使用java发送邮件

1.下载对应的jar包 mail.jar和 activation.jar

代码如下 ： 每一步都写的很清楚。

Email_Autherticator.java（对用户进行认证的类）

package test;

import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;

public class Email_Autherticator extends Authenticator {
private String username;
private String password ;
public Email_Autherticator() {
super();
}
// public Email_Autherticator(String user,String pwd){
// super();
// username = user;
// password = pwd;
// }
public Email_Autherticator(MailSenderInfo msf) {
this.username=msf.getUserName();
this.password=msf.getPassword();

}
public PasswordAuthentication getPasswordAuthentication(){
return new PasswordAuthentication(username,password);
}
}

MailSenderInfo.java（发送邮件有需要的信息）

package test;

import java.util.Properties;

public class MailSenderInfo{
// 发送邮件的服务器的IP和端口
private String mailServerHost;
private String mailServerPort = "25";
// 邮件发送者的地址
private String fromAddress;
// 邮件接收者的地址
private String toAddress;

// 登陆邮件发送服务器的用户名和密码
private String userName;
private String password;
// 是否需要身份验证
private boolean validate = true;

// 邮件主题
private String subject;
// 邮件的文本内容
private String content;

// 邮件附件的文件名
private String[] attachFileNames;
/**
* 获得邮件会话属性
*/
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");
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;
}
}

SimpleMailSender.java（用来发送邮件的类）

package test;

import java.util.Date;

import javax.mail.Address;
import javax.mail.Authenticator;
import javax.mail.BodyPart;
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 SimpleMailSender{
/**
* 以文本格式发送邮件
* @param mailInfo 待发送的邮件的信息
*/
public static void sendTextMail(MailSenderInfo mailInfo){
//判断是否需要身份认证
Authenticator auth=null;
if (mailInfo.isValidate()) {
//如果需要身份认证，则创建一个密码验证器
auth = new Email_Autherticator(mailInfo);
}
// 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(mailInfo.getProperties(), auth);
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);
// 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(new Date());
// 设置邮件消息的主要内容
String mailContent = mailInfo.getContent();
mailMessage.setText(mailContent);
// 发送邮件
Transport.send(mailMessage);
System.out.println("发送成功");

} catch (MessagingException ex) {
ex.printStackTrace();
}
}

/**
* 以HTML格式发送邮件
* @param mailInfo 待发送的邮件信息
*/
public static boolean sendHtmlMail(MailSenderInfo mailInfo){
// 判断是否需要身份认证
Authenticator authenticator = null;
if (mailInfo.isValidate()) {
// 如果需要身份认证，则创建一个密码验证器
authenticator = new Email_Autherticator();
}
// 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(mailInfo.getProperties(), 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());
// Message.RecipientType.TO属性表示接收者的类型为TO
mailMessage.setRecipient(Message.RecipientType.TO,to);
// 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(new Date());

// MiniMultipart类是一个容器类，包含MimeBodyPart类型的对象
Multipart mainPart = new MimeMultipart();
// 创建一个包含HTML内容的MimeBodyPart
BodyPart html = new MimeBodyPart();
// 设置HTML内容
html.setContent(mailInfo.getContent(), "text/html; charset=GBK");
mainPart.addBodyPart(html);
// 将MiniMultipart对象设置为邮件内容
mailMessage.setContent(mainPart);
// 发送邮件
Transport.send(mailMessage);
System.out.println("发送成功!");
return true;
} catch (MessagingException ex) {
ex.printStackTrace();
}
return false;
}
public static void main(String[] args) {
// 创建邮件信息
MailSenderInfo mailInfo = new MailSenderInfo();
mailInfo.setMailServerHost("smtp.163.com");
mailInfo.setMailServerPort("25");
// mailInfo.setValidate(true);
mailInfo.setUserName("zzlasdfg");
mailInfo.setPassword("qwe123456");
mailInfo.setFromAddress("zzlasdfg@163.com");
mailInfo.setToAddress("626809932@qq.com");
mailInfo.setSubject("MyMail测试");
mailInfo.setContent("我的邮件测试/n/rMy test mail/n/r");

// 以文本格式发送邮件
SimpleMailSender.sendTextMail(mailInfo);
// 以HTML格式发送邮件
//SimpleMailSender.sendHtmlMail(mailInfo);
}
}
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