javamail多线程群发，同时开5个线程。

import javax.mail.Transport; import javax.mail.internet.InternetAddress; import java.util.Date; import javax.mail.internet.MimeMessage; import javax.mail.Message; import javax.mail.Session; import java.util.Properties; import javax.mail.MessagingException; public class ThreadMail implements Runnable{ String smtp=""; String port=""; String from=""; String to=""; String cc=""; String content=""; String subject=""; String user=""; String pass=""; boolean auth=false; boolean debug=false; /** * 发送Email方法 * @return boolean */ public void run(){ try { //System.out.println(Thread.currentThread().getName()+" excute ......"); //创建属性对象 Properties props = new Properties(); //设置邮件传输协议为：smtp props.put("mail.transpost.protocol","smtp"); //设置邮件服务器地址 props.put("mail.smtp.host", this.smtp); //设置邮件服务器端口 props.put("mail.smtp.port",this.port); //创建session对象 Session sendMailSession=null; if(this.auth){ //设置邮件验证为真 props.put("mail.smtp.auth", "true"); SmtpAuthenticator sa=new SmtpAuthenticator(this.user,this.pass); sendMailSession = Session.getInstance(props, sa); }else{ sendMailSession = Session.getInstance(props, null); } //设置输出调试信息 sendMailSession.setDebug(this.debug); //创建信息对象 final MimeMessage newMessage = new MimeMessage(sendMailSession); //设置发信人地址 newMessage.setFrom(new InternetAddress(this.from)); //设置收信人地址，可以支持多用户发送 newMessage.setRecipients(Message.RecipientType.TO, InternetAddress.parse(this.to)); //设置抄送人地址 newMessage.setRecipients(Message.RecipientType.CC, InternetAddress.parse(this.cc)); //设置信件正文 newMessage.setContent(content, "text/plain;charset=GB2312"); //设置信件主题 newMessage.setSubject(this.subject,"GB2312"); //设置信件发送日期 newMessage.setSentDate(new Date()); //发送邮件 System.out.println("begin send to "+to+"..."); Transport.send(newMessage); }catch(MessagingException e){ System.out.println("to="+to+" title="+subject+" send mail Failed..."); } } /** * 设置smtp服务器地址 * @param smtp */ public void setSmtp(String smtp){ this.smtp=smtp; } /** * 设置端口 * @param port */ public void setPort(String port){ this.port=port; } /** * 设置发信人地址 * @param from */ public void setFrom(String from){ this.from=from; } /** * 设置收信人地址，可以支持多用户发送(,分隔) * @param to */ public void setTo(String to){ this.to=to; } /** * 设置抄送人地址 * @param from */ public void setCC(String cc){ this.cc=cc; } /** * 设置正文内容text格式 * @param content */ public void setContent(String content){ this.content=content; } /** * 设置标题 * @param subject */ public void setSubject(String subject){ this.subject=subject; } /** * 验证的用户名 * @param user */ public void setUser(String user){ this.user=user; } /** * 验证的用户密码 * @param pass */ public void setPass(String pass){ this.pass=pass; } /** * 是否验证 * @param auth */ public void setAuth(boolean auth){ this.auth=auth; } /** * 是否输出调试信息 * @param debug */ public void setDebug(boolean debug){ this.debug=debug; } }