Question

我正在尝试自定义Liferay Web Form portlet以接受文件上传，除了将文件附加到要发送的电子邮件之外，我已经完成了所有工作。

从表单中获取字段：

public void saveData(ActionRequest actionRequest, ActionResponse actionResponse) {

...

File uploadedFile = null;

...

Map<String,String> fieldsMap = new LinkedHashMap<String,String>();

// Create a FileItemFactory for disk-based file items
DiskFileItemFactory factory = new DiskFileItemFactory(1073741824, new File("/temp"));

// Create a new file upload handler
PortletFileUpload upload = new PortletFileUpload(factory);
upload.setSizeMax(67108864);

// Parse the request
List<FileItem> items = upload.parseRequest(actionRequest); 

int i = 1;

Iterator iter = items.iterator();

// Throw away the hidden field, don't need it
FileItem dud = (FileItem)iter.next();

while (iter.hasNext()) {

    FileItem item = (FileItem)iter.next();

    String fieldLabel = preferences.getValue(
        "fieldLabel" + i, StringPool.BLANK);

    String fieldType = preferences.getValue(
            "fieldType" + i, StringPool.BLANK);

    if (Validator.isNull(fieldLabel)) {
        break;
    }

    if(!fieldType.equals("file")) {
        String fieldValue = item.getString();
        fieldsMap.put(fieldLabel, fieldValue);
    } else {
        String fieldName = item.getName();
        uploadedFile = new File(fieldName);
        item.write(uploadedFile);
    }
        i++;
}
...

     if(sendAsEmail) {
         emailSuccess = sendEmail(fieldsMap, preferences, uploadedFile);
     }
}

然后构建和发送电子邮件：

protected boolean sendEmail(Map<String, String> fieldsMap, PortletPreferences preferences, File uploadedFile) {

    MailMessage mailMessage = new MailMessage(fromAddress, toAddress, subject, body, false);

    if(uploadedFile != null) { // i.e., there was 'file' field up above
        mailMessage.addAttachment(uploadedFile);
    }

    MailServiceUtil.sendEmail(mailMessage);


    if(uploadedFile != null) {
       uploadedFile.delete();
    }

}

尝试处理文件上传并将文件附加到邮件时，我收到以下控制台错误：

16:09:49,597 ERROR [MailEngine:489] IOException while sending message
16:09:49,598 ERROR [MailEngine:154] java.io.FileNotFoundException: helpdesk_.png (No such file or directory)

我是否正确配置了DiskFileItemFactory？我能做错什么？

感谢。

Answer 1

看起来MailServiceUtil子系统会旋转一个线程来实际发送电子邮件，而不是等待它返回（因此，线程）。所以在MailServiceUtil.sendEmail（）调用之后，我立即删除了要附加的文件，直到实际有机会被发送！

我将查看MailServiceUtil的某种类型的包装器，我可以将文件对象传递给它，然后在实际发送后执行删除。

Answer 2

您可以尝试使用MailEngine.send方法

发送（ InternetAddress，InternetAddress []到，InternetAddress [] cc， InternetAddress [] bcc，InternetAddress [] bulkAddresses， String subject，String body，boolean htmlFormat， InternetAddress [] replyTo，String messageId，String inReplyTo，文件[]附件）

我不确定MailEngineUtil.sendEmail是否能够正常工作，因为你已经发现它发送到总线然后调用了一个监听器（我认为它的MailMessageListener），即使你没有读取附件你在mailMessage中添加它。

commons-fileupload和Liferay的麻烦

2 个答案: