javamail技术
package com.zh.javaEmail; import java.util.*; import javax.mail.*; import javax.mail.internet.*; import javax.activation.*; public class MysendMail { private MimeMessage mimeMsg; // MIME邮件对象 private Session session; // 邮件会话对象 private Properties props; // 系统属性 private boolean needAuth = false; // smtp是否需要认证 private String username = ""; // smtp认证用户名和密码 private String password = ""; private Multipart mp; // Multipart对象,邮件内容,标题,附件等内容均添加到其中后再生成MimeMessage对象 public MysendMail() { // setSmtpHost(getConfig.mailHost);//如果没有指定邮件服务器,就从getConfig类中获取 createMimeMessage(); } public MysendMail(String smtp) { setSmtpHost(smtp); createMimeMessage(); } /** * @param hostName * String */ public void setSmtpHost(String hostName) { System.out.println("设置系统属性:mail.smtp.host = " + hostName); if (props == null) props = System.getProperties(); // 获得系统属性对象 props.put("mail.smtp.host", hostName); // 设置SMTP主机 } /** * @return boolean */ public boolean createMimeMessage() { try { System.out.println("准备获取邮件会话对象!"); session = Session.getDefaultInstance(props, null); // 获得邮件会话对象 } catch (Exception e) { System.err.println("获取邮件会话对象时发生错误!" + e); return false; } System.out.println("准备创建MIME邮件对象!"); try { mimeMsg = new MimeMessage(session); // 创建MIME邮件对象 mp = new MimeMultipart(); return true; } catch (Exception e) { System.err.println("创建MIME邮件对象失败!" + e); return false; } } /** * @param need * boolean */ public void setNeedAuth(boolean need) { System.out.println("设置smtp身份认证:mail.smtp.auth = " + need); if (props == null) props = System.getProperties(); if (need) { props.put("mail.smtp.auth", "true"); } else { props.put("mail.smtp.auth", "false"); } } /** * @param name * String * @param pass * String */ public void setNamePass(String name, String pass) { username = name; password = pass; } /** * @param mailSubject * String * @return boolean */ public boolean setSubject(String mailSubject) { System.out.println("设置邮件主题!"); try { mimeMsg.setSubject(mailSubject); return true; } catch (Exception e) { System.err.println("设置邮件主题发生错误!"); return false; } } /** * @param mailBody * String */ public boolean setBody(String mailBody) { try { BodyPart bp = new MimeBodyPart(); bp.setContent( "<meta http-equiv=Content-Type content=text/html; charset=gb2312>" + mailBody, "text/html;charset=GB2312"); mp.addBodyPart(bp); return true; } catch (Exception e) { System.err.println("设置邮件正文时发生错误!" + e); return false; } } /** * @param name * String * @param pass * String */ public boolean addFileAffix(String filename) { System.out.println("增加邮件附件:" + filename); try { BodyPart bp = new MimeBodyPart(); FileDataSource fileds = new FileDataSource(filename); bp.setDataHandler(new DataHandler(fileds)); bp.setFileName(fileds.getName()); mp.addBodyPart(bp); return true; } catch (Exception e) { System.err.println("增加邮件附件:" + filename + "发生错误!" + e); return false; } } /** * @param name * String * @param pass * String */ public boolean setFrom(String from) { System.out.println("设置发信人!"); try { mimeMsg.setFrom(new InternetAddress(from)); // 设置发信人 return true; } catch (Exception e) { return false; } } /** * @param name * String * @param pass * String */ public boolean setTo(String to) { if (to == null) return false; try { mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress .parse(to)); return true; } catch (Exception e) { return false; } } /** * @param name * String * @param pass * String */ public boolean setCopyTo(String copyto) { if (copyto == null) return false; try { mimeMsg.setRecipients(Message.RecipientType.CC, (Address[]) InternetAddress.parse(copyto)); return true; } catch (Exception e) { return false; } } /** * @param name * String * @param pass * String */ public boolean sendout() { try { mimeMsg.setContent(mp); mimeMsg.saveChanges(); System.out.println("正在发送邮件...."); Session mailSession = Session.getInstance(props, null); Transport transport = mailSession.getTransport("smtp"); //传送数据的类 transport.connect((String) props.get("mail.smtp.host"), username, password); transport.sendMessage(mimeMsg, mimeMsg .getRecipients(Message.RecipientType.TO)); System.out.println("发送邮件成功!"); transport.close(); return true; } catch (Exception e) { System.err.println("邮件发送失败!" + e); return false; } } } /*这个是封装的类*/ package com.zh.javaEmail; public class SendMailToSomeone { public static void main(String []args){ SendMailToSomeone sts=new SendMailToSomeone(); sts.send("aa", "hello", "xxxxx@qq.com", "xxxxx@163.com", "xxxx", "smtp.163.com"); } /** * 发送电子邮件到指定的信箱 * @param title 邮件标题 * @param mailbody 邮件内容【一个网页,表格ok】 * @param sendTo 发送给谁 xxxx@tsinghua.org.cn * @param from 从哪些发送 admin@sohu.com * @param passwd 密码 123456 * @param sendStmp 发送邮件的smtp smtp.sohu.com [smtp.163.com] [smtp.sina.com] [smtp.qq.com] */ public void send(String title,String mailbody,String sendTo,String from,String passwd,String sendStmp){ //指明让那个smtp转发(搜狐) MysendMail themail = new MysendMail(sendStmp); //校验身份 themail.setNeedAuth(true); //邮件标题 if(themail.setSubject(title) == false) return; //将要发送的 内容放入邮件体 if(themail.setBody(mailbody) == false) return; //发送到哪里 if(themail.setTo(sendTo) == false) return; //谁发送的 if(themail.setFrom(from) == false) return; //if(themail.addFileAffix("e:\\butterfly.gif") == false) return; //将在sohu网站上的邮件用户名和 密码 放入邮件体 themail.setNamePass(from,passwd); //发送 if(themail.sendout() == false) return; } } 需要注意的几点: 1. java.lang.NoClassDefFoundError: com/sun/mail/util/BEncoderStream 这个问题是Mail.jar包没有引入到java路径中,或者是版本的问题, 重新下载一个MailXXXXX.zip 然后引包 2.Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/mail/util/LineInputStreams 原因是jar包版本不统一,解决方法如下: 删除Java EE 5 Libraries/javaee.jar/mail里的包有东西. 具体方法如下: 在Myeclipse6.0.1中用rar打开X:/Program Files/MyEclipse 6.0/myeclipse/eclipse/plugins/com.genuitec.eclipse.j2eedt.core_6.0.1.zmyeclipse601200710/data/libraryset/EE_5/javaee.jar 在Myeclipse8.5中 D:/Program Files/MyEclipse 8.5/Common/plugins/com.genuitec.eclipse.j2eedt.core_8.5.0.me201003231033/data/libraryset/EE_5/EE_5/javaee.jar ,然后删除mail,一切就ok了. 若删除的时候出错,则需要先在myeclipse里面删除掉引用了J2ee5.0的工程,然后再关闭myeclipse再进行删除操作。
注意当删除javaee.jar中的文件时,要删除mail和activation两个,然后再添加mail.jar和activation.jar两个包就可以了