利用Java发送邮件（含附件）的例子

疯狂的IT人站长整理的：利用Java发送邮件（含附件）的例子：

1、邮件发送的配置propertity文件内容如下：（utils.properties文件放在src下面）

emailsmtp=smtp.qq.com
emailaddress=459104018@qq.com
emailpass=******

2、读取配置文件的类文件（ReadPropertity.java）

import java.io.IOException;
import java.util.Properties;
public class ReadPropertity {
static Properties props = new Properties();
static {
try {
props.load(ReadPropertity.class.getClassLoader().getResourceAsStream(
"utils.properties"));
} catch (IOException e1) {
e1.printStackTrace();
}
}
public static String getProperty(String key) {
return props.getProperty(key);
}
}

 

3、邮件处理类（EmailHandle.java）

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
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;
import javax.mail.internet.MimeUtility;
/**

* 本程序用java来实现Email的发送， 所用到的协议为：smtp
* <p>Company:  疯狂的IT人</p>
* time:2013-04-05
* @author www.crazyiter.com
* @date
* @version 1.0
*/
public class EmailHandle {

private MimeMessage mimeMsg; //邮件对象

private Session session; //发送邮件的Session会话

private Properties props;//邮件发送时的一些配置信息的一个属性对象

private String sendUserName; //发件人的用户名

private String sendUserPass; //发件人密码

private Multipart mp;//附件添加的组件

private List files = new LinkedList();//存放附件文件

public EmailHandle(String smtp) {
sendUserName = "";
sendUserPass = "";
setSmtpHost(smtp);// 设置邮件服务器
createMimeMessage(); // 创建邮件
}

public void setSmtpHost(String hostName) {
if (props == null)
props = System.getProperties();
props.put("mail.smtp.host", hostName);
}

public boolean createMimeMessage(){
try {
// 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;
}
try {
mimeMsg = new MimeMessage(session);  // 用session对象来创建并初始化邮件对象
mp = new MimeMultipart();// 生成附件组件的实例
} catch (Exception e) {
return false;
}
return true;
}
/**
* 设置SMTP的身份认证
*/
public void setNeedAuth(boolean 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) {
sendUserName = name;
sendUserPass = pass;
}
/**
* 设置邮件主题
* @param mailSubject
* @return
*/
public boolean setSubject(String mailSubject) {
try {
mimeMsg.setSubject(mailSubject);
} catch (Exception e) {
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 {
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) {
try {
BodyPart bp = new MimeBodyPart();
FileDataSource fileds = new FileDataSource(filename);
bp.setDataHandler(new DataHandler(fileds));
bp.setFileName(MimeUtility.encodeText(fileds.getName(),"utf-8",null));  // 解决附件名称乱码
mp.addBodyPart(bp);// 添加附件
files.add(fileds);
} catch (Exception e) {
System.err.println("增加邮件附件：" + filename + "发生错误！" + e);
return false;
}
return true;
}
public boolean delFileAffix(){
try {
FileDataSource fileds = null;
for(Iterator it =  files.iterator() ;it.hasNext();) {
fileds = (FileDataSource)it.next();
if(fileds != null && fileds.getFile() != null){
fileds.getFile().delete();
}
}
}catch (Exception 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) {
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) {
if (to == null)
return false;
try {
mimeMsg.setRecipients(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) {
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 sendEmail() throws Exception{
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");
// 连接邮件服务器并进行身份验证
transport.connect((String) props.get("mail.smtp.host"), sendUserName,sendUserPass);
// 发送邮件
transport.sendMessage(mimeMsg, mimeMsg.getRecipients(Message.RecipientType.TO));
System.out.println("发送邮件成功！");
transport.close();
return true;
}
}

4、邮件发送的类文件（SendEmail.java）

/**
* 发送邮件测试
* <p>Company:  疯狂的IT人</p>
* time:2013-04-05
* @author www.crazyiter.com
* @date
* @version 1.0
*/

public class SendEmail {
public SendEmail() {
}
/***以后需要两个参数：接收方地址 、 内容***/
public static void send(String subject, String toaddress,String content)throws Exception {

String hostName = ReadPropertity.getProperty("emailsmtp");
String fromAddress = ReadPropertity.getProperty("emailaddress");
String fromAPass = ReadPropertity.getProperty("emailpass");

EmailHandle emailHandle = new EmailHandle(hostName);
emailHandle.setFrom(fromAddress);

4000
emailHandle.setNeedAuth(true);
emailHandle.setSubject(subject);
emailHandle.setBody(content);
emailHandle.setTo(toaddress);
emailHandle.setFrom(fromAddress);
emailHandle.addFileAffix("D:/myself/help/txt/java环境变量.txt");// 附件文件路径
emailHandle.setNamePass(fromAddress, fromAPass);
emailHandle.sendEmail();
}
public static void main(String[] args) {
try {
SendEmail.send("带附件的邮件测试","459104018@qq.com","测试内容<a href='http://www.crazyiter.com'>疯狂的IT人</a>");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

5、发送邮件需要的jar包：activation.jarmail-plugin.jarmail.jar
 本文转载自疯狂的IT人：http://www.crazyiter.com/bbs/forum.php?mod=viewthread&tid=1140&extra=page%3D1