java技术——邮件的发送

在大多数的系统中都会有发送邮件的功能。所以整理了个发送邮件的工具类。以备查阅。

配置文件

mail.propertis

Source code

mail.smtp.auth=true
mail.smtp.starttls.enable=true
mail.smtp.host=smtp.qq.com
mail.smtp.port=465
username=
password=

 

java相关代码

Source code

package com.bobohe.mail;
 
import java.util.Date;
import java.util.Locale;
import java.util.Properties;
import java.util.ResourceBundle;
 
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
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 SendEmailUtil {
 
	private static String username;
	private static String password;
 
	public static boolean sendEmail() throws Exception {
		//读取邮件的配置文件
		ResourceBundle rb = ResourceBundle.getBundle("mail",Locale.ENGLISH);
 
		//获取配置参数
		String host = rb.getString("mail.smtp.host");
		String port = rb.getString("mail.smtp.port");
		username = rb.getString("username");
		password = rb.getString("password");
 
		//设置参数
		Properties props = new Properties();
		props.setProperty("mail.smtp.auth", rb.getString("mail.smtp.auth"));
		props.setProperty("mail.smtp.starttls.enable",rb.getString("mail.smtp.starttls.enable"));
		props.setProperty("mail.smtp.host", host);
		props.setProperty("mail.smtp.port", port);
		props.setProperty("mail.smtp.ssl.enable", "true");
		props.setProperty("mail.smtp.ssl.trust", host);
        props.setProperty("mail.smtp.ssl.checkserveridentity","false");
 
        //获取session对象
		Session session = Session.getInstance(props,
				new Authenticator() {
					protected PasswordAuthentication getPasswordAuthentication() {
						return new PasswordAuthentication(username, password);
					}
				});
 
		//打印debug信息
		session.setDebug(true);
 
		//邮件内容
		Message msg = new MimeMessage(session);
 
		msg.setFrom(new InternetAddress(username));
 
		msg.setRecipient(Message.RecipientType.TO, new InternetAddress("[email protected]"));
 
		msg.setSentDate(new Date());
 
		msg.setSubject("hava a test");
 
		MimeBodyPart mbp = new MimeBodyPart();
		mbp.setContent("</br>hava a test</br>hava a test</br>", "text/html;charset=UTF-8");
 
		Multipart mulp = new MimeMultipart();
		mulp.addBodyPart(mbp);
 
		msg.setContent(mulp);
 
		//获取Service对象
		Transport tran = session.getTransport("smtp");
 
		//连接服务器
		tran.connect(host, username, password);
 
		//发送邮件
		tran.sendMessage(msg, msg.getAllRecipients());
 
		return true;
	}
 
	public static void main(String[] args) throws Exception {
		sendEmail();
	}
 
}

 

正确的填写配置文件即可发送邮件。JavaMail version 为 1.4.3。由于使用props.setProperty("mail.smtp.ssl.trust", host)添加信任的服务器地址。所以不需要导入证书。如果没添加这个配置，怎需要导入证书到JDK的Java\jre6\lib\security目录下。

生成证书相关代码

Source code

package com.bobohe.mail;
 
import java.util.Date;
import java.util.Locale;
import java.util.Properties;
import java.util.ResourceBundle;
 
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
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 SendEmailUtil {
 
	private static String username;
	private static String password;
 
	public static boolean sendEmail() throws Exception {
		//读取邮件的配置文件
		ResourceBundle rb = ResourceBundle.getBundle("mail",Locale.ENGLISH);
 
		//获取配置参数
		String host = rb.getString("mail.smtp.host");
		String port = rb.getString("mail.smtp.port");
		username = rb.getString("username");
		password = rb.getString("password");
 
		//设置参数
		Properties props = new Properties();
		props.setProperty("mail.smtp.auth", rb.getString("mail.smtp.auth"));
		props.setProperty("mail.smtp.starttls.enable",rb.getString("mail.smtp.starttls.enable"));
		props.setProperty("mail.smtp.host", host);
		props.setProperty("mail.smtp.port", port);
		props.setProperty("mail.smtp.ssl.enable", "true");
//		props.setProperty("mail.smtp.ssl.trust", host);
        props.setProperty("mail.smtp.ssl.checkserveridentity","false");
 
        //获取session对象
		Session session = Session.getInstance(props,
				new Authenticator() {
					protected PasswordAuthentication getPasswordAuthentication() {
						return new PasswordAuthentication(username, password);
					}
				});
 
		//打印debug信息
		session.setDebug(true);
 
		//邮件内容
		Message msg = new MimeMessage(session);
 
		msg.setFrom(new InternetAddress(username));
 
		msg.setRecipient(Message.RecipientType.TO, new InternetAddress("[email protected]"));
 
		msg.setSentDate(new Date());
 
		msg.setSubject("hava a test");
 
		MimeBodyPart mbp = new MimeBodyPart();
		mbp.setContent("</br>hava a test</br>hava a test</br>", "text/html;charset=UTF-8");
 
		Multipart mulp = new MimeMultipart();
		mulp.addBodyPart(mbp);
 
		msg.setContent(mulp);
 
		//获取Service对象
		Transport tran = session.getTransport("smtp");
 
		//连接服务器
		tran.connect(host, username, password);
 
		//发送邮件
		tran.sendMessage(msg, msg.getAllRecipients());
 
		return true;
	}
 
	public static void main(String[] args) throws Exception {
		sendEmail();
	}
 
}

代码执行一次就会在JDK的Java\jre6\lib\security目录下生成证书。输入参数为邮件服务器host和port。用:号隔开。