Newbie: MultipartResolver Upload

[paulplee]

Hi, a newbie question: Any example of MultipartResolver? Or it could be: what did I do wrong?

In summary, I followed Ch 12.8 of the reference, and the following things went wrong:

- in my SimpleFormController, onSubmit was never called. None of the 3 onSubmit functions were called. Only processFormSubmission was called
- in the function processFormSubmission, I can get the "simple" properties like String, but cannot see the file. It is NULL

Here's what I did:

(1) edit the servlet.xml:

	<bean id="fileUploadController" class="web.FileUploadController">
		<property name="commandClass"><value>web.FileUploadBean</value></property>
		<property name="formView"><value>uploadReport</value></property>
		<property name="successView"><value>uploadConfirmation</value></property>
	</bean>
	
	<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<property name="maxUploadSize"><value>1000000000</value></property>
	</bean>

(2) created a simple Bean to test:

public class FileUploadBean {
    private byte[] file;
    private String username; 
    
    public void setFile(byte[] file) {
        this.file = file;
    }
    
    public byte[] getFile() {
        return file;
    }
    /**
     * @return Returns the username.
     */
    public String getUsername() {
        return username;
    }
    /**
     * @param username The username to set.
     */
    public void setUsername(String username) {
        this.username = username;
    }
}

(3) created FileUploadeController

public class FileUploadController extends SimpleFormController {
    protected void initBinder(HttpServletRequest request,
            ServletRequestDataBinder binder) throws ServletException {
        System.out.println("pre initBinder");
        binder.registerCustomEditor(byte[].class, "file", new ByteArrayMultipartFileEditor());
        System.out.println("post initBinder");
    }
    
    protected boolean isFormSubmission(HttpServletRequest arg0) {
        System.out.println("isFormSubmission: "+arg0);
        // TODO Auto-generated method stub
        return super.isFormSubmission(arg0);
    }

    protected ModelAndView processFormSubmission(HttpServletRequest arg0,
            HttpServletResponse arg1, Object arg2, BindException arg3)
            throws Exception {
        System.out.println("processFormSubmission");
        System.out.println("request = "+arg0);
        System.out.println("response = "+arg1);
        System.out.println("object = "+arg2);
        System.out.println("exception = "+arg3);
        
        FileUploadBean fub = (FileUploadBean)arg2;
        System.out.println("fub = "+fub);
        System.out.println("fub username "+fub.getUsername());
        System.out.println("fub file "+fub.getFile());
        // TODO Auto-generated method stub
        return super.processFormSubmission(arg0, arg1, arg2, arg3);
    }

    protected ModelAndView showForm(HttpServletRequest arg0,
            HttpServletResponse arg1, BindException arg2) throws Exception {
        System.out.println("showForm");
        // TODO Auto-generated method stub
        return super.showForm(arg0, arg1, arg2);
    }

    protected void doSubmitAction(Object arg0) throws Exception {
        System.out.println("doSubmitAction");
        // TODO Auto-generated method stub
        super.doSubmitAction(arg0);
    }

    protected ModelAndView onSubmit(Object arg0) throws Exception {
        System.out.println("onSubmit 1 arg");
        // TODO Auto-generated method stub
        return super.onSubmit(arg0);
    }

    protected ModelAndView onSubmit(Object arg0, BindException arg1)
            throws Exception {
        System.out.println("onSubmit 2 args");
        // TODO Auto-generated method stub
        return super.onSubmit(arg0, arg1);
    }

    protected ModelAndView onSubmit(HttpServletRequest arg0,
            HttpServletResponse arg1, Object arg2, BindException arg3)
            throws Exception {
        System.out.println("onSubmit 4 args");
        // TODO Auto-generated method stub
        return super.onSubmit(arg0, arg1, arg2, arg3);
    }
}

(4) create the uploadReport.jsp

<html>
<body>
	<h1>Upload a file</h1>
	<form method="POST" action="upload.form" encrypt="multipart/form-data">
		<input type="file" name="file"/>
		<input name="username" value="Test User"/><br>
		<input type="submit"/>
	</form>
</body>
</html>

Sorry if this seem a little entry-level, but I have spent hours googling and reading the javadoc and still have no idea where to go next. Any pointers will be greatly appreciated!

Paul

[katentim]

Should that be

entype="multipart/form-data"

[paulplee]

Yep, that seems to be the problem! I can't believe it's a typo...

Thanks!

[kehua]

I also followed Ch 12.8 of the reference, and the following things went wrong:
HTTP Status 404 - /springapp/upload.form

--------------------------------------------------------------------------------

type Status report

message /springapp/upload.form

description The requested resource (/springapp/upload.form) is not available.


--------------------------------------------------------------------------------

Apache Tomcat/5.0.27

by the way,Code Should be:
enctype="multipart/form-data"