urlconnection

i use java.net.URLConnection to send image and some parameters to server using POST method. My code below is works fine to send image to server, but i'm bit confused to attach some parameter and send to server in one time. I've followed here and here but i think its different method with my code. Here is my snippet code bellow : import java.io.DataOutputStream; import java.io.File; import java.io.FileInputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import android.app.Activity; import android.app.ProgressDialog; import android.util.Log;

URL url = new URL("http://www.example.com/comment"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setDoOutput(true); connection.setRequestMethod("POST"); Is connection.setRequestProperty(key, value); the same as OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream()); writer.write("key=" + value); writer.close(); ? If not, please correct me. No, it is not. The URLConnection#setRequestProperty() sets a request header . For HTTP requests you can find all possible headers here . The writer just writes the request body . In case of

I'm working on a project where I'm creating a class to run http client requests (my class acts as a client). It takes in a url and a request method (GET, POST, PUT, etc) and I want to be able to parse the URL and open a HttpsURLConnection or HttpURLConnection based on whether it is https or http (assume the given urls will always be correct). If I do the following: URLConnection conn = url.openConnection(); Then that will automatically create a URLConnection that can accept both http and https, but if I do this then I can't find any way to set a request method (GET, POST, etc), since only the

I'm using the following code for downloading file in my Android project: URL url = new URL(fileUrl); URLConnection conection= url.openConnection(); conection.setDoOutput(true); conection.connect(); int lenghtOfFile = conection.getContentLength(); If fileUrl is apk, lenghtOfFile always return -1. But if it is image, video type,... lenghtOfFile return is exactly. Why ? I'm using eclipse, Android SDK revision 23. The content length is not always available because by default Android request a GZIP compressed response. Source: Android documentation . Quoting the link: By default, this