android中使用javamail发送邮件附件

[java] 使用javamail必须先下载3个JAR包并导入工程 activation.jar   additonnal.jar   mail.jar

导入方法为: project->properties->java build path->libraries->add external jars

然后在android项目中添加网络访问权限

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

最后在程序中加载如下包

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;

import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.*;
import javax.mail.PasswordAuthentication;

调用函数代码如下

class MyAuthenticator
      extends javax.mail.Authenticator {
        private String strUser;
        private String strPwd;
        public MyAuthenticator(String user, String password)
        {
        this.strUser = user;
        this.strPwd = password;
        }

    protected PasswordAuthentication getPasswordAuthentication()
    {
      return new PasswordAuthentication(strUser, strPwd);
    }
}

public void send_mail_file(String str_to_mail,String str_from_mail,String str_smtp,String str_user,String str_pass,String str_title,String str_body,String str_file_path)
    {
        Log.v("lengfeng","send_mail_file");

        String host = str_smtp;   //发件人使用发邮件的电子信箱服务器
        String from = str_from_mail;    //发邮件的出发地（发件人的信箱）
        String to   = str_to_mail;   //发邮件的目的地（收件人信箱）

        Log.v("lengfeng",str_smtp);
        Log.v("lengfeng",str_from_mail);
        Log.v("lengfeng",str_to_mail);

        Properties props = System.getProperties();// Get system properties


        props.put("mail.smtp.host", host);// Setup mail server


        props.put("mail.smtp.auth", "true"); //这样才能通过验证

        MyAuthenticator myauth = new MyAuthenticator(str_user, str_pass);// Get session

        Session session = Session.getDefaultInstance(props, myauth);


        MimeMessage message = new MimeMessage(session); // Define message



        try {
            message.setFrom(new InternetAddress(from)); // Set the from address
        } catch (AddressException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }


        try {
            message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));// Set the to address
        } catch (AddressException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }


        try {
            message.setSubject(str_title);// Set the subject
        } catch (MessagingException e) {
            e.printStackTrace();
        }


        try {
            message.setText(str_body);// Set the content
        } catch (MessagingException e) {
            e.printStackTrace();
        }


        MimeBodyPart attachPart = new MimeBodyPart();
        FileDataSource fds = new FileDataSource(str_file_path); //打开要发送的文件
        try {
            attachPart.setDataHandler(new DataHandler(fds));
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        try {
            attachPart.setFileName(fds.getName());
        } catch (MessagingException e) {
            e.printStackTrace();
&nb

补充：移动开发 , Android ,