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I don't have how you have written code in your html or jsp. I think the following example solve your problem:
you need to put the commons-fileupload.jar in your classpath for the multipart resolver to work.
The following example shows how to use the CommonsMultipartResolver: <beans> <!-- lets use the Commons-based implementation of the MultipartResolver interface --> <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="100000"/> </bean> <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <value> /upload.form=fileUploadController </value> </property> </bean>
<bean id="fileUploadController" class="examples.FileUploadController"> <property name="commandClass" value="examples.FileUploadBean"/> <property name="formView" value="fileuploadform"/> <property name="successView" value="confirmation"/> </bean> </beans> To actually let the user upload a file, we have to create a (HTML) form: <html> <head> <title>Upload a file please</title> </head> <body> <h1>Please upload a file</h1> <form method="post" action="upload.form" enctype="multipart/form-data"> <input type="file" name="file"/> <input type="submit"/> </form> </body> </html>
After that, create the controller and the actual class to hold the file property.
public class FileUploadController extends SimpleFormController { protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command, BindException errors) throws ServletException, IOException { // cast the bean FileUploadBean bean = (FileUploadBean) command; let's see if there's content there byte[] file = bean.getFile(); if (file == null) { // the user did not upload anything } // well, let's do nothing with the bean for now and return return super.onSubmit(request, response, command, errors); } protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) throws ServletException { // to actually be able to convert Multipart instance to byte[] // we have to register a custom editor binder.registerCustomEditor(byte[].class, new ByteArrayMultipartFileEditor()); // now Spring knows how to handle multipart object and convert them } } public class FileUploadBean { private byte[] file; public void setFile(byte[] file) { this.file = file; } public byte[] getFile() { return file; } }
phani babu
Greenhorn
Joined: May 16, 2006
Posts: 8
posted
0
Hi,
I don't have how you have written code in your html or jsp. I think the following example solve your problem:
you need to put the commons-fileupload.jar in your classpath for the multipart resolver to work.
The following example shows how to use the CommonsMultipartResolver: <beans> <!-- lets use the Commons-based implementation of the MultipartResolver interface --> <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="100000"/> </bean> <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <value> /upload.form=fileUploadController </value> </property> </bean>
<bean id="fileUploadController" class="examples.FileUploadController"> <property name="commandClass" value="examples.FileUploadBean"/> <property name="formView" value="fileuploadform"/> <property name="successView" value="confirmation"/> </bean> </beans> To actually let the user upload a file, we have to create a (HTML) form: <html> <head> <title>Upload a file please</title> </head> <body> <h1>Please upload a file</h1> <form method="post" action="upload.form" enctype="multipart/form-data"> <input type="file" name="file"/> <input type="submit"/> </form> </body> </html>
After that, create the controller and the actual class to hold the file property.
public class FileUploadController extends SimpleFormController { protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command, BindException errors) throws ServletException, IOException { // cast the bean FileUploadBean bean = (FileUploadBean) command; let's see if there's content there byte[] file = bean.getFile(); if (file == null) { // the user did not upload anything } // well, let's do nothing with the bean for now and return return super.onSubmit(request, response, command, errors); } protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) throws ServletException { // to actually be able to convert Multipart instance to byte[] // we have to register a custom editor binder.registerCustomEditor(byte[].class, new ByteArrayMultipartFileEditor()); // now Spring knows how to handle multipart object and convert them } } public class FileUploadBean { private byte[] file; public void setFile(byte[] file) { this.file = file; } public byte[] getFile() { return file; } }
Ishika
Greenhorn
Joined: Aug 07, 2008
Posts: 12
posted
0
thnks,but my html file is same as the one you posted..but still it is not working.
phani babu
Greenhorn
Joined: May 16, 2006
Posts: 8
posted
0
Change the code in controller and bean definitions in configuration file as per above given example.It might solve your problem.
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Hello ranchers, Thanks a lot now i m able to upload file.But facing one problem. ie.If my file is text file ,it is not getting saved as text file,it is getting saved without any extension.For opening that file i have always do a openwith -->Notepad. any help will be appreciated. Thanks in advance.
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As to your question, what do you mean by "downloading"? Assuming this is a web app, can't you place the file in a public directory, and provide a link to it? If not, you can stream the file contents to the client as shown in http://faq.javaranch.com/java/CodeBarnSimpleStream
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