kennethteo.com

 public class ImageUploadController extends SimpleFormController {
 
	protected String fileUploadLocation;
 
	protected ModelAndView onSubmit(
	        HttpServletRequest request,
	        HttpServletResponse response,
	        Object command,
 
	        BindException errors) throws Exception {
 
	         // cast the bean - POJO
	        FileUploadBean bean = (FileUploadBean) command;
 
	        // let's see if there's content there
	        MultipartFile imageFile = bean.getFile();
 
	        //Check upload file
	        if (imageFile.getSize() == 0) {
	             //the user did not upload anything
			throw new Exception("No file uploaded");
	        }
	        //Get image filename
	        String fileName = imageFile.getOriginalFilename();
 
	        int index = fileName.toLowerCase().indexOf("jpg");
	        String fileName = "test.jpg";
 
	        //Create new File Object
	        String fileSeparator = System.getProperty("file.separator");
	        File newFile = new File(assetsLocation + fileSeparator + fileUploadLocation + fileSeparator + fileName);
 
	        //check for file
			if (newFile.exists()) {
			    try {
			        // Create file if it does not exist
			        boolean success = newFile.createNewFile();
			        if (success) {
			            	// File did not exist and was created
					System.out.println("File created");
			        } else {
			            // File already exists
					System.out.println("File not created");
			        }
			    } catch (IOException e) {
				// Handle your exception
			    }
			}
		    imageFile.transferTo(newFile);
	        return super.onSubmit(request, response, command, errors);
	    }
}

<servlet>
	<servlet-name>profileImageUpload</servlet-name>
	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
	<servlet-name>profileImageUpload</servlet-name>
	<url-pattern>*.form</url-pattern>
</servlet-mapping>
 
imageUpload-servlet.xml
<pre lang="xml" line="1">
<?xml version="1.0" encoding="UTF-8"?>
 
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
	<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<!-- Limit uploads to small (5KB) files for this sample -->
		<property name="maxUploadSize" value="5120" />
	</bean>
 
	<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="location" value="/WEB-INF/test.properties"/>
	</bean>
	<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="/upload.form">fileUploadController</prop>
            </props>
        </property>
    </bean>
 
    <bean id="fileUploadController" class="com.someclass.ImageUploadController">
        <property name="fileUploadLocation"><value>${fileuploadimage.location}</value></property>
        <property name="assetsLocation"><value>${fileuploadimage.assets}</value></property>
        <property name="commandClass"><value>com.someclass.FileUploadBean</value></property>
        <property name="successView"><value>confirmation.jsp</value></property>
    </bean>
</beans>

 
<?xml version="1.0" encoding="utf-8"?>
 
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        creationComplete="init();">
 
    <mx:Script>
        <![CDATA[
            [Bindable]
            private var fileRef:FileReference;
 
            private const FILE_UPLOAD_URL:String = "http://localhost:8080/demo/upload.form";
 
            private function init():void {
                fileRef = new FileReference();
                fileRef.addEventListener(Event.SELECT, fileRef_select);
                fileRef.addEventListener(ProgressEvent.PROGRESS, progressHandler);
                fileRef.addEventListener(Event.COMPLETE, fileRef_complete);
            }
 
            private function browseAndUpload():void {
                fileRef.browse();
                message.text = "";
            }
 
            private function fileRef_select(evt:Event):void {
                try {
                    message.text = "size (bytes): " + numberFormatter.format(fileRef.size);
                    var request:URLRequest = new URLRequest(FILE_UPLOAD_URL);
                    request.method = URLRequestMethod.POST;
                    var uploaderReqVars:URLVariables = new URLVariables("var=samevalue");
                    request.data = uploaderReqVars;
                    fileRef.upload(request, "file");
                } catch (err:Error) {
                    message.text = "ERROR: zero-byte file";
                }
            }
 
            private function fileRef_progress(evt:ProgressEvent):void {
                progressBar.setProgress(Number(evt.bytesLoaded), Number(evt.bytesTotal));
            }
 
            private function progressHandler(event:ProgressEvent):void {
            var file:FileReference = FileReference(event.target);
            progressBar.setProgress( Number(event.bytesLoaded), Number(event.bytesTotal));
        }
 
            private function fileRef_complete(evt:Event):void {
                message.text += " (complete)";
            }
        ]]>
    </mx:Script>
<mx:NumberFormatter id="numberFormatter" />
	<mx:ApplicationControlBar>
 
 
	    <mx:Button label="Upload file"
	            click="browseAndUpload();" />
	    <mx:Label id="message" />
	    <mx:ProgressBar id="progressBar" mode="manual"
	            visible="true" />
	</mx:ApplicationControlBar>
 
 
</mx:Application>