How to create a file upload browser in spring roo?

[lukeb]

I'm trying the different solutions posted in this thread but I'm not able to setup a form to upload a file.

Could somebody post a complete example of a form with file upload?

It would be very precious.

Regards

LuKe

[Harald Walker]

This is my upload form:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<div xmlns:c="http://java.sun.com/jsp/jstl/core" xmlns:field="urn:jsptagdir:/WEB-INF/tags/form/fields" xmlns:form="urn:jsptagdir:/WEB-INF/tags/form" xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:spring="http://www.springframework.org/tags" version="2.0">
    <jsp:output omit-xml-declaration="yes"/>
    <form:create enctype="multipart/form-data" id="fc_my_domain_image" modelAttribute="image" path="/images">
     	<field:file field="file" id="c_my_domain_image_file" z="user-managed"/>
        <field:input disableFormBinding="true" field="image" id="c_my_domain_image_image" render="false" z="user-managed"/>
        <field:input disableFormBinding="true" field="fileName" id="c_my_domain_image_fileName" render="false" required="true" z="user-managed"/>
        <field:select disableFormBinding="true" field="format" id="c_my_domain_image_format" items="${imageformats}" path="imageformats" render="false" required="true" z="user-managed"/>
        <field:input disableFormBinding="true" field="width" id="c_my_domain_image_width" render="false" required="true" validationMessageCode="field_invalid_integer" z="user-managed"/>
        <field:input disableFormBinding="true" field="height" id="c_my_domain_image_height" render="false" required="true" validationMessageCode="field_invalid_integer" z="user-managed"/>
     </form:create>
</div>

Two changes are important here:

First the form:create has been extended to accept the optional enctype parameter (the previously linked Jira issue shows you how to do that).

Next I created the field.file tag, which is basically a modified version of the file.input tag with input type="file" as form element.

Except for the file upload in the create form all other fields are disabled and will be populated automatically.

[lukeb]

Thanks Harald Walker,

how can the other field be populated?

LuKe

[Harald Walker]

Thanks Harald Walker,

how can the other field be populated?

LuKe

That is being shown in
http://forum.springsource.org/showpo...44&postcount=4

[lukeb]

Hi Harald,

I followed your instructions but I got this error:

2010-11-15 09:26:10,973 [http-8080-5] ERROR org.springframework.web.servlet.tags.MessageTag - No message found under code 'label_my_domain_image' for locale 'en_US'.
javax.servlet.jsp.JspTagException: No message found under code 'label_my_domain_image' for locale 'en_US'.

Where is the error?

LuKe

[lukeb]

Ok, I found where is the error. I'll try to solve it.

LuKe

[Harald Walker]

Hi Harald,

I followed your instructions but I got this error:

2010-11-15 09:26:10,973 [http-8080-5] ERROR org.springframework.web.servlet.tags.MessageTag - No message found under code 'label_my_domain_image' for locale 'en_US'.
javax.servlet.jsp.JspTagException: No message found under code 'label_my_domain_image' for locale 'en_US'.

Where is the error?

LuKe

The error message is pretty clear. So either add the message or change id="c_my_domain_image_image" to one of your domain objects which already has an entry in application.properties.

Have a look at the tag libraries to see why this is happening and how ROO is working. Based on the id attribute the label message key is being determined.

[lukeb]

Finally I was able to upload my file.
The problem is that the other fields are not stored on the database table.

Any idea why?

Furthermore, normally after saving a record roo redirects to a page that show the record just stored.
In case of the upload form roo return to the form (but the file has been uploaded).

LuKe

[Harald Walker]

Finally I was able to upload my file.
The problem is that the other fields are not stored on the database table.

Any idea why?
LuKe

Could you show us your entity class and controller?

[lukeb]

Big:

@RooJavaBean
@RooToString
@RooEntity
public class Big {

@NotNull
@Size(max = 10240)
private String content;
@NotNull
@Size(max = 20)
private String name;
@Transient
private CommonsMultipartFile file; // added

private String fileName; // added
    
private long size; //added

public CommonsMultipartFile getFile() {
return file;
}

// save file to disk ,save filename , file size to database
public void setFile(CommonsMultipartFile file) {
        
this.file = file;
this.fileName = file.getOriginalFilename();
this.size = file.getSize();
System.out.println("hehe  this.fileName: " + this.fileName + " ,  " + file.getClass().getName());

try {
System.out.println("try 01");
InputStream in = file.getInputStream();        
FileOutputStream f = new FileOutputStream("/opt/" + file.getOriginalFilename());
int ch = 0;
while ((ch = in.read()) != -1) {    
f.write(ch);
}
f.flush();
f.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}

BigController:

@RooWebScaffold(path = "bigs", formBackingObject = Big.class)
@RequestMapping("/bigs")
@Controller
public class BigController {
}