我使用 JavaMail API 发送邮件。最初，我在发送邮件时使用以下代码，它工作正常，我可以成功接收邮件。但是，有一个问题，正文消息存储在 txt 文件中，而不是在消息字段中。
邮件发送器类：
public class MailSender extends Authenticator {
private String user;
private String password;
private String [] to;
private String from;
private String port;
private String sport;
private String host;
private String subject;
private String body;
private boolean auth;
private boolean debuggable;
private Multipart multi;
public MailSender(){
host = "me.mysmtp.com";
port = "25";
sport = "25";
user = "";
password = "";
from = "";
subject = "";
body = "";
debuggable = true;
auth = true;
multi = new MimeMultipart();
// There is something wrong with MailCap, javamail can not find a handler for the multipart/mixed part, so this bit needs to be added.
MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap();
mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");
mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");
mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");
mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");
CommandMap.setDefaultCommandMap(mc);
}
public MailSender(String user, String password){
this();
this.user = user;
this.password = password;
}
public boolean send() throws Exception {
Properties props = setProperties();
try{
Session session = Session.getInstance(props, this);
session.setDebug(true);
MimeMessage msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(from));
InternetAddress[] addressTo = new InternetAddress[to.length];
for(int i=0; i<to.length; i++){
addressTo[i] = new InternetAddress(to[i]);
}
msg.setRecipients(MimeMessage.RecipientType.TO, addressTo);
msg.setSubject(subject);
msg.setSentDate(new Date());
BodyPart messageBodyPart = new MimeBodyPart();
messageBodyPart.setText(body);
multi.addBodyPart(messageBodyPart);
msg.setContent(multi);
Transport transport = session.getTransport("smtp");
transport.connect(host, 25, user, password);
transport.sendMessage(msg, msg.getAllRecipients());
transport.close();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
public void addAttachment(String filename) throws Exception {
BodyPart messageBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(filename);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName("record.csv");
multi.addBodyPart(messageBodyPart);
}
@Override
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, password);
}
private Properties setProperties() {
Properties props = new Properties();
props.put("mail.smtp.host", host);
if(debuggable) {
props.put("mail.debug", "true");
}
if(auth) {
props.put("mail.smtp.auth", "true");
}
props.put("mail.smtp.ssl.enable", "false");
props.put("mail.smtp.port", port);
props.put("mail.smtp.socketFactory.port", sport);
props.setProperty("mail.smtp.ssl.enable", "false");
props.setProperty("mail.smtp.ssl.socketFactory.fallback", "false");
return props;
}
public void setTo(String[] toAddress) {
this.to = toAddress;
}
public void setFrom(String fromAddress) {
this.from = fromAddress;
}
public void setSubject(String subject) {
this.subject = subject;
}
public void setBody(String body) {
this.body = body;
}
}
屏幕截图：
所以我改变了多部分对象中身体部分的顺序。但是，我修改代码后，虽然应用程序仍然回复它已成功发送邮件，但我无法收到邮件。
这是日志中的消息：
成功一：
08-16 11:44:13.371: I/System.out(25774): MAIL FROM:<me@mysmtp.com>
08-16 11:44:13.379: I/System.out(25774): 250 OK
08-16 11:44:13.379: I/System.out(25774): RCPT TO:<you@mysmtp.com>
08-16 11:44:13.418: I/System.out(25774): 250 Accepted
08-16 11:44:13.418: I/System.out(25774): RCPT TO:<admin@mysmtp.com>
08-16 11:44:13.434: I/System.out(25774): 250 Accepted
08-16 11:44:13.434: I/System.out(25774): DEBUG SMTP: Verified Addresses
08-16 11:44:13.434: I/System.out(25774): DEBUG SMTP: you@mysmtp.com
08-16 11:44:13.434: I/System.out(25774): DEBUG SMTP: admin@mysmtp.com
08-16 11:44:13.434: I/System.out(25774): DATA
08-16 11:44:13.442: I/System.out(25774): 354 Enter message, ending with "." on a line by itself
08-16 11:44:13.536: I/System.out(25774): Date: Thu, 16 Aug 2012 11:44:10 +0800 (HKT)
08-16 11:44:13.536: I/System.out(25774): From: me@mysmtp.com
08-16 11:44:13.536: I/System.out(25774): To: you@mysmtp.com, admin@mysmtp.com
08-16 11:44:13.536: I/System.out(25774): Message-ID: <1099034872.1.1345088653528.JavaMail.javamailuser@localhost>
08-16 11:44:13.536: I/System.out(25774): Subject: Record cannot be inserted!
08-16 11:44:13.536: I/System.out(25774): MIME-Version: 1.0
08-16 11:44:13.536: I/System.out(25774): Content-Type: multipart/mixed;
08-16 11:44:13.536: I/System.out(25774): boundary="----=_Part_0_1098872744.1345088650701"
08-16 11:44:13.536: I/System.out(25774):
08-16 11:44:13.536: I/System.out(25774): ------=_Part_0_1098872744.1345088650701
08-16 11:44:13.536: I/System.out(25774): Content-Type: application/octet-stream; name=record.csv
08-16 11:44:13.536: I/System.out(25774): Content-Transfer-Encoding: 7bit
08-16 11:44:13.536: I/System.out(25774): Content-Disposition: attachment; filename=record.csv
08-16 11:44:13.536: I/System.out(25774):
08-16 11:44:13.536: I/System.out(25774): ABD,HK,A,2012/08/16 10:02, ,
08-16 11:44:13.536: I/System.out(25774):
08-16 11:44:13.536: I/System.out(25774): ------=_Part_0_1098872744.1345088650701
08-16 11:44:13.536: I/System.out(25774): Content-Type: text/plain; charset=us-ascii
08-16 11:44:13.536: I/System.out(25774): Content-Transfer-Encoding: 7bit
08-16 11:44:13.536: I/System.out(25774):
08-16 11:44:13.536: I/System.out(25774): Please insert manually!
08-16 11:44:13.536: I/System.out(25774): ------=_Part_0_1098872744.1345088650701--
08-16 11:44:13.536: I/System.out(25774): .
08-16 11:44:13.551: I/System.out(25774): 250 OK id=1T1r0E-0001LQ-Al
08-16 11:44:13.551: I/System.out(25774): QUIT
08-16 11:44:13.567: I/System.out(25774): 221 web.mysmtp.com closing connection
失败之一：
08-16 11:42:59.129: I/System.out(25322): MAIL FROM:<me@mysmtp.com>
08-16 11:42:59.137: I/System.out(25322): 250 OK
08-16 11:42:59.137: I/System.out(25322): RCPT TO:<you@mysmtp.com>
08-16 11:42:59.192: I/System.out(25322): 250 Accepted
08-16 11:42:59.192: I/System.out(25322): RCPT TO:<admin@mysmtp.com>
08-16 11:42:59.200: I/System.out(25322): 250 Accepted
08-16 11:42:59.200: I/System.out(25322): DEBUG SMTP: Verified Addresses
08-16 11:42:59.200: I/System.out(25322): DEBUG SMTP: you@mysmtp.com
08-16 11:42:59.200: I/System.out(25322): DEBUG SMTP: admin@mysmtp.com
08-16 11:42:59.200: I/System.out(25322): DATA
08-16 11:42:59.207: I/System.out(25322): 354 Enter message, ending with "." on a line by itself
08-16 11:42:59.270: I/System.out(25322): Date: Thu, 16 Aug 2012 11:42:56 +0800 (HKT)
08-16 11:42:59.270: I/System.out(25322): From: me@mysmtp.com
08-16 11:42:59.270: I/System.out(25322): To: you@mysmtp.com, admin@mysmtp.com
08-16 11:42:59.270: I/System.out(25322): Message-ID: <1099222896.1.1345088579269.JavaMail.javamailuser@localhost>
08-16 11:42:59.270: I/System.out(25322): Subject: Record cannot be inserted!
08-16 11:42:59.270: I/System.out(25322): MIME-Version: 1.0
08-16 11:42:59.270: I/System.out(25322): Content-Type: multipart/mixed;
08-16 11:42:59.270: I/System.out(25322): boundary="----=_Part_0_1098885208.1345088576714"
08-16 11:42:59.270: I/System.out(25322):
08-16 11:42:59.270: I/System.out(25322): ------=_Part_0_1098885208.1345088576714
08-16 11:42:59.270: I/System.out(25322): Content-Type: text/plain; charset=us-ascii
08-16 11:42:59.270: I/System.out(25322): Content-Transfer-Encoding: 7bit
08-16 11:42:59.270: I/System.out(25322):
08-16 11:42:59.270: I/System.out(25322): Please insert manually!
08-16 11:42:59.278: I/System.out(25322): ------=_Part_0_1098885208.1345088576714
08-16 11:42:59.278: I/System.out(25322): Content-Type: application/octet-stream; name=record.csv
08-16 11:42:59.278: I/System.out(25322): Content-Transfer-Encoding: 7bit
08-16 11:42:59.278: I/System.out(25322): Content-Disposition: attachment; filename=record.csv
08-16 11:42:59.278: I/System.out(25322):
08-16 11:42:59.278: I/System.out(25322): ABD,HK,A,2012/08/16 10:02, ,
08-16 11:42:59.278: I/System.out(25322):
08-16 11:42:59.278: I/System.out(25322): ------=_Part_0_1098885208.1345088576714--
08-16 11:42:59.278: I/System.out(25322): .
08-16 11:42:59.325: I/System.out(25322): 250 OK id=1T1qz2-0001Iq-3T
08-16 11:42:59.325: I/System.out(25322): QUIT
08-16 11:42:59.332: I/System.out(25322): 221 web.mysmtp.com closing connection
我不知道为什么第二个不能成功交付。谁能帮我一把？