Java help

[Garm]

Hi all. I'm trying to hack together some java to help with a project at work. My knowledge of programming is what can charitably called limited and I thought maybe someone could help me out. Not sure if this belongs here or in the Coding forum. If this is the wrong place I won't have hurt feelings if it gets moved.

I'm trying to send some HTTP commands using URLConnection and HttpURLConnection. I can send a GET request just fine but my POST request isn't working quite as I want it to. Here's my code:

Spoiler:

Code: Select all

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.*;
import java.io.*;
public class AutoTest {
public static void main (String[] args){
   
   BufferedReader rd = null;
   StringBuilder sb = null;
   String line = null;   
   String command = COMMAND
String phoneIP="IPADDRESS";
String[] array={"Value1","Value2","Value3","Value4"};

OutputStream output = null;

int i=0;
try {
while (i<array.length+1) {
String url = phoneIP + command + "?" + array[i];
HttpURLConnection httpConnection = (HttpURLConnection) new URL(url).openConnection();
httpConnection.setRequestMethod("POST");
i++;
rd  = new BufferedReader(new InputStreamReader(httpConnection.getInputStream()));
sb = new StringBuilder();

while ((line = rd.readLine()) != null)
{
    sb.append(line + '\n');
}

System.out.println(sb.toString());
         }
      } catch (MalformedURLException e) {
         // TODO Auto-generated catch block
         e.printStackTrace();
      } catch (IOException e) {
         // TODO Auto-generated catch block
         e.printStackTrace();
      } finally {
         if (output != null) try {output.close();} catch (IOException logOrIgnore){}
      }
   }
}

What happens right now is that the code sends out a command that looks like "POST /COMMAND?Value1 HTTP/1.1" From this I get a "405 Method Not Allowed." When I send the same command and value using cURL the packet request looks like "POST COMMAND HTTP/1.1 (aplication/x-www-form-urlencoded)" and Value1 is on the interior of the packet. I've searched all over Stackoverflow (they've got a nice tutorial on URLConnection) but can't find a solution to this problem. Any ideas? I can provide more information but need prompting.

[brant]

I don't think you're using HTTPUrlConnection correctly to POST. It's hard for me to distinguish the POST data in your code as well. A POST request should look something like this:

Code: Select all

POST /login.jsp HTTP/1.1
Host: www.mysite.com
User-Agent: Mozilla/4.0
Content-Length: 27
Content-Type: application/x-www-form-urlencoded

userid=joe&password=guessme


Notice the POST data is not included in the URL, and instead is included in the payload. You've declared an output stream, but haven't actually used it here as well.

http://www.xyzws.com/Javafaq/how-to-use-httpurlconnection-post-data-to-web-server/139
This example seems to illustrate a proper POST request fairly well, and you should be able to adapt it to your code.

[Garm]

I think that content type is what I'm missing. I may have missed that part of the tutorial I was reading but there's a good example in your link. Thanks. I'll let you know when I get this working.