Question

我正在使用Velule Transformer电子邮件模板和我的Mule smtp。有没有什么方法可以从我的类路径中添加电子邮件模板中的图像？那是例如..如果我在我的类路径中有一个图像说abc.png，我能否在我的速度电子邮件模板中使用它，如＆lt; image src = ......

Answer 1

您可以使用类路径资源作为源来向Mule消息添加出站附件。这些Mule消息附件将由SMTP出站转换器转换为MIME部分。

从这里的讨论Embedding images into html email with java mail看来你需要声明这样的图像：

<img src=\"cid:uniqueImageID\"/>

您必须在cid之后使用唯一ID：这与Content-ID部件标头一致。 Mule允许您通过添加名为attachmentName +“Headers”的出站消息属性java.util.Map来指定自定义部件标头（attachmentName是出站附件的名称）。

一个潜在的难点是，ObjectToMimeMessage变换器中的代码只需调用javax.activation.DataHandler来转换javax.mail.BodyPart（来自Mule消息出站附件）setFileName 1}}但不是setDisposition 我认为需要正确显示图像。这就是说，我不是这里的专家，您可能更了解如何正确生成带有附加图像的MIME电子邮件。

Answer 2

1）在HTML中嵌入编码的Base64图像例如

使用以下网站将图片转换为base64： http://www.dailycoding.com/Utils/Converter/ImageToBase64.aspx

Answer 3

我已按照您的代码以下列方式在速度变换器中添加图像路径，String徽标将从spring beans获取值

public final class MessageTransformer extends AbstractMessageTransformer
{
    private VelocityEngine velocityEngine;
    private String         templateName;
    private Template       template;

   //This part is for getting the value from property file by declaring setter and getter for fileName and  subscriberName

    private String logo;
    public String getLogo() {
        return logo;
    }  
    public void setLogo(String logo) {
        this.logo = logo;
    }

    //This part is for getting template for email from classpath configured in mule flow
    public VelocityMessageTransformer()
    {
        registerSourceType(Object.class);
        setReturnDataType(new SimpleDataType<String>(String.class));
    }

    public void setVelocityEngine(final VelocityEngine velocityEngine)
    {
        this.velocityEngine = velocityEngine;
    }

    public void setTemplateName(final String templateName)
    {
        this.templateName = templateName;
    }

    @Override
    public void initialise() throws InitialisationException
    {
        try
        {
            template = velocityEngine.getTemplate(templateName);
        }
        catch (final Exception e)
        {
            throw new InitialisationException(e, this);
        }
    }

    @Override
    public Object transformMessage(final MuleMessage message, final String outputEncoding)throws TransformerException
    {


        try
        {
            final StringWriter result = new StringWriter();
            FileDataSource myFile = new FileDataSource (new File (logo)); // It contains path of image file
            message.setOutboundProperty("logo", myFile);
            // -------------------------------------------------------

            final Map<String, Object> context = new HashMap<String, Object>();
            context.put("message", message);
            context.put("payload", message.getPayload());
            context.put("logo", message.getOutboundProperty("logo"));
            template.merge(new VelocityContext(context), result); //Merging all the attributes
            System.out.println("MAIL WITH TEMPLATE SEND SUCCESSFULLY !!!");
            System.out.println( result.toString() );
            return result.toString();               
        }
        catch (final Exception e)
        {
            throw new TransformerException(
                           MessageFactory.createStaticMessage("Can not transform message with template: " + template)
                      , e);
        }
    }
}

如何在classpath中添加电子邮件速度变换器模板中的图像

3 个答案: