javamail写带附件eml文件并调用outlook的方法

1 将邮件写入到文件的代码

      msg.saveChanges();
      File f = new File("d:/test.eml");
      msg.writeTo(new FileOutputStream(f));

2 调用outlook的代码

Process p = Runtime.getRuntime().exec("cmd /C start msimn.exe /eml:d:/test.eml");

3 完整的代码如下

package code.jdk.mail;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Properties;
import java.util.Vector;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Address;
import javax.mail.AuthenticationFailedException;
import javax.mail.Message;
import javax.mail.MessagingException;
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;
import javax.mail.internet.MimeUtility;

public class EmailWriteToFile {
  // 定义发件人、收件人、SMTP服务器、用户名、密码、主题、内容等
  private String displayName;

  private String to;

  private String from;

  private String smtpServer;

  private String username;

  private String password;

  private String subject;

  private String content;

  private boolean ifAuth; // 服务器是否要身份认证

  private String filename = "";

  private Vector file = new Vector(); // 用于保存发送附件的文件名的集合

  private String contentType = "text/html";

  private String charset = "utf-8";

  public void addFile(String filename) {
    file.add(filename);
  }

  public String getContentType() {
    return contentType;
  }

  public void setContentType(String contentType) {
    this.contentType = contentType;
  }

  public String getCharset() {
    return charset;
  }

  public void setCharset(String charset) {
    this.charset = charset;
  }

  /**
   * 设置SMTP服务器地址
   */
  public void setSmtpServer(String smtpServer) {
    this.smtpServer = smtpServer;
  }

  /**
   * 设置发件人的地址
   */
  public void setFrom(String from) {
    this.from = from;
  }

  /**
   * 设置显示的名称
   */
  public void setDisplayName(String displayName) {
    this.displayName = displayName;
  }

  /**
   * 设置服务器是否需要身份认证
   */
  public void setIfAuth(boolean ifAuth) {
    this.ifAuth = ifAuth;
  }

  /**
   * 设置E-mail用户名
   */
  public void setUserName(String username) {
    this.username = username;
  }

  /**
   * 设置E-mail密码
   */
  public void setPassword(String password) {
    this.password = password;
  }

  /**
   * 设置接收者
   */
  public void setTo(String to) {
    this.to = to;
  }

  /**
   * 设置主题
   */
  public void setSubject(String subject) {
    this.subject = subject;
  }

  /**
   * 设置主体内容
   */
  public void setContent(String content) {
    this.content = content;
  }

  public EmailWriteToFile() {

  }

  private int port = 25;

  public int getPort() {
    return port;
  }

  public void setPort(int port) {
    this.port = port;
  }

  /**
   * 发送邮件
   *
   * @throws IOException
   * @throws FileNotFoundException
   */
  public boolean send() throws FileNotFoundException, IOException {
    HashMap<String, String> map = new HashMap<String, String>();
    map.put("state", "success");
    String message = "邮件发送成功！";
    Session session = null;
    Properties props = System.getProperties();
    props.put("mail.smtp.host", smtpServer);
    props.put("mail.smtp.port", port);
    try {

      props.put("mail.smtp.auth", "false");
      session = Session.getDefaultInstance(props, null);

      session.setDebug(false);
      Transport trans = null;
      Message msg = new MimeMessage(session);
      try {
        Address from_address = new InternetAddress(from, displayName);
        msg.setFrom(from_address);
      } catch (java.io.UnsupportedEncodingException e) {
        e.printStackTrace();
      }
      InternetAddress[] address = { new InternetAddress(to) };
      msg.setRecipients(Message.RecipientType.TO, address);
      msg.setSubject(subject);
      Multipart mp = new MimeMultipart();
      MimeBodyPart mbp = new MimeBodyPart();
      mbp.setContent(content.toString(), getContentType() + ";charset=" + getCharset());
      mp.addBodyPart(mbp);
      if (!file.isEmpty()) {// 有附件
        Enumeration efile = file.elements();
        while (efile.hasMoreElements()) {
          mbp = new MimeBodyPart();
          filename = efile.nextElement().toString(); // 选择出每一个附件名
          FileDataSource fds = new FileDataSource(filename); // 得到数据源
          mbp.setDataHandler(new DataHandler(fds)); // 得到附件本身并至入BodyPart
          mbp.setFileName(MimeUtility.encodeText(fds.getName(), getCharset(),"B")); // 得到文件名同样至入BodyPart
          mp.addBodyPart(mbp);
        }
        file.removeAllElements();
      }
      msg.setContent(mp); // Multipart加入到信件
      msg.setSentDate(new Date()); // 设置信件头的发送日期
      // 发送信件
      msg.saveChanges();
      File f = new File("d:/test.eml");
      msg.writeTo(new FileOutputStream(f));

    } catch (AuthenticationFailedException e) {
      map.put("state", "failed");
      message = "邮件发送失败！错误原因： " + "身份验证错误!";
      e.printStackTrace();
      return false;
    } catch (MessagingException e) {
      message = "邮件发送失败！错误原因： " + e.getMessage();
      map.put("state", "failed");
      e.printStackTrace();
      Exception ex = null;
      if ((ex = e.getNextException()) != null) {
        System.out.println(ex.toString());
        ex.printStackTrace();
      }
      return false;
    }
    // System.out.println(" 提示信息:"+message);
    map.put("message", message);
    return true;
  }

  public static void main(String[] args) throws FileNotFoundException, IOException, InterruptedException {
    EmailWriteToFile o = new EmailWriteToFile();
    o.setSmtpServer("localhost");
    o.setFrom("[email protected]");
    o.setDisplayName("TOM");
    o.setTo("[email protected]");
    o.setSubject("Test Subject");
    o.setContent("Test Content");
    o.setCharset("GBK");
    o.addFile("e:/读我.txt");
    o.send();
    Process p = Runtime.getRuntime().exec("cmd /C start msimn.exe /eml:d:/test.eml");

  }

}