httpurlconnection - DataOutputStream to substitute MultipartEntity -

i using apache http upload file (among other parameters) server using code

public httpresponse fileupload(final file file, string auth) throws exception {      httpclient httpclient = new defaulthttpclient();     httppost httppost = new httppost(uploadurl);     filebody binary = new filebody(file);       multipartentity reqentity = new multipartentity();     reqentity.addpart("data_file", binary);     reqentity.addpart("auth", new stringbody(auth));     reqentity.addpart("filename", new stringbody(file.getname()));      httppost.setentity(reqentity);       httpresponse response = httpclient.execute(httppost);      return response;} 

this working need move httpurlconnection since apache methods (and multipartentity) deprecated. instead of doing multiparentity, can create dataoutputstream , use writebytes? how input file write bytes? byte byte or or there easier, cleaner way?

public httpurlconnection uploadfile(final file file, string auth) throws exception {       httpurlconnection conn;     url url = new url(uploadurl);     conn = (httpurlconnection) url.openconnection();     conn.setreadtimeout(read_timeout);     conn.setconnecttimeout(connection_timeout);     conn.setusecaches(false);     conn.setdoinput(true);     conn.setdooutput(true);     conn.setrequestmethod("post");       conn.connect();     dataoutputstream writer = new dataoutputstream(conn.getoutputstream());      writer.writebytes("data_file");    // send file here     writer.flush();      //send auth     writer.writebytes("auth");     writer.writebytes(auth);     writer.flush();     //send filename     writer.writebytes("filename");     writer.writebytes(file.getname());     writer.flush();        return conn; }  

thanks!