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1.把邮件保存为一个文件，这个文件可以直接用Outlook,Foxmail等邮件客户端工具打开。 private void savemail(MimeMessage msg, String path) { try { File f = new File(path); f.getParentFile().mkdirs(); FileOutputStream fo = new FileOutputStream(f); //CRLFOutputStream 可以把一些换行符不满意MIME规范的邮件进行修正。 CRLFOutputStream CRLFO = new CRLFOutputStream(fo); msg.writeTo(CRLFO); CRLFO.close(); fo.close(); } catch (Exception ex) { ex.printStackTrace(); } } 调用： savemail(msg,"c:/lizongbo/testmail.eml"); 2.对邮件体使用base64编码。 默认情况下使用的是quoted-printable编码： 示例如下： MimeMessage msg = new MimeMessage((Session)null); msg.setFrom(new InternetAddress("lizongbo@gmail.com")); msg.setRecipient(Message.RecipientType.TO, new InternetAddress("lizongbo@msn.com")); msg.setText("测试一下，邮件来自 http://www.donews.net/lizongbo !!!"); msg.setSubject("测试标题！！！", "GB2312"); MimeMultipart multipart = new MimeMultipart(); MimeBodyPart txtbodyPart = new MimeBodyPart(); txtbodyPart.setText("这是一封html邮件，请用html方法察看！！！"); multipart.addBodyPart(txtbodyPart); MimeBodyPart htmlodyPart = new MimeBodyPart(); String content="html邮件内容！来自 http://www.donews.net/lizongbo "; content = "<html><body>" + content + "</body><html>"; htmlodyPart.setContent(content, "text/html;charset=GBK"); multipart.addBodyPart(htmlodyPart); msg.setContent(multipart); msg.saveChanges(); 得到的邮件内容为： -------------------------------------------------------------- Message-ID: <32591083.1110043294640.JavaMail.lizongbo@localhost> From: lizongbo@gmail.com To: lizongbo@msn.com Subject: =?GB2312?B?suLK1LHqzOKjoaOho6E=?= Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_0_8568863.1110043294484" ------=_Part_0_8568863.1110043294484 Content-Type: text/plain; charset=GBK Content-Transfer-Encoding: base64 1eLKx9K7t+JodG1s08q8/qOsx+vTw2h0bWy3vcq9suy/tKOho6GjoQ== ------=_Part_0_8568863.1110043294484 Content-Type: text/html;charset=GBK Content-Transfer-Encoding: quoted-printable <html><body>html=D3=CA=BC=FE=A3=A1 http://www.donews.net/lizongbo </body><h= tml> ------=_Part_0_8568863.1110043294484-- -------------------------------------------------------------- 使用base64编码的代码： -------------------------------------------------------------- MimeMessage msg = new MimeMessage( (Session)null); msg.setFrom(new InternetAddress("lizongbo@gmail.com")); msg.setRecipient(Message.RecipientType.TO, new InternetAddress("lizongbo@msn.com")); msg.setText("测试一下，邮件来自 http://www.donews.net/lizongbo !!!"); msg.setSubject("测试标题！！！", "GB2312"); MimeMultipart multipart = new MimeMultipart(); MimeBodyPart txtbodyPart = new MimeBodyPart(); txtbodyPart.setText("这是一封html邮件，请用html方法察看！！！"); multipart.addBodyPart(txtbodyPart); MimeBodyPart htmlodyPart = new MimeBodyPart(); String content = "html邮件！ http://www.donews.net/lizongbo "; content = "<html><body>" + content + "</body><html>"; htmlodyPart.setContent(content, "text/html;charset=GBK"); //最最要害的就这么一行 htmlodyPart.setHeader("Content-Transfer-Encoding", "base64"); multipart.addBodyPart(htmlodyPart); msg.setContent(multipart); msg.saveChanges(); 得到邮件内容如下： -------------------------------------------------------------- Message-ID: <33109165.1110043370875.JavaMail.lizongbo@localhost> From: lizongbo@gmail.com To: lizongbo@msn.com Subject: =?GB2312?B?suLK1LHqzOKjoaOho6E=?= Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_0_8568863.1110043370687" ------=_Part_0_8568863.1110043370687 Content-Type: text/plain; charset=GBK Content-Transfer-Encoding: base64 1eLKx9K7t+JodG1s08q8/qOsx+vTw2h0bWy3vcq9suy/tKOho6GjoQ== ------=_Part_0_8568863.1110043370687 Content-Type: text/html;charset=GBK Content-Transfer-Encoding: base64 PGh0bWw+PGJvZHk+aHRtbNPKvP6joSBodHRwOi8vd3d3LmRvbmV3cy5uZXQvbGl6b25nYm8gPC9i b2R5PjxodG1sPg== ------=_Part_0_8568863.1110043370687-- 3.启动javamail的调试模式,可以在发送和接收邮件的时候方便查看具体的调试信息，只需要： //Session session = Session.getInstance(System.getProperties()); session.getProperties().setProperty("mail.debug","true"); session.setDebug(true); //默认的是输出调试信息到控制台 4.显式连接到需要验证的smtp服务器进行邮件发送。 一般的资料都说是自己继续javax.mail.Authenticator. 代码如下： package com.lizongbo.javamail; import javax.mail.*; public class MailAuthenticator extends Authenticator { public MailAuthenticator() { } private String mUser; private String mPass; public MailAuthenticator(String userName, String passWord) { super(); mUser = userName; mPass = passWord; } public PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(mUser, mPass); } } 调用的示例： Session session = Session.getInstance(System.getProperties(),new MailAuthenticator ("lizongbo","password") ); MimeMessage msg = new MimeMessage(session); Transport.send(msg); 其实也可以不继续这个class,而是直接使用用户名和密码连接到邮件服务器进行邮件发送操作。 MimeMessage msg = new MimeMessage( (Session)null); msg.setFrom(new InternetAddress("lizongbo@gmail.com")); msg.setRecipient(Message.RecipientType.TO, new InternetAddress("lizongbo@msn.com")); //中间代码略去 msg.saveChanges(); Transport smtpTransport = session.getTransport("smtp"); smtpTransport.connect("smtp.163.com", 25, "lizongbo", "password"); //切忌不可以使用 smtpTransport.send(msg)和smtpTransport.send(msg,msg.getAllRecipients()); //因为这两个是静态方式,无法获取与smtpTransport这个实例有关的参数. smtpTransport.sendMessage(msg, msg.getAllRecipients()); 详细可以通过阅读javamail1.3.2的源代码来发现一些细节差异。 返回类别: 教程 上一教程: 提升Java桌面客户端程序性能 下一教程: Java入门笔记6_线程 您可以阅读与"javamail的几个实用知识点"相关的教程: · JAVA中最为要害的几个知识点 · JAVA中最为要害的几个知识点 · 正则表达式在javascript中的几个实例2 · 正则表达式在javascript中的几个实例1 · 易混淆的几个JAVA术语（转贴） |
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