使用Java Mail API从Gmail导出所有电子邮件
因此,我正试图编写一个程序,从我的电子邮件地址抓取我的所有电子邮件,并将它们保存到一个文本文件中,我遇到的问题是使用Java Mail API抓取超过1封电子邮件 这是我用来获取工作正常的电子邮件的方法,但我想获取收件箱中的每封电子邮件:使用Java Mail API从Gmail导出所有电子邮件,java,email,gmail,Java,Email,Gmail,因此,我正试图编写一个程序,从我的电子邮件地址抓取我的所有电子邮件,并将它们保存到一个文本文件中,我遇到的问题是使用Java Mail API抓取超过1封电子邮件 这是我用来获取工作正常的电子邮件的方法,但我想获取收件箱中的每封电子邮件: public static void checkMail(String username, String password) { Properties props = new Properties(); props.setPropert
public static void checkMail(String username, String password) {
Properties props = new Properties();
props.setProperty("mail.store.protocol", "imaps");
try {
Session session = Session.getInstance(props, null);
Store store = session.getStore();
store.connect("imap.gmail.com", username, password);
Folder inbox = store.getFolder("INBOX");
inbox.open(Folder.READ_ONLY);
Message msg = inbox.getMessage(inbox.getMessageCount());
Address[] in = msg.getFrom();
for (Address address : in) {
System.out.println("FROM:" + address.toString());
}
Multipart mp = (Multipart) msg.getContent();
BodyPart bp = mp.getBodyPart(0);
System.out.println("SENT DATE:" + msg.getSentDate());
System.out.println("SUBJECT:" + msg.getSubject());
System.out.println("CONTENT:" + bp.getContent());
} catch (Exception mex) {
mex.printStackTrace();
}
}
如果有人能告诉我如何做或解释,我将不胜感激。如果您希望文件夹收件箱中的所有邮件都这样做:
public static void checkMail(String username, String password) {
Properties props = new Properties();
props.setProperty("mail.store.protocol", "imaps");
try {
Session session = Session.getInstance(props, null);
Store store = session.getStore();
store.connect("imap.gmail.com", username, password);
Folder inbox = store.getFolder("INBOX");
inbox.open(Folder.READ_ONLY);
Message[] msgs = inbox.getMessages();
for (Message msg : msgs) {
try {
Address[] in = msg.getFrom();
for (Address address : in) {
System.out.println("FROM:" + address.toString());
}
Multipart mp = (Multipart) msg.getContent();
BodyPart bp = mp.getBodyPart(0);
System.out.println("SENT DATE:" + msg.getSentDate());
System.out.println("SUBJECT:" + msg.getSubject());
System.out.println("CONTENT:" + bp.getContent());
} catch (Exception e) {
e.printStackTrace();
}
}
// close folder and store (normally in a finally block)
inbox.close(false);
store.close();
} catch (Exception mex) {
mex.printStackTrace();
}
}
如果要将其他文件夹中的邮件发送到其他文件夹,则必须对所有文件夹执行相同的操作。
您可以使用store.getDefaultFolder().list()获取它们(对所有文件夹执行此递归操作,因为文件夹可以有子文件夹)
看这里:
protected void recurseFolders(final Folder folder) {
// folder can hold messages
if ((folder.getType() & Folder.HOLDS_MESSAGES) != 0) {
// process them
}
// folder can hold other folders
if ((folder.getType() & Folder.HOLDS_FOLDERS) != 0) {
for (final Folder subfolder : folder.list()) {
// process them recursive
recurseFolders(subfolder);
}
}
}