POST in Java vs Python

[skullmunky]

I have some pretty straightforward code in python using a POST request, and want to do the same in Java. The python version works fine, but the Java version gives me a 500 server error when I do connection.getInputStream(). What's python able to handle that Java isn't handling?



#python version
import httplib,urllib

params=urllib.urlencode ( {'food':'cheese','taste':'yummy'})

headers={"Content-type": "application/x-www-form-urlencoded","Accept": "text/plain"}
conn = httplib.HTTPConnection("www.mysite.com")
conn.request("POST","/myscript.php",params,headers)
response=conn.getresponse()
print response.status, response.reason
data=response.read()
print data
conn.close()




URL url;

try {
url = new URL("http://mysite.com/myscript.php");

HttpURLConnection connection = (HttpURLConnection) url.openConnection();

connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setDoInput(true);

connection.setRequestProperty
("Content-Type", "application/x-www-form-urlencoded");


println("opened connection");

OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream(),"UTF-8");
out.write(URLEncoder.encode("food=cheese&taste=yummy","UTF-8"));
out.flush();
out.close();

BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));

String inputLine;

while ((inputLine = in.readLine()) != null)
System.out.println(inputLine);

in.close();

} catch (MalformedURLException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}


The line it dies on is


BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));




java.io.IOException: Server returned HTTP response code: 500 for URL: http://mysite.com/myscript.php

[Some Penguin]

I suspect that you're URL-encoding the parameter string as a single string, instead of URL encoding just the parameters. That would turn your ampersand into an encoded ampersand.

[slavik]

Another thing, please write out some kind of message before you print a stack trace ...

[skullmunky]

Bingo. Thanks!