我正在尝试将文件上传到我的Java JAX-RS（Jersey）Web服务。
我的方法签名在服务器端，如果有兴趣的人是这样的话;
upload(@FormDataParam("file") InputStream uploadedStream, @FormDataParam("file") FormDataContentDisposition fileDetail, @FormDataParam("question") String req_question, @Context HttpHeaders headers)
当我尝试使用multipart / form-data上传Postman（客户端进行测试）的文件时，它正常工作。当我用Fiddler嗅闻时，我看到了这一点;
POST http://localhost:8080/application/question/post HTTP/1.1
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryT79BovKwL6ObBceu
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.6,en;q=0.4
------WebKitFormBoundaryT79BovKwL6ObBceu
Content-Disposition: form-data; name="file"; filename="PARS.png"
Content-Type: image/png
[HERE SOME STRANGE RAW BINARY DATA]
------WebKitFormBoundaryT79BovKwL6ObBceu
Content-Disposition: form-data; name="question"
{"title": "This is title!", "fk_field_id":1}
------WebKitFormBoundaryT79BovKwL6ObBceu--
正如您所看到的，它具有正确的发送数据类型的不同。但是当我尝试使用Ionic / Angular实现相同的上传时，我的请求看起来像这样;
POST http://localhost:8080/application/question/post HTTP/1.1
Content-Type: multipart/form-data
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.6,en;q=0.4
/Exif II* [SOME STRANGE RAW BINARY DATA]
我只看到二元，我发送的参数没有区别也没有标志。这是我的Angular代码，它被响应为失败。
let options: FileUploadOptions =
{
fileKey: 'file',
headers: headers,
params: {"title": "This is title!", "fk_field_id":1} // Actually I am getting this as method parameter yet to shorten code I moved it here
};
path = {MY ENDPOINT IN SERVER}
filePath = file:///storage/emulated/0/Android/data/io.ionic.starter/cache/1497313256081.jpg // Getting as method param
fileTransfer.upload(filePath, path, options).then(things => {
//Some console.log
});