Solo per scopi didattici, desidero creare un file di tipo MIME. C'è qualche Java API disponibile per creare file? Voglio incorporare la risposta pkcs7 in questo file.Creazione di file con codifica MIME in Java
Content-Type: multipart/mixed; boundary="=_1_1440399813_23993"
Content-Transfer-Encoding: 8bit
This is a MIME-formatted message. If you see this text it means that your
E-mail software does not support MIME-formatted messages.
--=_1_1440399813_23993
Content-Disposition: attachment; filename=hello.pdf
Content-Type: application/pdf
Content-Transfer-Encoding: base64
MMDAwMCBuIAowMDAwMDA1MzUwIDAwMDAwIG4g
CnRyYWlsZXIKPDwvU2l6ZSAxNC9Sb290IDEyIDAgUgovSW5mbyAxMyAwIFIKL0lEIFsgPDZCQjND
QzhCOTkyNDMxMkIxMEZDOUI1MjM3NEQzODYyPgo8NkJCM0NDOEI5OTI0MzEyQjEwRkM5QjUyMzc0
RDM4NjI+IF0KL0RvY0NoZWNrc3VtIC9FNUJGNDQ1NENFRUY4RDk0RjNGRDM4NUU5NTFEOERBNAo+
PgpzdGFydHhyZWYKNTUyNQolJUVPRgo=
--=_1_1440399813_23993
Content-Disposition: attachment; filename=hello.pdf.p7s
Content-Type: application/pkcs7-mime
Content-Transfer-Encoding: base64
Lxbtj3FFg7Ss7fxsq/pSBHYBTLlDZ9K1
mmMmCygSi6+JMfbqj/vu50L79qtq3TgfMXh8GIOWqpiIh6c4/U29T6yZIBFktqiS1vRWiONM9OCx
WlrP70y9XePc/L+HyBeuUjFNCnSsxVO1atgYgLI4GdXu2jc1wTonuQVmNbsTtQ2r27SiM9eTkJYW
jrURoe5lBMTQ6rxGZWdB8bnQXjvQhmOqoDmXJ161MZ/jxbTEwHclDuKggOG29nEfZe/ybq25Fyu8
k01tvUXJJ1EanVZQwFVaoqOmR6W1/HGSxB3S7A==
--=_1_1440399813_23993--
C'è qualche api disponibile per creare questo tipo di file? Posso dare qualsiasi estensione per questo file? Sono molto nuovo in questo settore.