javascript – 在Phonegap / Cordova图片上传中$_files为空
作者：互联网
现在已近6天,我正在尝试修复cordova-php中的图像上传问题,但无法修复它.我尝试了Google和Stack Overflow的多种解决方案.但他们都没有为我工作.
我使用下面的代码作为前端.
<div>
<h3>Server URL for upload.php:</h3>
<input id="serverUrl" type="text" value="http://sample.com/mobile_app/upload_img.php" />
</div>
<script type="text/javascript" charset="utf-8">
var deviceReady = false;
/**
* Take picture with camera
*/
function takePicture() {
navigator.camera.getPicture(
function(uri) {
var img = document.getElementById('camera_image');
img.style.visibility = "visible";
img.style.display = "block";
img.src = uri;
document.getElementById('camera_status').innerHTML = "Success";
},
function(e) {
console.log("Error getting picture: " + e);
document.getElementById('camera_status').innerHTML = "Error getting picture.";
},
{ quality: 50, destinationType: navigator.camera.DestinationType.FILE_URI});
};
/**
* Select picture from library
*/
function selectPicture() {
navigator.camera.getPicture(
function(uri) {
var img = document.getElementById('camera_image');
img.style.visibility = "visible";
img.style.display = "block";
img.src = uri;
document.getElementById('camera_status').innerHTML = "Success";
},
function(e) {
console.log("Error getting picture: " + e);
document.getElementById('camera_status').innerHTML = "Error getting picture.";
},
{ quality: 50, destinationType: navigator.camera.DestinationType.FILE_URI, sourceType: navigator.camera.PictureSourceType.PHOTOLIBRARY});
};
/**
* Upload current picture
*/
function uploadPicture() {
// Get URI of picture to upload
var img = document.getElementById('camera_image');
var imageURI = img.src;
if (!imageURI || (img.style.display == "none")) {
document.getElementById('camera_status').innerHTML = "Take picture or select picture from library first.";
return;
}
// Verify server has been entered
server = document.getElementById('serverUrl').value;
if (server) {
// Specify transfer options
var options = new FileUploadOptions();
options.fileKey="fileUpload";
options.httpMethod="POST";
options.fileName=imageURI.substr(imageURI.lastIndexOf('/')+1);
options.mimeType="image/jpeg";
options.chunkedMode = false;
// var op;
//op = new FileUploadOptions();
options.headers = {
Connection: "close"
};
// Transfer picture to server
var ft = new FileTransfer();
ft.upload(imageURI, server, function(r) {
document.getElementById('camera_status').innerHTML = "Upload successful: "+r.response+" bytes uploaded."; alert(r.response);
}, function(error) {
alert(r.response);
document.getElementById('camera_status').innerHTML = "Upload failed: Code = "+error.code;
}, options);
}
}
/**
* View pictures uploaded to the server
*/
function viewUploadedPictures() {
// Get server URL
server = document.getElementById('serverUrl').value;
if (server) {
// Get HTML that lists all pictures on server using XHR
var xmlhttp = new XMLHttpRequest();
// Callback function when XMLHttpRequest is ready
xmlhttp.onreadystatechange=function(){
if(xmlhttp.readyState === 4){
// HTML is returned, which has pictures to display
if (xmlhttp.status === 200) {
document.getElementById('server_images').innerHTML = xmlhttp.responseText;
}
// If error
else {
document.getElementById('server_images').innerHTML = "Error retrieving pictures from server.";
}
}
};
xmlhttp.open("GET", server , true);
xmlhttp.send();
}
}
/**
* Function called when page has finished loading.
*/
function init() {
document.addEventListener("deviceready", function() {deviceReady = true;}, false);
window.setTimeout(function() {
if (!deviceReady) {
alert("Error: PhoneGap did not initialize. Demo will not run correctly.");
}
},2000);
}
</script>
这里是后端(PHP)代码.
<?php
header("Access-Control-Allow-Origin: *");
//header("Access-Control-Allow-Methods: GET, POST, PUT, OPTIONS");
header("content-type: image/png");
// Directory where uploaded images are saved
$dirname = "user_img";//"mobile_app/user_img";
var_dump($_POST);
$new_image_name = urldecode($_FILES["fileUpload"]["name"]).".png";
// If uploading file
//echo $_FILES;
echo $new_image_name;
print_r($_FILES["fileUpload"]);
if ($_FILES) {
print_r($_FILES);
//mkdir ($dirname, 0777, true);
move_uploaded_file($_FILES["fileUpload"]["tmp_name"],$dirname."/".$_FILES["fileUpload"]["name"]);
}
// If retrieving an image
else if (isset($_GET['image'])) {
$file = $dirname."/".$_GET['image'];
// Specify as jpeg
header('Content-type: image/jpeg');
// Resize image for mobile
list($width, $height) = getimagesize($file);
$newWidth = 120.0;
$size = $newWidth / $width;
$newHeight = $height * $size;
$resizedImage = imagecreatetruecolor($newWidth, $newHeight);
$image = imagecreatefromjpeg($file);
imagecopyresampled($resizedImage, $image, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
imagejpeg($resizedImage, null, 80);
}
// If displaying images
else {
$baseURI = "http://".$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].$_SERVER['REQUEST_URI'];
$images = scandir($dirname);
$ignore = Array(".", "..");
if ($images) {
foreach($images as $curimg){
if (!in_array($curimg, $ignore)) {
echo "Image: ".$curimg."<br>";
echo "<img src='".$baseURI."?image=".$curimg."&rnd=".uniqid()."'><br>";
}
}
}
else {
echo "No images on server";
}
}
?>
我发现$_FILES是空的我只得到Array().我不知道代码有什么问题,因为我在多个问题和示例中看到了相同的代码.
我使用了两个Web服务器但结果相同.
user_img文件夹有777访问权限.
解决方法:
最后我修复了问题,修复很简单.
我给出的网址是http://sample.com/upload_img.php.我只需要在网址中添加www.因此,工作网址为http：//www/sample.com/upload_img.php.
它解决了这个问题.
标签：javascript,php,cordova,phonegap-plugins 来源： https://codeday.me/bug/20190929/1833339.html