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Tip of the Day
Language: Java
Expertise: Beginner
Oct 12, 2005

WEBINAR:

On-Demand

Application Security Testing: An Integral Part of DevOps


Send and Recieve Messages Using a CGI Java Application

The following code shows you how to send and receive CGI messages from a Java application:

import java.net.*;
import java.io.*;

class POSTrequest{

URL url=null;
URLConnection URLcon=null;

OutputStreamWriter OSW=null;
BufferedReader BR=null;
PrintStream PS=null;

public void GetReady()
            {   
            try {            
                //it may be any other CGI
                url=new URL("http://ludlow.dns2go.com/cgi-bin/plot/cut_basemap.pl");
               URLcon=url.openConnection();                
                
                URLcon.setDoInput(true);
                URLcon.setDoOutput(true);
                
                //disable caching
                URLcon.setUseCaches(false);
                
                URLcon.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
                
                SendRequest();
                }catch(MalformedURLException e)
	       {System.out.println("Error 1:"+e.getMessage());
                }catch(IOException e)
                      {System.out.println("Error 2:"+e.getMessage()); 
                }catch(ClassCastException e)
                      {System.out.println("Error:"+e.getMessage());}
                }
                
void SendRequest()throws IOException
                {                                           
                OSW=new OutputStreamWriter(URLcon.getOutputStream());
                
                String request=URLEncoder.encode("LONGDEG","UTF-8")+
"="+URLEncoder.encode
("76","UTF-8")+"&"+URLEncoder.encode("LONGMIN","UTF-8")+
"="+URLEncoder.encode("37.3","UTF-8");
                request+="&"+URLEncoder.encode("LATDEG","UTF-8")+
"="+URLEncoder.encode("2","UTF-
")+"&"+URLEncoder.encode("LATMIN","UTF-8")+"="+URLEncoder.encode("34.84","UTF-8");
                request+="&"+URLEncoder.encode("CROPSIZE","UTF-8")
+"="+URLEncoder.encode
("20x15","UTF-8")+"&"+URLEncoder.encode("OUTPUTSIZE","UTF-8")+
"="+URLEncoder.encode
("8x6","UTF-8");
                
                OSW.write(request);
                               
                OSW.flush();
                OSW.close();
                
                GetAnswer();
                }
                
void GetAnswer() throws IOException
               {                
               //get the answer in a HTML file            
               BR=new BufferedReader(new InputStreamReader(URLcon.getInputStream()));
               PS=new PrintStream(new FileOutputStream(".\\output.html"));         
               String answer;
               while (null!=((answer=BR.readLine())))
                   {
                   System.out.println (answer);
                   PS.println(answer);
                   }
                BR.close();         
                PS.close();                                                       		                    
                }
           
public void POSTanswer()
    {   
    try {   
        //view answer
        String command = "C:\\Program Files\\Mozilla Firefox\\firefox.exe
file:///D:/JEditor/programe/network/output.html";
        Process child = Runtime.getRuntime().exec(command);
        }catch(IOException e)
                     {System.out.println("Error 5:"+e.getMessage());}
    }           
}           

public class POST{
	public static void main(String[] args)
      {
	POSTrequest t=new POSTrequest();            
      t.GetReady();       
      t.POSTanswer();          
	}
}
Leonard Anghel
 
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