java 发送邮件

//认证
public class Authentication extends Authenticator{
String username = null;
String password = null;

public Authentication(){

}
public Authentication(String username, String password) {
this.username = username;
this.password = password;
}
protected PasswordAuthentication getPasswordAuthentication(){
PasswordAuthentication pa = new PasswordAuthentication(username, password);
return pa;
}
}
//发送方式  html/text
public class MailSender  {
public boolean sendTextMail(SendMail mailInfo) {
// 判断是否身份认证
Authentication authenticator = null;
Properties pro = mailInfo.getProperties();
if (mailInfo.isValidate()) {
// 如果身份认证，则创建密码验证
authenticator = new Authentication(mailInfo.getUserName(), mailInfo.getPassword());
}
// 根据邮件会话属和密码验证器构发邮件的session
Session sendMailSession = Session.getDefaultInstance(pro,authenticator);
try {
Message mailMessage = new MimeMessage(sendMailSession);
Address from = new InternetAddress(mailInfo.getFromAddress());
mailMessage.setFrom(from);
Address to = new InternetAddress(mailInfo.getToAddress());
mailMessage.setRecipient(Message.RecipientType.TO,to);
mailMessage.setSubject(mailInfo.getSubject());
mailMessage.setSentDate(new Date());
String mailContent = mailInfo.getContent();
mailMessage.setText(mailContent);
Transport.send(mailMessage);
return true;
} catch (MessagingException ex) {
ex.printStackTrace();
}
return false;
}
public boolean sendHtmlMail(SendMail mailInfo){
// 判断是否需要身份认证
Authentication authenticator = null;
Properties pro = mailInfo.getProperties();
if (mailInfo.isValidate()) {
// 如果需要身份认证，则创建一个密码验证器
authenticator = new Authentication(mailInfo.getUserName(), mailInfo.getPassword());
}
// 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(pro,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.getFromAddress());
// 设置邮件消息的发送者
mailMessage.setFrom(from);
// 创建邮件的接收者地址，并设置到邮件消息中
Address to = new InternetAddress(mailInfo.getToAddress());
mailMessage.setRecipient(Message.RecipientType.TO,to);
mailMessage.setSubject(mailInfo.getSubject());
mailMessage.setSentDate(new Date());
Multipart mainPart = new MimeMultipart();
BodyPart html = new MimeBodyPart();
html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");
mainPart.addBodyPart(html);
mailMessage.setContent(mainPart);
Transport.send(mailMessage);
return true;
} catch (MessagingException ex) {
ex.printStackTrace();
}
return false;
}
}
//帐号密码
public class SendMail {
private String mailServerHost = "";
private String mailServerPort = "";
private String fromAddress = "";
private String toAddress;
private String userName = "";
private String password = "";
private boolean validate = false
4000
;
private String subject;
private String content;
private String[] attachFileNames;

public Properties getProperties(){
Properties p = new Properties();
p.put("mail.smtp.host", this.mailServerHost);
p.put("mail.smtp.port", this.mailServerPort);
p.put("mail.smtp.auth", "true");
p.put("mail.smtp.protocol", "SMTP");
return p;
}
public String getMailServerHost() {
return mailServerHost;
}
public void setMailServerHost(String mailServerHost) {
this.mailServerHost = mailServerHost;
}
public String getMailServerPort() {
return mailServerPort;
}
public void setMailServerPort(String mailServerPort) {
this.mailServerPort = mailServerPort;
}
public boolean isValidate() {
return validate;
}
public void setValidate(boolean validate) {
this.validate = validate;
}
public String[] getAttachFileNames() {
return attachFileNames;
}
public void setAttachFileNames(String[] fileNames) {
this.attachFileNames = fileNames;
}
public String getFromAddress() {
return fromAddress;
}
public void setFromAddress(String fromAddress) {
this.fromAddress = fromAddress;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getToAddress() {
return toAddress;
}
public void setToAddress(String toAddress) {
this.toAddress = toAddress;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
public String getContent() {
return content;
}
public void setContent(String textContent) {
this.content = textContent;
}
}
//调用
public static void main(String[] args){
//设置邮件参数
SendMail mail = new SendMail();
String body = "<div style='width:500px;height:100px;font-size:20px;border:solid red;'>代理登录</div>";

mail.setValidate(true);
mail.setToAddress("");  //接受者邮箱地
mail.setSubject("代理登录");
mail.setContent(body);
MailSender sms = new MailSender();
boolean result =  sms.sendHtmlMail(mail);//发html格式
System.out.println(result);
}

关于这个发送邮箱的问题：

myeclipse中的某个jar包库里面EE_5里面多个mail.jar的包，要删掉，具体哪个包记不得了，可以百度一下。

每种邮箱的port都不一样。

发送者邮箱的设置里面要打开POP3/SMTP服务