JavaMail实现邮件的发送-阿里云开发者社区

1、引入相关的Jar包：

activation.jar、cos.jar、mail.jar

<dependency>
<groupId>com.alibaba.external</groupId>
<artifactId>java.activation</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>com.alibaba.external</groupId>
<artifactId>java.mail</artifactId>
<version>1.4.3</version>
</dependency>
<dependency>
<groupId>com.alibaba.external</groupId>
<artifactId>java.servlet</artifactId>
<version>2.5</version>
</dependency>

2、相关的发送代码

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class SEND extends HttpServlet {
public SEND() {
super();
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
request.setCharacterEncoding("gb2312");
String from = request.getParameter("from");
String to = request.getParameter("to");
String subject = request.getParameter("subject");
String context = request.getParameter("context");
// 确定要发送的邮件服务器的地址
String mailserver = "d9e307714c5044f";
// 设置邮件的传输协议
try {
Properties prop = System.getProperties();
prop.put("mail.smtp.host", mailserver);
// 建立邮件发送的连接
Session session = Session.getDefaultInstance(prop, null);
// 创建发送的信息的载体
Message msg = new MimeMessage(session);
// 设置相关的邮件属性
msg.setFrom(new InternetAddress(from));
// 点到点的发送
msg.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
/*
* //群发 msg.setRecipients(Message.RecipientType.TO, new
* InternetAddress[]{new InternetAddress(to),new
* InternetAddress(to)}); //借助循环的标准发送
*/
msg.setSubject(subject);
msg.setSentDate(new Date());
msg.setText(context);
// 发送
Transport.send(msg);
} catch (Exception e) {
}
out.print("send ok");
out.flush();
out.close();
}
}

cmainserver下载：http://www.onlinedown.net/softdown/9044_2.htm

安装好了之后，执行如下步骤：开始->控制面板->管理工具->Internet 信息服务，在启动的“Internet 信息服务”下面，找到“默认站点”，右键点击“新建”->“虚拟目录”，随便取个别名（比如mail），在“目录”处浏览到cmainserver安装目录下面的webmail（比如：D:\ProgramFiles\CMailServer\webmail）。在启动之后，即可通过http访问mail的网站了。

3、使用JavaMail在邮件中发送图片

本例参考：http://topic.csdn.net/t/20051012/09/4320650.html

带附件的参考：http://www.blogjava.net/sunfruit/archive/2006/10/24/77086.html

图片的保存与显示，参考：http://www.blogjava.net/PrettyBoyCyb/archive/2006/11/13/80922.html

javax.mail总结：http://lgcjar.javaeye.com/blog/511127

package com.alibaba.annotation.client;
import java.util.Properties;
import java.util.Date;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
public class Test {
/**
* @param args
*/
public static void main(String[] args) throws Exception {
sendhtml(args);
}
public static void sendhtml(String[] argv) throws Exception {
String to = "q123456789@163.com ";
String subject = "null ";
String from = "abcdef@163.com ";
String cc = null;
String bcc = null;
String mailhost = "smtp.163.com ";
boolean debug = false;
String username = "abcdef ";
String password = "123456 ";
Properties props = System.getProperties();
props.put("mail.smtp.auth ", "true ");
SMTPAuth auth = new SMTPAuth(username, password);
// could use Session.getTransport() and Transport.connect()
// assume we 're using SMTP
if (mailhost != null)
props.put("mail.smtp.host ", mailhost);
// Get a Session object
Session session = Session.getDefaultInstance(props, auth);
if (debug)
session.setDebug(true);
// construct the message
Message msg = new MimeMessage(session);
if (from != null)
msg.setFrom(new InternetAddress(from));
else
msg.setFrom();
msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to,
false));
if (cc != null)
msg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(
cc, false));
if (bcc != null)
msg.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(
bcc, false));
msg.setSubject(subject);
MimeBodyPart mbp1 = new MimeBodyPart();
String html = " <!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\"> "
+ " <html> "
+ " <head> <title> </title> </head> "
+ " <body> "
+ " see the following jpg : it is a car! "
+ " <a href=http://www.a.com/a.jsp> hello </a> "
+ " <IMG SRC=cid:7e2a34e1.jpg width=80% height=60%> "
+ " end of jpg " + " </body> " + " </html> ";
mbp1.setContent(html, "text/html ");
FileDataSource fds = new FileDataSource("c:/7e2a34e1.jpg ");
MimeBodyPart mbp2 = new MimeBodyPart();
mbp2.setFileName(fds.getName());
mbp2.setText("This is a beautiful car ! ");
mbp2.setDataHandler(new DataHandler(fds));
//mbp2.setHeader("Content-ID ", fds.getName());
mbp2.setHeader( "Content-ID ", " < " + fds.getName() + "> ");
MimeMultipart mp = new MimeMultipart("related ");// alternative
mp.addBodyPart(mbp1);
mp.addBodyPart(mbp2);
msg.setContent(mp);
msg.setSentDate(new Date());
Transport.send(msg);
System.out.println(mp.getCount());
System.out.println("\nMail was sent successfully. ");
}
}
class SMTPAuth extends javax.mail.Authenticator {
private String user, password;
public SMTPAuth(String u, String p) {
user = u;
password = p;
}
public void getuserinfo(String getuser, String getpassword) {
user = getuser;
password = getpassword;
}
protected javax.mail.PasswordAuthentication getPasswordAuthentication() {
return new javax.mail.PasswordAuthentication(user, password);
}
}

【注意】

1、经测试通过的程序

package com.company.demoes;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
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;
/**
* 本程序用java来实现Email的发送，所用到的协议为：SMTP，端口号为25；
* 方法：用Socket进行实现，打开客户端的Socket，并连接上服务器：
* 如：Socket sockClient = new Socket("smtp.qq.com",23);
* 这表示发件方连接的是QQ邮箱的服务器，端口号为23
*
*/
public class Email {
/**
* 整个MIME邮件对象
*/
private MimeMessage mimeMsg;
/**
* 专门用来发送邮件的Session会话
*/
private Session session;
/**
* 封装邮件发送时的一些配置信息的一个属性对象
*/
private Properties props;
/**
* 发件人的用户名
*/
private String username;
/**
* 发件人的密码
*/
private String password;
/**
* 用来实现附件添加的组件
*/
private Multipart mp;
/**
* 发送参数初始化,有的服务器不需要用户验证，所以这里对用户名和密码进行初始化""
*
* @param smtp
* SMTP服务器的地址，比如要用QQ邮箱，哪么应为："smtp.qq.com"，163为： "smtp.163.com"
*/
public Email(String smtp) {
username = "";
password = "";
// 设置邮件服务器
setSmtpHost(smtp);
// 创建邮件
createMimeMessage();
}
/**
* 设置发送邮件的主机(JavaMail需要Properties来创建一个session对象。
* 它将寻找字符串"mail.smtp.host"，属性值就是发送邮件的主机);
*
* @param hostName
*/
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);
}
/**
* (这个Session类代表JavaMail 中的一个邮件session. 每一个基于
* JavaMail的应用程序至少有一个session但是可以有任意多的session。在这个例子中,
* Session对象需要知道用来处理邮件的SMTP 服务器。
*/
public boolean createMimeMessage() {
try {
System.out.println("准备获取邮件会话对象！");
// 用props对象来创建并初始化session对象
session = Session.getDefaultInstance(props, null);
} catch (Exception e) {
System.err.println("获取邮件会话对象时发生错误！" + e);
return false;
}
System.out.println("准备创建MIME邮件对象！");
try {
// 用session对象来创建并初始化邮件对象
mimeMsg = new MimeMessage(session);
// 生成附件组件的实例
mp = new MimeMultipart();
} catch (Exception e) {
System.err.println("创建MIME邮件对象失败！" + e);
return false;
}
return true;
}
/**
* 设置SMTP的身份认证
*/
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");
}
/**
* 进行用户身份验证时，设置用户名和密码
*/
public void setNamePass(String name, String pass) {
System.out.println("程序得到用户名与密码");
username = name;
password = pass;
}
/**
* 设置邮件主题
*
* @param mailSubject
* @return
*/
public boolean setSubject(String mailSubject) {
System.out.println("设置邮件主题！");
try {
mimeMsg.setSubject(mailSubject);
} catch (Exception e) {
System.err.println("设置邮件主题发生错误！");
return false;
}
return true;
}
/**
* 设置邮件内容,并设置其为文本格式或HTML文件格式，编码方式为UTF-8
*
* @param mailBody
* @return
*/
public boolean setBody(String mailBody) {
try {
System.out.println("设置邮件体格式");
BodyPart bp = new MimeBodyPart();
bp.setContent(
"<meta http-equiv=Content-Type content=text/html; charset=UTF-8>"
+ mailBody, "text/html;charset=UTF-8");
// 在组件上添加邮件文本
mp.addBodyPart(bp);
} catch (Exception e) {
System.err.println("设置邮件正文时发生错误！" + e);
return false;
}
return true;
}
/**
* 增加发送附件
*
* @param filename
* 邮件附件的地址，只能是本机地址而不能是网络地址，否则抛出异常
* @return
*/
public boolean addFileAffix(String filename) {
System.out.println("增加邮件附件：" + filename);
try {
BodyPart bp = new MimeBodyPart();
FileDataSource fileds = new FileDataSource(filename);
bp.setDataHandler(new DataHandler(fileds));
// 发送的附件前加上一个用户名的前缀
bp.setFileName(fileds.getName());
// 添加附件
mp.addBodyPart(bp);
} catch (Exception e) {
System.err.println("增加邮件附件：" + filename + "发生错误！" + e);
return false;
}
return true;
}
/**
* 设置发件人地址
*
* @param from
* 发件人地址
* @return
*/
public boolean setFrom(String from) {
System.out.println("设置发信人！");
try {
mimeMsg.setFrom(new InternetAddress(from));
} catch (Exception e) {
return false;
}
return true;
}
/**
* 设置收件人地址
*
* @param to
* 收件人的地址
* @return
*/
public boolean setTo(String to) {
System.out.println("设置收信人");
if (to == null)
return false;
try {
mimeMsg.setRecipients(javax.mail.Message.RecipientType.TO,
InternetAddress.parse(to));
} catch (Exception e) {
return false;
}
return true;
}
/**
* 发送附件
*
* @param copyto
* @return
*/
public boolean setCopyTo(String copyto) {
System.out.println("发送附件到");
if (copyto == null)
return false;
try {
mimeMsg.setRecipients(javax.mail.Message.RecipientType.CC,
InternetAddress.parse(copyto));
} catch (Exception e) {
return false;
}
return true;
}
/**
* 发送邮件
*
* @return
*/
public boolean sendout() {
try {
mimeMsg.setContent(mp);
mimeMsg.saveChanges();
System.out.println("正在发送邮件....");
Session mailSession = Session.getInstance(props, null);
Transport transport = mailSession.getTransport("smtp");
// 真正的连接邮件服务器并进行身份验证
transport.connect((String) props.get("mail.smtp.host"), username,
password);
// 发送邮件
transport.sendMessage(mimeMsg,
mimeMsg.getRecipients(javax.mail.Message.RecipientType.TO));
System.out.println("发送邮件成功！");
transport.close();
} catch (Exception e) {
System.err.println("邮件发送失败！" + e.getMessage());
e.printStackTrace();
return false;
}
return true;
}
public static void main(String[] args) {
/**
*
************* 切切注意********
*
* 注意用此程序发邮件必须邮箱支持smtp服务在2006年以后申请的163邮箱是不支持的我知道sina邮箱 sohu邮箱 qq邮箱支持
* 但是sina和qq邮箱需要手工设置开启此功能所以在测试时最好使用这三个邮箱 sina邮箱的smtp设置方法如下登录sina邮箱
* 依次点击邮箱设置--->帐户--->POP/SMTP设置将开启复选框选中然后保存
*
************* 切切注意********
*/
Email themail = new Email("smtp.sina.com");// 这里以新浪邮箱为例子
String mailbody = "hello!!!"; // 邮件内容
themail.setNeedAuth(true);
themail.setSubject("JAVA发邮件的测试");// 邮件主题
themail.setBody(mailbody);// 邮件正文
themail.setTo("****@qq.com");// 收件人地址
themail.setFrom("tjwkj@sina.com");// 发件人地址
themail.addFileAffix("d:\\temp\\aop.docx");// 附件文件路径,例如：C:/222.jpg,*注；"/"的写法；
// 如果没有可以不写
themail.setNamePass("****@sina.com", "****");// 发件人地址和密码
// **改为相应邮箱密码
themail.sendout();
}
}

本文转自 tianya23 51CTO博客，原文链接：http://blog.51cto.com/tianya23/408390，如需转载请自行联系原作者