Hi J.F., I made your changes and also added some informational displays. Also, I had to close the connection after the first method call because I got warning messages about SimpleHttpConnectionManager being used incorrectly.
I reran the app, but the page returned from the second method call is the same as the first. Is there another change I have to make? As I mentioned, the form on the page is: <form action="http://www.domaintools.com/go/"; method="get"> <input type="hidden" name="service" value="whois" /> <input name="q" type="text" value="" maxlength="60" size="40" style="font-size: 256%"/> <input type="submit" value="Lookup" size="40" style="font-size: 206%" /> Thanks very much! Following is my revised source. import java.io.IOException; import java.io.InputStream; import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler; import org.apache.commons.httpclient.Header; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.HttpException; import org.apache.commons.httpclient.HttpStatus; import org.apache.commons.httpclient.NameValuePair; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.httpclient.params.HttpMethodParams; public class QuestionToPost { private static String URL = "http://whois.domaintools.com//";; private static String domainToLookup = "www.ezines.com"; public static void main(String[] args) { System.out.println("============"); System.out.println("Starting App"); System.out.println("============"); Header responseHeaders[] = null; // Create an instance of HttpClient. HttpClient client = new HttpClient(); // Create a method instance. GetMethod method = new GetMethod(URL); method.setFollowRedirects(true); // Provide custom retry handler is necessary method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(3, false)); try { //////////////////////////////////////////////// // Get the page with the form //////////////////////////////////////////////// // Execute the method. System.out.println("--------------------------"); System.out.println("INFO"); System.out.println("Getting " + URL + " page."); System.out.println("--------------------------"); int statusCode = client.executeMethod(method); if (statusCode != HttpStatus.SC_OK) { System.err.println("Method failed: " + method.getStatusLine()); } //////////////////////////////////////////////// // Close old connection to eliminate warning message //////////////////////////////////////////////// System.out.println("--------------------------"); System.out.println("INFO"); System.out.println("Closing old connection."); System.out.println("--------------------------"); method.releaseConnection(); //////////////////////////////////////////////// // Prepare parameters //////////////////////////////////////////////// //****************** OLD *********************** NameValuePair[] params = { new NameValuePair("action", "http://www.domaintools.com/go/";), new NameValuePair("service", "whois"), new NameValuePair("q", domainToLookup) }; //****************** END OLD BLOCK ************* //*************TRY THIS:*********************************** method = new GetMethod( params[0].getValue()); //"http://www.domaintools.com/go/"; method.setFollowRedirects(true); // Provide custom retry handler is necessary method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(3, false)); for ( int i=1; i < params.length; i++) method.getParams().setParameter( params[i].getName(), params[i].getValue()); System.out.println("--------------------------"); System.out.println("INFO"); System.out.println("Posting form"); System.out.println("--------------------------"); statusCode = client.executeMethod( method); if (statusCode != HttpStatus.SC_OK) { System.out.println("Method failed: " + method.getStatusLine()); } else { //////////////////// //harvest response info, etc.... ////////////////////////// System.out.println("--------------------------"); System.out.println("INFO"); System.out.println("Page contents:"); System.out.println("--------------------------"); printPageFromInputStream(method.getResponseBodyAsStream()); } //**************end of TRY THIS comment *************************** } catch (HttpException e) { System.err.println("Fatal protocol violation: " + e.getMessage()); e.printStackTrace(); } catch (IOException e) { System.err.println("Fatal transport error: " + e.getMessage()); e.printStackTrace(); } finally { // Release the connection. method.releaseConnection(); System.out.println("============"); System.out.println("App Finished"); System.out.println("============"); } } // END main() public static void printPageFromInputStream(InputStream is) { byte[] b = new byte[50000]; int ret = 0; int offset = 0; try { while (ret != -1) { ret = is.read(b, offset, 1); System.out.print( (char) b[offset]); offset++; } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } // END printPageFromInputStream } -----Original Message----- From: J.-F. Rompre [mailto:[EMAIL PROTECTED] Sent: Saturday, August 23, 2008 6:18 PM To: Commons Users List Subject: Re: How Add Form Parameters to a Get Request It seems like there is not much missing - only to connect your form info with the request, then fire off another request - using setParameter( name, value) instead of NameValuePairs (only used with PostMethod), so I would try (my changes commented): import java.io.IOException; import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler; import org.apache.commons.httpclient.Header; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.HttpException; import org.apache.commons.httpclient.HttpStatus; import org.apache.commons.httpclient.NameValuePair; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.httpclient.params.HttpMethodParams; public class QuestionToPost { private static String URL = "http://whois.domaintools.com//";; private static String domainToLookup = "www.ezines.com"; public static void main(String[] args) { Header responseHeaders[] = null; // Create an instance of HttpClient. HttpClient client = new HttpClient(); // Create a method instance. GetMethod method = new GetMethod(URL); method.setFollowRedirects(true); // Provide custom retry handler is necessary method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(3, false)); try { //////////////////////////////////////////////// // Get the page with the form //////////////////////////////////////////////// // Execute the method. int statusCode = client.executeMethod(method); if (statusCode != HttpStatus.SC_OK) { System.err.println("Method failed: " + method.getStatusLine()); } responseHeaders = method.getResponseHeaders(); //////////////////////////////////////////////// // Prepare parameters //////////////////////////////////////////////// NameValuePair[] params = { new NameValuePair("action", "http://www.domaintools.com/go/";), new NameValuePair("service", "whois"), new NameValuePair("q", domainToLookup) }; // What do I do next? //*************TRY THIS:*********************************** method = new GetMethod( params[0].getValue()); //" http://www.domaintools.com/go/"; for ( int i=1; i < params.length; i++) method.getParams().setParameter( params[i].getName(), params[i].getValue()); client.execute( method); //////////////////// //harvest response info, etc.... ////////////////////////// //**************end of TRY THIS comment *************************** } catch (HttpException e) { System.err.println("Fatal protocol violation: " + e.getMessage()); e.printStackTrace(); } catch (IOException e) { System.err.println("Fatal transport error: " + e.getMessage()); e.printStackTrace(); } finally { // Release the connection. method.releaseConnection(); } } } On Sat, Aug 23, 2008 at 2:51 PM, Murphy Steve <[EMAIL PROTECTED]>wrote: > Please excuse this horrible posting. I'm completely new to commons > HttpClient and I'm struggling. > > I'm using commons HttpClient to post a get request to a page that has > a form. I'm following instructions on the programming primer at > http://hc.apache.org/httpcomponents-client/primer.html > > The page has the followng definition for its form: > > <form action="http://www.domaintools.com/go/"; method="get"> <input > type="hidden" name="service" value="whois" /> <input name="q" > type="text" value="" maxlength="60" size="40" > style="font-size: 256%"/> > <input type="submit" value="Lookup" size="40" style="font-size: 206%" > /> > > So I'm creating parameters like so: > private static String domainToLookup = "www.ezines.com"; > NameValuePair[] params = { new NameValuePair("action", > "http://www.domaintools.com/go/";), > new NameValuePair("service", "whois"), new NameValuePair("q", > domainToLookup) }; > > Question 1: Is this the correct way to contstruct form parameters? > Question 2: Now that I've defined parameters I need to somehow add > them to my request. How do I do this? > > Are there any code samples this scenario? > > Below is a listing of my shameful hack: > > import java.io.IOException; > import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler; > import org.apache.commons.httpclient.Header; > import org.apache.commons.httpclient.HttpClient; > import org.apache.commons.httpclient.HttpException; > import org.apache.commons.httpclient.HttpStatus; > import org.apache.commons.httpclient.NameValuePair; > import org.apache.commons.httpclient.methods.GetMethod; > import org.apache.commons.httpclient.params.HttpMethodParams; > > public class QuestionToPost { > private static String URL = "http://whois.domaintools.com//";; > > private static String domainToLookup = "www.ezines.com"; > > public static void main(String[] args) > { > Header responseHeaders[] = null; > // Create an instance of HttpClient. > HttpClient client = new HttpClient(); > // Create a method instance. > GetMethod method = new GetMethod(URL); > method.setFollowRedirects(true); > // Provide custom retry handler is necessary > > method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, > new DefaultHttpMethodRetryHandler(3, false)); > > try > { > //////////////////////////////////////////////// > // Get the page with the form > //////////////////////////////////////////////// > // Execute the method. > int statusCode = client.executeMethod(method); > > if (statusCode != HttpStatus.SC_OK) { > System.err.println("Method failed: " + > method.getStatusLine()); > } > responseHeaders = method.getResponseHeaders(); > //////////////////////////////////////////////// > // Prepare parameters > //////////////////////////////////////////////// > NameValuePair[] params = > { > new NameValuePair("action", > "http://www.domaintools.com/go/";), > new NameValuePair("service", "whois"), > new NameValuePair("q", domainToLookup) > }; > > // What do I do next? > > } catch (HttpException e) { > System.err.println("Fatal protocol violation: " + > e.getMessage()); > e.printStackTrace(); > } catch (IOException e) { > System.err.println("Fatal transport error: " + > e.getMessage()); > e.printStackTrace(); > } > > finally { > // Release the connection. > method.releaseConnection(); > } > } > } > > Thanks. > Steve-O > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
