使用方法
MailLet mail = new MailLet();
mail.setSmtpServer("yyyyyyyyyyyyyyyyy");
mail.setPort(80);
mail.setIfAuth(true);
mail.setFrom("xxxxxxx");
mail.setDisplayName("yyyyyyyyyyyyyyy");
mail.setUserName("xxxxxxxxxx");
mail.setPassword("xxxxxxxxxxxxxxxxxxxx");
mail.setTo(mailTo);
mail.setSubject(template.getSubject());
mail.setContent(template.getContent());
mail.setContentType("text/plain");
mail.setCharset(CHARSET);
mail.send();package mail;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Properties;
import java.util.Vector;
import javax.activation.FileDataSource;
import javax.mail.Address;
import javax.mail.AuthenticationFailedException;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
public class MailLet {
// 定义发件人、收件人、SMTP服务器、用户名、密码、主题、内容等
private String displayName;
private String to;
private String from;
private String smtpServer;
private String username;
private String password;
private String subject;
private String content;
private boolean ifAuth; // 服务器是否要身份认证
private String filename = "";
private Vector file = new Vector(); // 用于保存发送附件的文件名的集合
private String contentType = "text/html";
private String charset = "utf-8";
public String getContentType() {
return contentType;
}
public void setContentType(String contentType) {
this.contentType = contentType;
}
public String getCharset() {
return charset;
}
public void setCharset(String charset) {
this.charset = charset;
}
/**
* 设置SMTP服务器地址
*/
public void setSmtpServer(String smtpServer) {
this.smtpServer = smtpServer;
}
/**
* 设置发件人的地址
*/
public void setFrom(String from) {
this.from = from;
}
/**
* 设置显示的名称
*/
public void setDisplayName(String displayName) {
this.displayName = displayName;
}
/**
* 设置服务器是否需要身份认证
*/
public void setIfAuth(boolean ifAuth) {
this.ifAuth = ifAuth;
}
/**
* 设置E-mail用户名
*/
public void setUserName(String username) {
this.username = username;
}
/**
* 设置E-mail密码
*/
public void setPassword(String password) {
this.password = password;
}
/**
* 设置接收者
*/
public void setTo(String to) {
this.to = to;
}
/**
* 设置主题
*/
public void setSubject(String subject) {
this.subject = subject;
}
/**
* 设置主体内容
*/
public void setContent(String content) {
this.content = content;
}
public MailLet() {
}
public MailLet(String smtpServer, String username, String password, String from) {
this.setSmtpServer(smtpServer);
this.from = from;
}
/**
* 初始化SMTP服务器地址、发送者E-mail地址、用户名、密码、接收者、主题、内容
*/
public MailLet(String smtpServer, String from, String displayName, String username,
String password, String to, String subject, String content) {
this.smtpServer = smtpServer;
this.from = from;
this.displayName = displayName;
this.ifAuth = true;
this.username = username;
this.password = password;
this.to = to;
this.subject = subject;
this.content = content;
}
/**
* 初始化SMTP服务器地址、发送者E-mail地址、接收者、主题、内容
*/
public MailLet(String smtpServer, String from, String displayName, String to, String subject,
String content) {
this.smtpServer = smtpServer;
this.from = from;
this.displayName = displayName;
this.ifAuth = false;
this.to = to;
this.subject = subject;
this.content = content;
}
private int port = 25;
public int getPort() {
return port;
}
public void setPort(int port) {
this.port = port;
}
/**
* 发送邮件
*/
public boolean send() {
HashMap<String, String> map = new HashMap<String, String>();
map.put("state", "success");
String message = "邮件发送成功！";
Session session = null;
Properties props = System.getProperties();
props.put("mail.smtp.host", smtpServer);
props.put("mail.smtp.port", port);
try {
if (ifAuth) { // 服务器需要身份认证
props.put("mail.smtp.auth", "true");
SmtpAuth smtpAuth = new SmtpAuth(username, password);
session = Session.getInstance(props, smtpAuth);
} else {
props.put("mail.smtp.auth", "false");
session = Session.getDefaultInstance(props, null);
}
session.setDebug(false);
Transport trans = null;
Message msg = new MimeMessage(session);
try {
Address from_address = new InternetAddress(from, displayName);
msg.setFrom(from_address);
} catch (java.io.UnsupportedEncodingException e) {
e.printStackTrace();
}
InternetAddress[] address = { new InternetAddress(to) };
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject(subject);
Multipart mp = new MimeMultipart();
MimeBodyPart mbp = new MimeBodyPart();
mbp.setContent(content.toString(), getContentType() + ";charset=" + getCharset());
mp.addBodyPart(mbp);
if (!file.isEmpty()) {// 有附件
Enumeration efile = file.elements();
while (efile.hasMoreElements()) {
mbp = new MimeBodyPart();
filename = efile.nextElement().toString(); // 选择出每一个附件名
FileDataSource fds = new FileDataSource(filename); // 得到数据源
// mbp.setDataHandler(new DataHandler(fds)); //得到附件本身并至入BodyPart
mbp.setContent("12121212", "text/html");
mbp.setFileName(MimeUtility.encodeText(fds.getName(), getCharset(),"B"))); // 得到文件名同样至入BodyPart
mp.addBodyPart(mbp);
}
file.removeAllElements();
}
msg.setContent(mp); // Multipart加入到信件
msg.setSentDate(new Date()); // 设置信件头的发送日期
// 发送信件
msg.saveChanges();
trans = session.getTransport("smtp");
trans.connect(smtpServer, username, password);
trans.sendMessage(msg, msg.getAllRecipients());
trans.close();
} catch (AuthenticationFailedException e) {
map.put("state", "failed");
message = "邮件发送失败！错误原因：\n" + "身份验证错误!";
e.printStackTrace();
return false;
} catch (MessagingException e) {
message = "邮件发送失败！错误原因：\n" + e.getMessage();
map.put("state", "failed");
e.printStackTrace();
Exception ex = null;
if ((ex = e.getNextException()) != null) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return false;
}catch(Exception ex) {
ex.printStackTrace();
return false;
}
// System.out.println("\n提示信息:"+message);
map.put("message", message);
return true;
}
}package mail;
public class SmtpAuth extends javax.mail.Authenticator {
private String username,password;
public SmtpAuth(String username,String password){
this.username = username;
this.password = password;
}
protected javax.mail.PasswordAuthentication getPasswordAuthentication() {
return new javax.mail.PasswordAuthentication(username,password);
}
} 
