Sending an http request

Question

Hi,
I want to send an http request with a string(this is an xml string)which will give me a response which contains an xml string again.Can anybody tell me how can i do it in java.Any sample code will be a great help
thanks in advance.

Answer 1

This is a example, hope to be useful for you.
String xml = "<?xml version="1.0" encoding="GBK"?>"
+ "<operation_info>"
+ "<request_code>11000008</request_code>"
+ "<id_number>13148709165</id_number>"
+ "<id_type>2</id_type>"
+ "<session_id>100000002226</session_id>"
+ "<device_uid>100000000005</device_uid>"
+ "</operation_info>";
String http_url = "http://127.0.0.1:8888/protocol";
URL sendUrl = new URL(http_url);
URLConnection urlCon = sendUrl.openConnection();
urlCon.setDoOutput(true);
urlCon.setDoInput(true);
HttpURLConnection httpConnection = (HttpURLConnection) urlCon;
httpConnection.setRequestMethod("POST");
httpConnection.setRequestProperty("Content-Type", "text/xml;charset=GBK");
httpConnection.setRequestProperty("Content-Length", Integer.toString(xml.length()));
PrintStream ps=null;
try {
ps = new PrintStream(httpConnection.getOutputStream());
}catch(java.net.ConnectException e){
e.printStackTrace();
return "error"; ;
xml = URLEncoder.encode(xml);
try{
ps.write(xml.getBytes());
ps.flush();
//get response stream
String str = httpConnection.getResponseMessage();
InputStream is = httpConnection.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
str = "";
StringBuffer sb = new StringBuffer();
while ((str = br.readLine())!=null) {
sb.append(str);
is.close();
return sb.toString();
}catch(Exception e){
e.printStackTrace();
return "error"; //exception
}