public static void main(String args[]) {
Properties props =
new Properties();
// 参数配置
props.setProperty("mail.transport.protocol", "smtp");
// 使用的协议(JavaMail规范要求)
props.setProperty("mail.smtp.host", "smtp.exmail.qq.com");
// 发件人的邮箱的SMTP服务器地址
props.setProperty("mail.smtp.auth", "true");
// 需要请求认证
// PS:某些邮箱服务器要求SMTP连接需要使用SSL安全认证(为了提高安全性,邮箱支持SSL连接,也可以自己开启),
// 如果无法连接邮件服务器,仔细查看控制台打印的 log,如果有有类似"连接失败,要求 SSL安全连接"等错误,
// 开启 SSL安全连接
// SMTP服务器的端口(非 SSL连接的端口一般默认为 25,可以不添加,如果开启了SSL连接,
// 需要改为对应邮箱的SMTP服务器的端口,具体可查看对应邮箱服务的帮助,
// QQ邮箱的SMTP(SLL)端口为465或587
final String smtpPort = "465"
;
props.setProperty("mail.smtp.port"
, smtpPort);
props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"
);
props.setProperty("mail.smtp.socketFactory.fallback", "false"
);
props.setProperty("mail.smtp.socketFactory.port"
, smtpPort);
Session session =
Session.getDefaultInstance(props);
session.setDebug(false);
try {
Store store = session.getStore("imap"
);
store.connect("imap.exmail.qq.com", "it01@tofba.com", "*****");
// change the user and password accordingly
Folder folder = store.getFolder("inbox"
);
if (!
folder.exists()) {
System.out.println("inbox not found"
);
System.exit(0
);
}
folder.open(Folder.READ_ONLY);
Message[] messages =
folder.getMessages();
if (messages ==
null || messages.length <= 0
) {
System.out.println("this inbox no messages"
);
System.exit(0
);
}
for (Message message : messages) {
String subject =
message.getSubject();
if (StringUtils.isNotBlank(subject)) {
System.out.println("subject:" +
subject);
}
/*
* 解析邮件内容
*/
Object content =
message.getContent();
if (
null !=
content) {
if (content
instanceof MimeMultipart) {
MimeMultipart multipart =
(MimeMultipart)content;
parseMultipart(multipart);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 对复杂邮件的解析
*
* @param multipart
* @throws MessagingException
* @throws IOException
*/
public static void parseMultipart(Multipart multipart)
throws MessagingException, IOException {
int count =
multipart.getCount();
for (
int idx = 0; idx < count; idx++
) {
BodyPart bodyPart =
multipart.getBodyPart(idx);
System.out.println(bodyPart.getContentType());
if (bodyPart.isMimeType("text/plain"
)) {
System.out.println(bodyPart.getContent());
} else if (bodyPart.isMimeType("text/html"
)) {
System.out.println(bodyPart.getContent());
} else if (bodyPart.isMimeType("multipart/*"
)) {
Multipart mpart =
(Multipart)bodyPart.getContent();
parseMultipart(mpart);
} else if (bodyPart.isMimeType("application/octet-stream"
)) {
String disposition =
bodyPart.getDisposition();
System.out.println(disposition);
if (StringUtils.isNotBlank(disposition) &&
disposition.equalsIgnoreCase(BodyPart.ATTACHMENT)) {
String fileName =
bodyPart.getFileName();
InputStream is =
bodyPart.getInputStream();
copy(is, new FileOutputStream("D:\\tofba\\email\\" +
fileName));
}
}
}
}
/**
* 文件拷贝,在用户进行附件下载的时候,可以把附件的InputStream传给用户进行下载
*
* @param is
* @param os
* @throws IOException
*/
public static void copy(InputStream is, OutputStream os)
throws IOException {
byte[] bytes =
new byte[1024
];
int len = 0
;
while ((len = is.read(bytes)) != -1
) {
os.write(bytes, 0
, len);
}
if (os !=
null)
os.close();
if (is !=
null)
is.close();
}
转载于:https://www.cnblogs.com/zhc-hnust/p/9373435.html
相关资源：javaMail发送邮件 发送成功 收不到邮件 或收到邮件无主题无收件人乱码
