下面代码是利用Java mail包封装了一个发送邮件的类
import java.io.File;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
public class SendMail {
private static final String MAIL_ADDRESS_REGEX = "^[\\w\\.=-]+@[\\w\\.-]+\\.[\\w]{2,3}$";
private String mailServer;
private String sender;
private String[] receiver;
public SendMail(){
}
public void setMailBasicInfo(String mailServer,String sender,String receiver){
this.mailServer = mailServer;
this.sender = sender;
this.receiver =receiver.split(",");
}
public void setMailBasicInfo(String mailServer,String sender,String[] users){
this.mailServer = mailServer;
this.sender = sender;
this.receiver = users;
}
public void setMailBasicInfo(String mailServer,String sender,List users){
this.mailServer = mailServer;
this.sender = sender;
this.receiver = new String[users.size()];
users.toArray(this.receiver);
}
public boolean send(String subject, String content, List fileNames)
{
subject = subject==null?"":subject;
content = content==null?"":content;
Properties props = new Properties();
props.put("mail.smtp.host", mailServer);
Session session = Session.getInstance(props, null);
try
{
InternetAddress[] receiver = getReceiverList();
if (receiver.length == 0)
{
System.out.println("receiver is null");
return false;
}
MimeMessage msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(sender));
msg.setRecipients(Message.RecipientType.TO, receiver);
msg.setSubject(subject);
msg.setSentDate(new Date());
Multipart container = new MimeMultipart();
MimeBodyPart textBodyPart = new MimeBodyPart();
textBodyPart.setContent(content.toString(), "text/html;charset=gbk");
container.addBodyPart(textBodyPart);
doAttachFile(container,fileNames);
msg.setContent(container);
System.out.println("begin send mail");
Transport.send(msg);
System.out.println("send mail success");
}
catch (MessagingException e)
{
System.out.println("send mail fail");
System.out.println(e);
return false;
}
catch(Exception e){
return false;
}
return true;
}
public boolean send(String subject, String content){
return send(subject,content,null);
}
public boolean send(String subject){
return send(subject,null);
}
private void doAttachFile(Multipart container, List fileNames) throws MessagingException{
if(fileNames==null || fileNames.size()==0)
return;
for(String filename:fileNames){
File f = new File(filename);
if(!f.isFile())
continue;
System.out.println("the attach file is:"+filename);
MimeBodyPart fileBodyPart = new MimeBodyPart();
FileDataSource fds = new FileDataSource(f);// 要发送的附件地址
fileBodyPart.setDataHandler(new DataHandler(fds));
fileBodyPart.setFileName(fds.getName());// 设置附件的名称
container.addBodyPart(fileBodyPart);
}
}
private InternetAddress[] getReceiverList() throws AddressException
{
ArrayList toList = new ArrayList();
for (int i = 0; i < receiver.length; ++i)
{
if (receiver[i].matches(MAIL_ADDRESS_REGEX))
{
toList.add(new InternetAddress(receiver[i]));
}
}
return (InternetAddress[]) toList.toArray(new InternetAddress[toList.size()]);
}
}
使用举例
String host = "168.xx.xx.xx"; //邮件服务器的地址 String subject = "发送邮件的主题"; String sender = "[email protected]"; Listreceivers = new ArrayList (); receivers.add("[email protected]"); receivers.add("[email protected]"); String content = "邮件主题"; SendMail sendMail = new SendMail(); sendMail.setMailBasicInfo(host, sender, receivers); sendMail.send(subject, content, null); //没有附件
正文也可以是html内容，如
String content = "详细信息：请点击查看！";
我们再来看一个封装好的类
package com.message.base.email; import com.message.base.spring.ApplicationHelper; import com.message.base.utils.StringUtils; import com.message.base.utils.ValidateUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.mail.*; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import java.util.Collections; import java.util.Date; import java.util.List; import java.util.Properties; /** * 发送邮件服务器. * * @author sunhao([email protected]) * @version V1.0, 13-3-25 上午6:19 */ public class EmailServer { private static final Logger logger = LoggerFactory.getLogger(EmailServer.class); //spring中配置 /**邮箱服务器配置**/ private Listconfig; /**是否开启debug调试模式**/ private boolean isDebug = false; /**是否启用身份验证**/ private boolean isAuth = true; /**验证类型**/ private String authType = "auth"; /** * 私有化默认构造器,使外部不可实例化 */ private EmailServer(){} /** * 单例,保证上下文中只有一个EmailServer * * @return EmailServer */ public static EmailServer getInstance(){ return ApplicationHelper.getInstance().getBean(EmailServer.class); } /** * 发送普通邮件(单个接收人) * * @param username 发件人用户名 * @param password 发件人密码 * @param title 邮件标题 * @param content 邮件正文 * @param receiver 单个接收人 * @return */ public boolean sendTextMail(String username, String password, String title, String content, String receiver){ return this.sendTextMail(username, password, title, content, Collections.singletonList(receiver)); } /** * 发送普通邮件(多个接收人) * * @param username 发件人用户名 * @param password 发件人密码 * @param title 邮件标题 * @param content 邮件正文 * @param receivers 多个接收人 * @return */ public boolean sendTextMail(String username, String password, String title, String content, List receivers){ Authentication auth = null; if(this.isAuth()){ //如果需要身份认证，则创建一个密码验证器 auth = new Authentication(username, password); } Properties props = new Properties(); props.setProperty("mail.smtp.auth", this.isAuth() ? "true" : "false"); props.setProperty("mail.transport.protocol", "auth"); EmailConfig config = this.getEmailConfig(username); props.setProperty("mail.smtp.host", config.getSmtp()); props.setProperty("mail.smtp.port", config.getPort() + ""); // 根据邮件会话属性和密码验证器构造一个发送邮件的session Session session = Session.getDefaultInstance(props, auth); session.setDebug(this.isDebug); Message message = this.makeTextMail(session, title, content, username, receivers, false); try { Transport.send(message); return true; } catch (MessagingException e) { logger.error(e.getMessage(), e); return false; } } /** * 发送HTML邮件(单个接收人) * * @param username 发件人用户名 * @param password 发件人密码 * @param title 邮件标题 * @param content 邮件正文 * @param receiver 单个接收人 * @return */ public boolean sendHtmlMail(String username, String password, String title, String content, String receiver){ return this.sendHtmlMail(username, password, title, content, Collections.singletonList(receiver)); } /** * 发送HTML邮件(多个接收人) * * @param username 发件人用户名 * @param password 发件人密码 * @param title 邮件标题 * @param content 邮件正文 * @param receivers 多个接收人 * @return */ public boolean sendHtmlMail(String username, String password, String title, String content, List receivers){ Authentication auth = null; if(this.isAuth()){ //如果需要身份认证，则创建一个密码验证器 auth = new Authentication(username, password); } Properties props = new Properties(); props.setProperty("mail.smtp.auth", this.isAuth() ? "true" : "false"); props.setProperty("mail.transport.protocol", "auth"); EmailConfig config = this.getEmailConfig(username); props.setProperty("mail.smtp.host", config.getSmtp()); props.setProperty("mail.smtp.port", config.getPort() + ""); // 根据邮件会话属性和密码验证器构造一个发送邮件的session Session session = Session.getDefaultInstance(props, auth); session.setDebug(this.isDebug); Message message = this.makeTextMail(session, title, content, username, receivers, true); try { Transport.send(message); return true; } catch (MessagingException e) { logger.error(e.getMessage(), e); return false; } } /** * 获取邮件服务器配置 * * @param email 邮箱地址 * @return */ private EmailConfig getEmailConfig(String email){ String mailServiceDomainName = this.getMailServiceDomainName(email); for(EmailConfig config : this.config) { if(config.getName().equals(mailServiceDomainName)){ return config; } } return null; } /** * 创建邮件message * * @param session 根据配置获得的session * @param title 邮件主题 * @param content 邮件的内容 * @param from 发件者 * @param receivers 收件者 * @param isHtmlMail 是否是html邮件 */ private Message makeTextMail(Session session, String title, String content, String from, List receivers, boolean isHtmlMail){ Message message = new MimeMessage(session); try { /**标题**/ logger.info("this mail's title is {}", title); message.setSubject(title); /**内容**/ logger.info("this mail's content is {}", content); if(isHtmlMail){ //是html邮件 message.setContent(content, "text/html;charset=utf-8"); } else { //普通邮件 message.setText(content); } /**发件者地址**/ logger.info("this mail's sender is {}", from); Address fromAddress = new InternetAddress(from); message.setFrom(fromAddress); /**接收者地址**/ Address[] tos = new InternetAddress[receivers.size()]; for(int i = 0; i < receivers.size(); i++){ String receiver = receivers.get(i); if(ValidateUtils.isEmail(receiver)){ tos[i] = new InternetAddress(receiver); } } /**发件时间**/ message.setSentDate(new Date()); message.setRecipients(Message.RecipientType.TO, tos); } catch (MessagingException e) { logger.error(e.getMessage(), e); e.printStackTrace(); } return message; } /** * 获取邮箱域名 * * @param email 邮箱 * @return */ private String getMailServiceDomainName(String email){ if(StringUtils.isEmpty(email)){ return ""; } else { int firstIndex = StringUtils.indexOf(email, "@"); int secondIndex = StringUtils.lastIndexOf(email, "."); return StringUtils.substring(email, firstIndex + 1, secondIndex); } } public List getConfig() { return config; } public void setConfig(List config) { this.config = config; } public boolean isDebug() { return isDebug; } public void setDebug(boolean debug) { isDebug = debug; } public boolean isAuth() { return isAuth; } public void setAuth(boolean auth) { isAuth = auth; } public String getAuthType() { return authType; } public void setAuthType(String authType) { this.authType = authType; } }
调用方式如下
public boolean sendMail() throws Exception {
List receivers = new ArrayList();
receivers.add("[email protected]");
receivers.add("[email protected]");
EmailServer.getInstance().sendHtmlMail("[email protected]", "这里是密码", "测试发送HTML邮件",
"测试发送HTML邮件链接到百度", receivers);
return EmailServer.getInstance().sendTextMail("[email protected]", "这里是密码", "测试发送文本邮件",
"测试发送文本邮件测试发送文本邮件测试发送文本邮件", receivers);
}
PS:正在考虑扩展,如果把这几个类封在jar包中,如何进行邮件服务器配置的扩展.
如有不好之处,欢迎拍砖.