form post
upload file
- file name: $upload.fileName 注:调用 Upload.getFileName()实现,以下同理
- file size: $upload.size
- file contentType: $upload.contentType
queryString parameter
- company: $company
- address: $address
form parameter
- name: $name
- phone: $phone
- submit: $submit
处理的Action是 HomeController.postForm