Java使用Ajax实现跨域上传图片功能

<script type="text/JavaScript" src="js/jquery.js"></script><script type="text/javascript" src="js/jquery.form.js"></script><form id="upload-form" enctype="multipart/form-data" method="post" action="http://u01.madailvxing.cn/images/upload.php">        <input type="file" name="pic[]">        <input type="hidden" name="MAX_FILE_SIZE" value="10000000">        <input type="submit" name="sub" value="上传" onclick="submitImgSize1Upload()">     </form><script type="text/javascript">function submitImgSize1Upload() {var postData = function( form , callback){var form = document.getElementById("upload-form");//获取表单的数据var formdata = new FormData( form );//格式化表单数据$.ajax({url: “跨域的url",type: "post",data: formdata,  //处理表单数据dataType: 'json',processData: false,contentType: false,//success: function(data){// alert(data);// },// error: function(data){// console.log(data);// }})$(".submit-btn").on("click",function(){postData($(this).parents("form")[0]);}) }