java web邮件收发

1.网上方法要导入两个包    

mail.jar&activation.jar

package com.zjh.shopping.util;

import java.util.Date;  
import java.util.Properties;  
 
import javax.activation.DataHandler;  
import javax.activation.FileDataSource;  
import javax.mail.Authenticator;  
import javax.mail.Multipart;  
import javax.mail.PasswordAuthentication;  
import javax.mail.internet.InternetAddress;  
import javax.mail.internet.MimeBodyPart;  
import javax.mail.internet.MimeMultipart;  
import javax.mail.internet.MimeUtility;  
 
 
public class JavaMailSendUtil {  
 
     
    public  void sendmail(String subject, String from, String[] to,  
            String text, String[] filenames, String mimeType) {  
        try {  
            Properties props = new Properties();  
 
            String smtp = "smtp.163.com"; // 设置发送邮件所用到的smtp  
            String servername = "*******";  //邮箱账号名
            String serverpaswd = "******";  //邮箱密码
 
            javax.mail.Session mailSession = null; // 邮件会话对象  
            javax.mail.internet.MimeMessage mimeMsg = null; // MIME 邮件对象  
 
            props = java.lang.System.getProperties(); // 获得系统属性对象  
            props.put("mail.smtp.host", smtp); // 设置SMTP主机  
            props.put("mail.smtp.auth", "true"); // 是否到服务器用户名和密码验证  
            // 到服务器验证发送的用户名和密码是否正确  
            SmtpAuthenticator myEmailAuther = new SmtpAuthenticator(servername,  
                    serverpaswd);  
            // 设置邮件会话 注意这里将认证信息放进了Session的创建参数里  
            mailSession = javax.mail.Session.getInstance(props,  
                    (Authenticator) myEmailAuther);  
            // 设置传输协议  
            javax.mail.Transport transport = mailSession.getTransport("smtp");  
           // 设置from、to等信息  
           mimeMsg = new javax.mail.internet.MimeMessage(mailSession);  
           if (null != from && !"".equals(from)) {  
               InternetAddress sentFrom = new InternetAddress(from);  
               mimeMsg.setFrom(sentFrom); // 设置发送人地址  
           }  
 
           InternetAddress[] sendTo = new InternetAddress[to.length];  
           for (int i = 0; i < to.length; i++) {  
               System.out.println("发送到:" + to[i]);  
               sendTo[i] = new InternetAddress(to[i]);  
           }  
 
           mimeMsg.setRecipients(  
                   javax.mail.internet.MimeMessage.RecipientType.TO, sendTo);  
           mimeMsg.setSubject(subject, "gb2312");  
 
           MimeBodyPart messageBodyPart1 = new MimeBodyPart();  
           // messageBodyPart.setText(UnicodeToChinese(text));  
           messageBodyPart1.setContent(text, mimeType);  
 
           // 附件传输格式  
           Multipart multipart = new MimeMultipart();  
           multipart.addBodyPart(messageBodyPart1);  
 
           for (int i = 0; i < filenames.length; i++) {  
               MimeBodyPart messageBodyPart2 = new MimeBodyPart();  
 
               String filename = filenames[i].split(";")[0];  
               String displayname = filenames[i].split(";")[1];  
               // 得到数据源  
               FileDataSource fds = new FileDataSource(filename);  
               // BodyPart添加附件本身  
               messageBodyPart2.setDataHandler(new DataHandler(fds));  
               // BodyPart添加附件文件名  
               messageBodyPart2.setFileName(MimeUtility  
                       .encodeText(displayname));  
               multipart.addBodyPart(messageBodyPart2);  
           }  
           mimeMsg.setContent(multipart);  
           // 设置信件头的发送日期  
           mimeMsg.setSentDate(new Date());  
           mimeMsg.saveChanges();  
           // 发送邮件  
           transport.send(mimeMsg);  
           transport.close();  
           System.out.println("发送到成功!!!");  
       } catch (Exception e) {  
           e.printStackTrace();  
       }  
   }  
 
    
   public static void main(String[] args) throws Exception {  
       String title = "测试邮件";// 所发送邮件的标题  
       String from = "************@163.com";// 从那里发送  
       String sendTo[] = { "********@qq.com" };// 发送到那里  
       // 邮件的文本内容，可以包含html标记则显示为html页面  
       String content = "test java send mail !!!!!!<br><a href="http://sjsky.javaeye.com/">My blog</a>";  
     // 所包含的附件，及附件的重新命名  
     String fileNames[] = { "d:\test.jpg;test.jpg" };  

     JavaMailSendUtil test = new JavaMailSendUtil();  
     try {  
         // MailSender mailsender = new MailSender();  
         test.sendmail(title, from, sendTo, content, fileNames,  
                 "text/html;charset=gb2312");  
     } catch (Exception ex) {  
         ex.printStackTrace();  
     }  
 }  

   
 class SmtpAuthenticator extends Authenticator {  
     String username = null;  
     String password = null;  

      
     public SmtpAuthenticator(String username, String password) {  
         super();  
         this.username = username;  
         this.password = password;  
     }  

      
     public PasswordAuthentication getPasswordAuthentication() {  
         return new PasswordAuthentication(this.username, this.password);  
       }  
   }  
}  

2.自己用的

package com.gree.mail.mailsend;

import java.util.Properties;

import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.naming.InitialContext;
import javax.naming.NamingException;

import com.sun.xml.internal.messaging.saaj.packaging.mime.MessagingException;

public class Mailsend2 {
    
    

public static Session getSession() {
    Session session = null;
    
//      session = (Session)new InitialContext().lookup("MailSession");
    
  
      Properties props = new Properties();
      props.put("mail.smtp.host", "10.1.1.168");
      props.put("mail.smtp.auth", "false");
      session = Session.getDefaultInstance(props, null);
    
    return session;
}

public static void sendMessage(String from, String[] to, String[] cc, String subject, String content,
                                 String mimeType) throws javax.mail.MessagingException {

    Message message = new MimeMessage(getSession());
    if (!StringUtils.isEmpty(from)) {
      InternetAddress sentFrom = new InternetAddress(from);
      message.setFrom(sentFrom);
    }
    InternetAddress[] sendTo = new InternetAddress[to.length];
    for (int i = 0; i < to.length; i++) {
      sendTo[i] = new InternetAddress(to[i]+"@gree.com.cn");
    }
    if ( (cc.length > 0) && (cc[0] != null)) {
      InternetAddress[] copyTo = new InternetAddress[cc.length];
      for (int i = 0; i < cc.length; i++) {
        copyTo[i] = new InternetAddress(cc[i]+"@gree.com.cn");
      }
      message.setRecipients(Message.RecipientType.CC, copyTo);
    }
    message.setRecipients(Message.RecipientType.TO, sendTo);

    //System.out.println("发送人员："+message.getRecipients(Message.RecipientType.TO));
    //System.out.println("抄送人员："+message.getRecipients(Message.RecipientType.CC))


    message.setSubject(subject);
    message.setContent(content, mimeType);
    Transport.send(message);
 }
 
public void sendHTMLMessage(String[] to, String[] cc, String title, String content)throws MessagingException {
    
    
    try {
        sendMessage("SCBWEB", to, cc, title+"-模具管理系统信息", content, "text/html;Charset=gb2312");
    } catch (javax.mail.MessagingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
         // System.out.println("2="+content);
}

public static void main(String[] args) {
    String [] to= new String[] {"180172"};
    String [] cc= new String[] {"180158"};
    String title="ceshi";
    String content="晚上小天请我们吃烤鱼，8号门对面，大概67点左右，等下下班别走开";
    try {
        Mailsend2.sendMessage("180170@gree.com.cn", to, cc, title, content, "text/html;Charset=utf-8");
    } catch (javax.mail.MessagingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
}
    }

}

myeclipse中发送邮件出现Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/mail/util/LineInputStream

出现这个问题的原因是jar包版本不统一,解决方法如下:
我在项目导入了jar包

与myeclipse自带jar冲突了

删除Java EE 5 Libraries/javaee.jar/mail里的包有东西.

具体操作：

进入myeclipse的安装目录：我安装的是myeclipse blue 8.5 具体路径如下

E:development_toolsmyeclipse_8.5install_dcommonpluginscom.genuitec.eclipse.j2eedt.core_8.5.0.me201003231033datalibrarysetEE_5

找到javaee.jar，打开后删除mail文件夹即可（需要先关闭运行着的myeclipse，否则无法删除）