标签：
这里要使用plupload插件
前端js
<script>
var uploader = new plupload.Uploader({ //实例化一个plupload上传对象
browse_button: ‘choose‘,
url: ‘../ajax_image‘,
flash_swf_url: ‘../help/js/Moxie.swf‘,
silverlight_xap_url: ‘‘,
filters: {
mime_types: [ //只允许上传图片文件
{ title: "图片文件", extensions: "jpg,gif,png" }
]
}
});
uploader.init(); //初始化
//绑定文件添加进队列事件
uploader.bind(‘FilesAdded‘, function (uploader, files) {
// alert(files[0].size);
var msgFlg = 0;
for (var i = 0, len = files.length; i < len; i++) {
if (files[i].size > 81920) {
uploader.files.splice(i, 1);
msgFlg = 1;
}
else {
!function (i) {
previewImage(files[i], function (imgsrc) {
$(‘#file-list‘).html($(‘#file-list‘).html() +
‘<div style="float:left" class="pic_list" id="‘ + files[i].id + ‘">‘
+ ‘ (‘ + plupload.formatSize(files[i].size) +
‘)<a href="###" class="pic_delete" data-val=‘ + files[i].id +
‘>删除</a><br/>‘ +
‘<img class="listview" width="90" height="60" src="‘ + imgsrc + ‘" name="‘ + files[i].name + ‘" /></div>‘);
})
}(i);
}
}
if (msgFlg == 1) {
alert("上传图片小于80K");
return false;
}
if (uploader.files.length > 0) {
//alert(‘请选择图片！‘);
//return false;
uploader.start();
}
});
$(document).on(‘click‘, ‘.pic_list a.pic_delete‘, function () {
$(this).parent().remove();
var toremove = ‘‘;
var id = $(this).attr("data-val");
for (var i in uploader.files) {
if (uploader.files[i].id === id) {
toremove = i;
$("."+id).remove();
}
}
uploader.files.splice(toremove, 1);
});
uploader.bind("UploadComplete", function (uploader, file) {
//console.log(uploader.files[0].id);
html = ‘‘;
for(i=0;i<uploader.files.length;i++)
{
html += ‘<input type="hidden" name="xx[]" class="‘+uploader.files[i].id+‘" />‘;
}
console.log(html);
$("#test").html(html);
//<input type="hidden" name="xx[]" class="">
//file是文件路径
});
/* function exit() {
window.parent.location.href = window.parent.location.href;
} */
//plupload中为我们提供了mOxie对象
//有关mOxie的介绍和说明请看：https://github.com/moxiecode/moxie/wiki/API
function previewImage(file, callback) {//file为plupload事件监听函数参数中的file对象,callback为预览图片准备完成的回调函数
if (!file || !/image\//.test(file.type)) return; //确保文件是图片
if (file.type == ‘image/gif‘) {//gif使用FileReader进行预览,因为mOxie.Image只支持jpg和png
var fr = new mOxie.FileReader();
fr.onload = function () {
callback(fr.result);
fr.destroy();
fr = null;
}
fr.readAsDataURL(file.getSource());
} else {
var preloader = new mOxie.Image();
preloader.onload = function () {
//preloader.downsize(550, 400);//先压缩一下要预览的图片,宽300，高300
var imgsrc = preloader.type == ‘image/jpeg‘ ? preloader.getAsDataURL(‘image/jpeg‘, 80) : preloader.getAsDataURL(); //得到图片src,实质为一个base64编码的数据
callback && callback(imgsrc); //callback传入的参数为预览图片的url
preloader.destroy();
preloader = null;
};
preloader.load(file.getSource());
}
}
$("#update").bind(‘click‘, function () { //这里看个人需求 你可以直接选择后马上提交
if (uploader.files.length > 0) {
//alert(‘请选择图片！‘);
//return false;
uploader.start();
}
})
</script>
服务端代码php
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); header("Cache-Control: no-store, no-cache, must-revalidate"); header("Cache-Control: post-check=0, pre-check=0", false); header("Pragma: no-cache"); /* // Support CORS header("Access-Control-Allow-Origin: *"); // other CORS headers if any... if ($_SERVER[‘REQUEST_METHOD‘] == ‘OPTIONS‘) { exit; // finish preflight CORS requests here } */ // 5 minutes execution time @set_time_limit(5 * 60); // Uncomment this one to fake upload time // usleep(5000); $public_path = public_path(); $imagesDir = ‘/upload/images‘; // Settings $targetDir = $public_path . $imagesDir; //$targetDir = ‘uploads‘; $cleanupTargetDir = true; // Remove old files $maxFileAge = 5 * 3600; // Temp file age in seconds // Create target dir if (!file_exists($targetDir)) { @mkdir($targetDir); } // Get a file name if (isset($_REQUEST["name"])) { $fileName = time() . rand(1000, 9999).$_REQUEST["name"]; } elseif (!empty($_FILES)) { $fileName = time() . rand(1000, 9999).$_FILES["file"]["name"]; } else { $fileName = uniqid("file_"); } $filePath = $targetDir . DIRECTORY_SEPARATOR . $fileName; // Chunking might be enabled $chunk = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0; $chunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 0; // Remove old temp files if ($cleanupTargetDir) { if (!is_dir($targetDir) || !$dir = opendir($targetDir)) { die(‘{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "Failed to open temp directory."}, "id" : "id"}‘); } while (($file = readdir($dir)) !== false) { $tmpfilePath = $targetDir . DIRECTORY_SEPARATOR . $file; // If temp file is current file proceed to the next if ($tmpfilePath == "{$filePath}.part") { continue; } // Remove temp file if it is older than the max age and is not the current file if (preg_match(‘/\.part$/‘, $file) && (filemtime($tmpfilePath) < time() - $maxFileAge)) { @unlink($tmpfilePath); } } closedir($dir); } // Open temp file if (!$out = @fopen("{$filePath}.part", $chunks ? "ab" : "wb")) { die(‘{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}‘); } if (!empty($_FILES)) { if ($_FILES["file"]["error"] || !is_uploaded_file($_FILES["file"]["tmp_name"])) { die(‘{"jsonrpc" : "2.0", "error" : {"code": 103, "message": "Failed to move uploaded file."}, "id" : "id"}‘); } // Read binary input stream and append it to temp file if (!$in = @fopen($_FILES["file"]["tmp_name"], "rb")) { die(‘{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}‘); } } else { if (!$in = @fopen("php://input", "rb")) { die(‘{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}‘); } } while ($buff = fread($in, 4096)) { fwrite($out, $buff); } @fclose($out); @fclose($in); // Check if file has been uploaded if (!$chunks || $chunk == $chunks - 1) { // Strip the temp .part suffix off rename("{$filePath}.part", $filePath); } echo $imagesDir. DIRECTORY_SEPARATOR .$fileName;
插件包自己去下吧
标签：
原文地址：http://www.cnblogs.com/yixi978/p/5765432.html
