i want write code login websites java.
here code :
package login; import java.net.*; import java.io.*; public class connecttourl { // variables hold url object , connection url. private static url urlobj; private static urlconnection connect; public static void main(string[] args) { try { cookiemanager cmanager = new cookiemanager(); cookiehandler.setdefault(cmanager); // establish url , open connection it. set output mode. urlobj = new url("https://accounts.google.com/servicelogin?service=mail&continue=https://mail.google.com/mail/#identifier"); connect = urlobj.openconnection(); connect.setdooutput(true); } catch (malformedurlexception ex) { system.out.println("the url specified unable parsed or uses invalid protocol. please try again."); system.exit(1); } catch (exception ex) { system.out.println("an exception occurred. " + ex.getmessage()); system.exit(1); } try { // create buffered writer urlconnection's output stream , write our forms parameters. bufferedwriter writer = new bufferedwriter(new outputstreamwriter(connect.getoutputstream())); writer.write("email=myemail@gmail.com&passwd=123456&submit=login"); writer.close(); // establish buffered reader read urlconnection's input stream. bufferedreader reader = new bufferedreader(new inputstreamreader(connect.getinputstream())); string lineread = ""; // read available lines of data url , print them screen. while ((lineread = reader.readline()) != null) { system.out.println(lineread); } reader.close(); } catch (exception ex) { system.out.println("there error reading or writing url: " + ex.getmessage()); } } } i have tried code on facebook , gmail problem didn't work.
it keep telling me cookies not enabled. (i have used chrome browser , enabled).
is there other ways achieve this?
if goal login web site. better solution use selenium web driver.
it has api creating modern drivers instances. , operate web elements.
code example:
import org.openqa.selenium.by; import org.openqa.selenium.webdriver; import org.openqa.selenium.webelement; import org.openqa.selenium.htmlunit.htmlunitdriver;
public class example { public static void main(string[] args) { // create new instance of html unit driver // notice remainder of code relies on interface, // not implementation. webdriver driver = new htmlunitdriver(); // , use visit google driver.get("http://www.google.com"); // find text input element name webelement element = driver.findelement(by.name("q")); // enter search element.sendkeys("cheese!"); // submit form. webdriver find form element element.submit(); // check title of page system.out.println("page title is: " + driver.gettitle()); driver.quit(); } } also has solution how manage cookies - cookies
just @ documentation how configure driver instances , manage web elements. preferred way use page object pattern.
update:
for getting location web page doesn't have id or name attributes can done using xpath expressions. useful can firefox extensions like:
and use concisely , short xpath functions.
for example:
<table> <tr> <td> <p>some text here 1</p> </td> </tr> <tr> <td> <p>some text here 2</p> </td> </tr> <tr> <td> <p>some text here 3</p> </td> </tr> </table> for getting text some text here 2 able use following xpath:
//tr[2]/td/p
if know text static able use contains():
//p[contains(text(), 'some text here 2')]
for checking if xpath unique @ page best use console.
how described here how verify xpath expression
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