java 如何在 Jersey 中获取 MIME 类型的上传文件
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How to get MIME type of uploaded file in Jersey
提问by Cristian Vrabie
I have a standard upload endpoint in Jersey:
我在泽西岛有一个标准的上传端点：
@POST
@Secure
@Consumes("multipart/form-data")
public Response upload( @Context final HttpHeaders hh,
@FormDataParam("fileaaa") final FormDataContentDisposition disposition,
@FormDataParam("fileaaa") final InputStream input,
How can I get the MIME type of the uploaded file?
如何获取上传文件的 MIME 类型？
If I do disposition.getTypethis gets me the MIME type of the form; in this case form-data.
如果我这样做disposition.getType，我将获得表单的 MIME 类型；在这种情况下form-data。
I know the information is there somewhere; the HTTP message should be something like:
我知道信息在某处；HTTP 消息应该是这样的：
-----------------------------7d01ecf406a6
Content-Disposition: form-data; name="input_text"
mytext
-----------------------------7d01ecf406a6
Content-Disposition: form-data; name="fileaaa";
filename="C:\Inetpub\wwwroot\Upload\pic.gif"
Content-Type: image/gif
(binary content)
-----------------------------7d01ecf406a6--
回答by Cristian Vrabie
I solved this by letting Jersey inject a BodyPartparameter in my method. getMediaType() on the body part gives me what I needed:
我通过让 Jersey在我的方法中注入一个BodyPart参数来解决这个问题。身体部位的 getMediaType() 给了我我需要的东西：
@POST
@Secure
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response upload(/*other parms */, @FormDataParam("fileaaa") final FormDataBodyPart body) {
String mimeType = body.getMediaType().toString();
//handle upload
}
