???? 直接上代碼：3個類，兩個主要的類，一個測試類：

?? 主類（Mail）：

/** * @Title: Mail.java * @Package org.service.impl * @Description: TODO該方法的主要作用： * @author A18ccms A18ccms_gmail_com * @date 2017-5-30 下午10:20:35 * @version V1.0 */ package org.service.impl;import java.util.Date; import java.util.Properties;import javax.mail.Authenticator; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.AddressException; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage;/** * * 項目名稱：spring_Schop8 * 類名稱：Mail * 類描述： 不用spring實現郵件發送* 創建人：Mu Xiongxiong * 創建時間：2017-5-30 下午10:20:35 * 修改人：Mu Xiongxiong * 修改時間：2017-5-30 下午10:20:35 * 修改備注： * @version * */ public class Mail {private String mailServer,from ,to , mailSubject,mailContent,username,password;public Mail(String mailServer, String from, String to, String mailSubject,String mailContent, String username, String password) {this.mailServer = mailServer;this.from = from;this.to = to;this.mailSubject = mailSubject;this.mailContent = mailContent;this.username = username;this.password = password;}public Mail() {username = "tina";password = "123"; mailServer = "mail.com";from = "tina@mail.com";to = "jerry@mail.com";mailSubject = "問好";mailContent = "好久沒見，最近可好！";}public void send(){//設置服務器Properties prop = System.getProperties();prop.put("mail.smtp.host", mailServer);prop.put("mail.smtp.auth", "true");//產生Session服務EmailAuthenticator mailauth = new EmailAuthenticator(username, password);Session mailSession = Session.getInstance(prop,(Authenticator)mailauth);//封裝message對象Message message = new MimeMessage(mailSession);try {message.setFrom(new InternetAddress(from)); //設置發送人message.setRecipient(Message.RecipientType.TO, new InternetAddress(to)); //設置主題message.setSubject(mailSubject); //設置標題message.setContent(mailContent,"text/html;charset=utf-8"); //設置內容message.setSentDate(new Date()); //設置日期//和粗昂就愛你Transport實例Transport tran = mailSession.getTransport("smtp");tran.send(message, message.getAllRecipients());tran.close();} catch (AddressException e) {// TODO 異常執行塊！e.printStackTrace();} catch (MessagingException e) {// TODO 異常執行塊！e.printStackTrace();} //}}
第二個主類（EmailAuthenticator）：

package org.service.impl;import javax.mail.Authenticator; import javax.mail.PasswordAuthentication;import org.hibernate.validator.constraints.Email;public class EmailAuthenticator extends Authenticator {private String username=null;private String userpass = null;public EmailAuthenticator(String username, String userpass) {super();this.username = username;this.userpass = userpass;}public PasswordAuthentication getPasswordAuthentication(){return new PasswordAuthentication(username, userpass);}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getUserpass() {return userpass;}public void setUserpass(String userpass) {this.userpass = userpass;}}
測試類：

/*** * @Title: testMail1* @Description: 該方法的主要作用：java實現底層的郵件發送* @param 設定文件 * @return 返回類型：void * @throws*/@Testpublic void testMail1(){Mail mail = new Mail();mail.send();System.out.println("發送成功");}
源碼上完了，再看一下運行的結果吧：

可以看到發送人，發送時間，還有發送內容！已經發送成功！

轉載于:https://www.cnblogs.com/a1111/p/7459704.html

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