我正在制作一个上传图片的jquery移动应用程序。
我使用了这段代码但是没有ajax你就无法从服务器捕获回声(这个完美无缺)
<form action="http://tipsnow.altervista.org/upload.php" method="post" enctype="multipart/form-data">
Title: <input type="text" name="title" id="title" />
Question Text: <input type="text" name="text" id="text" />
<input type="hidden" id="idUtente" name="idUtente" value="">
Select image to upload:
<input type="file" name="fileToUpload" id="fileToUpload">
<input type="submit" value="Upload Image" name="submit">
</form>
所以我实现了ajax帖子:
html代码:
<form action="">
Title: <input type="text" name="title" id="title" />
Question Text: <input type="text" name="text" id="text" />
<input type="hidden" id="idUtente" name="idUtente" value="">
Select image to upload:
<input type="file" name="fileToUpload" id="fileToUpload">
<input type="submit" value="Upload Image" name="submit">
</form>
jquery代码:
$(document).ready(function () {
$('form').submit(function () {
var title = document.getElementById('title').value;
var idUtente = sessionStorage.getItem('autenticato').toString();
var text = document.getElementById('text').value;
var fileToUpload = document.getElementById('fileToUpload').files[0];
var formData = new FormData();
formData.append('title', title);
formData.append('text', text);
formData.append('idUtente', idUtente);
formData.append('fileToUpload', fileToUpload);
$.ajax({
url: 'http://tipsnow.altervista.org/upload.php',
data: formData,
type: 'post',
dataType: 'text',
contentType: false,
enctype: 'multipart/form-data',
processData: false,
success: function (data) {
alert(data);
return false;
}
})
});
php代码:
<?php
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
}
// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) {
echo "Sorry, your file is too large.";
$uploadOk = 0;
}
// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
$uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} else {
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
}
?>
但是只要我按下提交按钮,它就会把我带到应用程序的第一页而不上传任何内容,我认为这意味着ajax不成功,但问题是什么?
@edit注意到我没有附加提交按钮,做了但仍然没有工作
@@ edit:提交后28秒取得成功,但它没有上传img,也没有回复回声
@@@编辑: request
答案 0 :(得分:0)
比每个人制作它容易得多。
只需将表单元素传递给FormData构造函数即可。具有name
属性(包括文件)的输入元素的所有值都将传递给PHP脚本。
此外,您需要使用e.preventDefault();
来停止提交表单。
$('form').submit(function (e) {
e.preventDefault();
// 'this' refers to this current form element
$.ajax({
type: 'post',
url: 'http://tipsnow.altervista.org/upload.php',
data: new FormData(this), // important
contentType: false, // important
processData: false, // important
success: function (data) {
alert(data);
return false;
}
})
});
答案 1 :(得分:-1)
首先你必须在提交后停止行动
$( this ).serialize()
实施后检查浏览器控制台(例如在firefox中你有firebug)你得到了什么数据
从您可以使用的表格中获取数据:
{{1}}