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JavaMail - 如何发送带有图像的 html 内容

转载 作者：行者123 更新时间：2023-11-30 02:17:51 26 4
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我见过很多例子，他们分别提供了img文件路径并在html内容中引用了该路径。而我想读取HTML(其中包含图像引用)内容并作为邮件发送。当我通过html时内容、图像未渲染。

我引用了这个网站:http://www.rgagnon.com/javadetails/java-0504.html

Java 类:SimpleMail

import javax.mail.*;
import javax.mail.internet.*;

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Properties;

class SimpleMail {
    public static void main(String[] args) throws Exception{
        System.out.println("Sending mail...");
        Properties props = new Properties();
        props.setProperty("mail.transport.protocol", "smtp");
        props.setProperty("mail.host", "smtp.example.com");
        props.setProperty("mail.user", "user@example.com");
        props.setProperty("mail.password", "password");

        Session mailSession = Session.getDefaultInstance(props, null);
        mailSession.setDebug(true);
        Transport transport = mailSession.getTransport();

        MimeMessage message = new MimeMessage(mailSession);
        message.setSubject("HTML  mail with images");
        message.setFrom(new InternetAddress("me@sender.com"));
        //C:\Users\sv\Desktop\test.html
        BufferedReader br = null;
        FileReader fr = null;

            //br = new BufferedReader(new FileReader(FILENAME));
            fr = new FileReader("C:\\Desktop\\test.html");
            br = new BufferedReader(fr);

            String sCurrentLine;
            String outCome="";

            while ((sCurrentLine = br.readLine()) != null) {
                System.out.println(sCurrentLine);
                outCome+="\n"+sCurrentLine;
            }

           // message.setContent(outCome, "text/html:charset=utf-8");
        message.addRecipient(Message.RecipientType.TO,
                new InternetAddress("user1@example.com"));

        transport.connect();
        Multipart mp = new MimeMultipart();
        MimeBodyPart htmlPart = new MimeBodyPart();
        htmlPart.setContent(outCome, "text/html");
        htmlPart.setHeader("Content-Type", "text/html"  );
        mp.addBodyPart(htmlPart);
        message.setContent(mp);
        transport.sendMessage(message,
                message.getRecipients(Message.RecipientType.TO));
        transport.close();
    }
}

HTML 文件:test.html

<!DOCTYPE html>
<html>
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>

 <img src="tr.png" alt="Smiley face" height="42" width="42"> 
<div class="container">
  <h2>Dropdowns</h2>
  <p>The .dropdown class is used to indicate a dropdown menu.</p>
  <p>Use the .dropdown-menu class to actually build the dropdown menu.</p>
  <p>To open the dropdown menu, use a button or a link with a class of .dropdown-toggle and data-toggle="dropdown".</p>                                          
  <div class="dropdown">
    <button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown">Dropdown Example
    <span class="caret"></span></button>
    <ul class="dropdown-menu">
      <li><a href="https://www.w3schools.com/html/default.asp">HTML</a></li>
      <li><a href="https://www.w3schools.com/css/default.asp">CSS</a></li>
      <li><a href="https://www.w3schools.com/js/default.asp">JavaScript</a></li>
    </ul>
  </div>
</div>

</body>
</html>

输出:

enter image description here

最佳答案

试试这个:

// Your mail has 2 parts, the BODY(html) and the EMBEDDED image
MimeMultipart multipart = new MimeMultipart("related");

// first part (the html)
BodyPart messageBodyPart = new MimeBodyPart();
String htmlText = "<H1>Hello</H1><img src=\"cid:image\">";
messageBodyPart.setContent(htmlText, "text/html");

// Add it
multipart.addBodyPart(messageBodyPart);

// Second part (EMBEDDED image)
messageBodyPart = new MimeBodyPart();
DataSource fds = new FileDataSource("/path/to/your/image/tr.png");

messageBodyPart.setDataHandler(new DataHandler(fds));
messageBodyPart.setHeader("Content-ID", "<image>");

// add the image to the multipart
multipart.addBodyPart(messageBodyPart);

// put everything together
message.setContent(multipart);

// Send message
Transport.send(message);

关于JavaMail - 如何发送带有图像的 html 内容，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47748626/

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