一.导入jar包:
将mail.jar和activation.jar导入到项目中(eclipse中:点击项目名,鼠标右键-->Build Path-->Configure Build Path-->Libraries-->Add External JARs)
注:以上是针对JavaSE的环境,如果是JavaEE环境则不需要,j2ee.jar中包含了上述两个依赖包,可以直接使用。
二.邮件发送关键代码
(1)新建Properties属性对象:
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Properties properties =
new
Properties();
properties.put(
"mail.smtp.host"
, smtpServer);
properties.put(
"mail.smtp.auth"
,
"true"
);
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(2)获取Session会话:
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Session session = Session.getInstance(properties);
//session.setDebug(true);
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(3)创建Message消息对象以及相关配置:
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MimeMessage message =
new
MimeMessage(session);
try
{
//发件人
Address address =
new
InternetAddress(from);
message.setFrom(address);
//收件人
for
(String toAd : to){
Address toAddress =
new
InternetAddress(toAd);
message.setRecipient(MimeMessage.RecipientType.TO, toAddress);
//设置收件人,并设置其接收类型为TO
/**
* TO:代表有健的主要接收者。
* CC:代表有健的抄送接收者。
* BCC:代表邮件的暗送接收者。
* */
}
//主题
message.setSubject(changeEncode(subject));
//时间
message.setSentDate(
new
Date());
Multipart multipart =
new
MimeMultipart();
//添加文本
BodyPart text =
new
MimeBodyPart();
text.setText(content);
multipart.addBodyPart(text);
//添加附件
for
(String fileName : attachmentNames){
BodyPart adjunct =
new
MimeBodyPart();
FileDataSource fileDataSource =
new
FileDataSource(fileName);
adjunct.setDataHandler(
new
DataHandler(fileDataSource));
adjunct.setFileName(changeEncode(fileDataSource.getName()));
multipart.addBodyPart(adjunct);
}
//清空收件人集合,附件集合
to.clear();
attachmentNames.clear();
message.setContent(multipart);
message.saveChanges();
}
catch
(Exception e) {
e.printStackTrace();
return
false
;
}
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注:1.这里的收件人to是一个String集合,以实现群发目的
2.里面有返回值是因为我把发送邮件的代码放在了public boolean sendMail(){}中,通过返回值判断是否已发送成功。下面我会把完整代码放在附件中供大家参考
(4)用Session会话得到Transport对象以及发送邮件
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try
{
Transport transport = session.getTransport(
"smtp"
);
//用SMTP服务器地址以及用户名和密码连接SMTP服务器
transport.connect(smtpServer,username,password);
//发送邮件
transport.sendMessage(message, message.getAllRecipients());
transport.close();
}
catch
(Exception e) {
e.printStackTrace();
return
false
;
}
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三.测试代码
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public
static
void
main(String[] args) {
SendMail sendMail =
new
SendMail();
sendMail.setSmtpServer(
"smtp.qq.com"
);
sendMail.setUsername(
"youname@qq.com"
);
sendMail.setPassword(
"youpassword"
);
sendMail.setFrom(
"123456@qq.com"
);
sendMail.addTo(
"654321@qq.com"
);
// sendMail.addTo("123456789@qq.com");
sendMail.setSubject(
"邮件标题测试"
);
sendMail.setContent(
"Hi,JavaMail.\n你好"
);
// sendMail.addAttachmentNames("C:\\Users\\Administrator\\Desktop\\JavaMail
使用参考.txt");
sendMail.addAttachmentNames(
"C:/Users/Administrator/Desktop/测试.txt"
);
// sendMail.addAttachmentNames("C:/Users/Administrator/Desktop/加密与解
密.pdf");
if
(sendMail.sendMail()){
System.out.println(
"邮件发送成功"
);
}
}
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本文转自 pangfc 51CTO博客,原文链接:http://blog.51cto.com/983836259/1662943,如需转载请自行联系原作者