jira

Thanks .

[Bill Gorder]

Glad you got it figured out, thanks for posting back with the solution.