uploader上传文件至webapi的问题

我用 html 写的 普通的 form 可以正常 上传文件，但是手机用 uploader的 时候 就会报这个错误.```javascript
{
"UUID": "uploader181482715946624",
"url": "http://192.168.1.144:24986/api/FileUpload/Post",
"options": {
"method": "POST",
"blocksize": 409600,
"priority": 100
},
"uploadedSize": 0,
"totalSize": 0,
"responseText": "",
"method": "POST",
"timeout": 120,
"retry": 3,
"retryInterval": 30,
"priority": 100,
"eventHandlers": {

},
"requestHeaders": {

},
"responseHeaders": {

},
"noParseResponseHeader": null,
"cacheReponseHeaders": {

}
}