JQuery 复制粘贴上传图片插件（textarea 和 tinyMCE）
支持 Ctrl+C/Ctrl+V 上传，支持拖拽上传，也支持 QQ/微信截图上传。
textarea使用（返回markdown格式的图片格式）：
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8" />
<script src="scripts/jquery.js"></script>
<script src="scripts/paste-upload-image.js"></script>
</head>
<body>
<textarea name="txtContent" id="txtContent" style="width:500px;height:200px;"></textarea>
<script>
$("#txtContent").pasteUploadImage("demo-upload.php");//bind textarea
</script>
</body>
</html>tinyMCE使用：
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8" />
<script src="scripts/jquery.js"></script>
<script src="tinymce/tinymce.js"></script>
</head>
<body>
<textarea name="mceContent" id="mceContent"></textarea>
<script>
$("#txtContent").pasteUploadImage("demo-upload.php");
tinymce.init({
selector: '#mceContent',
height: 500,
plugins: [
'pasteUpload', //add pasteUpload plugin
'advlist autolink lists link image charmap print preview anchor',
'searchreplace visualblocks code fullscreen',
'insertdatetime media table contextmenu code'
],
toolbar: 'insertfile undo redo | styleselect | bold italic | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | link image',
content_css: [
'//fast.fonts.net/cssapi/e6dc9b99-64fe-4292-ad98-6974f93cd2a2.css',
'//www.tinymce.com/css/codepen.min.css'
]
});
</script>
</body>
</html>后端处理：
Java版:
public class ImageUploaderController : Controller
{
[AllowCors("sub.example.com")]//跨域访问
[HttpPost]
public async Task<string> ProcessPasteUpload(HttpPostedFileBase imageFile, string mimeType)
{
///to do...
}
}
public class AllowCorsAttribute : ActionFilterAttribute
{
private string[] _domains;
public AllowCorsAttribute(string domain)
{
_domains = new string[] { domain };
}
public AllowCorsAttribute(string[] domains)
{
_domains = domains;
}
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
var context = filterContext.RequestContext.HttpContext;
var host = context.Request.UrlReferrer?.Host;
if (host != null && _domains.Contains(host))
{
context.Response.AddHeader("Access-Control-Allow-Origin", $"http://{host}");
context.Response.AddHeader("Access-Control-Allow-Credentials", "true");
}
base.OnActionExecuting(filterContext);
}
}php版：
<?php
function upload_handle (){
$result=array ("success"=>false,"message"=>"Null");
$file_size_limit=300*1024; // 300KB
if (in_array($_FILES["imageFile"]["type"],array ("image/gif","image/jpeg","image/pjpeg","image/png"))){
if ($_FILES["imageFile"]["error"]>0){
$result['message']="error";
}
elseif ($_FILES["imageFile"]["size"]>$file_size_limit){
$result['message']="File too large";
}else {
$file_name="upload/".md5_file($_FILES["imageFile"]["tmp_name"]).str_replace("image/",".",$_FILES["imageFile"]["type"]);
if (!file_exists($file_name)){
move_uploaded_file($_FILES["imageFile"]["tmp_name"],$file_name);
}
$result['success']=true;
$result['message']=$file_name;
}
}else {
$result['message']="Invalid file";
}
return $result;
}
$origin = isset($_SERVER['HTTP_ORIGIN'])? $_SERVER['HTTP_ORIGIN'] : '';
$allow_origin = array(
'http://sub1.example.com',
'http://sub2.example.com'
);
if(in_array($origin, $allow_origin)){
header('Access-Control-Allow-Origin:'.$origin); //跨域访问
header("Access-Control-Allow-Credentials", "true");
}
header('Content-type: application/json');
echo(json_encode(upload_handle()));
?>效果展示：
