使用带有 smtp 但没有 SSL 的 JavaMail API 在 android 中发送电子邮件

Posted 2023-03-15

【中文标题】使用带有 smtp 但没有 SSL 的 JavaMail API 在 android 中发送电子邮件

【英文标题】：Send email in android using JavaMail API with smtp but without SSL

【发布时间】：2012-04-22 10:28:18

【问题描述】：

我已经解决了this 的问题，它适用于自己使用 SSL 的案例

我也尝试了this 一个，它在某种程度上适合我的需要，但它不适用于我的情况。

我还阅读了this 主题，但在我的代码中不使用 SSL 时仍然无法发送电子邮件。

每次我发送邮件时，它都会显示“例外 554，邮件被拒绝”

我真正需要的是使用::

邮件主机：“smtpout.secureserver.net”

端口号：25

谢谢，

哈哈。

【参考方案1】：

首先在你的项目中使用Mail.jar、activation.jar、Additional.jar文件上传

使用这个邮件类

package com.technosoft.AkashEmailAddress;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Date;
import java.util.Properties;
import javax.activation.CommandMap;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.MailcapCommandMap;
import javax.mail.BodyPart;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
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 android.util.Log;


public class Mail extends javax.mail.Authenticator  
  private String _user; 
  private String _pass; 

  private String[] _to; 
  private String _from; 

  private String _port; 
  private String _sport; 

  private String _host; 

  private String _subject; 
  private String _body; 

  private boolean _auth; 

  private boolean _debuggable; 

  private Multipart _multipart; 


  public Mail()  
    _host = "smtp.gmail.com"; // default smtp server 
    _port = "465"; // default smtp port 
    _sport = "465"; // default socketfactory port 

    _user = ""; // username 
    _pass = ""; // password 
  _from = ""; // email sent from 
    _subject = ""; // email subject 
    _body = ""; // email body 

    _debuggable = false; // debug mode on or off - default off 
    _auth = true; // smtp authentication - default on 

    _multipart = new MimeMultipart(); 

    // There is something wrong with MailCap, javamail can not find a handler for the multipart/mixed part, so this bit needs to be added. 
    MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap(); 
    mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html"); 
    mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml"); 
    mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain"); 
    mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed"); 
    mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822"); 
    CommandMap.setDefaultCommandMap(mc); 
   

  public Mail(String user, String pass)  
    this(); 

    _user = user; 
    _pass = pass; 
   

  public boolean send() throws Exception  
    Properties props = _setProperties(); 

    if(!_user.equals("") && !_pass.equals("") && _to.length > 0 && !_from.equals("") && !_subject.equals("") && !_body.equals(""))  

        Session session = Session.getInstance(props, this); 
     DataHandler handler = new DataHandler(new ByteArrayDataSource(_body.getBytes(), "text/plain")); 
      MimeMessage msg = new MimeMessage(session); 

      msg.setFrom(new InternetAddress(_from)); 
      msg.setDataHandler(handler);
      InternetAddress[] addressTo = new InternetAddress[_to.length]; 
      for (int i = 0; i < _to.length; i++)  
        addressTo[i] = new InternetAddress(_to[i]); 
       
        msg.setRecipients(MimeMessage.RecipientType.TO, addressTo); 

      msg.setSubject(_subject); 
      msg.setSentDate(new Date()); 

      // setup message body 
      BodyPart messageBodyPart = new MimeBodyPart(); 
      messageBodyPart.setText(_body); 
    _multipart.addBodyPart(messageBodyPart); 

      // Put parts in message 
    msg.setContent(_multipart); 

      // send email 
      Transport.send(msg); 
      Log.v("mas", "Email was  send");
      return true; 
     else  
         Log.v("mas", "Email was  not send");
      return false; 

     
   
  public class ByteArrayDataSource implements DataSource    
      private byte[] data;   
      private String type;   

      public ByteArrayDataSource(byte[] data, String type)    
          super();   
          this.data = data;   
          this.type = type;   
         

      public ByteArrayDataSource(byte[] data)    
          super();   
          this.data = data;   
         

      public void setType(String type)    
          this.type = type;   
         

      public String getContentType()    
          if (type == null)   
              return "application/octet-stream";   
          else  
              return type;   
         

      public InputStream getInputStream() throws IOException    
          return new ByteArrayInputStream(data);   
         

      public String getName()    
          return "ByteArrayDataSource";   
         

      public OutputStream getOutputStream() throws IOException    
          throw new IOException("Not Supported");   
         
     

  @Override 
  public PasswordAuthentication getPasswordAuthentication()  
    return new PasswordAuthentication(_user, _pass); 
   

  private Properties _setProperties()  
    Properties props = new Properties(); 

    props.put("mail.smtp.host", _host); 

    if(_debuggable)  
      props.put("mail.debug", "true"); 
     

    if(_auth)  
      props.put("mail.smtp.auth", "true"); 
     

    props.put("mail.smtp.port", _port); 
    props.put("mail.smtp.socketFactory.port", _sport); 
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); 
    props.put("mail.smtp.socketFactory.fallback", "false"); 

    return props; 
   

  // the getters and setters 
  public String getBody()  
    return _body; 
   

  public void setBody(String _body)  
    this._body = _body; 
  

public void setTo(String[] toArr) 
    // TODO Auto-generated method stub
    this._to=toArr;


public void setFrom(String string) 
    // TODO Auto-generated method stub
    this._from=string;


public void setSubject(String string) 
    // TODO Auto-generated method stub
    this._subject=string;
 

  // more of the getters and setters ….. 
  

Mail 类在你的 Main 类中有 send() 方法使用

Main class extends Activity
    Mail m=new Mail("[e-mail]","XXXXXXX");
    @SuppressWarnings("static-access")
    @Override
    public void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.email);
 String[] toArr = "[e-mail]","[e-mail]"; 
        m.setTo(toArr);
        m.setFrom("AKASH"); 
        m.setSubject("Your Subject"); 
        m.setBody("Your Message body");

        try 
            boolean i= m.send();
            if(i==true)
                Toast.makeText(getApplicationContext(),"Email was sent successfully ",2000).show();

            
            else
            
                Toast.makeText(getApplicationContext(),"Email was not sent successfully ",2000).show();

            

         catch (Exception e2) 
            // TODO Auto-generated catch block
            e2.printStackTrace();
        

【讨论】：

感谢代码@Akash，但您的示例也是使用 SSL，我想不使用 SSL。对不起。：P

如果您对此有任何提示，请告诉我们。 :)

***.com/questions/1949871/…

出现类似错误：03-08 14:58:15.341: E/AndroidRuntime(12229): java.lang.NoClassDefFoundError: javax.activation.DataHandler 03-08 14:58:15.341: E/ AndroidRuntime(12229): 在 com.cslbd.android.cattendence.app.Mail.send(Mail.java:91) 03-08 14:58:15.341: E/AndroidRuntime(12229): 在 com.cslbd.android.cattendence .app.BugActivity.onClick(BugActivity.java:76)

【参考方案2】：

这是我为您的错误而得到的，这意味着从您的 IP 发送邮件被阻止。 以下答案来自此链接 http://postmaster.bluetie.com/subcontent/smtpCodes.php

554 - BL0002：邮件被拒绝 - IP 地址 xxx.xxx.xxx.xxx 已列入黑名单 - 请参阅 http://www.spamcop.net/w3m?action=checkblock&ip=xxx.xxx.xxx.xxx 此错误消息表明在 SpamCop 黑名单中找到了发送 IP 地址。发送方必须发出删除/重置请求。 BlueTie 无法从黑名单中删除发送 IP 地址。您可能希望与您的 ISP 联系以获取有关此类错误的进一步帮助。

【讨论】：

@Haps -- 如果你正确地遵循第一个示例链接，我认为你不会遗漏任何代码，因为就在两天前，我使用相同的链接发送邮件并且它工作得很好......你需要查看您的 Internet 提供商或系统管理员