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使用JavaMail发送邮件的Java类2014-08-30使用JavaMail发送邮件需要用到mail.jar和activtion.jar两个包。

该类实现了较完整的邮件发送功能,包括以HTML格式发送,添加附件和抄送人。下面是具体的代码:

Mail.java:

package cn.cgw.util.mail;import java.util.Properties;import javax.activation.DataHandler;import javax.activation.FileDataSource;import javax.mail.Address;import javax.mail.BodyPart;import javax.mail.Message;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;public class Mail { 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 //smtp认证用户名和密码 private String username; 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/*** Constructor* @param smtp 邮件发送服务器*/public Mail(String smtp){ setSmtpHost(smtp); createMimeMessage(); } /*** 设置邮件发送服务器* @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 } /*** 创建MIME邮件对象* @return*/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; } } /*** 设置SMTP是否需要验证* @param need*/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"); } } /*** 设置用户名和密码* @param name* @param pass*/public void setNamePass(String name,String pass) { username = name; password = pass; } /*** 设置邮件主题* @param mailSubject* @return*/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; } }/** * 设置邮件正文* @param mailBody String */ public boolean setBody(String mailBody) { try{ BodyPart bp = new MimeBodyPart(); bp.setContent(""+mailBody,"text/html;charset=GBK"); 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; } } /** * 添加附件* @param filename 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; } } /** * 设置发信人** @param from 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; } } /** * 设置收信人* @param to 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; } } /** * 设置抄送人* @param copyto 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; } } /** * 发送邮件*/ 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"); transport.connect((String)props.get("mail.smtp.host"),username,password); transport.sendMessage(mimeMsg,mimeMsg.getRecipients(Message.RecipientType.TO)); transport.sendMessage(mimeMsg,mimeMsg.getRecipients(Message.RecipientType.CC)); //transport.send(mimeMsg); 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; } } /*** 调用sendOut方法完成邮件发送* @param smtp* @param from* @param to* @param subject* @param content* @param username* @param password* @return boolean*/public static boolean send(String smtp,String from,String to,String subject,String content,String username,String password) {Mail theMail = new Mail(smtp);theMail.setNeedAuth(true); //需要验证if(!theMail.setSubject(subject)) return false;if(!theMail.setBody(content)) return false;if(!theMail.setTo(to)) return false;if(!theMail.setFrom(from)) return false;theMail.setNamePass(username,password);if(!theMail.sendOut()) return false;return true;}/*** 调用sendOut方法完成邮件发送,带抄送* @param smtp* @param from* @param to* @param copyto* @param subject* @param content* @param username* @param password* @return boolean*/public static boolean sendAndCc(String smtp,String from,String to,String copyto,String subject,String content,String username,String password) {Mail theMail = new Mail(smtp);theMail.setNeedAuth(true); //需要验证if(!theMail.setSubject(subject)) return false;if(!theMail.setBody(content)) return false;if(!theMail.setTo(to)) return false;if(!theMail.setCopyTo(copyto)) return false;if(!theMail.setFrom(from)) return false;theMail.setNamePass(username,password);if(!theMail.sendOut()) return false;return true;}/*** 调用sendOut方法完成邮件发送,带附件* @param smtp* @param from* @param to* @param subject* @param content* @param username* @param password* @param filename 附件路径* @return*/public static boolean send(String smtp,String from,String to,String subject,String content,String username,String password,String filename) {Mail theMail = new Mail(smtp);theMail.setNeedAuth(true); //需要验证if(!theMail.setSubject(subject)) return false;if(!theMail.setBody(content)) return false;if(!theMail.addFileAffix(filename)) return false; if(!theMail.setTo(to)) return false;if(!theMail.setFrom(from)) return false;theMail.setNamePass(username,password);if(!theMail.sendOut()) return false;return true;}/*** 调用sendOut方法完成邮件发送,带附件和抄送* @param smtp* @param from* @param to* @param copyto* @param subject* @param content* @param username* @param password* @param filename* @return*/public static boolean sendAndCc(String smtp,String from,String to,String copyto,String subject,String content,String username,String password,String filename) {Mail theMail = new Mail(smtp);theMail.setNeedAuth(true); //需要验证if(!theMail.setSubject(subject)) return false;if(!theMail.setBody(content)) return false;if(!theMail.addFileAffix(filename)) return false; if(!theMail.setTo(to)) return false;if(!theMail.setCopyTo(copyto)) return false;if(!theMail.setFrom(from)) return false;theMail.setNamePass(username,password);if(!theMail.sendOut()) return false;return true;}}
测试代码:

public static void main(String[] args){String smtp = "SMTP服务器";String from = "发信人";String to = "收信人";String copyto = "抄送人";String subject = "邮件主题";String content = "邮件内容";String username="用户名";String password="密码";String filename = "附件路径,如:F:\笔记<a>\struts2</a>与mvc.txt";Mail.sendAndCc(smtp, from, to, copyto, subject, content, username, password, filename);}