title: HtmlUnit click the submitinput but the page doesn't update
body: <p>first post. I'm trying to solve an HtmlUnit problem I'm having using the dvwa. When I try to click the submit button in the doFormPost section of the code it is showing me the old page with the text field still full rather than the new page. I have tried literally everything to get this work, from putting a wait in until the page changes to having it wait 3 minutes and then recheck but haven't found what my issue can possibly be. I'm hoping someone here may know what's going on. Thank you in advance.</p>
  
  <pre><code>import java.io.IOException;
  import java.net.MalformedURLException;
  import java.util.List;
  
  import com.gargoylesoftware.htmlunit.FailingHttpStatusCodeException;
  import com.gargoylesoftware.htmlunit.WebClient;
  import com.gargoylesoftware.htmlunit.html.HtmlAnchor;
  import com.gargoylesoftware.htmlunit.html.HtmlForm;
  import com.gargoylesoftware.htmlunit.html.HtmlInput;
  import com.gargoylesoftware.htmlunit.html.HtmlOption;
  import com.gargoylesoftware.htmlunit.html.HtmlPage;
  import com.gargoylesoftware.htmlunit.html.HtmlSelect;
  import com.gargoylesoftware.htmlunit.html.HtmlSubmitInput;
  
  public class BasicFuzzer {
  
  public static void main(String[] args) throws FailingHttpStatusCodeException, MalformedURLException, IOException {
      WebClient webClient = new WebClient();
      webClient.setJavaScriptEnabled(true);
      discoverLinks(webClient);
      System.out.println("\n\n\n\n\n\n");
      doFormPost(webClient);
      webClient.closeAllWindows();
  }
  
  /**
   * This code is for showing how you can get all the links on a given page, and visit a given URL
   * @param webClient
   * @throws IOException
   * @throws MalformedURLException
   */
  private static void discoverLinks(WebClient webClient) throws IOException, MalformedURLException {
      HtmlPage page = webClient.getPage("http://localhost:8080/bodgeit");
      List&lt;HtmlAnchor&gt; links = page.getAnchors();
      for (HtmlAnchor link : links) {
          System.out.println("Link discovered: " + link.asText() + " @URL=" + link.getHrefAttribute());
      }
  }
  
  /**
   * This code is for demonstrating techniques for submitting an HTML form. Fuzzer code would need to be
   * more generalized
   * @param webClient
   * @throws FailingHttpStatusCodeException
   * @throws MalformedURLException
   * @throws IOException
   */
  private static void doFormPost(WebClient webClient) throws FailingHttpStatusCodeException, MalformedURLException, IOException {
      login(webClient,"dvwa");
      HtmlPage page = webClient.getPage("http://127.0.0.1/dvwa/vulnerabilities/sqli/");
      List&lt;HtmlForm&gt; forms = page.getForms();
      for (HtmlForm form : forms) {
          HtmlInput input = form.getInputByName("id");
          input.setValueAttribute("$id=3' OR '1'='1");
          HtmlSubmitInput submit = (HtmlSubmitInput) form.getFirstByXPath("//input[@value='Submit']");
          System.out.println(submit.&lt;HtmlPage&gt; click().getWebResponse().getContentAsString());
      }
  }
  
  /**
   * This method logs the user in based on the site URL.
   * 
   * @param loginType
   */
  private static void login(WebClient client,String loginType) {
  
      System.out.println("Login type: " + loginType + "\n");
  
      //Log in on dwva
      if(loginType.toLowerCase().contentEquals("dvwa")){
  
          ///////////////////////////////Navigate to page/////////////////////////////////////////////////
          HtmlPage thisPage = null;
          String pagename = "http://127.0.0.1/dvwa/login.php";
          try {
              thisPage = client.getPage(pagename);
          } catch (FailingHttpStatusCodeException e) {
              System.out.println("Failing HTTP Status Code Exception: " + pagename);
              return;
          } catch (MalformedURLException e) {
              System.out.println("Malformed URL Exception: " + pagename);
              return;
          } catch (IOException e) {
              System.out.println("I/O Exception: " + pagename);
              return;
          }
  
          //The strings to login
          String username = "admin";
          String password = "password";
  
          //Get the forms on the page
          List&lt;HtmlForm&gt; forms = thisPage.getForms();
          for(HtmlForm form : forms){
  
              //Input username
              HtmlInput usernameInput = form.getInputByName("username");
              usernameInput.setValueAttribute(username);
  
              //Input password
              HtmlInput passwordInput = form.getInputByName("password");
              passwordInput.setValueAttribute(password);
  
              //Click submit button
              HtmlSubmitInput submit = (HtmlSubmitInput) form.getInputByName("Login");
              try {
                  submit.&lt;HtmlPage&gt; click().getWebResponse().getContentAsString();
              } catch (IOException e) {
                  System.out.println("Something went wrong when trying to log in!");
              }
          }
          ///////////////////////////////////////////////////////////////////////////////////////////
          //Navigate to security page
          thisPage = null;
          pagename = "http://127.0.0.1/dvwa/security.php";
          try {
              thisPage = client.getPage(pagename);
          } catch (FailingHttpStatusCodeException e) {
              System.out.println("Failing HTTP Status Code Exception: " + pagename);
              return;
          } catch (MalformedURLException e) {
              System.out.println("Malformed URL Exception: " + pagename);
              return;
          } catch (IOException e) {
              System.out.println("I/O Exception: " + pagename);
              return;
          }
  
          //Change security
          HtmlSelect securitySelect = (HtmlSelect) thisPage.getElementByName("security");
          HtmlOption option = securitySelect.getOptionByValue("low");
          securitySelect.setSelectedAttribute(option, true);
  
          //Press Submit
          HtmlSubmitInput submitButton = thisPage.getElementByName("seclev_submit");
          try {
              submitButton.click();
          } catch (IOException e) {
              e.printStackTrace();
          }
  
      //Log in on bodgeit
      } else if(loginType.toLowerCase().contentEquals("bodgeit")){
  
          //Navigate to page
          HtmlPage thisPage = null;
          String pagename = "http://localhost:8080/bodgeit/login.jsp";
          try {
              thisPage = client.getPage(pagename);
          } catch (FailingHttpStatusCodeException e) {
              System.out.println("Failing HTTP Status Code Exception: " + pagename);
              return;
          } catch (MalformedURLException e) {
              System.out.println("Malformed URL Exception: " + pagename);
              return;
          } catch (IOException e) {
              System.out.println("I/O Exception: " + pagename);
              return;
          }
  
          //The string to login as the admin
          String username = "admin@thebodgeitstore.com' or '1'='1";
  
          //Get the forms on the page
          List&lt;HtmlForm&gt; forms = thisPage.getForms();
          for(HtmlForm form : forms){
  
              //Input username
              HtmlInput usernameInput = form.getInputByName("username");
              usernameInput.setValueAttribute(username);
  
              //Click submit button
              HtmlSubmitInput submit = (HtmlSubmitInput) form.getFirstByXPath("//input[@id='submit']");
              try {
                  submit.&lt;HtmlPage&gt; click().getWebResponse().getContentAsString();
              } catch (IOException e) {
                  System.out.println("Something went wrong when trying to log in!");
              }
          }
  
  
      } else {
          System.out.println("Invalid Login type! Only \"dvwa\" and \"bodgeit\" logins are supported!");
      }
  
  }
  </code></pre>
  
  <p>}</p>