Spring MVC发送邮件
Spring发送html邮件一文件阐述了使用Spring发送html邮件的方法，根据该文，作者写了一个综合的发送邮件的工具类MailUtil，如下所示：
/**
*
* @author geloin
* @date 2012-5-8 上午11:02:41
*/
package com.embest.ruisystem.util;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import javax.mail.Session;
import javax.mail.internet.MimeMessage;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
/**
*
* @author geloin
* @date 2012-5-8 上午11:02:41
*/
public class MailUtil {
/**
* 发件人邮箱服务器
*/
private String emailHost;
/**
* 发件人邮箱
*/
private String emailFrom;
/**
* 发件人用户名
*/
private String emailUserName;
/**
* 发件人密码
*/
private String emailPassword;
/**
* 收件人邮箱，多个邮箱以“;”分隔
*/
private String toEmails;
/**
* 邮件主题
*/
private String subject;
/**
* 邮件内容
*/
private String content;
/**
* 邮件中的图片，为空时无图片。map中的key为图片ID，value为图片地址
*/
private Map<String, String> pictures;
/**
* 邮件中的附件，为空时无附件。map中的key为附件ID，value为附件地址
*/
private Map<String, String> attachments;
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @return the emailHost
*/
public String getEmailHost() {
emailHost = DataUtil.objToStr(emailHost);
if (emailHost.equals("")) {
emailHost = Constants.emailHost;
}
return emailHost;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @param emailHost
* the emailHost to set
*/
public void setEmailHost(String emailHost) {
this.emailHost = emailHost;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @return the emailFrom
*/
public String getEmailFrom() {
emailFrom = DataUtil.objToStr(emailFrom);
if (emailFrom.equals("")) {
emailFrom = Constants.emailFrom;
}
return emailFrom;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @param emailFrom
* the emailFrom to set
*/
public void setEmailFrom(String emailFrom) {
this.emailFrom = emailFrom;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @return the emailUserName
*/
public String getEmailUserName() {
emailUserName = DataUtil.objToStr(emailUserName);
if (emailUserName.equals("")) {
emailUserName = Constants.emailUsername;
}
return emailUserName;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @param emailUserName
* the emailUserName to set
*/
public void setEmailUserName(String emailUserName) {
this.emailUserName = emailUserName;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @return the emailPassword
*/
public String getEmailPassword() {
emailPassword = DataUtil.objToStr(emailPassword);
if (emailPassword.equals("")) {
emailPassword = Constants.emailPassword;
}
return emailPassword;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @param emailPassword
* the emailPassword to set
*/
public void setEmailPassword(String emailPassword) {
this.emailPassword = emailPassword;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @return the toEmails
*/
public String getToEmails() {
return DataUtil.objToStr(toEmails);
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @param toEmails
* the toEmails to set
*/
public void setToEmails(String toEmails) {
this.toEmails = toEmails;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @return the subject
*/
public String getSubject() {
subject = DataUtil.objToStr(subject);
if (subject.equals("")) {
subject = "无主题";
}
return DataUtil.objToStr(subject);
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @param subject
* the subject to set
*/
public void setSubject(String subject) {
this.subject = subject;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @return the content
*/
public String getContent() {
return DataUtil.objToStr(content);
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @param content
* the content to set
*/
public void setContent(String content) {
this.content = content;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @return the pictures
*/
public Map<String, String> getPictures() {
return pictures;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @param pictures
* the pictures to set
*/
public void setPictures(Map<String, String> pictures) {
this.pictures = pictures;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @return the attachments
*/
public Map<String, String> getAttachments() {
return attachments;
}
/**
*
* @author geloin
* @date 2012-5-9 上午10:49:01
* @param attachments
* the attachments to set
*/
public void setAttachments(Map<String, String> attachments) {
this.attachments = attachments;
}
/**
* 发送邮件
*
* @author geloin
* @date 2012-5-9 上午11:18:21
* @throws Exception
*/
public void sendEmail() throws Exception {
if (this.getEmailHost().equals("") || this.getEmailFrom().equals("")
|| this.getEmailUserName().equals("")
|| this.getEmailPassword().equals("")) {
throw new RuntimeException("发件人信息不完全，请确认发件人信息！");
}
JavaMailSenderImpl senderImpl = new JavaMailSenderImpl();
// 设定mail server
senderImpl.setHost(emailHost);
// 建立邮件消息
MimeMessage mailMessage = senderImpl.createMimeMessage();
MimeMessageHelper messageHelper = null;
messageHelper = new MimeMessageHelper(mailMessage, true, "UTF-8");
// 设置发件人邮箱
messageHelper.setFrom(emailFrom);
// 设置收件人邮箱
String[] toEmailArray = toEmails.split(";");
List<String> toEmailList = new ArrayList<String>();
if (null == toEmailArray || toEmailArray.length <= 0) {
throw new RuntimeException("收件人邮箱不得为空！");
} else {
for (String s : toEmailArray) {
s = DataUtil.objToStr(s);
if (!s.equals("")) {
toEmailList.add(s);
}
}
if (null == toEmailList || toEmailList.size() <= 0) {
throw new RuntimeException("收件人邮箱不得为空！");
} else {
toEmailArray = new String[toEmailList.size()];
for (int i = 0; i < toEmailList.size(); i++) {
toEmailArray[i] = toEmailList.get(i);
}
}
}
messageHelper.setTo(toEmailArray);
// 邮件主题
messageHelper.setSubject(subject);
// true 表示启动HTML格式的邮件
messageHelper.setText(content, true);
// 添加图片
if (null != pictures) {
for (Iterator<Map.Entry<String, String>> it = pictures.entrySet()
.iterator(); it.hasNext();) {
Map.Entry<String, String> entry = it.next();
String cid = entry.getKey();
String filePath = entry.getValue();
if (null == cid || null == filePath) {
throw new RuntimeException("请确认每张图片的ID和图片地址是否齐全！");
}
File file = new File(filePath);
if (!file.exists()) {
throw new RuntimeException("图片" + filePath + "不存在！");
}
FileSystemResource img = new FileSystemResource(file);
messageHelper.addInline(cid, img);
}
}
// 添加附件
if (null != attachments) {
for (Iterator<Map.Entry<String, String>> it = attachments
.entrySet().iterator(); it.hasNext();) {
Map.Entry<String, String> entry = it.next();
String cid = entry.getKey();
String filePath = entry.getValue();
if (null == cid || null == filePath) {
throw new RuntimeException("请确认每个附件的ID和地址是否齐全！");
}
File file = new File(filePath);
if (!file.exists()) {
throw new RuntimeException("附件" + filePath + "不存在！");
}
FileSystemResource fileResource = new FileSystemResource(file);
messageHelper.addAttachment(cid, fileResource);
}
}
Properties prop = new Properties();
prop.put("mail.smtp.auth", "true"); // 将这个参数设为true，让服务器进行认证,认证用户名和密码是否正确
prop.put("mail.smtp.timeout", "25000");
// 添加验证
MyAuthenticator auth = new MyAuthenticator(emailUserName, emailPassword);
Session session = Session.getDefaultInstance(prop, auth);
senderImpl.setSession(session);
// 发送邮件
senderImpl.send(mailMessage);
}
public static void main(String[] args) throws Exception {
MailUtil mu = new MailUtil();
// test1(mu);
// test2(mu);
// test3(mu);
// test4(mu);
// test5(mu);
test6(mu);
}
public static void test1(MailUtil mu) throws Exception {
String toEmails = "[email protected]";
String subject = "第一封，简单文本邮件";
StringBuilder builder = new StringBuilder();
builder.append("我相信天上不会掉馅饼");
String content = builder.toString();
mu.setToEmails(toEmails);
mu.setSubject(subject);
mu.setContent(content);
mu.sendEmail();
}
public static void test2(MailUtil mu) throws Exception {
String toEmails = "[email protected]";
String subject = "第二封，HTML邮件";
StringBuilder builder = new StringBuilder();
builder.append("<html><body>老婆：<br />我是你的老公吗？<br />是的，是很久了。<br /></body></html>");
String content = builder.toString();
mu.setToEmails(toEmails);
mu.setSubject(subject);
mu.setContent(content);
mu.sendEmail();
}
public static void test3(MailUtil mu) throws Exception {
String toEmails = "[email protected]";
String subject = "第三封，图片邮件";
Map<String, String> pictures = new HashMap<String, String>();
pictures.put("d1", "D:/work/download/d1.jpg");
pictures.put("d2", "D:/work/download/测试图片2.jpg");
pictures.put("d3", "D:/work/download/d3.jpg");
StringBuilder builder = new StringBuilder();
builder.append("<html><body>看看下面的图，你会知道花儿为什么是这样红的：<br />");
builder.append("<img src=\"cid:d1\" /><br />");
builder.append("<img src=\"cid:d2\" /><br />");
builder.append("<img src=\"cid:d3\" /><br />");
builder.append("</body></html>");
String content = builder.toString();
mu.setToEmails(toEmails);
mu.setSubject(subject);
mu.setContent(content);
mu.setPictures(pictures);
mu.sendEmail();
}
public static void test4(MailUtil mu) throws Exception {
String toEmails = "[email protected]";
String subject = "第四封，附件邮件";
Map<String, String> attachments = new HashMap<String, String>();
attachments.put("d1.jar", "D:/work/download/activation.jar");
attachments.put("d2.doc",
"C:/Documents and Settings/Administrator/桌面/Java设计模式.doc");
StringBuilder builder = new StringBuilder();
builder.append("<html><body>看看附件中的资料，你会知道世界为什么是平的。</body></html>");
String content = builder.toString();
mu.setToEmails(toEmails);
mu.setSubject(subject);
mu.setContent(content);
mu.setAttachments(attachments);
mu.sendEmail();
}
public static void test5(MailUtil mu) throws Exception {
String toEmails = "[email protected]";
String subject = "第五封，综合邮件";
Map<String, String> attachments = new HashMap<String, String>();
attachments.put("d1.jar", "D:/work/download/activation.jar");
attachments.put("d2.doc",
"C:/Documents and Settings/Administrator/桌面/Java设计模式.doc");
Map<String, String> pictures = new HashMap<String, String>();
pictures.put("d1", "D:/work/download/d1.jpg");
pictures.put("d2", "D:/work/download/测试图片2.jpg");
pictures.put("d3", "D:/work/download/d3.jpg");
StringBuilder builder = new StringBuilder();
builder.append("<html><body>看看附件中的资料，你会知道世界为什么是平的。<br />");
builder.append("看看下面的图，你会知道花儿为什么是这样红的：<br />");
builder.append("<img src=\"cid:d1\" /><br />");
builder.append("<img src=\"cid:d2\" /><br />");
builder.append("<img src=\"cid:d3\" /><br />");
builder.append("</body></html>");
String content = builder.toString();
mu.setToEmails(toEmails);
mu.setSubject(subject);
mu.setContent(content);
mu.setPictures(pictures);
mu.setAttachments(attachments);
mu.sendEmail();
}
public static void test6(MailUtil mu) throws Exception {
String toEmails = "[email protected];[email protected]";
String subject = "第五封，群发邮件";
Map<String, String> attachments = new HashMap<String, String>();
attachments.put("d1.jar", "D:/work/download/activation.jar");
attachments.put("d2.doc",
"C:/Documents and Settings/Administrator/桌面/Java设计模式.doc");
Map<String, String> pictures = new HashMap<String, String>();
pictures.put("d1", "D:/work/download/d1.jpg");
pictures.put("d2", "D:/work/download/测试图片2.jpg");
pictures.put("d3", "D:/work/download/d3.jpg");
StringBuilder builder = new StringBuilder();
builder.append("<html><body>看看附件中的资料，你会知道世界为什么是平的。<br />");
builder.append("看看下面的图，你会知道花儿为什么是这样红的：<br />");
builder.append("<img src=\"cid:d1\" /><br />");
builder.append("<img src=\"cid:d2\" /><br />");
builder.append("<img src=\"cid:d3\" /><br />");
builder.append("</body></html>");
String content = builder.toString();
mu.setToEmails(toEmails);
mu.setSubject(subject);
mu.setContent(content);
mu.setPictures(pictures);
mu.setAttachments(attachments);
mu.sendEmail();
}
}
上文的sendEmail方法即为发送邮件的主要方法，test1-test6分别是各种邮件的示例。
上文中的MyAuthenticator辅助类为发件人信息验证类，该类代码如下所示：
/**
*
* @author geloin
* @date 2012-5-8 下午2:48:25
*/
package com.embest.ruisystem.util;
import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;
/**
*
* @author geloin
* @date 2012-5-8 下午2:48:25
*/
public class MyAuthenticator extends Authenticator {
private String username;
private String password;
/**
*
* @author geloin
* @date 2012-5-8 下午2:48:53
* @param username
* @param password
*/
public MyAuthenticator(String username, String password) {
super();
this.username = username;
this.password = password;
}
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
}
MailUtil中的Constants是作者自定义的一个工具类，该类的主要作用是从配置文件中获取发件人信息，包括发件人服务器、发件人邮箱、发件人账户和密码等。
DataUtil.objToStr(String str)方法的主要作用是判断str是否为null或空字符串，若是，则返回空字符串，否则返回str.trim()。