commons fileupload mutlipart/data-form, extracting values from the checkboxes

[Jeroen Nouws]

Hi everyone,

i have a JSP with a multipart/data-form which has a combination of textfields, file upload field and checkboxes.
I'm currently stuck at how to get the values from the different checkboxes to put them in an array.

here's the part in my servlet i use to extract the formfields and their input and put them in a map.

while(it.hasNext()){
                FileItem item = (FileItem) it.next();
                if(item.isFormField()){
                    String key = item.getFieldName();
                    if(key.equals("roles")){
                        //logic to extract the values from the checkboxes
                        break;
                    }
                    String value = item.getString();
                    if(key.equals("password")){
                        value=DigestUtils.shaHex(value);
                    }
                    formfields.put(key,value);

[Daniel Doboseru]

Well, a Checkbox will return only it's status, right? Selected / Deselected. So you want to record these states in a array? That would be quite easy.

Assuming, you will parse them inside the while loop, first, do your test/validations to locate a checkbox (in case you have other types of items too), then get it's state with .isSelected() method, and store the result in a simple boolean array, which you can define just before entering the loop ( private boolean[] bools = new boolean[10]; ). This way, you will store all the states.

PS: If this is not what you intended, please give a couple more details

[Ove Lindström]

Take a look at http://www.java2s.com/Tutorial/Java/0400__Servlet/ServletFormProcessorCheckBox.htm

When checking a input with type=checkbox, you are returning the value of the input in a String[] with the key of the checkbox group.