最近公司在做发送邮件的项目，本人以前没有接触过，看了网上的代码之后，整理了一下自己的学习心得。希望跟大家一起分享！！！
这里包含 多收件人 多抄送人 多附件
import java.util.ArrayList;import java.util.Date;import java.util.List;import java.util.Properties;import javax.activation.DataHandler;import javax.activation.DataSource;import javax.activation.FileDataSource;import javax.mail.Message;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.MimeMessage.RecipientType;import javax.mail.internet.MimeMultipart;import com.hc.mail.handler.MailHandler;/*** @author 作者 hujingbo* @version 创建时间：-9-20 上午9:42:09 * 类说明 群发邮件 并且带有附件*/public class SendMultipleMail {public static void main(String[] args) throws Exception {List<String> filepath = new ArrayList<String>();filepath.add("D:/123.jpg");filepath.add("D:/students.xls");sendMail("1051064497@ ,huxiaoming625@","1051064497@ ,huxiaoming625@", "注册信息邮件","注册邮件,有附件", filepath);}/*** @throws Exception* @Description:* @Anthor: hujingbo* @param to* 收件人列表* @param cc* 抄送人列表* @param subject* 发送邮件的主题* @param body* 发送邮件的内容* @param filepath* 添加附件的路径* @return* @throws*/public static boolean sendMail(String to ,String cc, String subject, String body,List<String> filepath) throws Exception {if (subject == null) {subject = "无主题邮件";}if (body == null) {body = "";}// 加载配置信息MailHandler md = new MailHandler();Properties prop = md.conf;String hostName = prop.getProperty("mail.host");String username = prop.getProperty("mail.username");String password = prop.getProperty("mail.password");String from = "service@"; // 发件人信息System.out.println("配置信息：" + hostName + "/" + username + "/" + password);Session session = Session.getInstance(prop);session.setDebug(true);Message message = new MimeMessage(session);message.setFrom(new InternetAddress(from));message.setHeader("邮件标题", "dfsdfsdf");MimeMultipart multipart = new MimeMultipart();// 邮件正文MimeBodyPart text = new MimeBodyPart();text.setContent("这是邮件正文内容", "text/html;charset=UTF-8");multipart.addBodyPart(text);// 多个收件人地址InternetAddress[] addressesTo = null;if (to != null && to.trim().length() > 0) {String[] receiveList = to.split(",");int receiveCount = receiveList.length;if (receiveCount > 0) {addressesTo = new InternetAddress[receiveCount];for (int i = 0; i < receiveCount; i++) {addressesTo[i] = new InternetAddress(receiveList[i]);}}} else {System.out.println("None receiver!");return false;}// 多个抄送人地址InternetAddress[] addressesCc = null;if (cc != null && cc.trim().length() > 0) {String[] copyList = to.split(",");int copyCount = copyList.length;if (copyCount > 0) {addressesCc = new InternetAddress[copyCount];for (int i = 0; i < copyCount; i++) {addressesCc[i] = new InternetAddress(copyList[i]);}}}//多个附件if (filepath != null && filepath.size() > 0) {for (String path : filepath) {MimeBodyPart bodyPart = new MimeBodyPart();DataSource dh = new FileDataSource(path);bodyPart.setDataHandler(new DataHandler(dh));bodyPart.setFileName(dh.getName());multipart.addBodyPart(bodyPart);}} message.setContent(multipart);message.setRecipients(RecipientType.TO, addressesTo);message.setRecipients(, addressesCc);message.setSubject(subject);message.setSentDate(new Date());message.saveChanges();Transport transport = session.getTransport();transport.connect(hostName, username, password);transport.sendMessage(message, message.getAllRecipients());transport.close();return true;}}
