所以我得到一个表单来处理附件这是php代码
<?php
//we need to get our variables first
$email_to = 'xemax@tiscalinet.it'; //the address to which the email will be sent
$name = $_POST['name'];
$email = $_POST['email'];
$subject = "www.goliaerrante.com";
$message = 'Nome: '.$_POST['name'].chr(10) . chr(10) .
'Email: '.$_POST['email'].chr(10) . chr(10) .
'Telefono: '.$_POST['subject'].chr(10) . chr(10) .
'Messaggio: '.$_POST['message'];
$allegato = $_FILES['allegato']['tmp_name'];
$allegato_type = $_FILES['allegato']['type'];
$allegato_name = $_FILES['allegato']['name'];
$msg = "";
$headers = "From: " . $email;
// Verifico se il file è stato caricato correttamente via HTTP
// In caso affermativo proseguo nel lavoro...
if (is_uploaded_file($allegato))
{
// Apro e leggo il file allegato
$file = fopen($allegato,'rb');
$data = fread($file, filesize($allegato));
fclose($file);
// Adatto il file al formato MIME base64 usando base64_encode
$data = chunk_split(base64_encode($data));
// Genero il "separatore"
// Serve per dividere, appunto, le varie parti del messaggio.
// Nel nostro caso separerà la parte testuale dall'allegato
$semi_rand = md5(time());
$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
// Aggiungo le intestazioni necessarie per l'allegato
$headers .= "\nMIME-Version: 1.0\n";
$headers .= "Content-Type: multipart/mixed;\n";
$headers .= " boundary=\"{$mime_boundary}\"";
// Definisco il tipo di messaggio (MIME/multi-part)
$msg .= "This is a multi-part message in MIME format.\n\n";
// Metto il separatore
$msg .= "--{$mime_boundary}\n";
// Questa è la parte "testuale" del messaggio
$msg .= "Content-Type: text/plain; charset=\"iso-8859-1\"\n";
$msg .= "Content-Transfer-Encoding: 7bit\n\n";
$msg .= $message . "\n\n";
// Metto il separatore
$msg .= "--{$mime_boundary}\n";
// Aggiungo l'allegato al messaggio
$msg .= "Content-Disposition: attachment;\n";
$msg .= " filename=\"{$allegato_name}\"\n";
$msg .= "Content-Transfer-Encoding: base64\n\n";
$msg .= $data . "\n\n";
// chiudo con il separatore
$msg .= "--{$mime_boundary}--\n";
}
else
{
$msg = $message;
}
// Invio la mail
if (mail($email_to, $subject, $msg, $headers))
{
echo 'sent'; // we are sending this text to the ajax request telling it that the mail is sent..
}else{
echo 'failed';// ... or this one to tell it that it wasn't sent
}
?>
现在我正试图利用这个javascript来处理消息结果;如果我不使用javascript一切正常，当我把javascript工作，只是发送电子邮件，没有附件..
$(document).ready(function(){
$('#send_message').click(function(e){
//stop the form from being submitted
e.preventDefault();
/* declare the variables, var error is the variable that we use on the end
to determine if there was an error or not */
var error = false;
var name = $('#name').val();
var email = $('#email').val();
var subject = $('#subject').val();
var message = $('#message').val();
/* in the next section we do the checking by using VARIABLE.length
where VARIABLE is the variable we are checking (like name, email),
length is a javascript function to get the number of characters.
And as you can see if the num of characters is 0 we set the error
variable to true and show the name_error div with the fadeIn effect.
if it's not 0 then we fadeOut the div( that's if the div is shown and
the error is fixed it fadesOut.
The only difference from these checks is the email checking, we have
email.indexOf('@') which checks if there is @ in the email input field.
This javascript function will return -1 if no occurence have been found.*/
if(name.length == 0){
var error = true;
$('#name_error').fadeIn(300);
}else{
$('#name_error').fadeOut(300);
}
if(email.length == 0 || email.indexOf('@') == '-1'){
var error = true;
$('#email_error').fadeIn(300);
}else{
$('#email_error').fadeOut(300);
}
if(subject.length == 0){
var error = true;
$('#subject_error').fadeIn(300);
}else{
$('#subject_error').fadeOut(300);
}
if(message.length == 0){
var error = true;
$('#message_error').fadeIn(300);
}else{
$('#message_error').fadeOut(300);
}
//now when the validation is done we check if the error variable is false (no errors)
if(error == false){
//disable the submit button to avoid spamming
//and change the button text to Sending...
$('#send_message').attr({'disabled' : 'true', 'value' : 'Sending...' });
/* using the jquery's post(ajax) function and a lifesaver
function serialize() which gets all the data from the form
we submit it to send_email.php */
$.post("send_email.php", $("#contact_form").serialize(),function(result){
//and after the ajax request ends we check the text returned
if(result == 'sent'){
//if the mail is sent remove the submit paragraph
$('#send_message').remove();
//and show the mail success div with fadeIn
$('#mail_success').fadeIn(300);
}else{
//show the mail failed div
$('#mail_fail').fadeIn(300);
//reenable the submit button by removing attribute disabled and change the text back to Send The Message
$('#send_message').removeAttr('disabled').attr('value', 'Send The Message');
}
});
}
});
});
答案 0 :(得分：1)
你不能使用jQuery.post发布文件，因为某些浏览器可能不支持XMLHttpRequest实现（尤其是IE）
如果要异步发送文件（即AJAX），您有以下选择：
答案 1 :(得分：1)
前面提到过，IE中不存在通过XHR上传文件所需的HTML5支持，这在技术上并不正确。 IE10支持通过XHR / ajax上传文件所需的一切，将它们分割成分区并分别发送每个分区，稍后恢复失败或中断的上传等等。确实，不支持HTML5文件API的浏览器需要不同的解决方案，例如IE9及更早版本，以及Android 2.3.x及更早版本。而不是重新发明轮子，这将带给你除了头痛，使用已经在那里的工具之一。我建议Fine Uploader无缝处理所有主流浏览器，具有许多功能，并包含无依赖版本或jQuery版本。
有些插件使用Flash或Java作为后备。这不是必需的，我建议您在客户端避免使用Flash和Java，因为客户端Java和Flash存在严重的安全问题，以及这些将给您带来的支持噩梦。 Flash正在消亡，而Java（客户端）已经死了。未来不会包含这两个选项中的任何一个，因此，为了您的用户群，请使用本机浏览器/ javascript方法。
答案 2 :(得分：0)
您无法使用纯粹的ajax方法发送附件，文件也不会发送。但是，有许多插件（hacks）可以异步处理它们（即：AjaxFileUpload）。