大家好，我失去了两个小时来解决这个问题。
我有一个发送邮件的Java类，里面的主体是HTML格式
这里的方法
private void sendMail() {
String body = "<html><body><p>Mr.<b>Jack Frusciante</b><br/>Work : <b>Programmer</b><br/><img alt=\"Firm\" src=\"data:image/png;base64,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\"/><br/><p>Lorem ipsum</p></p></body></html>";
SendMail sendMail = new SendMail("jack@gmail.com","othermail@gmail.com","subject","");
sendMail.setCC("othermailcc@gmail.com");
sendMail.setBody(body);
sendMail.send();
}
这里是SendMail类
package com.jack.util;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
import javax.mail.internet.PreencodedMimeBodyPart;
import javax.mail.Message.RecipientType;
import javax.mail.PasswordAuthentication;
import com.liferay.mail.service.MailServiceUtil;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.kernel.mail.MailMessage;
import com.liferay.portal.kernel.mail.SMTPAccount;
import com.liferay.util.mail.MailEngine;
import com.sun.mail.smtp.SMTPMessage;
public class SendMail {
private String from;
private String subject;
private String body;
private String to;
private String cc;
private String cid;
private String smtpHost;
private String smtpPort;
private Boolean authenticationRequired;
private String authenticationUsername;
private String authenticationPassword;
public SendMail(String from,String to,String subject,String body) {
super();
this.to = to;
this.from = from;
this.subject = subject;
this.body = body;
}
public String getSmtpHost() {
return smtpHost;
}
public void setSmtpHost(String smtpHost) {
this.smtpHost = smtpHost;
}
public String getSmtpPort() {
return smtpPort;
}
public void setSmtpPort(String smtpPort) {
this.smtpPort = smtpPort;
}
public Boolean getAuthenticationRequired() {
return authenticationRequired;
}
public void setAuthenticationRequired(Boolean authenticationRequired) {
this.authenticationRequired = authenticationRequired;
}
public String getAuthenticationUsername() {
return authenticationUsername;
}
public void setAuthenticationUsername(String authenticationUsername) {
this.authenticationUsername = authenticationUsername;
}
public String getAuthenticationPassword() {
return authenticationPassword;
}
public void setAuthenticationPassword(String authenticationPassword) {
this.authenticationPassword = authenticationPassword;
}
public void setCC(String cc) {
this.cc=cc;
}
public String getBody() {
return body;
}
public void setBody(String body) {
this.body = body;
}
public void send() {
new Thread( new Runnable() {
@Override
public synchronized void run() {
performSend();
}
}).start();
}
private void performSend() {
try {
Session session = getSession();
SMTPMessage transport = new SMTPMessage(session);
InternetAddress iaFrom = new InternetAddress(from, from);
InternetAddress iaTo = new InternetAddress(to,to);
InternetAddress iaCC = (cc!=null) ? new InternetAddress(cc,cc) : null;
MimeMultipart mailMessage = new MimeMultipart("related");
BodyPart bp = new MimeBodyPart();
bp.setContent(body,"text/html");
mailMessage.addBodyPart(bp);
transport.setContent(mailMessage);
transport.setFrom(iaFrom);
if(iaCC!=null) {
transport.setRecipient(RecipientType.CC, iaCC);
}
transport.setSubject(subject);
InternetAddress[] recipients = { iaTo };
Transport.send(transport, recipients);
System.out.println("Sent message successfully....");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private Session getSession() {
Properties mailProps = new Properties();
mailProps.put("mail.transport.protocol", "smtp");
mailProps.put("mail.smtp.host", "smtp.gmail.com");
mailProps.put("mail.smtp.socketFactory.port", "465");
mailProps.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
mailProps.put("mail.smtp.auth", "true" );
mailProps.put("mail.smtp.port","465");
return Session.getInstance(mailProps,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("jack","jackpassword");
}
});
}
}
邮件到达但是html的图像从未显示过。我注意到，检查了消息的来源，img标签就像这样改变了
<img alt=3D"Firm" src=3D"data:image/png;base64,iVBORw0KGgoAAAA=
NSUhEUgAAAKAAAACgCAMAAAC8EZcfAAAA7VBMVEX///90yW8IZGXp9uYAWlsAYWJRg4SNqqoAXl=
9wyGuzzs72/PVyo6QAU1QddHUAWVrs8vJtx2ef2Zz5/fkSbW7t+Oub2JjZ5+doxWKGz4J7zHYAY=
WXH2dnh7OyN0olBgoJbrXrc8duCzn0ATU+lxMTQ7M7A5b+T1I+n3KSy4K+UubrW7tUudHWbuLiB=
rq7J6MZPiJBpmpqv2rRXlZZHjI3B0NC14LNjnZx+pqe309I6eHlXrnE+h4iHyo+qy8ZxtJCUwLJ=
msYRGm2sbc2ZrwG5Spmw3jGh/rpw3eH+by6gAa2IxhmgCZXEAWGRgtW0uQDJmAAAF9ElEQVR4nO=
2Ya3uiZhCGESHhIAICi6JoZDHGeCrVZNVs0+22Tdttu///53RmOKhRs1F77e6HuT9ErpHAw7zzz=
DsoCAzDMAzDMAzDMAzDMAzDMAzDMAzDMAzDMAzDMAxzDo6Ffz0dD51vrGUfrSSp+N5Nv9YTdI9k=
fl+0Voqi/Bmpqhr1ysB3p3Asi6LYfCiVSuqNBwK9by0IsFq+77dSun+QwI97BTp6xtGlCTfwrZM=
Fhu9Wnc7IJZ4e3KbY/CdSS6Vg6m0vsT6oZdzcd4/TN+p0Vq2TBQr6xDUMU4Hcye7DQ/PfT39NG7=
Z9L+jbJVjGysyIro+5QWzKsuGfLhAJtUoHF/fvEty+Xva8XQcPIa0F9fsjLp4o8Ozn6QOsCqSw+=
etvePvhPgNf2/BNEAQlElo/4tIXsijPz9XnzOAxRfF3tMdgn3+dGgiLrrvd4RsS+Hp/+yNZVG7P=
FZiQPrSvXdvbX/QGfNcu50f18vorb49YPy6KTnNF0TzDI8QC9TWfIElqv4sLvNNKvDq2Hgr31XU=
G9fuoDvRzX1feGm/n1kI2JaMapqFLWGEXu8zqrWG4GLGqcFZyRLdyFtT+sADV6Hl7ycASVMkaTq=
OoQWca2GQa1e6lp0G9KYuOhMshvUvPgcWRZyiwAgdVDGmQDnf5en3CLeoTP33GBb7er0/AEgxIR=
S+A8xqpanSMiq5RI1rzcIWXMk0JP1Lnhh3QfClsCsTI7Ah9MelrPmEqGp63b4EFAVWRCHKLTY2w=
i/KC2oB8TZEWGEKUJuESPw36x1YV5NxtCvRNeAbtleIcy7qVSaAofsY7H9iCnXqq3pviNqM2KMe=
BCiULD+OR9zEyxuugIWaFwDsTZJFHYinNapJn8mVlod+608aLuStmND9hIoLp3ilmSLUGdsBPNV=
3rMoi20R16lNcnmE3uYL0l6AwhD83DXKCRth3piwlcJrNOVZQkhdKnuOSSJ2zT7b1t+n5jH1GDa=
RGr46bTxSjGQvIIFkjRnK05hoQNgejq+RdnB0sxJSXHnPlLAyV+xOW7QYHlZ+f31wLVdnkj1gAi=
zPxQyJIT4wGYRZnQjWCF5LRNt0wUGKLiV1SgnlRyJthTfbCW6F7hOpKRtxVScy6RklKgb8ZyqCr=
v8BpYb+vmjKrcVI9PAmNFVJJThq8Qy+aHH7HVeDutBluL2te77Y1NhNpNPt/YbzA0xhLEx6XBl1=
RMILRKd5WQBEICxfgEfbAYY0muWr0IFXjPBF6XyAbODRp9uo6V+m8ysMtYSZ4ddMZ7Egh65IvsK=
ga0oJYEz3Dq25gMAoUbGLeez4ICtrr6MPVF2lDSWMODOdshUGA168lYL6lZBMiakqwFytB/Xt0D=
d3ivgMB7GwQ62wI98gNEplSERSzVSu8CeBCCAlq+dXP2MWu5IPy6aD+n8E4CgT0S6G1P0w0qQdg=
7sE2n+3C5rWarXQuigErwFpZvRCUo5c35FltLNjUI1MxE5bQKTK8GAofkgm2BQzUbZbyocAkJxM=
obwoZSp40OZkoSGGICU6dWcEzKL1OlHbpz+vtTbILAbrQrEEeZdF5pq/kRClSjwXSABo/obMrQX=
Gthx8qcig37/ZbAMxIoWAYILLdRoL71QofmjWjkwyO1RtEBTTI2DQzYpQXHoBWUTLkwBg4PacNG=
cIOWL0LhZCwRBHr9XYENENKnCeLahqbXpiimkLCjdBjU0LGTEb4iSZ1UhiYqslFM0/RaMX5JQXz=
5IgvXjTXtp4dHTXt8hD85j1fAzxT4gIe/pN99uHqwgWiQdW7oyaIpLOem6S6ygT+ezWbrbQOWWF=
69VIHW3JBeRHF9y9Kt1zOc9rzilwasNxijrDC08pCDJxW3hweQXnx7shYXX2B2usNoml7X2+7Nc=
ZI4oweezxIHhLsDX44nCXpcPuZN5P+GpukDFg1HEhpEPpzgr8ClcrgJLyF9siwtvq6ibXAQlQ8N=
epjdUedbri+YQBvH40M/ILTGcXzujwsMwzAMwzAMwzAMwzAMwzAMwzAMwzAMwzAMwzAM8z3xHzx=
MgUvIvKzHAAAAAElFTkSuQmCC"/>
并且身体部位以
开头Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
有人有想法解决这个问题吗？
提前致谢
答案 0 :(得分：0)
我认为有一些问题类似于＆＃34;两次编码＆＃34; ...或类似的东西。
你应该尝试在发送过程的步骤中理解身体信息的转换方式。
智能替代方案，如果图片在您的文档库中并且可以访问pubblic，则提供URL而不是电子邮件正文中的完整图像内容...这可以帮助您避免与图像相关的几个潜在问题SMTP协议和邮件服务器加载。
答案 1 :(得分：0)
作为替代方案，我建议您将图像保存在图像服务器中，并将其引用包含在邮件正文中。当然，只要图像在您使用的特定服务器中可用，此解决方案就会起作用。
作为示例，我将您的图像上传到 Imgur 服务器，这是一个更简单的版本，可以从java发送邮件：
package stack;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class SendMail{
public static void main(String emailAddress){
String host = "smtp.gmail.com";
String from = "yourMail@gmail.com";
String subject = "Testing java mail";
String contentBody = "<html>\n" + "<body>\n"
+ "<p>Mr.<b>Jack Frusciante</b>\n"
+ "<br/>Work : <b>Programmer</b><br/>\n"
+ "<img src =\"http://imgur.com/81h91BL.png\"/>\n" + "<br/>\n"
+ "<p>Lorem ipsum</p></p>\n" + "</body>\n" + "</html>";
Properties props = System.getProperties();
props.put("mail.smtp.host", host);
props.put("mail.smtp.user", from);
props.put("mail.smtp.password", "");
props.put("mail.smtp.port", "587");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.auth", "true");
try{
Session session = Session.getDefaultInstance(props, null);
InternetAddress to_address = new InternetAddress(emailAddress.toLowerCase());
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO, to_address);
message.setSubject(subject);
message.setContent(contentBody, "text/html; charset=UTF-8");
Transport transport = session.getTransport("smtp");
transport.connect("smtp.gmail.com", "yourMail@gmail.com", "yourPassword");
transport.sendMessage(message, message.getAllRecipients());
transport.close();
System.out.println("This notification was sent to : " + emailAddress +"");
}
catch (MessagingException mex) {
System.out.println("send failed, exception: " + mex);
}
}
}