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我在上传其他输入文本格式的图像时遇到了问题并发送到ajax_php_file.php。但只有图像上传，我的输入文字全部为空。希望有人能在这里协助。非常感谢。使用ajax上传图像并传递多参数
<div id="imagebox">
<div class="image_preview">
<div class="wrap">
<img id="previewing" />
</div>
<!-- loader.gif -->
</div><!--wrap-->
<!-- simple file uploading form -->
<form id="uploadimage" method="post" enctype="multipart/form-data">
<input id="file" type="file" name="file" /><br>
<div id="imageformats">
Valid formats: jpeg, gif, png, Max upload: 1mb
</div> <br>
Name:
<input id="name" type="text"/>
<input id="cat" type="hidden" value="company"/>
Description
<textarea id="description" rows="7" cols="42" ></textarea>
Keywords: <input id="keyword" type="text" placeholder="3 Maximum Keywords"/>
<input type="submit" value="Upload" class="pre" style="float:left;"/>
</form>
</div>
<div id="message">
</div>
的script.js
$(document).ready(function (e) {
$("#uploadimage").on('submit',(function(e) {
e.preventDefault();
$("#message").empty();
$('#loading').show();
var name = document.getElementById("name").value;
var desc = document.getElementById("description").value;
var key = document.getElementById("keyword").value;
var cat = document.getElementById("cat").value;
var myData = 'content_ca='+ cat + '&content_desc='+desc+ '&content_key='+key+ '&content_name='+name;
$.ajax({
url: "ajax_php_file.php", // Url to which the request is send
type: "POST", // Type of request to be send, called as method
data: new FormData(this,myData), // Data sent to server, a set of key/value pairs representing form fields and values
//data:myData,
contentType: false, // The content type used when sending data to the server. Default is: "application/x-www-form-urlencoded"
cache: false, // To unable request pages to be cached
processData:false, // To send DOMDocument or non processed data file it is set to false (i.e. data should not be in the form of string)
success: function(data) // A function to be called if request succeeds
{
$('#loading').hide();
$("#message").html(data);
}
});
}));
// Function to preview image
$(function() {
$("#file").change(function() {
$("#message").empty(); // To remove the previous error message
var file = this.files[0];
var imagefile = file.type;
var match= ["image/jpeg","image/png","image/jpg"];
if(!((imagefile==match[0]) || (imagefile==match[1]) || (imagefile==match[2])))
{
$('#previewing').attr('src','noimage.png');
$("#message").html("<p id='error'>Please Select A valid Image File</p>"+"<h4>Note</h4>"+"<span id='error_message'>Only jpeg, jpg and png Images type allowed</span>");
return false;
}
else
{
var reader = new FileReader();
reader.onload = imageIsLoaded;
reader.readAsDataURL(this.files[0]);
}
});
});
function imageIsLoaded(e) {
$("#file").css("color","green");
$('#image_preview').css("display", "block");
$('#previewing').attr('src', e.target.result);
$('#previewing').attr('width', '250px');
$('#previewing').attr('height', '230px');
};
});
ajax_php_file.php
<?php
session_start();
$user_signup = $_SESSION['user_signup'];
if(isset($_FILES["file"]["type"]))
{
$name = filter_var($_POST["content_name"],FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$ca = filter_var($_POST["content_ca"],FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$desc = filter_var($_POST["content_desc"],FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$key = filter_var($_POST["content_key"],FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$validextensions = array("jpeg", "jpg", "png");
$temporary = explode(".", $_FILES["file"]["name"]);
$file_extension = end($temporary);
$imagedata = addslashes(file_get_contents($_FILES['file']['tmp_name']));
$imagename= ($_FILES['file']['name']);
$imagetype =($_FILES['file']['type']);
if ((($_FILES["file"]["type"] == "image/png") || ($_FILES["file"]["type"] == "image/jpg") || ($_FILES["file"]["type"] == "image/jpeg")
) && ($_FILES["file"]["size"] < 1000000)//Approx. 100kb files can be uploaded.
&& in_array($file_extension, $validextensions))
{
if ($_FILES["file"]["error"] > 0)
{
echo "Return Code: " . $_FILES["file"]["error"] . "<br/><br/>";
}
else
{
if (file_exists("upload/" . $_FILES["file"]["name"])) {
echo $_FILES["file"]["name"] . " <span id='invalid'><b>already exists.</b></span> ";
}
else
{
$sourcePath = $_FILES['file']['tmp_name']; // Storing source path of the file in a variable
$targetPath = "upload/".$_FILES['file']['name']; // Target path where file is to be stored
move_uploaded_file($sourcePath,$targetPath) ; // Moving Uploaded file
echo "<span id='success'>Image Uploaded Successfully...!!</span><br/>";
echo "<br/><b>File Name:</b> " . $_FILES["file"]["name"] . "<br>";
echo "<b>Type:</b> " . $_FILES["file"]["type"] . "<br>";
echo "<b>Size:</b> " . ($_FILES["file"]["size"]/1024) . " kB<br>";
echo "<b>Temp file:</b> " . $_FILES["file"]["tmp_name"] . "<br>";
mysql_query("INSERT INTO upload(name,picname,image,type,email,cat,description,keyword) VALUES('".$name."','".$imagename."','".$imagedata."','".$imagetype."','".$user_signup."','".$ca."','".$desc."','".$key."')");
}
}
}
else
{
echo "<span id='invalid'>***Invalid file Size or Type***<span>";
}
}
?>