java实现Email收发

package 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 private String username = ""; // smtp认证用户名和密码 private String password = ""; private String mailServerPort = ""; private String ToUser=""; 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 public Mail(String smtp) { setSmtpHost(smtp); createMimeMessage(); } 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 } 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(); // mp 一个multipart对象 // Multipart is a container that holds multiple body parts. return true; } catch (Exception e) { System.err.println("创建MIME邮件对象失败！" + e); return false; } } 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"); } } public void setNamePass(String name, String pass) { System.out.println("程序得到用户名与密码"); username = name; password = pass; } 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; } } public boolean setBody(String mailBody) { try { System.out.println("设置邮件体格式"); BodyPart bp = new MimeBodyPart(); // 转换成中文格式 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; } } 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; } } 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; } } public boolean setTo(String to) { System.out.println("设置收信人"); if (to == null) return false; try { mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress .parse(to)); return true; } catch (Exception e) { return false; } } public void setToUser(String ToUser) { System.out.println("添加抄送人"); try { mimeMsg.addRecipients(Message.RecipientType.CC, (Address[]) InternetAddress.parse(ToUser)); } catch (Exception e) { e.getMessage(); } } 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)); //發送抄送 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; } } public void setMailServerPort(String mailServerPort) { if("25".equals(mailServerPort)){ System.out.println("端口正确！"); }else{ System.out.println("端口错误！"); } } }