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		<id>http://jexp.ru/index.php?action=history&amp;feed=atom&amp;title=Java%2FServlets%2FLogin</id>
		<title>Java/Servlets/Login - История изменений</title>
		<link rel="self" type="application/atom+xml" href="http://jexp.ru/index.php?action=history&amp;feed=atom&amp;title=Java%2FServlets%2FLogin"/>
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		<updated>2026-06-19T18:20:49Z</updated>
		<subtitle>История изменений этой страницы в вики</subtitle>
		<generator>MediaWiki 1.30.0</generator>

	<entry>
		<id>http://jexp.ru/index.php?title=Java/Servlets/Login&amp;diff=6309&amp;oldid=prev</id>
		<title>Admin: 1 версия</title>
		<link rel="alternate" type="text/html" href="http://jexp.ru/index.php?title=Java/Servlets/Login&amp;diff=6309&amp;oldid=prev"/>
				<updated>2010-06-01T06:11:28Z</updated>
		
		<summary type="html">&lt;p&gt;1 версия&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;ru&quot;&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Предыдущая&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Версия 06:11, 1 июня 2010&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; style=&quot;text-align: center;&quot; lang=&quot;ru&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(нет различий)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Admin</name></author>	</entry>

	<entry>
		<id>http://jexp.ru/index.php?title=Java/Servlets/Login&amp;diff=6308&amp;oldid=prev</id>
		<title> в 18:01, 31 мая 2010</title>
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				<updated>2010-05-31T18:01:43Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Новая страница&lt;/b&gt;&lt;/p&gt;&lt;div&gt;== Servlet for login ==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;java&amp;quot;&amp;gt;&lt;br /&gt;
import java.io.IOException;&lt;br /&gt;
import java.io.PrintWriter;&lt;br /&gt;
import javax.servlet.ServletException;&lt;br /&gt;
import javax.servlet.http.HttpServlet;&lt;br /&gt;
import javax.servlet.http.HttpServletRequest;&lt;br /&gt;
import javax.servlet.http.HttpServletResponse;&lt;br /&gt;
import javax.servlet.http.HttpSession;&lt;br /&gt;
public class LoginHandler extends HttpServlet {&lt;br /&gt;
  public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException,&lt;br /&gt;
      IOException {&lt;br /&gt;
    res.setContentType(&amp;quot;text/html&amp;quot;);&lt;br /&gt;
    PrintWriter out = res.getWriter();&lt;br /&gt;
    String account = req.getParameter(&amp;quot;account&amp;quot;);&lt;br /&gt;
    String password = req.getParameter(&amp;quot;password&amp;quot;);&lt;br /&gt;
    String pin = req.getParameter(&amp;quot;pin&amp;quot;);&lt;br /&gt;
    if (!allowUser(account, password, pin)) {&lt;br /&gt;
      out.println(&amp;quot;&amp;lt;HTML&amp;gt;&amp;lt;HEAD&amp;gt;&amp;lt;TITLE&amp;gt;Access Denied&amp;lt;/TITLE&amp;gt;&amp;lt;/HEAD&amp;gt;&amp;quot;);&lt;br /&gt;
      out.println(&amp;quot;&amp;lt;BODY&amp;gt;Your login and password are invalid.&amp;lt;BR&amp;gt;&amp;quot;);&lt;br /&gt;
      out.println(&amp;quot;You may want to &amp;quot;);&lt;br /&gt;
      out.println(&amp;quot;&amp;lt;/BODY&amp;gt;&amp;lt;/HTML&amp;gt;&amp;quot;);&lt;br /&gt;
    } else {&lt;br /&gt;
      // Valid login. Make a note in the session object.&lt;br /&gt;
      HttpSession session = req.getSession();&lt;br /&gt;
      session.setAttribute(&amp;quot;logon.isDone&amp;quot;, account);&lt;br /&gt;
      // Try redirecting the client to the page he first tried to access&lt;br /&gt;
      try {&lt;br /&gt;
        String target = (String) session.getAttribute(&amp;quot;login.target&amp;quot;);&lt;br /&gt;
        if (target != null) {&lt;br /&gt;
          res.sendRedirect(target);&lt;br /&gt;
          return;&lt;br /&gt;
        }&lt;br /&gt;
      } catch (Exception ignored) {&lt;br /&gt;
      }&lt;br /&gt;
      // Couldn&amp;quot;t redirect to the target. Redirect to the site&amp;quot;s home page.&lt;br /&gt;
      res.sendRedirect(&amp;quot;/&amp;quot;);&lt;br /&gt;
    }&lt;br /&gt;
  }&lt;br /&gt;
  protected boolean allowUser(String account, String password, String pin) {&lt;br /&gt;
    return true; // trust everyone&lt;br /&gt;
  }&lt;br /&gt;
}&lt;br /&gt;
           &lt;br /&gt;
       &amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- end source code --&amp;gt;&lt;/div&gt;</summary>
			</entry>

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