Java邮件发送详解（可发送附件）
发送前需要引用
mail-1.4.5.jar，资源下载参见下载链接。
一、邮件内容实体类
package mail;
import java.security.GeneralSecurityException;
import java.util.Properties;
import com.sun.mail.util.MailSSLSocketFactory;
public class MailInfo {
/** 发送邮件的服务器的IP */
private String mailHost;
/** 发送邮件的服务器的端口 */
private String mailPort = "465";
/** 发送邮件的用户名（邮箱全名称） */
private String username;
/** 发送邮件的密码 */
private String password;
/** 错误信息发送地址（多个邮件地址以";"分隔） */
private String errorTo;
/** 错误信息抄送地址（多个邮件地址以";"分隔） */
private String errorCc;
/** 警告信息发送地址（多个邮件地址以";"分隔） */
private String warningTo;
/** 警告信息抄送地址（多个邮件地址以";"分隔） */
private String warningCc;
/** 通知信息发送地址（多个邮件地址以";"分隔） */
private String notifyTo;
/** 通知信息抄送地址（多个邮件地址以";"分隔） */
private String notifyCc;
/** 邮件主题 */
private String subject;
/** 邮件内容 */
private String content;
/** 邮件附件的文件名 */
private String[] attachFileNames;
/**
* 获取邮件参数
*
* @return
* @throws GeneralSecurityException
*/
public Properties getProperties() throws GeneralSecurityException {
Properties props = new Properties();
props.put("mail.smtp.host", getMailHost());
props.put("mail.smtp.port", getMailPort());
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
MailSSLSocketFactory sslSF = new MailSSLSocketFactory();
sslSF.setTrustAllHosts(true);
props.put("mail.smtp.ssl.enable", "true");
props.put("mail.smtp.ssl.socketFactory", sslSF);
props.put("mail.transport.protocol", "smtp");
props.put("mail.user", getUsername());
props.put("mail.password", getPassword());
return props;
}
/**
* @return the mailHost
*/
public String getMailHost() {
return mailHost;
}
/**
* @param mailHost
*
*/
public void setMailHost(String mailHost) {
this.mailHost = mailHost;
}
/**
* @return the mailPort
*/
public String getMailPort() {
return mailPort;
}
/**
* @param mailPort
*
*/
public void setMailPort(String mailPort) {
this.mailPort = mailPort;
}
/**
* @return the username
*/
public String getUsername() {
return username;
}
/**
* @param username
*
*/
public void setUsername(String username) {
this.username = username;
}
/**
* @return the password
*/
public String getPassword() {
return password;
}
/**
* @param password
*
*/
public void setPassword(String password) {
this.password = password;
}
/**
* @return the errorTo
*/
public String getErrorTo() {
return errorTo;
}
/**
* @param errorTo
*
*/
public void setErrorTo(String errorTo) {
this.errorTo = errorTo;
}
/**
* @return the errorCc
*/
public String getErrorCc() {
return errorCc;
}
/**
* @param errorCc
*
*/
public void setErrorCc(String errorCc) {
this.errorCc = errorCc;
}
/**
* @return the warningTo
*/
public String getWarningTo() {
return warningTo;
}
/**
* @param warningTo
*
*/
public void setWarningTo(String warningTo) {
this.warningTo = warningTo;
}
/**
* @return the warningCc
*/
public String getWarningCc() {
return warningCc;
}
/**
* @param warningCc
*
*/
public void setWarningCc(String warningCc) {
this.warningCc = warningCc;
}
/**
* @return the notifyTo
*/
public String getNotifyTo() {
return notifyTo;
}
/**
* @param notifyTo
*
*/
public void setNotifyTo(String notifyTo) {
this.notifyTo = notifyTo;
}
/**
* @return the notifyCc
*/
public String getNotifyCc() {
return notifyCc;
}
/**
* @param notifyCc
*
*/
public void setNotifyCc(String notifyCc) {
this.notifyCc = notifyCc;
}
/**
* @return Returns the subject.
*/
public String getSubject() {
return subject;
}
/**
* @param subject
*
*/
public void setSubject(String subject) {
this.subject = subject;
}
/**
* @return Returns the content.
*/
public String getContent() {
return content;
}
/**
* @param content
*
*/
public void setContent(String content) {
this.content = content;
}
/**
* @return Returns the attachFileNames.
*/
public String[] getAttachFileNames() {
return attachFileNames;
}
/**
* @param attachFileNames
*
*/
public void setAttachFileNames(String[] attachFileNames) {
this.attachFileNames = attachFileNames;
}
}
二、发送邮件时的身份验证器
package mail;
import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;
public class MailAuthenticator extends Authenticator {
/** 用户账号 */
private String userName = null;
/** 用户口令 */
private String password = null;
/**
* @param userName
* @param password
*/
public MailAuthenticator(String userName, String password) {
this.userName = userName;
this.password = password;
}
/**
* 身份验证
* @return
*/
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(userName, password);
}
}
三、邮件发送器
package mail;
import java.util.Calendar;
import java.util.List;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
public class MailSender {
private static MailSender sender = null;
public static MailSender getInstance() {
if(sender == null){
sender = new MailSender();
}
return sender;
}
/**
* 以文本格式发送邮件
*
* @param mailInfo
* 邮件信息
* @param mailType
* 邮件类型 1-error；2-warning；3-notify；
* @return
* @throws Exception
*/
public boolean sendTextMail(MailInfo mailInfo, int mailType) throws Exception {
// 需要身份认证，创建一个密码验证器
MailAuthenticator authenticator = new MailAuthenticator(mailInfo.getUsername(), mailInfo.getPassword());
Properties prop = mailInfo.getProperties();
// 根据邮件会话属性和密码验证器构造一个发送邮件的session
Session sendMailSession = Session.getDefaultInstance(prop, authenticator);
try {
// 根据session创建一个邮件消息
Message mailMessage = new MimeMessage(sendMailSession);
// 创建邮件发送者地址
Address from = new InternetAddress(mailInfo.getUsername());
// 设置邮件消息的发送者
mailMessage.setFrom(from);
// 创建邮件的接收者地址 to：发送；cc：抄送
Address[][] maillToArr = getMailToAddress(mailInfo, mailType);
// 设置邮件消息的接收者，发送，抄送
if (maillToArr != null && maillToArr[0] != null && maillToArr[0].length > 0) {
mailMessage.setRecipients(Message.RecipientType.TO, maillToArr[0]);
}
if (maillToArr != null && maillToArr[1] != null && maillToArr[1].length > 0) {
mailMessage.setRecipients(Message.RecipientType.CC, maillToArr[1]);
}
// 设置邮件消息的主题
mailMessage.setSubject(mailInfo.getSubject());
// 设置邮件消息发送的时间
mailMessage.setSentDate(Calendar.getInstance().getTime());
// 设置邮件消息的主要内容
mailMessage.setText(mailInfo.getContent());
// 发送邮件
Transport.send(mailMessage);
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
/**
* 以HTML格式发送邮件
*
* @param mailInfo
* 邮件信息
* @param mailType
* 邮件类型 1-error；2-warning；（默认）3-notify；
* @return
* @throws Exception
*/
public boolean sendHtmlMail(MailInfo mailInfo, int mailType) throws Exception {
// 需要身份认证，创建一个密码验证器
MailAuthenticator authenticator = new MailAuthenticator(mailInfo.getUsername(), mailInfo.getPassword());
Properties prop = mailInfo.getProperties();
// 根据邮件会话属性和密码验证器构造一个发送邮件的session
Session sendMailSession = Session.getDefaultInstance(prop, authenticator);
try {
// 根据session创建一个邮件消息
Message mailMessage = new MimeMessage(sendMailSession);
// 创建邮件发送者地址
Address from = new InternetAddress(mailInfo.getUsername());
// 设置邮件消息的发送者
mailMessage.setFrom(from);
// 创建邮件的接收者地址 to：发送；cc：抄送
Address[][] maillToArr = getMailToAddress(mailInfo, mailType);
// 设置邮件消息的接收者，发送，抄送
if (maillToArr != null && maillToArr[0] != null && maillToArr[0].length > 0) {
mailMessage.setRecipients(Message.RecipientType.TO, maillToArr[0]);
}
if (maillToArr != null && maillToArr[1] != null && maillToArr[1].length > 0) {
mailMessage.setRecipients(Message.RecipientType.CC, maillToArr[1]);
}
// 设置邮件消息的主题
mailMessage.setSubject(mailInfo.getSubject());
// 设置邮件消息发送的时间
mailMessage.setSentDate(Calendar.getInstance().getTime());
// MimeMultipart类是一个容器类，包含MimeBodyPart类型的对象
Multipart multiPart = new MimeMultipart();
// 创建一个包含HTML内容的MimeBodyPart
BodyPart bodyPart = new MimeBodyPart();
// 设置html邮件消息内容
bodyPart.setContent(mailInfo.getContent(), "text/html; charset=utf-8");
multiPart.addBodyPart(bodyPart);
//添加附件
if(mailInfo.getAttachFileNames().length != 0){
for(String attachFile : mailInfo.getAttachFileNames()){
bodyPart=new MimeBodyPart();
FileDataSource fds=new FileDataSource(attachFile); //得到数据源
bodyPart.setDataHandler(new DataHandler(fds)); //得到附件本身并放入BodyPart
bodyPart.setFileName(MimeUtility.encodeText(fds.getName())); //得到文件名并编码（防止中文文件名乱码）同样放入BodyPart
multiPart.addBodyPart(bodyPart);
}
}
// 设置邮件消息的主要内容
mailMessage.setContent(multiPart);
// 发送邮件
Transport.send(mailMessage);
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
/**
* 创建发送邮件列表地址对象
*
* @param mailInfo
* 邮件信息
* @param mailType
* 邮件类型 1-error；2-warning；（默认）3-notify；
* @return Address[0]：发送地址数组；Address[1]：抄送地址数组
*/
private Address[][] getMailToAddress(MailInfo mailInfo, int mailType) throws AddressException {
Address[] toAdds = null;
Address[] ccAdds = null;
String[] toMails = mailInfo.getNotifyTo().split(";");
toAdds = new InternetAddress[toMails.length];
for (int index = 0; index < toMails.length; index++) {
toAdds[index] = new InternetAddress(toMails[index]);
}
String[] ccMails = mailInfo.getNotifyCc().split(";");
ccAdds = new InternetAddress[ccMails.length];
for (int index = 0; index < ccMails.length; index++) {
ccAdds[index] = new InternetAddress(ccMails[index]);
}
Address[][] result = { toAdds, ccAdds };
return result;
}
/**
* 构建MailInfo对象
* @return
*/
public MailInfo getMailInfo() {
MailInfo info = new MailInfo();
info.setMailHost("邮件提供商的stmp服务器");
info.setMailPort("465");
info.setUsername("邮件发送人邮箱");
info.setPassword("发送人邮箱密码");
info.setNotifyTo("邮件接收人");
info.setNotifyCc("邮件抄送人");
info.setSubject("java send mail test");
info.setContent("中文编码测试，看是不是乱码");
info.setAttachFileNames(new String[]{"附件一", "附件二"});//添加附件
return info;
}
}
四、测试程序
package mail;
public class MailTest {
public static void main(String[] args) throws Exception {
MailSender mailSender = MailSender.getInstance();
MailInfo mailInfo = mailSender.getMailInfo();
mailSender.sendHtmlMail(mailInfo, 3);
}
}