Question

以下代码用于使用javamail api从java应用程序发送电子邮件（使用gmail）。

它在Linux（Kubuntu 16.04）上运行良好，但在Windows上没有开启Avast防病毒软件。

    public void doSendGmail(){
    Connection con = Functions.ConnectToDB();
    try {
        Statement stmt = con.createStatement();
        String sqlQuery = "select * from settings";
        ResultSet rs = stmt.executeQuery(sqlQuery);

        while(rs.next()){
            String email = rs.getString("Email");
            //String pass = rs.getString("Password");
            byte [] pass = rs.getBytes("Password");

            cipher = Cipher.getInstance("DES/CTR/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, keySpec,ivspec);
            byte [] plain_text = cipher.doFinal(pass);

            from = email;
            password = new String(plain_text);
        }

        con.close();// close the connection

    } catch (Exception e) {
        JOptionPane.showMessageDialog(this, "Error retrieving email address and password\n"+e.toString(),
                "Error",JOptionPane.ERROR_MESSAGE);
    }

    to = txtTo.getText();
    cc = txtCC.getText();
    bcc = txtBCC.getText();
    subject = txtSubject.getText();
    message_body = jtaMessage.getText();

    Properties props = new Properties();
    props.put("mail.smtp.starttls.enable", "true");
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.port", "587");


    /*use authenticator as username and password are supplied 'on demand' i.e queried from database
    or supplied via a login dialog*/
    Session session = Session.getInstance(props,new javax.mail.Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication(){
            return new PasswordAuthentication(from, password);
        }
    });

    try {            
        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress(from));
        message.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to));
        if(!cc.equals("")){
            message.setRecipients(Message.RecipientType.CC, InternetAddress.parse(cc));
        }
        if(!bcc.equals("")){
            message.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(bcc));
        }
        message.setSubject(subject);

        if(filePathList.isEmpty()){// if a file(s) have not been attached...
            message.setText(message_body);
            Transport.send(message);
        }
        else{// if a file(s) have been attached
            MimeBodyPart textPart = new MimeBodyPart();
            textPart.setText(message_body);// actual message
            Multipart multipart = new MimeMultipart();// create multipart message
            multipart.addBodyPart(textPart);//add the text message to the multipart

            for(int i =0; i<filePathList.size(); i++){// use for loop to attach file(s)
                MimeBodyPart attachmentPart = new MimeBodyPart();
                DataSource source = new FileDataSource((String)filePathList.get(i));
                attachmentPart.setDataHandler(new DataHandler(source));
                attachmentPart.setFileName((String)fileList.get(i));
                multipart.addBodyPart(attachmentPart);// add the attachment to the multipart
                message.setContent(multipart);// add the multipart to the message
            }
            Transport.send(message);
        }

        JOptionPane.showMessageDialog(this, "Message Sent!","Sent",JOptionPane.INFORMATION_MESSAGE);

    } catch (Exception e) {
        JOptionPane.showMessageDialog(this, "Error sending email message\n"+e.toString(),
                "Error",JOptionPane.ERROR_MESSAGE);
    }
}

显示以下错误消息

当我禁用所有avast防护时，它会完美地发送邮件消息。

如何解决问题？

其他防病毒也有同样的效果吗？

Answer 1

Avast介入与服务器的安全通信，可能是因为它可以阻止您发送病毒或垃圾邮件。但既然如此作为“中间人”，例外正确地告诉你你的连接不安全。

JavaMail FAQ告诉您如何使用。来信任Avast证书 InstallCert程序将其添加到您的信任存储区，或者如何不检查通过设置mail.smtp.ssl.trust属性来完成证书。

Answer 2

这就是我做的。我从此链接https://javaee.github.io/javamail/InstallCert.java下载了InstallCert程序。然后我使用文本编辑器（记事本++）打开文件，并将端口从443更改为465（gmail的SSL端口）并保存更改。之后我编译了文件并运行了提供gmail主机的程序，即java InstallCert smtp.gmail.com。生成了一个文件（jssecacerts）。我将此文件复制到$ JAVA_HOME / jre / lib / security文件夹中。我终于能够发送所有avast盾牌的电子邮件了！

无法找到所请求目标的有效证书路径（在安装了avast的Windows上）

2 个答案: