I have the following code:
if (formItems != null && formItems.size() > 0) {
// iterates over form's fields
for (FileItem item : formItems) {
// processes only fields that are not form fields
if (!item.isFormField()) {
String fileName = new File(item.getName()).getName();
String filePath = uploadPath + File.separator + fileName;
File storeFile = new File(filePath);
// saves the file on disk
item.write(storeFile);
session.setAttribute("image", fileName);
}
// processes only form fields
else {
String fieldname = item.getFieldName();
String fieldvalue = item.getString();
session.setAttribute(fieldname, fieldvalue);
}
}
}
I want to check a file is attached or not first. If attached then only upload the file. I have tried this:
if(item==null)
But this won't work. How can I check if a file attached or not? I have a file field:
<input type="file" name="image"/>
The item
is never null
.
Just check if the FileItem#getName()
(the file name) is empty and/or FileItem#getSize()
(the file size) equals to 0
.
In your particular case, with an <input type="file" name="image"/>
, that'll be :
if (!item.isFormField()) {
if ("image".equals(item.getFieldName())) {
if (item.getName() == null || item.getName().isEmpty()) {
// No file was been selected.
}
if (item.getSize() == 0) {
// No file was been selected, or it was an empty file.
}
}
}