question: @ Override public String post ( String url , int timeout , String userAgent , Map < String , String > formData ) { String result = null ; ByteArrayOutputStream baos = null ; try { baos = new ByteArrayOutputStream ( ) ; post ( url , baos , timeout , userAgent , formData ) ; result = new String ( baos . toByteArray ( ) , "UTF-8" ) ; } catch ( Throwable e ) { LOG . error ( "Error posting data via http: " + e . getMessage ( ) , e ) ; } finally { closeQuietly ( baos ) ; } return result ; }
target:  Post a form Content-type: application/x-www-form-urlencoded