整体效果：
发送端：网易邮箱；接收端：qq邮箱。
1.web前端
2.在网易邮箱“已发送”中可以看见通过java代码发送的邮件
3.同样在qq邮箱中也可以看到这样的效果
实现过程：
1.web前端（bootstrap布局）
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<form action="mailAction!sendMail" method="post" name="mailForm" id="mailFormId">
<ul class="list-group">
<li class="list-group-item">
<div class="input-group">
<span class="input-group-addon" id="basic-addon1">姓名:</span>
<input type="text" class="form-control" placeholder="your name" name="mailForm.name" aria-describedby="basic-addon1">
</div>
</li>
<li class="list-group-item">
<div class="input-group">
<span class="input-group-addon" id="basic-addon2">电话:</span>
<input type="text" class="form-control" placeholder="your phone" name="mailForm.phone" aria-describedby="basic-addon1">
</div>
</li>
<li class="list-group-item">
<div class="input-group">
<span class="input-group-addon" id="basic-addon2">邮件:</span>
<input type="text" class="form-control" placeholder="your e-mail" name="mailForm.e_mail" aria-describedby="basic-addon1">
</div>
</li>
<li class="list-group-item" style="padding-top: 20px;">
<span class="label label-default blog-label-1">消息:</span>
<br><br>
<textarea rows="10" style="width:100%" name="mailForm.content" placeholder="请输入消息（不要超过500个字符）"></textarea>
</li>
<li class="list-group-item">
<center><button onclick="$('#mailFormId').submit();" type="button" class="btn btn-success">发送邮件</button></center>
</li>
</ul>
</form>
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2.首先准备一个XML的模板（<xml-body>包含的是邮件的html格式的文本）。
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<?xml version="1.0" encoding="UTF-8"?>
<!-- 将空格换成全角的空格，就可以保证html不会将空格过滤掉 -->
<xml-body>
<html>
<head>
</head>
<body style="margin: 0; padding: 0;">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr>
<td style="padding: 10px 0 30px 0;">
<table align="center" border="0" cellpadding="0" cellspacing="0" width="600" style="border: 1px solid #cccccc; border-collapse: collapse;">
<tbody><tr>
<td align="center" bgcolor="#70bbd9" style="padding: 40px 0 30px 0; color: #153643; font-size: 28px; font-weight: bold; font-family: Arial, sans-serif;">
<img src="cid:{4}" alt="Creating Email Magic" width="300" height="230" style="display: block;"/>
</td>
</tr>
<tr>
<td bgcolor="#ffffff" style="padding: 40px 30px 40px 30px;">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr>
<td style="color: #153643; font-family: Arial, sans-serif; font-size: 24px;">
<b>
发件人: {0}
<br/>
电话: {1}
<br/>
邮箱: {2}
<br/>
内容:<br/>
</b>
</td>
</tr>
<tr>
<td style="padding: 20px 0 30px 0; color: #153643; font-family: Arial, sans-serif; font-size: 16px; line-height: 20px;">
{3}
</td>
</tr>
<tr>
<td>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr>
<td width="260" valign="top">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr>
<td>
<img src="cid:{5}" alt="" width="100%" height="140" style="display: block;"/>
</td>
</tr>
</tbody></table>
</td>
<td style="font-size: 0; line-height: 0;" width="20">
</td>
<td width="260" valign="top">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr>
<td>
<img src="cid:{6}" alt="" width="100%" height="140" style="display: block;"/>
</td>
</tr>
</tbody></table>
</td>
</tr>
</tbody></table>
</td>
</tr>
</tbody></table>
</td>
</tr>
<tr>
<td bgcolor="#ee4c50" style="padding: 30px 30px 30px 30px;">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr>
<td align="right" width="25%">
<table border="0" cellpadding="0" cellspacing="0">
<tbody><tr>
<td style="font-family: Arial, sans-serif; font-size: 12px; font-weight: bold;">
<img src="cid:{7}" alt="Twitter" width="38" height="38" style="display: block;" border="0"/>
</td>
<td style="font-family: Arial, sans-serif; font-size: 12px; font-weight: bold;">
<img src="cid:{8}" alt="Facebook" width="38" height="38" style="display: block;" border="0"/>
</td>
</tr>
</tbody></table>
</td>
</tr>
</tbody></table>
</td>
</tr>
</tbody></table>
</td>
</tr>
</tbody></table>
</body>
</html>
</xml-body>
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其中模板中会有一些标识符，如{i}，表还是字符串的预留位置，然后通过MessageFormat格式化这样的消息，然后将格式化后的字符串插入到模式中的适当位置。
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//得到XML的模板
String XML_path = ServletActionContext.getServletContext().getRealPath("/mailTemplate")+"/myMailTemplete.xml";
String str=new ReaderXML().read(XML_path);
Object[] obj=new Object[]{mailForm.getName(), mailForm.getPhone(), mailForm.getE_mail(), mailForm.getContent(), "e_mail", "left", "right", "tw", "fb"};
//MessageFormat可以格式化这样的消息，然后将格式化后的字符串插入到模式中的适当位置
String tcontent = MessageFormat.format(str, obj);
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最终XML模板中的{i}分别被obj[i]替换了。
3.写一个对XML模板的类ReaderXML
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public class ReaderXML {
public String read(String path){
String str=null;
str=reader(path);
return str;
}
private String reader(String path){
SAXReader reader=new SAXReader();
String str=null;
try {
Document d=reader.read(new File(path));
Element e=d.getRootElement();
Element htmle=e.element("html");
str=htmle.asXML();
} catch (DocumentException e) {
e.printStackTrace();
}
return str;
}
}
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4.最后就是我们的控制器类MailAction
在 HTML 格式的正文中内含图片是使用MimeBodyPart类的setContentID() 方法设置对应的资源文件的唯一标识符，即 MIME 协议对于邮件的结构组织格式中的 Content-ID 头字段，对应着XML模板中的cid:{i}标识， 如<img src="cid:{8}"/>（注:{i}会通过MessageFormat.format替换成对应的字符串）
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public class MailAction extends ActionSupport{
private MailForm mailForm;
public MailForm getMailForm() {
return mailForm;
}
public void setMailForm(MailForm mailForm) {
this.mailForm = mailForm;
}
//添加内嵌图片
private MimeBodyPart createImageMimeBodyPart(String imageName) throws MessagingException, UnsupportedEncodingException{
FileDataSource fds=new FileDataSource(ServletActionContext.getServletContext().getRealPath("/image")+"/" + imageName + ".gif");
MimeBodyPart mbp=new MimeBodyPart();
DataHandler dh=new DataHandler(fds);
mbp.setDataHandler(dh);
//设置对应的资源文件的唯一标识符，即 MIME 协议对于邮件的结构组织格式中的 Content-ID 头字段；
mbp.setHeader("Content-ID", imageName);
mbp.setFileName(MimeUtility.encodeText(fds.getName()));
return mbp;
}
public String sendMail(){
try {
HttpServletRequest request = ServletActionContext.getRequest();
String pwd = "************";//发件人邮箱密码
String mailfrom = "***********@163.com"; //网易的邮箱
String wangyiFrom = mailfrom.substring(0, mailfrom.indexOf('@'));//网易邮箱的用户名
String tu = "163.com"; //发件人邮箱的后缀域名
String tto= "**********@qq.com"; //接收邮件的邮箱
String ttitle= "有人联系你---来自胡峻峥的个人网站";
//根据其物理路径，得到XML的模板
String XML_path = ServletActionContext.getServletContext().getRealPath("/mailTemplate")+"/myMailTemplete.xml";
String str=new ReaderXML().read(XML_path);
Object[] obj=new Object[]{mailForm.getName(), mailForm.getPhone(), mailForm.getE_mail(), mailForm.getContent(), "e_mail", "left", "right", "tw", "fb"};
//MessageFormat可以格式化这样的消息，然后将格式化后的字符串插入到模式中的适当位置
String tcontent = MessageFormat.format(str, obj);
Properties props=new Properties();
props.put("mail.smtp.host","smtp."+tu);//邮箱SMTP服务器地址端口
props.put("mail.smtp.auth","true");//这样才能通过验证
Session s=Session.getInstance(props);
s.setDebug(true);
MimeMessage message=new MimeMessage(s);
//给消息对象设置发件人/收件人/主题/发信时间
InternetAddress from;
from = new InternetAddress(mailfrom);//发件人的qq邮箱
message.setFrom(from);
InternetAddress to=new InternetAddress(tto);//收件人的邮箱
message.setRecipient(Message.RecipientType.TO,to);
message.setSubject(ttitle);
message.setSentDate(new Date());
//给消息对象设置内容
BodyPart mbp=new MimeBodyPart();//新建一个存放信件内容的BodyPart对象
mbp.setContent(tcontent,"text/html;charset=gb2312");//给BodyPart对象设置内容和格式/编码方式
// 用于组合文本和图片，"related"型的MimeMultipart对象
Multipart mm=new MimeMultipart("related");//新建一个MimeMultipart对象用来存放BodyPart对象(事实上可以存放多个)
mm.addBodyPart(mbp);//将BodyPart加入到MimeMultipart对象中(可以加入多个BodyPart)
//添加图片
mm.addBodyPart(createImageMimeBodyPart("e_mail"));
mm.addBodyPart(createImageMimeBodyPart("left"));
mm.addBodyPart(createImageMimeBodyPart("right"));
mm.addBodyPart(createImageMimeBodyPart("tw"));
mm.addBodyPart(createImageMimeBodyPart("fb"));
message.setContent(mm);//把mm作为消息对象的内容
message.saveChanges();
Transport transport=s.getTransport("smtp");
transport.connect("smtp."+tu, wangyiFrom, pwd); //这里的wangyiFrom为发件人网易账号
transport.sendMessage(message,message.getAllRecipients());
transport.close();
ActionContext.getContext().getSession().put("operations", "邮件发送成功, 请耐心等待回复!");
} catch (Exception e) {
System.out.println(e.toString());
ActionContext.getContext().getSession().put("errors", e.toString());
return "errors";
}
return "sendMail";
}
}
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以上就是本文的全部内容，希望对大家的学习有所帮助。