我正在尝试发送电子邮件。当我不带附件发送时，它会正确发送电子邮件。如果我尝试附加一些东西，那么它就不起作用。
班上：
import com.sun.mail.smtp.SMTPTransport;
import java.io.File;
import java.security.Security;
import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Part;
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.JOptionPane;
/**
*
* @author doraemon
*/
public class GoogleMail {
public static void Send(String from, String pass, String[] to, String assunto, String mensagem, File[] anexos) {
String host = "smtp.risantaisabel.com.br";
Properties props = System.getProperties();
props.put("mail.smtp.starttls.enable", "true"); // added this line
props.put("mail.smtp.host", host);
props.put("mail.smtp.user", from);
props.put("mail.smtp.password", pass);
props.put("mail.smtp.port", "587");
props.put("mail.smtp.auth", "true");
//String[] to = {"tarcisioambrosio@gmail.com"}; // added this line
Session session = Session.getDefaultInstance(props, null);
MimeMessage message = new MimeMessage(session);
try {
message.setFrom(new InternetAddress(from));
} catch (AddressException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
InternetAddress[] toAddress = new InternetAddress[to.length];
boolean enviado = true;
// To get the array of addresses
for( int i=0; i < to.length; i++ ) { // changed from a while loop
try {
toAddress[i] = new InternetAddress(to[i]);
} catch (AddressException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
// System.out.println(Message.RecipientType.TO);
for( int i=0; i < toAddress.length; i++) { // changed from a while loop
try {
message.addRecipient(Message.RecipientType.TO, toAddress[i]);
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
try {
message.setSubject(assunto);
//message.setContent(mensagem, "text/plain");
message.setText(mensagem);
Transport transport = session.getTransport("smtp");
transport.connect(host, from, pass);
if(anexos.length == 0){
}
else {
Multipart mp = new MimeMultipart();
BodyPart messageBodyPart = new MimeBodyPart();
for(int i = 0; i < anexos.length;i++) {
MimeBodyPart mbp2 = new MimeBodyPart();
FileDataSource fds = new FileDataSource(anexos[i].getPath());
mbp2.setDataHandler(new DataHandler(fds));
mbp2.setFileName(fds.getName());
mp.addBodyPart(mbp2);
}
messageBodyPart.setContent(message, "multipart/mixed");
mp.addBodyPart(messageBodyPart);
message.setContent(mp);
}
transport.sendMessage(message, message.getAllRecipients());
transport.close();
} catch (MessagingException e) {
// TODO Auto-generated catch block
JOptionPane.showMessageDialog(null, "<html><b>Email não enviado, tente novamente confirmando seus dados");
enviado = false;
e.printStackTrace();
}
if(enviado) {
JOptionPane.showMessageDialog(null, "<html><b>Email enviado.</html></b> \n\n Caso tenha digitado errado o email, somente pela sua caixa de entrada poderá confirmar se chegou. \n\n<html> Email da parte digitado:<b><font size = 3 COLOR=#ff0000> " + to[0]);
}
}
}
如果我将 setContent 更改为 text/plain，我会得到：
javax.mail.MessagingException: IOException while sending message;
nested exception is:
java.io.IOException: "text/html" DataContentHandler requires String object, was given object of type class javax.mail.internet.MimeMessage
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1167)
如果我将 setContent 更改为 multipart/mixed，我会得到：
javax.mail.MessagingException: MIME part of type "multipart/mixed" contains object of type javax.mail.internet.MimeMessage instead of MimeMultipart
你知道我该如何解决这个问题吗？谢谢。