javamail,java发email,发邮件,jaf,activation,j2ee5冲突问题解决

首先要引mail.jar和activation.jar包

下载地址为:
javamail：[url]http://java.sun.com/products/javamail/downloads/index.html[/url]
JAF：[url]http://java.sun.com/javase/technologies/desktop/javabeans/jaf/downloads/index.html[/url]

下载后把.zip解压,然后把mail.jar和activation.jar复制到项目下的web-info/lib下

值得一说的是java ee 5和这个mail.jar和activation.jar有冲突

这个类在j2ee1.4下运行完全没有问题,但是如果在java ee 5下运行会报类找不到的错误,解决办法就是把myeclipse下的java ee 5的mail.jar和activation.jar干掉

进到

E:\Program Files\MyEclipse 6.5\myeclipse\eclipse\plugins\com.genuitec.eclipse.j2eedt.core_6.5.0.zmyeclipse650200806\data\libraryset\EE_5

这个路径里,可以看到javaee.jar,用rar把这个文件打开,然后进到javax文件夹里,删除mail.jar和activation.jar,然后再运行这个类,一切正常

发邮件的类

package javamail;   

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 SendMail {   

 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 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   

 /**  
  *   
  *   
  *   
  */  

 public SendMail() {   

//  setSmtpHost(getConfig.mailHost);// 如果没有指定邮件服务器,就从getConfig类中获取   
  setSmtpHost("smtp.126.com");// 如果没有指定邮件服务器,就从getConfig类中获取   

  createMimeMessage();   

 }   

 public SendMail(String smtp) {   

  setSmtpHost(smtp);   

  createMimeMessage();   

 }   

 /**  
  *   
  * @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   

 }   

 /**  
  *   
  * @return boolean  
  *   
  */  

 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;   

  }   

 }   

 /**  
  *   
  * @param need  
  *            boolean  
  *   
  */  

 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");   

  }   

 }   

 /**  
  *   
  * @param name  
  *            String  
  *   
  * @param pass  
  *            String  
  *   
  */  

 public void setNamePass(String name, String pass) {   

  username = name;   

  password = pass;   

 }   

 /**  
  *   
  * @param mailSubject  
  *            String  
  *   
  * @return boolean  
  *   
  */  

 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;   

  }   

 }   

 /**  
  *   
  * @param mailBody  
  *            String  
  *   
  */  

 public boolean setBody(String mailBody) {   

  try {   

   BodyPart bp = new MimeBodyPart();   

   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;   

  }   

 }   

 /**  
  *   
  * @param name  
  *            String  
  *   
  * @param pass  
  *            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;   

  }   

 }   

 /**  
  *   
  * @param name  
  *            String  
  *   
  * @param pass  
  *            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;   
  }   

 }   

 /**  
  *   
  * @param name  
  *            String  
  *   
  * @param pass  
  *            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;   
  }   

 }   

 /**  
  *   
  * @param name  
  *            String  
  *   
  * @param pass  
  *            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;   
  }   

 }   

 /**  
  *   
  * @param name  
  *            String  
  *   
  * @param pass  
  *            String  
  *   
  */  

 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.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;   

  }   

 }   

 /**  
  *   
  * Just do it as this  
  *   
  */  

 public static void main(String[] args) {   

  String mailbody = "<meta http-equiv=Content-Type content=text/html; charset=gb2312>"  
    +   

    "<div align=center><a href=http://www.youkuaiyun.com> csdn </a></div>";   

  SendMail themail = new SendMail("smtp.126.com");   

  themail.setNeedAuth(true);   

  if (themail.setSubject("Title") == false)   
   return;   

  if (themail.setBody(mailbody) == false)   
   return;   

  if (themail.setTo("toEmailUser") == false)   
   return;   

  if (themail.setFrom("yourEmailUser") == false)   
   return;   

  if (themail.addFileAffix("g:\\test.txt") == false)   
   return;   

  themail.setNamePass("mailUsername", "mailPassword");   

  if (themail.sendout() == false)   
   return;   

 }   

}