MultipartFormDataInput 获取图片名称

@POST 
@Path("/upload") 
@Consumes("multipart/form-data") 
public Response uploadFile(MultipartFormDataInput input) { 

    String fileName = ""; 
    Map<String, List<InputPart>> formParts = input.getFormDataMap(); 

    List<InputPart> inPart = formParts.get("file"); // "file" should match the name attribute of your HTML file input 
    for (InputPart inputPart : inPart) { 
    try { 
     // Retrieve headers, read the Content-Disposition header to obtain the original name of the file 
     MultivaluedMap<String, String> headers = inputPart.getHeaders(); 
     String[] contentDispositionHeader = headers.getFirst("Content-Disposition").split(";"); 
     for (String name : contentDispositionHeader) { 
     if ((name.trim().startsWith("filename"))) { 
      String[] tmp = name.split("="); 
      fileName = tmp[1].trim().replaceAll("\"","");   
     } 
     } 

     // Handle the body of that part with an InputStream 
     InputStream istream = inputPart.getBody(InputStream.class,null); 

     /* ..etc.. */ 
     } 
    catch (IOException e) { 
     e.printStackTrace(); 
    } 
    } 

    String msgOutput = "Successfully uploaded file " + filename; 
    return Response.status(200).entity(msgOutput).build(); 
}