Question

我写了一个java代码来发送邮件。

我需要设置电子邮件主题颜色，即我需要为方法message.setSubject（）的文本设置颜色。

以下是我的代码：

package comparexmlf1;
import comparexmlf1.validatexml;
import comparexmlf1.CarParser1;
import comparexmlf1.OrderParser2;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream.GetField;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Enumeration;
import java.util.Properties;
import java.util.logging.Logger;
import javax.lang.model.element.Element;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.swing.text.html.MinimalHTMLWriter;
import javax.xml.soap.MimeHeader;
import org.apache.log4j.Appender;
import org.apache.log4j.FileAppender;

public class mailer {
static void sendmail() throws IOException,   
MessagingException,AddressException
   {
          String to1=CarParser1.to1;
          DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy 
HH:mm:ss");
          Calendar cal = Calendar.getInstance();
            String to2 = CarParser1.to2;
            String to3= CarParser1.to3;
            String to4=CarParser1.to4;
            String from = CarParser1.from;
            String host = CarParser1.host;
            Properties properties = System.getProperties();
            properties.setProperty("mail.smtp.host", host);
            Session session = Session.getDefaultInstance(properties);
            MimeMessage message = new MimeMessage(session); 
            int m_toterr,m_totwarn;
            String getfilepath="";
            String filenamechange="D:/newlog
/"+CarParser1.si_orderid+"_log.txt";
            System.out.println("New File Path for mail:"+filenamechange);
            String pathLogFile = filenamechange;
            Enumeration enumeration = 
CarParser1.logger.getRootLogger().getAllAppenders();
            try {
                m_toterr=validatexml.Total_err;
                message.setFrom(new InternetAddress(from));   
                message.addRecipient(Message.RecipientType.TO, new 
InternetAddress(to1));                  
                message.setSubject("<html><head></head><body><h1><p 
style=color:red> CAR Validation Report at : 
"+dateFormat.format(cal.getTime())+" for the Order ID : 
"+CarParser1.si_orderid+"</p></h1></body><html>","text/html" 
);                  
                    StringBuffer sb = new StringBuffer();
                    FileInputStream fstream = new 
FileInputStream(pathLogFile);
                    BufferedReader br = new BufferedReader(new 
InputStreamReader(fstream));

                    String singleLine;
                    while ((singleLine = br.readLine()) != null) 
                    {

                        sb.append(singleLine + "<br>");

                    }
                    br.close();
                    String allLines = sb.toString();
                    String allLines_html=" <html><head><title></title>   
</head>"
                            + "<body style=background-
color:skyblue;>"+allLines+"</body ></html>";
                  message.setContent(allLines_html, "text/html; 
charset=ISO-8859-1");
                 Transport.send(message);



                System.out.println("Email Sent successfully....");
                CarParser1.logger.info("Email Sent Successfully...");
                System.out.println();

            } 
            catch (MessagingException mex) 
            {
                System.out.println("Invalid Email Address.please provide 
a valid email id to send with");
                mex.printStackTrace();


            }



   }
  }

任何人都可以帮助我完成这项任务。

谢谢

Answer 1

没有办法做到这一点。显示消息的应用程序可以选择如何显示主题信息，包括要使用的字体和颜色。与邮件正文不同，没有办法为主题提供“富文本”或html属性。

如何将文本颜色设置为我的MIME message.setSubject（）方法文本内容？

1 个答案: