java发邮件代码示例，java发邮件示例,工作需要写了一个邮件发送

java发邮件代码示例，java发邮件示例,工作需要写了一个邮件发送

工作需要写了一个邮件发送的功能，看了写例子改了下。功能可以实现。如果要复杂点自己可以修改下。

import java.util.Date; import java.util.Properties; import javax.mail.Address; import javax.mail.Authenticator; import javax.mail.Message; import javax.mail.PasswordAuthentication; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; public class MainTest {     // 邮箱服务器     private String host = "smtp.163.com";     // 这个是你的邮箱用户名     private String username = "";     // 你的邮箱密码     private String password = "";     private String mail_head_name = "邮件头...";     private String mail_head_value = "邮件头...";     private String mail_to = "";     private String mail_from = "";     private String mail_subject = "邮件主题";     private String mail_body = "邮件内容";     private String personalName = "我的邮件";     public MainTest()     {     }     /**      * 此段代码用来发送普通电子邮件      */     public void send() throws Exception     {         try         {             Properties props = new Properties(); // 获取系统环境             Authenticator auth = new Email_Autherticator(); // 进行邮件服务器用户认证             props.put("mail.smtp.host", host);             props.put("mail.smtp.auth", "true");             Session session = Session.getDefaultInstance(props, auth);             // 设置session,和邮件服务器进行通讯。             MimeMessage message = new MimeMessage(session);             // message.setContent("foobar, "application/x-foobar"); // 设置邮件格式             message.setSubject(mail_subject); // 设置邮件主题             message.setText(mail_body); // 设置邮件正文             message.setHeader(mail_head_name, mail_head_value); // 设置邮件标题             message.setSentDate(new Date()); // 设置邮件发送日期             Address address = new InternetAddress(mail_from, personalName);             message.setFrom(address); // 设置邮件发送者的地址             Address toAddress = new InternetAddress(mail_to); // 设置邮件接收方的地址             message.addRecipient(Message.RecipientType.TO, toAddress);             Transport.send(message); // 发送邮件             System.out.println("send ok!");         } catch (Exception ex)         {             ex.printStackTrace();             throw new Exception(ex.getMessage());         }     }     /**      * 用来进行服务器对用户的认证      */     public class Email_Autherticator extends Authenticator     {         public Email_Autherticator()         {             super();         }         public Email_Autherticator(String user, String pwd)         {             super();             username = user;             password = pwd;         }         public PasswordAuthentication getPasswordAuthentication()         {             return new PasswordAuthentication(username, password);         }     }     public static void main(String[] args)     {     MainTest sendmail = new MainTest();         try         {             sendmail.send();         } catch (Exception ex)         {         }     } } 

注意：这个只能用163的发送到别的邮箱。