Java Web stmp发送带附件邮件（附SSL版）

public class mailfilesendutils {

 private properties props; //系统属性
 private session session; //邮件会话对象
 private mimemessage mimemsg; //mime邮件对象
 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

 /**
  * constructor
  * @param
  */
 public mailfilesendutils(){
  props = system.getproperties();
  props.put("mail.smtp.auth","false");
  session = session.getdefaultinstance(props, null);
  session.setdebug(true);
  mimemsg = new mimemessage(session);
  mp = new mimemultipart();
 }

 /**
  * constructor
  * @param smtp 邮件发送服务器
  */
 public mailfilesendutils(string smtp, string username, string password){
  props = system.getproperties();
  props.put("mail.smtp.auth","true");
  props.put("mail.smtp.host", smtp);
  props.put("username", username);
  props.put("password", password);
  session = session.getdefaultinstance(props, null);
  session.setdebug(true);
  mimemsg = new mimemessage(session);
  mp = new mimemultipart();
 }

 /**
  * 发送邮件
  */
 public boolean sendmail(string from, string[] to, string subject, string content, string filename) {
  try {
   //设置发信人
   mimemsg.setfrom(new internetaddress(from));
   //设置接收人
   for (int i = 0; i < to.length; i++) {
    mimemsg.setrecipients(message.recipienttype.to, internetaddress.parse(to[i]));
   }
   //设置抄送人
//   for (int i = 0; i < copyto.length; i++) {
//    mimemsg.setrecipients(message.recipienttype.cc, internetaddress.parse(copyto[i]));
//   }
   //设置主题
   mimemsg.setsubject(subject);
   //设置正文
   bodypart bp = new mimebodypart();
   bp.setcontent(content, "text/html;charset=utf-8");
   mp.addbodypart(bp);
   //设置附件
   bp = new mimebodypart();
   filedatasource fileds = new filedatasource(filename);
   bp.setdatahandler(new datahandler(fileds));
   bp.setfilename(mimeutility.encodetext(fileds.getname(),"utf-8","b"));
   mp.addbodypart(bp);
   mimemsg.setcontent(mp);
   mimemsg.savechanges();
   //发送邮件
   if(props.get("mail.smtp.auth").equals("true")){
    transport transport = session.gettransport("smtp");
    transport.connect((string)props.get("mail.smtp.host"), (string)props.get("username"), (string)props.get("password"));
    transport.sendmessage(mimemsg, mimemsg.getrecipients(message.recipienttype.to));
//    transport.sendmessage(mimemsg, mimemsg.getrecipients(message.recipienttype.cc));
    transport.close();
   }else{
    transport.send(mimemsg);
   }
   system.out.println("邮件发送成功");
  } catch (messagingexception e) {
   // todo auto-generated catch block
   e.printstacktrace();
  } catch (unsupportedencodingexception e) {
   // todo auto-generated catch block
   e.printstacktrace();
  }
  return true;
 }

// public void tosendmail(sendmailparam sendmailparam){
//  mailfilesendutils email = new mailfilesendutils(sendmailparam.getsmtp(), sendmailparam.getusername(), sendmailparam.getpassword());
//  email.sendmail(sendmailparam.getfrom(), sendmailparam.getto(), sendmailparam.getsubject(), sendmailparam.getcontent(), sendmailparam.getfilepath());
// }


 public static void main(string[] args) {
  string smtp = "smtp.exmail.qq.com";
  string username = "发送的邮箱账号";
  string password = "发送的邮箱密码";
  string from = "发送的邮箱";
  string[] to = {"接收邮件的邮箱"};
//  string[] copyto = {"抄送的邮箱"};
  string subject = "主题6";
  string content = "邮件内容6";
  string filename = "附件的文件";
  mailfilesendutils email = new mailfilesendutils(smtp, username, password);
//  email.sendmail(from, to, copyto, subject, content, filename);
  email.sendmail(from, to, subject, content, filename);
 }

}

public class mailfilesendutils {

 private properties props; //系统属性
 private session session; //邮件会话对象
 private mimemessage mimemsg; //mime邮件对象
 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

 /**
  * constructor
  * @param
  */
 public mailfilesendutils(){
  props = system.getproperties();
  props.put("mail.smtp.auth","false");
  session = session.getdefaultinstance(props, null);
  session.setdebug(true);
  mimemsg = new mimemessage(session);
  mp = new mimemultipart();
 }

 /**
  * constructor
  * @param smtp 邮件发送服务器
  */
 public mailfilesendutils(string smtp,
        string username,
        string password){
  security.addprovider(new com.sun.net.ssl.internal.ssl.provider());
  final string ssl_factory = "javax.net.ssl.sslsocketfactory";
  props = system.getproperties();
  mailsslsocketfactory sf = null;
  try {
   sf = new mailsslsocketfactory();
  } catch (generalsecurityexception e) {
  }
  sf.settrustallhosts(true);
  props.put("mail.smtp.auth","true");
  props.put("mail.smtp.host", smtp);
  props.put("mail.smtp.socketfactory.class", ssl_factory);
  props.put("mail.smtp.socketfactory.fallback", "false");
  props.put("mail.smtp.ssl.enable", "true");
  props.put("mail.smtp.port", "465");
  props.put("mail.smtp.ssl.socketfactory", sf);

//  props.put("username", username);
//  props.put("password", password);
  session = session.getinstance(props, new authenticator() {
   @override
   protected passwordauthentication getpasswordauthentication() {
    return new passwordauthentication(username, password);
   }
  });
  session.setdebug(true);
  mimemsg = new mimemessage(session);
  mp = new mimemultipart();
 }

 /**
  * 发送邮件
  */
 public boolean sendmail(string from,
       string[] to,
       string subject,
       string content,
       string filename) {
  try {
   //设置发信人
   mimemsg.setfrom(new internetaddress(from));
   //设置接收人
   for (int i = 0; i < to.length; i++) {
    mimemsg.setrecipients(message.recipienttype.to, internetaddress.parse(to[i]));
   }
   //设置抄送人
//   for (int i = 0; i < copyto.length; i++) {
//    mimemsg.setrecipients(message.recipienttype.cc, internetaddress.parse(copyto[i]));
//   }
   //设置主题
   mimemsg.setsubject(subject);
   //设置正文
   bodypart bp = new mimebodypart();
   bp.setcontent(content, "text/html;charset=utf-8");
   mp.addbodypart(bp);
   //设置附件
   bp = new mimebodypart();
   filedatasource fileds = new filedatasource(filename);
   bp.setdatahandler(new datahandler(fileds));
   bp.setfilename(mimeutility.encodetext(fileds.getname(),"utf-8","b"));
   mp.addbodypart(bp);
   mimemsg.setcontent(mp);
   mimemsg.savechanges();
   //发送邮件
   if(props.get("mail.smtp.auth").equals("true")){
    transport transport = session.gettransport("smtp");
    transport.connect((string)props.get("mail.smtp.host"), (string)props.get("username"), (string)props.get("password"));
    transport.sendmessage(mimemsg, mimemsg.getrecipients(message.recipienttype.to));
//    transport.sendmessage(mimemsg, mimemsg.getrecipients(message.recipienttype.cc));
    transport.close();
   }else{
    transport.send(mimemsg);
   }
   system.out.println("邮件发送成功");
  } catch (messagingexception e) {
   e.printstacktrace();
  } catch (unsupportedencodingexception e) {
   e.printstacktrace();
  }
  return true;
 }

 public boolean tosendmail(sendmailparam sendmailparam){
  mailfilesendutils email = new mailfilesendutils(
    sendmailparam.getsmtp(),
    sendmailparam.getusername(),
    sendmailparam.getpassword());
  email.sendmail(
    sendmailparam.getfrom(),
    sendmailparam.getto(),
    sendmailparam.getsubject(),
    sendmailparam.getcontent(),
    sendmailparam.getfilepath());
  return true;
 }


// public static void main(string[] args) {
//  string smtp = "smtp.mxhichina.com";
//  string username = "邮箱";
//  string password = "邮箱密码";
//  string from = "谁去发";
//  string[] to = {"发给谁"};
////  string[] copyto = {"抄送的邮箱"};
//  string subject = "huawei";
//  string content = "邮件内容6666";
//  string filename = "gdt-3583118353-ad-20170823.xls";
//  mailfilesendutils email = new mailfilesendutils(smtp, username, password);
////  email.sendmail(from, to, copyto, subject, content, filename);
//  email.sendmail(from, to, subject, content, filename);
// }

}

public class sendmailparam {
 private string smtp;
 private string username;
 private string password;
 private string from;//发送人
 private string[] to;//接收人
 //  string[] copyto = {"909891736@qq.com"};
 private string subject;//邮件主题
 private string content;//邮件内容
 private string filepath;//文件拿到的路径

 public sendmailparam(){
  this.smtp = "smtp.exmail.qq.com";//例子
  this.username = "邮箱账号";
  this.password = "邮箱密码";
  this.from = "邮箱";
  this.subject = "";
  this.content = "";
  this.filepath = "";
 }

 public string getsmtp() {
  return smtp;
 }

 public void setsmtp(string smtp) {
  this.smtp = smtp;
 }

 public string getusername() {
  return username;
 }

 public void setusername(string username) {
  this.username = username;
 }

 public string getpassword() {
  return password;
 }

 public void setpassword(string password) {
  this.password = password;
 }

 public string getfrom() {
  return from;
 }

 public void setfrom(string from) {
  this.from = from;
 }

 public string[] getto() {
  return to;
 }

 public void setto(string[] to) {
  this.to = to;
 }

 public string getsubject() {
  return subject;
 }

 public void setsubject(string subject) {
  this.subject = subject;
 }

 public string getcontent() {
  return content;
 }

 public void setcontent(string content) {
  this.content = content;
 }

 public string getfilepath() {
  return filepath;
 }

 public void setfilepath(string filepath) {
  this.filepath = filepath;
 }
}

<dependency>
  <groupid>javax.mail</groupid>
  <artifactid>mail</artifactid>
  <version>1.4.7</version>
 </dependency>

compile "javax.mail:mail:1.4.7"