在java web项目我们经常会使用到发送邮件，比如发送告警通知，对实时性要求不太高的项目就可以发邮件，毕竟是免费的嘛，这里写了几段java发送邮件的代码，参考http://www.iteye.com/topic/352753，自己又改了一下，比如发送附件，多个抄送人等。
依赖jar包：mail-1.4.jar
1、MailSenderInfo邮件信息类
package com.chen.util;
import java.util.Properties;
/**
* 邮件信息
* */
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 = false;
// 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;
// 邮件的接收者，可以有多个
private String[] receivers;
// 邮件的抄送者，可以有多个
private String[] ccs;
/** *//**
* 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", validate ? "true" : "false");
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;
}
public String[] getCcs() {
return ccs;
}
public void setCcs(String[] ccs) {
this.ccs = ccs;
}
public String[] getReceivers() {
return receivers;
}
public void setReceivers(String[] receivers) {
this.receivers = receivers;
}
}
2、MyAuthenticator 该类发送邮件是鉴权用，继承Authenticator
package com.chen.util;
import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;
/**
* 该类发送邮件是鉴权用
* 继承Authenticator
*
* */
public class MyAuthenticator extends Authenticator{
String userName=null;
String password=null;
public MyAuthenticator(){
}
public MyAuthenticator(String username, String password) {
this.userName = username;
this.password = password;
}
protected PasswordAuthentication getPasswordAuthentication(){
return new PasswordAuthentication(userName, password);
}
}
3、MailUtil 发送邮件工具类
package com.chen.util;
import java.util.Date;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Address;
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;
import javax.mail.internet.MimeUtility;
public class MailUtil
{
//protected static final String serverHost=PropertiesUtil.getPropertiesByKey("prop.properties", "ServerHost");
protected static final String serverHost="smtp.qq.com";
protected static final String serverPort = "25";
protected static final String userName = "******@qq.com";
protected static final String password = "********";
/**
* 发送邮件给多个抄送人
* */
public static boolean sendMailtoMultiCC(MailSenderInfo mailInfo){
MyAuthenticator authenticator = null;
if (mailInfo.isValidate())
{
authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
}
Session sendMailSession = Session.getInstance(mailInfo.getProperties(), authenticator);
//sendMailSession.setDebug(true);
try {
//创建邮件
Message mailMessage = new MimeMessage(sendMailSession);
// 创建邮件发送者地址
Address from = new InternetAddress(mailInfo.getFromAddress());
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);
// 获取抄送者信息
String[] ccs = mailInfo.getCcs();
if (ccs != null){
// 为每个邮件接收者创建一个地址
Address[] ccAdresses = new InternetAddress[ccs.length];
for (int i=0; i<ccs.length; i++){
ccAdresses[i] = new InternetAddress(ccs[i]);
}
// 将抄送者信息设置到邮件信息中，注意类型为Message.RecipientType.CC
mailMessage.setRecipients(Message.RecipientType.CC, ccAdresses);
}
mailMessage.setSubject(mailInfo.getSubject());
mailMessage.setSentDate(new Date());
// 设置邮件内容
Multipart mainPart = new MimeMultipart();
BodyPart html = new MimeBodyPart();
html.setContent(mailInfo.getContent(), "text/html; charset=UTF-8");
//添加附件
String[] fileName = mailInfo.getAttachFileNames();
if(fileName != null)
{
for(int i=0;i<fileName.length;i++)
{
BodyPart bodyPart = new MimeBodyPart();
DataHandler dh = new DataHandler(new FileDataSource(fileName[i]));
bodyPart.setDataHandler(dh);
//防止附件名中文乱码
bodyPart.setFileName(MimeUtility.encodeText(dh.getName()));
mainPart.addBodyPart(bodyPart);
}
}
mainPart.addBodyPart(html);
mailMessage.setContent(mainPart);
// 发送邮件
Transport.send(mailMessage);
return true;
} catch (Exception ex) {
ex.printStackTrace();
}
return false;
}
//发送简单邮件
public static void main(String [] args) throws MessagingException
{
MailSenderInfo mailInfo = new MailSenderInfo();
mailInfo.setMailServerHost(serverHost);
mailInfo.setMailServerPort(serverPort);
mailInfo.setValidate(true);
mailInfo.setUserName(userName);
mailInfo.setPassword(password);
mailInfo.setFromAddress(userName);
mailInfo.setToAddress("**************@qq.com");
mailInfo.setSubject("我是主题");
mailInfo.setContent("我是内容");
String tos = "*******,*********";
if(!tos.equals("")){
String[] receivers = tos.split(",");
String[] ccs = receivers;
mailInfo.setReceivers(receivers);//多个接收人
mailInfo.setCcs(ccs);//多个抄送人
}
String fileName = "C:\\Users\\Administrator\\Desktop\\******.png,C:\\Users\\Administrator\\Desktop\\*********.sql";
if(!fileName.equals(""))
{
String [] fileNames = fileName.split(",");
mailInfo.setAttachFileNames(fileNames);
}
sendMailtoMultiCC(mailInfo);//发送多个抄送人
}
}
使用方法可以参考第3个类MailUtil的main方法里调用发送邮件的方法sendMailtoMultiCC，可以抄送给多人，可以发送多个附件。
借鉴了han2000lei博客，增加了多个抄送人和附件，如有兴趣可以移步。