使用javax邮件发送的电子邮件包含空主题和收件人字段

Question

我使用以下代码从我的应用程序发送电子邮件：

MimeMessage message = new MimeMessage(session);
String encodingOptions = "text/html; charset=UTF-8";
message.setHeader("Content-Type", encodingOptions);
message.setFrom(new InternetAddress(fromEmailAddress));
String[] toAddressArr = emailMsg.getTo().split(CommonConstants.SEMI_COLON);

for (String srtAddress : toAddressArr) {
    InternetAddress ia = new InternetAddress(srtAddress);
    addressToList.add(ia);
}

InternetAddress[] addressTo = new InternetAddress[addressToList.size()];
message.setRecipients(MimeMessage.RecipientType.TO, addressToList.toArray(addressTo));

if (!Util.isNullOrBlank(emailMsg.getCc())) {
    String[] copyAddressArr = emailMsg.getCc().split(CommonConstants.SEMI_COLON);
    ArrayList<InternetAddress> addressCopyList = new ArrayList<>();
    for (String srtAddress : copyAddressArr) {
    InternetAddress ia = new InternetAddress(srtAddress);
    addressCopyList.add(ia);
}

InternetAddress[] addressCopy = new InternetAddress[addressCopyList.size()];
message.setRecipients(MimeMessage.RecipientType.CC, addressCopyList.toArray(addressCopy));
}

if (!Util.isNullOrBlank(emailMsg.getBcc())) {
    String[] bccAddressArr = emailMsg.getBcc().split(CommonConstants.SEMI_COLON);
    ArrayList<InternetAddress> addressBccList = new ArrayList<>();
    for (String srtAddress : bccAddressArr) {
        InternetAddress ia = new InternetAddress(srtAddress);
        addressBccList.add(ia);
    }

    InternetAddress[] addressBcc = new InternetAddress[addressBccList.size()];
    message.setRecipients(MimeMessage.RecipientType.BCC, addressBccList.toArray(addressBcc));
}

    message.setSubject(emailMsg.getSubject(), "UTF-8");
    MimeBodyPart messageBodyPart = new MimeBodyPart();
    messageBodyPart.setText(emailMsg.getMessage());
    Multipart multipart = new MimeMultipart();
    multipart.addBodyPart(messageBodyPart);
    }
}

使用上述代码，我可以将电子邮件发送到收件人的电子邮件地址，但是，主题字段为空，收件人字段也为空，而所有收件人都显示在电子邮件的密件抄送字段中。此外，附件以字节字符串的形式出现，而不是可下载的pdf文件。下面是一个示例：

[e-mail]到密件抄送：[e-mail]，密件抄送：[e-mail]

------=\u Part\u 0\u 455461077.1587067667930内容类型：文本/普通；charset=美国ascii内容传输编码：7bit

亲爱的先生，

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谨致问候。对于XYZ公司-----------=\u Part\u 0\u 455461077.1587067667930内容类型：文本/普通；名称=37855。pdf内容传输编码：base64内容处置：附件；文件名=37855。pdf格式

JVBERi0xLjMKJcTl8uXrp/Og0MTGCjQgMCBvYmoKPDwgL0xlbmd0aCA1IDAgUiAvRmlsdGVyIC9G bGF0ZURlY29kZSA PgpzdHJlYW0KeAHNXW1v5EZy/s5fqy9mdbxeocvwzet5ppku7eo42ziwinv eowtkchsanc/P BPNX1VL qlmtrokbgludx13txf8d/y3/I/5b3dT7mp27M6z7/n//If8r/Oz9 81uV//xbrr/fvszo8qipm8qi/QIGVB2AYQZN3/N7 6zq7IoS/Tf/wxIbhge1Vi1RdlV VXd 1F1/2t vL v8yq//0v b/nhi83r/KrKDxf62Opj9zr79/z u/ZDVUPUYWJTEQYORVD06DRZW6T。。。

我的目的是用html格式发送电子邮件，然而，我无法继续实现这一目标，因为我被这个节目阻止了。任何帮助都将不胜感激。

编辑

我附上一个pdf文件作为电子邮件附件发送，代码如下：

if (attachments != null) {  
        for (EmailAttachmentData attachment : attachments) {
            MimeBodyPart attachPart = new MimeBodyPart();
            DataSource source = new ByteArrayDataSource(attachment.getData(),      
            attachment.getFileType());
            attachPart.setDataHandler(new DataHandler(source));
            attachPart.setFileName(attachment.getFileName());
            multipart.addBodyPart(attachPart);
        }
    }

    message.setContent(multipart);
    message.setSentDate(new Date());

    try {
        Transport transport = session.getTransport(mailProtocol);
        transport.connect(mailHost, Integer.parseInt(mailPort), userName, password);
        transport.sendMessage(message, message.getAllRecipients());
        transport.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }

下面是我对javax邮件的maven依赖项定义

    <dependency>
        <groupId>javax.mail</groupId>
        <artifactId>javax.mail-api</artifactId>
        <version>1.6.2</version>
    </dependency>
    <dependency>
        <groupId>javax.mail</groupId>
        <artifactId>mail</artifactId>
        <version>1.4.7</version>
        <scope>provided</scope>
    </dependency>

Answer 1

通过从一些maven依赖项中排除geronimo-javamail\u 1.4\u规范和geronimo-activation\u 1.1\u规范，我最终解决了自己的问题。我也有多个javax。邮件api和javax。邮件依赖项，从而删除当天保存的重复项。现在一切正常。主题和收件人字段填充良好，附件也正确发送。为清楚起见，我将我所做的排除发布在下面：

    <dependency>
        <groupId>org.apache.ws.commons.axiom</groupId>
        <artifactId>axiom-impl</artifactId>
        <version>1.2.8</version>
        <exclusions>
            <exclusion>
                <groupId>org.apache.geronimo.specs</groupId>
                <artifactId>geronimo-activation_1.1_spec</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.apache.geronimo.specs</groupId>
                <artifactId>geronimo-javamail_1.4_spec</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.apache.ws.commons.axiom</groupId>
        <artifactId>axiom-api</artifactId>
        <version>1.2.8</version>
        <exclusions>
            <exclusion>
                <groupId>org.apache.geronimo.specs</groupId>
                <artifactId>geronimo-activation_1.1_spec</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.apache.geronimo.specs</groupId>
                <artifactId>geronimo-javamail_1.4_spec</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.apache.ws.commons.axiom</groupId>
        <artifactId>axiom-dom</artifactId>
        <version>1.2.8</version>
        <exclusions>
            <exclusion>
                <groupId>org.apache.geronimo.specs</groupId>
                <artifactId>geronimo-activation_1.1_spec</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.apache.geronimo.specs</groupId>
                <artifactId>geronimo-javamail_1.4_spec</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

Answer 2

您使用的是什么版本的JavaMail？

您的收件人代码看起来很好，但比需要的详细得多。但你的内容代码全错了。

带有附件的消息是具有多部分内容的消息，其中一个正文部分包含主消息内容，另一个正文部分包含附件。

您的代码about没有显示您实际上是如何发送消息的。您只是在调用Transport.send?