Question

我必须使用javax发送电子邮件。消息正文是html。它有一个图像标记，我的问题是应该是src属性中的值，以便在另一个网络中打开邮件时图像可用。图像放在服务器内的一个名为images的文件夹中。应用程序托管使用apache tomcat 7。

这是充当邮件正文的html字符串。

    String emailBody = "<table width=\"99%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">"+
            "<tr>"+
            "<td align=\"center\" valign=\"top\" style = \"background-color:#ED1B24;\">"+
            "<img src =\""+
            "http://myip:8080/Survey_services" + "/images/mrflogo.jpg" + "\">" + 
            "</td>" +
            "</tr>"+
            "<tr>"+
            "<td align=\"left\">"+
            "<p>Hi "+firstname+"," + "</p></b>"+
            "<p>A user account has been created for you, the user name will be your employee id</p></b>"+
            "<p>Your Password: "+password+"</p></b>"+
            "<p>Kindly change password at your convenience</p></b></b>"+
            "<p>Regards,</p></b>"+
            "<p>Admin Team</p>"+
            "</td>"+
            "</tr>"+
            "</table>"

我已经尝试了http://myip:8080/Survey_services和http://localhost:8080/Survey_services两种情况，无论是哪种情况，在其他计算机上打开图像时都没有加载邮件，也无法从Gmail中加载.Html的恢复正常。

FYI myip是托管项目的机器的ipV4地址。

修改

根据@Bill Shannon建议我尝试了以下内容。

String emailBody = "<table width=\"99%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">"+
            "<tr>"+
            "<td align=\"center\" valign=\"top\" style = \"background-color:#ED1B24;\">"+
            "<img src =\""+
            "cid:image" + "\">" + 
            "</td>" +
            "</tr>"+
            "<tr>"+
            "<td align=\"left\">"+
            "<p>Hi "+firstname+"," + "</p></b>"+
            "<p>A user account has been created for you, the user name will be your employee id</p></b>"+
            "<p>Your Password: "+password+"</p></b>"+
            "<p>Kindly change password at your convenience</p></b></b>"+
            "<p>Regards,</p></b>"+
            "<p>Admin Team</p>"+
            "</td>"+
            "</tr>"+
            "</table>";

 mailSession = Session.getDefaultInstance(emailProperties, null);
        emailMessage = new MimeMessage(mailSession);
        emailMessage.setFrom(new InternetAddress(data[0]));     
        emailMessage.addRecipient(Message.RecipientType.TO,
                new InternetAddress(mail));             
        emailMessage.setSubject("Account created");                    
        BodyPart messageBodyPart = new MimeBodyPart();
        messageBodyPart.setContent(emailBody, "text/html; charset=utf-8");
        Multipart multipart = new MimeMultipart();      
        multipart.addBodyPart(messageBodyPart);     
        messageBodyPart = new MimeBodyPart();

        DataSource fds = new FileDataSource(
             "path");

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

我无法弄清楚我应该提供什么价值，我尝试使用request.getServletContext（）。getRealPath（＆＃34; /＆＃34;）来提供服务器中文件的路径，其中request是请求servlet的对象，并在结尾添加文件夹和文件名。当我这样做时，会抛出异常。

这是堆栈跟踪。

javax.mail.MessagingException：发送消息时发生IOException; 嵌套异常是： java.io.FileNotFoundException：D：\ workspace.metadata.plugins \ org.eclipse.wst.server.core \ tmp0 \ wtpwebapps \ Survey_services（访问被拒绝） at com.sun.mail.smtp.SMTPTransport.sendMessage（SMTPTransport.java:1290）在email.GmailClass.send（GmailClass.java:227）在servlets.CreateUser.doPost（CreateUser.java:168）在javax.servlet.http.HttpServlet.service（HttpServlet.java:650）在javax.servlet.http.HttpServlet.service（HttpServlet.java:731）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:303）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:208）在org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:241）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:208）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:220）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:122）在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:505）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:169）在org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:103）在org.apache.catalina.valves.AccessLogValve.invoke（AccessLogValve.java:956）在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:116）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:436）在org.apache.coyote.http11.AbstractHttp11Processor.process（AbstractHttp11Processor.java:1078） at org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process（AbstractProtocol.java:625）在org.apache.tomcat.util.net.AprEndpoint $ SocketProcessor.doRun（AprEndpoint.java:2517）在org.apache.tomcat.util.net.AprEndpoint $ SocketProcessor.run（AprEndpoint.java:2506）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:617） at org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）在java.lang.Thread.run（Thread.java:745）引起：java.io.FileNotFoundException：D：\ workspace.metadata.plugins \ org.eclipse.wst.server.core \ tmp0 \ wtpwebapps \ Survey_services（访问被拒绝） at java.io.FileInputStream.open0（Native Method）在java.io.FileInputStream.open（FileInputStream.java:195）在java.io.FileInputStream。（FileInputStream.java:138）在javax.activation.FileDataSource.getInputStream（FileDataSource.java:97）在javax.activation.DataHandler.writeTo（DataHandler.java:305）在javax.mail.internet.MimeBodyPart.writeTo（MimeBodyPart.java:1645）在javax.mail.internet.MimeBodyPart.writeTo（MimeBodyPart.java:961）在javax.mail.internet.MimeMultipart.writeTo（MimeMultipart.java:553）在com.sun.mail.handlers.multipart_mixed.writeTo（multipart_mixed.java:81）在javax.activation.ObjectDataContentHandler.writeTo（DataHandler.java:889）在javax.activation.DataHandler.writeTo（DataHandler.java:317）在javax.mail.internet.MimeBodyPart.writeTo（MimeBodyPart.java:1645）在javax.mail.internet.MimeMessage.writeTo（MimeMessage.java:1850） at com.sun.mail.smtp.SMTPTransport.sendMessage（SMTPTransport.java:1241） ......还有25个

感谢任何帮助。

Answer 1

显然，URL必须正确指向服务器上的图像，您可以通过在另一个网络上的浏览器中打开URL来测试该图像。即使这样，许多邮件阅读器默认也不会在远程服务器上打开图像。唯一的解决方法是include the image in the message itself by creating a multipart/related message。

已损坏的图片代码

1 个答案: