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Java发邮件 实现步骤+代码

  • 标签:JavaMail 发送邮件  更新时间:2013-11-10
  • Java发邮件的例子,JavaMail实例代码,邮件发送在Java中不是难点,但很实用,很多程序都是基于网络的,所以邮件的发送已经成为基础功能了。

    核心主文件代码如下:

    package com.pb.mail;
    import java.util.Properties;
    import javax.mail.Address;
    import javax.mail.BodyPart;
    import javax.mail.Message;
    import javax.mail.Multipart;
    import javax.mail.Session;
    import javax.mail.Transport;
    import javax.mail.internet.InternetAddress;
    import javax.mail.internet.MimeBodyPart;
    import javax.mail.internet.MimeMessage;
    import javax.mail.internet.MimeMultipart;
    public class Mail {
    	private MimeMessage mimeMsg;
    	private Session session;
    	private Properties props;
    	private String username;
    	private String password;
    	private Multipart mp;
    	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();
    		}
    		props.put("mail.smtp.host", hostName);
    	}
    	public boolean createMimeMessage() {
    		try {
    			System.out.println("准备获取邮件会话对象!");
    			session = Session.getDefaultInstance(props, null);
    		} catch (Exception e) {
    			System.out.println("获取邮件会话错误!" + e);
    			return false;
    		}
    		System.out.println("准备创建MIME邮件对象!");
    		try {
    			mimeMsg = new MimeMessage(session);
    			mp = new MimeMultipart();
    
    			return true;
    		} catch (Exception e) {
    			System.out.println("创建MIME邮件对象失败!" + e);
    			return false;
    		}
    	}
    
    	/*定义SMTP是否需要验证*/
    	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, String pass) {
    		username = name;
    		password = pass;
    	}
    
    	/*定义邮件主题*/
    	public boolean setSubject(String mailSubject) {
    		System.out.println("定义邮件主题!");
    		try {
    			mimeMsg.setSubject(mailSubject);
    			return true;
    		} catch (Exception e) {
    			System.err.println("定义邮件主题发生错误!");
    			return false;
    		}
    	}
    
    	/*定义邮件正文*/
    	public boolean setBody(String mailBody) {
    		try {
    			BodyPart bp = new MimeBodyPart();
    			bp.setContent("" + mailBody, "text/html;charset=GBK");
    			mp.addBodyPart(bp);
    			return true;
    		} catch (Exception e) {
    			System.err.println("定义邮件正文时发生错误!" + e);
    			return false;
    		}
    	}
    
    	/*设置发信人*/
    	public boolean setFrom(String from) {
    		System.out.println("设置发信人!");
    		try {
    			mimeMsg.setFrom(new InternetAddress(from)); //发信人
    			return true;
    		} catch (Exception e) {
    			return false;
    		}
    	}
    
    	/*定义收信人*/
    	public boolean setTo(String to) {
    		if (to == null)
    			return false;
    		System.out.println("定义收信人!");
    		try {
    			mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
    			return true;
    		} catch (Exception e) {
    			return false;
    		}
    	}
    
    	/*定义抄送人*/
    	public boolean setCopyTo(String copyto) {
    		if (copyto == null)
    			return false;
    		try {
    			mimeMsg.setRecipients(Message.RecipientType.CC, (Address[]) InternetAddress
    					.parse(copyto));
    			return true;
    		} catch (Exception e) {
    			return false;
    		}
    	}
    
    	/*发送邮件模块*/
    	public boolean sendOut() {
    		try {
    			mimeMsg.setContent(mp);
    			mimeMsg.saveChanges();
    			System.out.println("邮件发送中....");
    			Session mailSession = Session.getInstance(props, null);
    			Transport transport = mailSession.getTransport("smtp");
    			transport.connect((String) props.get("mail.smtp.host"), username, password);
    			transport.sendMessage(mimeMsg, mimeMsg
    			.getRecipients(Message.RecipientType.TO));
    			System.out.println("发送成功!");
    			transport.close();
    			return true;
    		} catch (Exception e) {
    			System.err.println("邮件失败!" + e);
    			return false;
    		}
    	}
    
    	/*调用sendOut方法完成发送*/
    	public static boolean sendAndCc(String smtp, String from, String to, String copyto,
    		String subject, String content, String username, String password) {
    		Mail theMail = new Mail(smtp);
    		theMail.setNeedAuth(true); // 验证
    		if (!theMail.setSubject(subject))
    			return false;
    		if (!theMail.setBody(content))
    			return false;
    		if (!theMail.setTo(to))
    			return false;
    		if (!theMail.setCopyTo(copyto))
    			return false;
    		if (!theMail.setFrom(from))
    			return false;
    		theMail.setNamePass(username, password);
    		if (!theMail.sendOut())
    			return false;
    		return true;
    	}
    }

    以下文件代码也必需的:

    package com.pb.mail;
    public class SendMail {
    	public static void main(String[] args) {
    		String smtp = "smtp.126.com";// smtp服务器
    		String from = "abcdefg@126.com";// 邮件显示名称
    		String to = "123456@qq.com";// 收件人的邮件地址,必须是真实地址
    		String copyto = "";// 抄送人邮件地址
    		String subject = "测试邮件";// 邮件标题
    		String content = "你好!";// 邮件内容
    		String username = "abcdefg";// 发件人真实的账户名
    		String password = "123456789";// 发件人密码
    		Mail.sendAndCc(smtp, from, to, copyto, subject, content, username, password);
    	}
    }

    文件名自拟,搞Java的都知道自己弄,不多费话了,亲测可用,你如果真用不了,那我真没办法!~~

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