java发送邮件添加url附件

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架构领航博主 2024-11-28 12:37:45

文章标签 java发送邮件添加url附件 System java jar 文章分类 Java 后端开发

用javamail编程（我用的是MyEclipse8.0），当出现Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/mail/util/LineInputStream的异常时，是因为MyEclipse8.0自带的javamail版本较老，所以运行书上的一些例子时才不能通过。

解决的办法是：删除MyEclipse8.0安装目录下的javamail，比如我的是D:/Program Files/Genuitec/Common/plugins/com.genuitec.eclipse.j2eedt.core_8.0.0.me200911192043/data/libraryset/EE_5/javaee.jar。用rar打开，把里面的mail文件夹删除。然后导入新版本的mail.jar和activation.jar到项目的类库里面即可，我用的是javamail-1.4.3和jaf-1.1。

下载地址：（包含类、jar）

import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import java.util.Date;
import javax.activation.*;
import java.io.*;

public class Mail {

 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

 public Mail(String smtp) {
  setSmtpHost(smtp);
  createMimeMessage();
 }

 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
 }

 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);
   returnfalse;
  }
  System.out.println("准备创建MIME邮件对象！");
  try {
   mimeMsg = newMimeMessage(session); // 创建MIME邮件对象
   mp = newMimeMultipart(); // mp 一个multipart对象
   // Multipartis a container that holds multiple body parts.
   returntrue;
  } catch (Exception e) {
   System.err.println("创建MIME邮件对象失败！"+ e);
   returnfalse;
  }
 }

 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");
  }
 }

 public void setNamePass(String name, Stringpass) {
  System.out.println("程序得到用户名与密码");
  username = name;
  password = pass;
 }

 public boolean setSubject(String mailSubject){
  System.out.println("设置邮件主题！");
  try {
   mimeMsg.setSubject(mailSubject);
   returntrue;
  } catch (Exception e) {
   System.err.println("设置邮件主题发生错误！");
   returnfalse;
  }
 }

 public boolean setBody(String mailBody){
  try {
   System.out.println("设置邮件体格式");
   BodyPart bp =new MimeBodyPart();
   //转换成中文格式
   bp.setContent(
     "<metahttp-equiv=Content-Type content=text/html;charset=gb2312>"
       +mailBody, "text/html;charset=GB2312");
   mp.addBodyPart(bp);
   returntrue;
  } catch (Exception e) {
   System.err.println("设置邮件正文时发生错误！"+ e);
   returnfalse;
  }
 }

 public boolean addFileAffix(String filename){
  System.out.println("增加邮件附件：" +filename);
  try {
   BodyPart bp =new MimeBodyPart();
   FileDataSourcefileds = new FileDataSource(filename);
   bp.setDataHandler(newDataHandler(fileds));
   bp.setFileName(fileds.getName());
   mp.addBodyPart(bp);
   returntrue;
  } catch (Exception e) {
   System.err.println("增加邮件附件："+ filename + "发生错误！" + e);
   returnfalse;
  }
 }

 public boolean setFrom(String from) {
  System.out.println("设置发信人！");
  try {
   mimeMsg.setFrom(newInternetAddress(from)); // 设置发信人
   returntrue;
  } catch (Exception e) {
   returnfalse;
  }
 }

 public boolean setTo(String to) {
  System.out.println("设置收信人");
  if (to == null)
   returnfalse;
  try {
   mimeMsg.setRecipients(Message.RecipientType.TO,InternetAddress
     .parse(to));
   returntrue;
  } catch (Exception e) {
   returnfalse;
  }
 }

 public boolean setCopyTo(String copyto){
  System.out.println("发送附件到");
  if (copyto == null)
   returnfalse;
  try {
   mimeMsg.setRecipients(Message.RecipientType.CC,
     (Address[])InternetAddress.parse(copyto));
   returntrue;
  } catch (Exception e) {
   returnfalse;
  }
 }

 public boolean sendout() {
  try {
   mimeMsg.setContent(mp);
   mimeMsg.saveChanges();
   System.out.println("正在发送邮件....");
   SessionmailSession = Session.getInstance(props, null);
   Transporttransport = 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();
   returntrue;
  } catch (Exception e) {
   System.err.println("邮件发送失败！"+ e);
   returnfalse;
  }
 }
 

public static void main(String[] args) {
  String mailbody = "发送邮件测试<fontcolor=red>欢迎你,java</font>";
  Mail themail = newMail("smtp.sina.com");
  themail.setNeedAuth(true);
  // 标题
  if(themail.setSubject("发送邮件测试") == false)
   return;
  // 邮件内容 支持html 如<fontcolor=red>欢迎你,java</font>
  if (themail.setBody(mailbody)== false)
   return;
  // 收件人邮箱
  if (themail.setTo("########@sina.com") == false)
   return;
  // 发件人邮箱
  if (themail.setFrom("########@sina.com") == false)
   return;
  // 设置附件
  if(themail.addFileAffix("mail.txt") == false)
   return; //附件在本地机子上的绝对路径
  themail.setNamePass("用户名","密码"); // 用户名与密码,即您选择一个自己的电邮
  if (themail.sendout() ==false)
   return;
 }
}