我目前正在尝试获取电子邮件附件的文件名 为此，我正在使用Java Mail。 我尝试使用getFileName（）和getDisposition函数，但它始终返回一个空值，并且我确定要使用的bodyPart是附件 然后，我查看附件的标题，发现了以下内容：
atnCida9h9YZu22t4QIA96yanqeY1GdMko1ASnJrwFRuhpsZVhRQOD2h4Uk1L4B8GiAdARYgpiHy:atnCida9h9YZu22t4QIA96yanqeY1GdMko1ASnJrwFRuhpsZVhRQOD2h4Uk1L4B8GiAdARYgpiHy
ARHDUYlnEilefN9pY9mmQRJuKcJVRQFMlsOfGXWFZgrLK9bIjZWh0DJtQCRYO7CmJDSla5rj3f8y:ARHDUYlnEilefN9pY9mmQRJuKcJVRQFMlsOfGXWFZgrLK9bIjZWh0DJtQCRYO7CmJDSla5rj3f8y
Ovd3EvuBvGYWhIf0A2kfV0zJ5nhKoZMAfaGVjten/MCs9EvrSyB3WNjDhpbkgeKVrtekT5KSZBh8:Ovd3EvuBvGYWhIf0A2kfV0zJ5nhKoZMAfaGVjten/MCs9EvrSyB3WNjDhpbkgeKVrtekT5KSZBh8
XZ2T1H8rXMmQzM8J9QkPnH7ETZjFA+c8Br8Z9wZGJh6lEhD9EF300yimLxhJ6QJN5OjDm5lPMmID:XZ2T1H8rXMmQzM8J9QkPnH7ETZjFA+c8Br8Z9wZGJh6lEhD9EF300yimLxhJ6QJN5OjDm5lPMmID
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LpnwrdB78K0xzcTHWmJ8SGj2yiEJ+/7HQzI8wPI3AAAA//8DAFBLAwQUAAYACAAAACEAfwE3GH0B:LpnwrdB78K0xzcTHWmJ8SGj2yiEJ+/7HQzI8wPI3AAAA//8DAFBLAwQUAAYACAAAACEAfwE3GH0B
AADVAgAAEAAIAWRvY1Byb3BzL2FwcC54bWwgogQBKKAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA:AADVAgAAEAAIAWRvY1Byb3BzL2FwcC54bWwgogQBKKAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAACcUk1PwzAMvSPxH6reWbodJjR5QWhjcOBLrMA5Stw2Ik2iJJvYv8eloxS4kZP9bL88vwQu:AAAAAACcUk1PwzAMvSPxH6reWbodJjR5QWhjcOBLrMA5Stw2Ik2iJJvYv8eloxS4kZP9bL88vwQu
3luT7TFE7ewyn06KPEMrndK2XubP5ebsPM9iElYJ4ywu8wPG/IKfnsBjcB5D0hgzorBxmTcp+QVj:3luT7TFE7ewyn06KPEMrndK2XubP5ebsPM9iElYJ4ywu8wPG/IKfnsBjcB5D0hgzorBxmTcp+QVj
UTbYijihsqVK5UIrEqWhZq6qtMS1k7sWbWKzopgzfE9oFaozPxDmPeNin/5Lqpzs9MWX8uCJj0OJ:UTbYijihsqVK5UIrEqWhZq6qtMS1k7sWbWKzopgzfE9oFaozPxDmPeNin/5Lqpzs9MWX8uCJj0OJ
rTciIb/vJs1EudQCG1AoXRKm1C3yaUH4kMGjqDHyKbA+gFcXVOTU0wewakQQMpGBfAZslMGl90ZL:rTciIb/vJs1EudQCG1AoXRKm1C3yaUH4kMGjqDHyKbA+gFcXVOTU0wewakQQMpGBfAZslMGl90ZL
kchYfqdlcNFVKXv4VJt108DGLUAbbFHugk6Hjn+cwq22vYo+IFVB1EH45ihtyGArhcEV7c4rYSIC:kchYfqdlcNFVKXv4VJt108DGLUAbbFHugk6Hjn+cwq22vYo+IFVB1EH45ihtyGArhcEV7c4rYSIC
+wZg5Vov7IE/PF3eX19lmzK7Dm7nSfax0N3zFp996dadK0eGn+Bo41edmq0XEn/tPsJhSygqWmbQ:+wZg5Vov7IE/PF3eX19lmzK7Dm7nSfax0N3zFp996dadK0eGn+Bo41edmq0XEn/tPsJhSygqWmbQ
MwBwQ48TTMdOs7ZG9dXzt9C5+dL/Uj6dTwo6n/Z9YWTC8H34BwAAAP//AwBQSwECLQAUAAYACAAA:MwBwQ48TTMdOs7ZG9dXzt9C5+dL/Uj6dTwo6n/Z9YWTC8H34BwAAAP//AwBQSwECLQAUAAYACAAA
ACEAo++7HWUBAABSBQAAEwAAAAAAAAAAAAAAAAAAAAAAW0NvbnRlbnRfVHlwZXNdLnhtbFBLAQIt:ACEAo++7HWUBAABSBQAAEwAAAAAAAAAAAAAAAAAAAAAAW0NvbnRlbnRfVHlwZXNdLnhtbFBLAQIt
ABQABgAIAAAAIQAekRq37wAAAE4CAAALAAAAAAAAAAAAAAAAAJ4DAABfcmVscy8ucmVsc1BLAQIt:ABQABgAIAAAAIQAekRq37wAAAE4CAAALAAAAAAAAAAAAAAAAAJ4DAABfcmVscy8ucmVsc1BLAQIt
ABQABgAIAAAAIQABM4tsCAEAALUDAAAcAAAAAAAAAAAAAAAAAL4GAAB3b3JkL19yZWxzL2RvY3Vt:ABQABgAIAAAAIQABM4tsCAEAALUDAAAcAAAAAAAAAAAAAAAAAL4GAAB3b3JkL19yZWxzL2RvY3Vt
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AHdvcmQvZG9jdW1lbnQueG1sUEsBAi0ACgAAAAAAAAAhAF3d0yo3+wEAN/sBABUAAAAAAAAAAAAA:AHdvcmQvZG9jdW1lbnQueG1sUEsBAi0ACgAAAAAAAAAhAF3d0yo3+wEAN/sBABUAAAAAAAAAAAAA
AAAAGg0AAHdvcmQvbWVkaWEvaW1hZ2UxLnBuZ1BLAQItABQABgAIAAAAIQCxiVTzBgYAAKUbAAAV:AAAAGg0AAHdvcmQvbWVkaWEvaW1hZ2UxLnBuZ1BLAQItABQABgAIAAAAIQCxiVTzBgYAAKUbAAAV
AAAAAAAAAAAAAAAAAIQIAgB3b3JkL3RoZW1lL3RoZW1lMS54bWxQSwECLQAUAAYACAAAACEAUHlx:AAAAAAAAAAAAAAAAAIQIAgB3b3JkL3RoZW1lL3RoZW1lMS54bWxQSwECLQAUAAYACAAAACEAUHlx
1bMDAAC8CQAAEQAAAAAAAAAAAAAAAAC9DgIAd29yZC9zZXR0aW5ncy54bWxQSwECLQAUAAYACAAA:1bMDAAC8CQAAEQAAAAAAAAAAAAAAAAC9DgIAd29yZC9zZXR0aW5ncy54bWxQSwECLQAUAAYACAAA
ACEAsT+4YiIBAABOAgAAFAAAAAAAAAAAAAAAAACfEgIAd29yZC93ZWJTZXR0aW5ncy54bWxQSwEC:ACEAsT+4YiIBAABOAgAAFAAAAAAAAAAAAAAAAACfEgIAd29yZC93ZWJTZXR0aW5ncy54bWxQSwEC
LQAUAAYACAAAACEAWtlzyH4BAADvAgAAEQAAAAAAAAAAAAAAAADzEwIAZG9jUHJvcHMvY29yZS54:LQAUAAYACAAAACEAWtlzyH4BAADvAgAAEQAAAAAAAAAAAAAAAADzEwIAZG9jUHJvcHMvY29yZS54
bWxQSwECLQAUAAYACAAAACEAe9FzPNALAABqcwAADwAAAAAAAAAAAAAAAACoFgIAd29yZC9zdHls:bWxQSwECLQAUAAYACAAAACEAe9FzPNALAABqcwAADwAAAAAAAAAAAAAAAACoFgIAd29yZC9zdHls
ZXMueG1sUEsBAi0AFAAGAAgAAAAhAFjUDzfwAQAAPwYAABIAAAAAAAAAAAAAAAAApSICAHdvcmQv:ZXMueG1sUEsBAi0AFAAGAAgAAAAhAFjUDzfwAQAAPwYAABIAAAAAAAAAAAAAAAAApSICAHdvcmQv
Zm9udFRhYmxlLnhtbFBLAQItABQABgAIAAAAIQB/ATcYfQEAANUCAAAQAAAAAAAAAAAAAAAAAMUk:Zm9udFRhYmxlLnhtbFBLAQItABQABgAIAAAAIQB/ATcYfQEAANUCAAAQAAAAAAAAAAAAAAAAAMUk
AgBkb2NQcm9wcy9hcHAueG1sUEsFBgAAAAAMAAwABAMAAHgnAgAAAA==:AgBkb2NQcm9wcy9hcHAueG1sUEsFBgAAAAAMAAwABAMAAHgnAgAAAA==
要查找附件，我正在使用此Java函数：
if(MailContentType.contains("multipart/MIXED")){
mult = (Multipart) getMail().getContent();
System.out.println(mult.getCount());
for(int i = 1; i < mult.getCount(); i++){
bodyP = (BodyPart) mult.getBodyPart(i);
headers = bodyP.getAllHeaders();
while (headers.hasMoreElements()) {
Header h = (Header) headers.nextElement();
//System.out.println(h.getName() + ":" + h.getValue());
//System.out.println("");
String mID = h.getName();
System.out.println((h.getName()) + ":" + (h.getValue()));
}
是否可以解码此附件的标头？