如何连接到 Gmail 并确定哪些邮件有附件？然后我想下载每个附件，在处理每条消息时打印出主题：和发件人：。
anon
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13 回答
154
硬一个:-)
import email, getpass, imaplib, os
detach_dir = '.' # directory where to save attachments (default: current)
user = raw_input("Enter your GMail username:")
pwd = getpass.getpass("Enter your password: ")
# connecting to the gmail imap server
m = imaplib.IMAP4_SSL("imap.gmail.com")
m.login(user,pwd)
m.select("[Gmail]/All Mail") # here you a can choose a mail box like INBOX instead
# use m.list() to get all the mailboxes
resp, items = m.search(None, "ALL") # you could filter using the IMAP rules here (check http://www.example-code.com/csharp/imap-search-critera.asp)
items = items[0].split() # getting the mails id
for emailid in items:
resp, data = m.fetch(emailid, "(RFC822)") # fetching the mail, "`(RFC822)`" means "get the whole stuff", but you can ask for headers only, etc
email_body = data[0][1] # getting the mail content
mail = email.message_from_string(email_body) # parsing the mail content to get a mail object
#Check if any attachments at all
if mail.get_content_maintype() != 'multipart':
continue
print "["+mail["From"]+"] :" + mail["Subject"]
# we use walk to create a generator so we can iterate on the parts and forget about the recursive headach
for part in mail.walk():
# multipart are just containers, so we skip them
if part.get_content_maintype() == 'multipart':
continue
# is this part an attachment ?
if part.get('Content-Disposition') is None:
continue
filename = part.get_filename()
counter = 1
# if there is no filename, we create one with a counter to avoid duplicates
if not filename:
filename = 'part-%03d%s' % (counter, 'bin')
counter += 1
att_path = os.path.join(detach_dir, filename)
#Check if its already there
if not os.path.isfile(att_path) :
# finally write the stuff
fp = open(att_path, 'wb')
fp.write(part.get_payload(decode=True))
fp.close()
哇！那是东西。;-) 但是在 Java 中尝试同样的方法，只是为了好玩！
顺便说一句，我在 shell 中对其进行了测试，因此可能仍然存在一些错误。
享受
编辑：
因为邮箱名称可以从一个国家更改为另一个国家，我建议您m.list()先在其中选择一个项目m.select("the mailbox name")以避免此错误：
imaplib.error：命令 SEARCH 在状态 AUTH 中非法，仅在状态 SELECTED 中允许
于 2009-03-13T14:34:44.667 回答
9
我不是 Perl 方面的专家，但我所知道的是 GMail 支持 IMAP 和 POP3，这两种协议是完全标准的并且允许您这样做。
也许这可以帮助您入门。
于 2008-12-08T04:17:37.907 回答
8
#!/usr/bin/env python
"""Save all attachments for given gmail account."""
import os, sys
from libgmail import GmailAccount
ga = GmailAccount("your.account@gmail.com", "pA$$w0Rd_")
ga.login()
# folders: inbox, starred, all, drafts, sent, spam
for thread in ga.getMessagesByFolder('all', allPages=True):
for msg in thread:
sys.stdout.write('.')
if msg.attachments:
print "\n", msg.id, msg.number, msg.subject, msg.sender
for att in msg.attachments:
if att.filename and att.content:
attdir = os.path.join(thread.id, msg.id)
if not os.path.isdir(attdir):
os.makedirs(attdir)
with open(os.path.join(attdir, att.filename), 'wb') as f:
f.write(att.content)
未经测试
- 确保 TOS 允许此类脚本，否则您的帐户将被暂停
- 可能有更好的选择：GMail 离线模式、Thunderbird + ExtractExtensions、GmailFS、Gmail Drive 等。
于 2009-03-13T08:40:25.173 回答
7
获取附件
获取附件有两种方式：
1 -> 通过发送对返回的特定附件的引用get_indv_email
# Creates an array of references to every attachment in your account
my $messages = $gmail->get_messages();
my @attachments;
foreach ( @{ $messages } ) {
my $email = $gmail->get_indv_email( msg => $_ );
if ( defined( $email->{ $_->{ 'id' } }->{ 'attachments' } ) ) {
foreach ( @{ $email->{ $_->{ 'id' } }->{ 'attachments' } } ) {
push( @attachments, $gmail->get_attachment( attachment => $_ ) );
if ( $gmail->error() ) {
print $gmail->error_msg();
}
}
}
}
2 -> 或者通过发送附件 ID 和消息 ID
#retrieve specific attachment
my $msgid = 'F000000000';
my $attachid = '0.1';
my $attach_ref = $gmail->get_attachment( attid => $attachid, msgid => $msgid );
（返回对保存附件数据的标量的引用。）
于 2009-03-13T15:52:00.127 回答
4
在 gmail 中，您可以过滤“has:attachment”，使用它来识别您在测试时应该收到的消息。请注意，这似乎会提供带有附件的消息（显示回形针图标）以及内联附加图像（未显示回形针）。
没有 Gmail API，因此 IMAP 或 POP 是您唯一真正的选择。JavaMail API以及这篇关于使用 Perl 从 IMAP 下载附件的简洁文章可能会提供一些帮助。之前关于 SO 的一些问题也可能有所帮助。
这个PHP 示例也可能有所帮助。不幸的是，据我所知，imap_header 中没有包含附件信息，因此需要下载正文才能看到 X-Attachment-Id 字段。（有人请证明我错了）。
于 2008-12-08T05:10:38.360 回答
4
这个问题已经很老了，当时 Gmail API 不可用。但是现在 Google 提供了 Gmail API 来访问 IMAP。在此处查看 Google 的 Gmail API 。另请参阅pypi 上的 google-api-python-client。
于 2016-05-07T12:35:30.593 回答
3
如果你们中的任何人已经更新到 python 3.3，我从HERE获取 2.7 脚本并将其更新到 3.3。还修复了 gmail 返回信息的方式的一些问题。
# Something in lines of http://stackoverflow.com/questions/348630/how-can-i-download-all-emails-with-attachments-from-gmail
# Make sure you have IMAP enabled in your gmail settings.
# Right now it won't download same file name twice even if their contents are different.
# Gmail as of now returns in bytes but just in case they go back to string this line is left here.
import email
import getpass, imaplib
import os
import sys
import time
detach_dir = '.'
if 'attachments' not in os.listdir(detach_dir):
os.mkdir('attachments')
userName = input('Enter your GMail username:\n')
passwd = getpass.getpass('Enter your password:\n')
try:
imapSession = imaplib.IMAP4_SSL('imap.gmail.com',993)
typ, accountDetails = imapSession.login(userName, passwd)
if typ != 'OK':
print ('Not able to sign in!')
raise
imapSession.select('Inbox')
typ, data = imapSession.search(None, 'ALL')
if typ != 'OK':
print ('Error searching Inbox.')
raise
# Iterating over all emails
for msgId in data[0].split():
typ, messageParts = imapSession.fetch(msgId, '(RFC822)')
if typ != 'OK':
print ('Error fetching mail.')
raise
#print(type(emailBody))
emailBody = messageParts[0][1]
#mail = email.message_from_string(emailBody)
mail = email.message_from_bytes(emailBody)
for part in mail.walk():
#print (part)
if part.get_content_maintype() == 'multipart':
# print part.as_string()
continue
if part.get('Content-Disposition') is None:
# print part.as_string()
continue
fileName = part.get_filename()
if bool(fileName):
filePath = os.path.join(detach_dir, 'attachments', fileName)
if not os.path.isfile(filePath) :
print (fileName)
fp = open(filePath, 'wb')
fp.write(part.get_payload(decode=True))
fp.close()
imapSession.close()
imapSession.logout()
except :
print ('Not able to download all attachments.')
time.sleep(3)
于 2013-08-15T19:02:05.670 回答
1
由于 Gmail 支持标准协议 POP 和 IMAP，任何提供任一协议客户端的平台、工具、应用程序、组件或 API 都应该可以工作。
我建议在 Google 上搜索你最喜欢的语言/平台（例如，“python”），加上“pop”，加上“imap”，也许再加上“开源”，也许再加上“下载”或“评论”，然后看看你得到选择。
有许多免费的应用程序和组件，选择一些看起来值得的，查看评论，然后下载并享受。
于 2008-12-08T05:23:54.700 回答
1
您应该知道您需要 SSL 才能连接到 GMail（对于 POP3 和 IMAP - 这当然也适用于他们的 SMTP 服务器，除了端口 25，但这是另一回事）。
于 2009-01-05T13:07:02.363 回答
1
这是我用Groovy（Java 平台的动态语言）下载银行对账单时写的。
import javax.mail.*
import java.util.Properties
String gmailServer
int gmailPort
def user, password, LIMIT
def inboxFolder, root, StartDate, EndDate
// Downloads all attachments from a gmail mail box as per some criteria
// to a specific folder
// Based on code from
// http://agileice.blogspot.com/2008/10/using-groovy-to-connect-to-gmail.html
// http://stackoverflow.com/questions/155504/download-mail-attachment-with-java
//
// Requires:
// java mail jars in the class path (mail.jar and activation.jar)
// openssl, with gmail certificate added to java keystore (see agileice blog)
//
// further improvement: maybe findAll could be used to filter messages
// subject could be added as another criteria
////////////////////// <CONFIGURATION> //////////////////////
// Maximm number of emails to access in case parameter range is too high
LIMIT = 10000
// gmail credentials
gmailServer = "imap.gmail.com"
gmailPort = 993
user = "gmailuser@gmail.com"
password = "gmailpassword"
// gmail label, or "INBOX" for inbox
inboxFolder = "finance"
// local file system where the attachment files need to be stored
root = "D:\\AttachmentStore"
// date range dd-mm-yyyy
StartDate= "31-12-2009"
EndDate = "1-6-2010"
////////////////////// </CONFIGURATION> //////////////////////
StartDate = Date.parse("dd-MM-yyyy", StartDate)
EndDate = Date.parse("dd-MM-yyyy", EndDate)
Properties props = new Properties();
props.setProperty("mail.store.protocol", "imaps");
props.setProperty("mail.imaps.host", gmailServer);
props.setProperty("mail.imaps.port", gmailPort.toString());
props.setProperty("mail.imaps.partialfetch", "false");
def session = javax.mail.Session.getDefaultInstance(props,null)
def store = session.getStore("imaps")
store.connect(gmailServer, user, password)
int i = 0;
def folder = store.getFolder(inboxFolder)
folder.open(Folder.READ_ONLY)
for(def msg : folder.messages) {
//if (msg.subject?.contains("bank Statement"))
println "[$i] From: ${msg.from} Subject: ${msg.subject} -- Received: ${msg.receivedDate}"
if (msg.receivedDate < StartDate || msg.receivedDate > EndDate) {
println "Ignoring due to date range"
continue
}
if (msg.content instanceof Multipart) {
Multipart mp = (Multipart)msg.content;
for (int j=0; j < mp.count; j++) {
Part part = mp.getBodyPart(j);
println " ---- ${part.fileName} ---- ${part.disposition}"
if (part.disposition?.equalsIgnoreCase(Part.ATTACHMENT)) {
if (part.content) {
def name = msg.receivedDate.format("yyyy_MM_dd") + " " + part.fileName
println "Saving file to $name"
def f = new File(root, name)
//f << part.content
try {
if (!f.exists())
f << part.content
}
catch (Exception e) {
println "*** Error *** $e"
}
}
else {
println "NO Content Found!!"
}
}
}
}
if (i++ > LIMIT)
break;
}
于 2010-11-13T10:32:33.377 回答
1
/*based on http://www.codejava.net/java-ee/javamail/using-javamail-for-searching-e-mail-messages*/
package getMailsWithAtt;
import java.io.File;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.NoSuchProviderException;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.internet.MimeBodyPart;
import javax.mail.search.AndTerm;
import javax.mail.search.SearchTerm;
import javax.mail.search.ReceivedDateTerm;
import javax.mail.search.ComparisonTerm;
public class EmailReader {
private String saveDirectory;
/**
* Sets the directory where attached files will be stored.
*
* @param dir
* absolute path of the directory
*/
public void setSaveDirectory(String dir) {
this.saveDirectory = dir;
}
/**
* Downloads new messages and saves attachments to disk if any.
*
* @param host
* @param port
* @param userName
* @param password
* @throws IOException
*/
public void downloadEmailAttachments(String host, String port,
String userName, String password, Date startDate, Date endDate) {
Properties props = System.getProperties();
props.setProperty("mail.store.protocol", "imaps");
try {
Session session = Session.getDefaultInstance(props, null);
Store store = session.getStore("imaps");
store.connect("imap.gmail.com", userName, password);
// ...
Folder inbox = store.getFolder("INBOX");
inbox.open(Folder.READ_ONLY);
SearchTerm olderThan = new ReceivedDateTerm (ComparisonTerm.LT, startDate);
SearchTerm newerThan = new ReceivedDateTerm (ComparisonTerm.GT, endDate);
SearchTerm andTerm = new AndTerm(olderThan, newerThan);
//Message[] arrayMessages = inbox.getMessages(); <--get all messages
Message[] arrayMessages = inbox.search(andTerm);
for (int i = arrayMessages.length; i > 0; i--) { //from newer to older
Message msg = arrayMessages[i-1];
Address[] fromAddress = msg.getFrom();
String from = fromAddress[0].toString();
String subject = msg.getSubject();
String sentDate = msg.getSentDate().toString();
String receivedDate = msg.getReceivedDate().toString();
String contentType = msg.getContentType();
String messageContent = "";
// store attachment file name, separated by comma
String attachFiles = "";
if (contentType.contains("multipart")) {
// content may contain attachments
Multipart multiPart = (Multipart) msg.getContent();
int numberOfParts = multiPart.getCount();
for (int partCount = 0; partCount < numberOfParts; partCount++) {
MimeBodyPart part = (MimeBodyPart) multiPart
.getBodyPart(partCount);
if (Part.ATTACHMENT.equalsIgnoreCase(part
.getDisposition())) {
// this part is attachment
String fileName = part.getFileName();
attachFiles += fileName + ", ";
part.saveFile(saveDirectory + File.separator + fileName);
} else {
// this part may be the message content
messageContent = part.getContent().toString();
}
}
if (attachFiles.length() > 1) {
attachFiles = attachFiles.substring(0,
attachFiles.length() - 2);
}
} else if (contentType.contains("text/plain")
|| contentType.contains("text/html")) {
Object content = msg.getContent();
if (content != null) {
messageContent = content.toString();
}
}
// print out details of each message
System.out.println("Message #" + (i + 1) + ":");
System.out.println("\t From: " + from);
System.out.println("\t Subject: " + subject);
System.out.println("\t Received: " + sentDate);
System.out.println("\t Message: " + messageContent);
System.out.println("\t Attachments: " + attachFiles);
}
// disconnect
inbox.close(false);
store.close();
} catch (NoSuchProviderException e) {
e.printStackTrace();
System.exit(1);
} catch (MessagingException e) {
e.printStackTrace();
System.exit(2);
} catch (IOException ex) {
ex.printStackTrace();
}
}
/**
* Runs this program with Gmail POP3 server
* @throws ParseException
*/
public static void main(String[] args) throws ParseException {
String host = "pop.gmail.com";
String port = "995";
String userName = "user@gmail.com";
String password = "pass";
Date startDate = new SimpleDateFormat("yyyy-MM-dd").parse("2014-06-30");
Date endDate = new SimpleDateFormat("yyyy-MM-dd").parse("2014-06-01");
String saveDirectory = "C:\\Temp";
EmailReader receiver = new EmailReader();
receiver.setSaveDirectory(saveDirectory);
receiver.downloadEmailAttachments(host, port, userName, password,startDate,endDate);
}
}
Maven依赖：
<dependency>
<groupId>com.sun.mail</groupId>
<artifactId>javax.mail</artifactId>
<version>1.5.1</version>
</dependency>
于 2014-09-24T05:48:52.963 回答
0
您是否查看过维基百科上的GMail 3rd 方插件？
特别是，PhpGmailDrive是一个开源插件，您可以按原样使用它，或者学习灵感？
于 2009-03-13T03:52:27.720 回答
0
对于 Java，您会发现G4J 很有用。它是一组通过 Java 与 Google Mail 通信的 API（主页上的截图是一个围绕此构建的演示电子邮件客户端）
于 2009-03-13T11:56:17.370 回答