javaMail实现邮件发送

平常我们在做登陆注册的时候需要需要对邮箱进行验证，向邮箱发送验证信息。下面是我在做注册的时候向邮箱发送验证码代码。

邮箱校验正则

邮箱匹配规则：boolean mflag = mail.matches("^\\s*\\w+(?:\\.{0,1}[\\w-]+)*@[a-zA-Z0-9]+(?:[-.][a-zA-Z0-9]+)*\\.[a-zA-Z]+\\s*$");

邮箱发送入口

if(!mflag){
result.setCode("-1");
result.setMessage("邮箱格式验证不正确");
}else {
//获取随机的六位数字 用于发送验证码
String identifyingCode = SendEmailUtils.generatePassword();

//拼装邮件内容 发送邮件的具体内容
String emailContent = getEmailContent4RegEmail(identifyingCode);

//将验证码放入缓存服务器中memcache
MemcacheUtil.set(mail, 30, identifyingCode);

//邮件服务器地址 从配置文件中读取邮件服务器地址
String mailHost = SendEmailUtils.getPropValue("mail.smtp.host");

//发送人邮箱 <span style="font-family: Arial, Helvetica, sans-serif;">从配置文件中读取发送人邮箱</span>
String mailEmail = SendEmailUtils.getPropValue("mail.smtp.email");

//邮箱用户名 从配置文件中读取发送人邮箱用户名
String mailUser = SendEmailUtils.getPropValue("mail.smtp.user");

//邮箱密码 从配置文件中读取发送人邮箱密码
String mailPassword = SendEmailUtils.getPropValue("mail.smtp.password");

//邮件主题
String title = "****邮箱注册";

//发送邮箱 参数包括 发送目的地邮箱 发送人邮箱 邮件主题 邮件内容 邮件服务器 发送人邮箱用户名 发送人邮箱密码 是否是html格式
new SendEmailUtils().send(mail, mailEmail, title, emailContent,
mailHost, mailUser, mailPassword, true);

Map<String, String> reMap = new HashMap<String, String>();

reMap.put("sendCode", identifyingCode);

result.setData(reMap);
result.setCode("1");
result.setMessage("发送成功");
}


拼装邮件内容（html格式的）

private String getEmailContent4RegEmail(String identifyingCode) {
StringBuilder emailContent = new StringBuilder()
.append("您在***进行邮箱注册操作的验证码为：<span style=\"color: #F3750F;font-weight: bold;font-size: larger;font-family: cursive;\">")
.append(identifyingCode).append("</span><br/>")
.append("此验证码只能使用一次，验证成功自动失效；<br/>")
.append("<div style=\"font-size: small;color: gray;\">")
.append("(请在10分钟内完成验证，10分钟后验证码失效，您需要重新进行验证。感谢您对***的支持。)<br/>")
.append("如果您错误的收到了本电子邮件，请您忽略上述内容<br/>").append("</div>");
return emailContent.toString();
}

发送邮件工具类

import java.io.InputStream;
import java.util.Date;
import java.util.Properties;
import java.util.Random;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

import org.apache.log4j.Logger;

public class SendEmailUtils {
/** 邮件随机数 */
public static Random random = new Random();
//邮箱服务器
public static String MAILHOST="";
public static String MAILEMAIL="";
public static String MAILUSER="";
public static String MAILPASSWORD="";
public static String MAILADDRESS="";

private static Properties prop = null;
static{
String path = "/com/conf/mail.properties";

InputStream in = SendEmailUtils.class.getResourceAsStream(path);
if ( in != null ){
prop = new Properties();
try{
prop.load(in);
MAILHOST = (String) prop.get("mail.smtp.host");
MAILEMAIL = (String) prop.get("mail.smtp.email");
MAILUSER=(String)prop.get("mail.smtp.user");
MAILPASSWORD=(String)prop.get("mail.smtp.password");
} catch (Exception e){
throw new RuntimeException(e);
}
}
}
public static String getPropValue(String key){
String path = "/com/conf/mail.properties";
String val = null;
InputStream in = SendEmailUtils.class.getResourceAsStream(path);
if ( in != null ){
prop = new Properties();
try{
prop.load(in);
val = prop.getProperty(key);
} catch (Exception e){
e.printStackTrace();
System.out.println("=====================get property file error!");
}
}
return val;
}

private static Logger logger = Logger.getLogger(SendEmailUtils.class);
//发送邮件相关
/**
* 生成密码（6位随机数字）
* @return String
* @author HuKaiXuan 2014-5-17 上午11:16:18
*/
public static String generatePassword(){
String number = "";
for(int i = 0; i < 6; i ++) {
number += random.nextInt(10);
}
return number;
}

public static void main(String[] args) {
String propValue = new SendEmailUtils().getPropValue("mail.smtp.host");
System.out.println(propValue);
/*Random random = new Random();
String password = random.nextInt() + "";
StringBuffer content = new StringBuffer();
content.append("您好！用户 Mr.Men ***** 在radio的密码为：" + password + "<br/>(该邮件为系统邮件，请勿回复，登录后请及时修改您的密码。)");

String mailHost = "smtp.163.com";// pu.getValue("mail.send.host");
String mailEmail = "***2010@163.com";// pu.getValue("mail.send.email");
String mailUser = "***2010";// pu.getValue("mail.send.user");
String mailPassword = "***";// pu.getValue("mail.send.password");
try {
new SendEmailUtils().send("****@qq.com", mailEmail, "密码重置", content.toString(), mailHost, mailUser, mailPassword, false);
System.out.println("Mail Send Success");
} catch (AddressException e) {
System.out.println("AddressException-------" + e.getMessage());
e.printStackTrace();
} catch (MessagingException e) {
System.out.println("MessagingException-------" + e.getMessage());
e.printStackTrace();
}*/
}

/***************************************************************************
* 邮件发送，带用户名和密码验证，测试通过
*
* @param to       发送目的地邮箱
* @param from     发送来源地邮箱
* @param title    邮箱主题
* @param content  邮箱内容
* @param smtpServer 邮箱服务器
* @param user       邮箱有户名
* @param password   邮箱密码
* @param isHTML     是否是Html
* @throws AddressException
* @throws MessagingException
*/
public void send(String to, String from, String title, String content,
String smtpServer, String user, String password, boolean isHTML)
throws AddressException, MessagingException {

Properties props = new Properties();
Authenticator auth = new MailAuthenticator(user, password);
Session sendMailSession;
Transport transport;
props.put("mail.smtp.host", smtpServer);
props.put("mail.smtp.auth", "true");
sendMailSession = Session.getInstance(props, auth);
Message newMessage = new MimeMessage(sendMailSession);
newMessage.setFrom(new InternetAddress(from));
newMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(
to));
newMessage.setSubject(title);
newMessage.setSentDate(new Date());
if (isHTML) {
newMessage.setContent(content, "text/html;charset=UTF-8");
} else {
newMessage.setText(content);
}
transport = sendMailSession.getTransport("smtp");
Transport.send(newMessage);
transport.close();
if (logger.isDebugEnabled()) {
logger.debug("---------- Mail Send Success ----------");
}
}

}
class MailAuthenticator extends Authenticator {
private String user;
private String password;

public MailAuthenticator() {

}

public MailAuthenticator(String user, String password) {
this.user = user;
this.password = password;
}

protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, password);
}

public String getMailServer(String email) {
String mailUrl = "/";
if (null != email) {
mailUrl = email.toLowerCase();
String email_array = email.substring(email.indexOf("@"));
if ("163.com".equals(email_array)) {// 163邮箱
mailUrl = "mail.163.com";
} else if ("vip.163.com".equals(email_array)) {// 163vip邮箱
mailUrl = "vip.163.com";
} else if ("sina.com".equals(email_array)) {// 新浪邮箱
mailUrl = "mail.sina.com.cn";
} else if ("sina.cn".equals(email_array)) {// 新浪邮箱
mailUrl = "mail.sina.com.cn";
} else if ("vip.sina.com".equals(email_array)) {// 新浪vip邮箱
mailUrl = "vip.sina.com.cn";
} else if ("2008.sina.com".equals(email_array)) {// 新浪2008邮箱
mailUrl = "mail.2008.sina.com.cn";
} else if ("sohu.com".equals(email_array)) {// 搜狐邮箱
mailUrl = "mail.sohu.com";
} else if ("vip.sohu.com".equals(email_array)) {// 搜狐vip邮箱
mailUrl = "vip.sohu.com";
} else if ("tom.com".equals(email_array)) {// Tom邮箱
mailUrl = "mail.tom.com";
} else if ("vip.sina.com".equals(email_array)) {// Tom vip 邮箱
mailUrl = "vip.tom.com";
} else if ("sogou.com".equals(email_array)) {// 搜狗邮箱
mailUrl = "mail.sogou.com";
} else if ("126.com".equals(email_array)) {// 126邮箱
mailUrl = "www.126.com";
} else if ("vip.126.com".equals(email_array)) {// 126 vip 邮箱
mailUrl = "vip.126.com";
} else if ("139.com".equals(email_array)) {// 139邮箱
mailUrl = "mail.10086.cn";
} else if ("gmail.com".equals(email_array)) {// gmail邮箱
mailUrl = "www.gmail.com";
} else if ("hotmail.com".equals(email_array)) {// 139邮箱
mailUrl = "login.live.com";
} else if ("189.cn".equals(email_array)) {// 电信邮箱
mailUrl = "webmail2.189.cn/webmail/";
} else if ("qq.com".equals(email_array)) {// qq邮箱
mailUrl = "mail.qq.com";
} else if ("yahoo.com".equals(email_array)) {// 雅虎邮箱
mailUrl = "mail.cn.yahoo.com";
} else if ("yahoo.cn".equals(email_array)) {// 雅虎邮箱
mailUrl = "mail.cn.yahoo.com";
} else if ("yahoo.com.cn".equals(email_array)) {// 雅虎邮箱
mailUrl = "mail.cn.yahoo.com";
} else if ("21cn.com".equals(email_array)) {// 21cn邮箱
mailUrl = "mail.21cn.com";
} else if ("eyou.com".equals(email_array)) {// eyou邮箱
mailUrl = "www.eyou.com";
} else if ("188.com".equals(email_array)) {// 188邮箱
mailUrl = "www.188.com";
} else if ("yeah.net".equals(email_array)) {// yeah邮箱
mailUrl = "www.yeah.net";
} else if ("foxmail.com".equals(email_array)) {// foxmail邮箱
mailUrl = "foxmail.com";
} else if ("wo.com.cn".equals(email_array)) {// 联通手机邮箱
mailUrl = "mail.wo.com.cn";
} else if ("263.net".equals(email_array)) {// 263邮箱
mailUrl = "www.263.net";
} else if ("x263.net".equals(email_array)) {// 263邮箱
mailUrl = "www.263.net";
} else if ("263.net.cn".equals(email_array)) {// 263邮箱
mailUrl = "www.263.net";
} else {
mailUrl = "mail." + (email.substring(email.indexOf("@") + 1));
}
}
return mailUrl;
}

}